Periodontology JOURNAL OF CONTENTS. Parameters of Care. Foreword...i. Overview...ii. Parameter on Comprehensive Periodontal Examination...

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1 Volume 71 Number 5 May 2000 (Supplement) JOURNAL OF Periodontology CONTENTS Parameters of Care Foreword...i Overview...ii Parameter on Comprehensive Periodontal Examination Parameter on Periodontal Maintenance Parameter on Plaque-Induced Gingivitis Parameter on Chronic Periodontitis With Slight to Moderate Loss of Periodontal Support Parameter on Chronic Periodontitis With Advanced Loss of Periodontal Support Parameter on Refractory Periodontitis Parameter on Mucogingival Conditions Parameter on Acute Periodontal Diseases Parameter on Aggressive Periodontitis Parameter on Placement and Management of the Dental Implant Parameter on Occlusal Traumatism in Patients With Chronic Periodontitis Parameter on Periodontitis Associated With Systemic Conditions Parameter on Systemic Conditions Affected by Periodontal Diseases...880

2 Foreword The Parameters of Care were developed by the Ad Hoc Committee on the Parameters of Care and have been approved by the Board of Trustees of the American Academy of Periodontology. This publication has been edited to reflect decisions by the Board of Trustees in approving the term periodontal maintenance in lieu of supportive periodontal therapy (January 2000) and a new classification of periodontal diseases, as published in the Annals of Periodontology, December 1999; Volume 4, number 1 (April 2000). Individual copies of this supplement may be purchased by contacting the Product Services Department, American Academy of Periodontology, 737 North Michigan Avenue, Suite 800, Chicago, Illinois ; voice: 312/ ; fax: 312/ ; orders@perio.org. This material is also accessible through the Academy s Web site, under the Resources and Products Section. Members involved in the development of these Parameters are: Donald A. Adams; Erwin P. Barrington (Chair); Jack Caton, Jr.; Robert J. Genco; Stephen F. Goodman; Carole N. Hildebrand; Marjorie K. Jeffcoat; Fraya Karsh; Sanford B. King; Brain L. Mealey; Roland M. Meffert; James T. Mellonig; Myron Nevins; Steven Offenbacher; Gary M. Reiser; Louis F. Rose; Paul R. Rosen; Cheryl L. Townsend (Chair); and S. Jerome Zackin. i

3 Overview In response to increasing concerns on the part of health care providers, third-party payers, and consumers about the quality, cost, and access to dental care, the American Academy of Periodontology has developed practice parameters on the diagnosis and treatment of periodontal diseases. These parameters are strategies to assist dentists in making clinical decisions from a range of reasonable treatment options to achieve a desired outcome. Practice parameters are designed to help the profession provide appropriate dental services while containing costs, without sacrificing quality. These parameters are constantly updated and are partially based on methodology utilized by participants in the American Academy of Periodontology 1996 World Workshop in Periodontics (Annals of Periodontology, Volume 1, 1996) to assess the evidentiary status of periodontal and implant treatment. The major goal is to improve treatment decisions by increasing the strength of the inference that practitioners can derive from the base of knowledge contained within the literature. There are several types of periodontal diseases, with many treatment options. The Academy has developed a series of parameters to address a full range of clinical conditions. Although the parameters vary in their specificity and research base, they incorporate the best available knowledge on the diagnosis, prevention, and treatment of periodontal diseases. Each parameter should be considered in its entirety. It should be recognized that adherence to any parameter will not obviate all complications or post-care problems in periodontal therapy. A parameter should not be deemed inclusive of all methods of care or exclusive of treatment appropriately directed to obtain the same results. It should also be noted that these parameters summarize patient evaluation and treatment procedures which have been presented in more detail in the medical and dental literature. It is important to emphasize that the final judgment regarding the care for any given patient must be determined by the dentist. The fact that dental treatment varies from a practice parameter does not of itself establish that a dentist has not met the required standard of care. Ultimately, it is the dentist who must determine the appropriate course of treatment to provide a reasonable outcome for the patient. It is the dentist, together with the patient, who has the final responsibility for making decisions about therapeutic options. ii

4 Parameters of Care Supplement Parameter on Comprehensive Periodontal Examination* The American Academy of Periodontology has developed the following parameter on comprehensive periodontal examination for periodontal diseases. Appropriate screening procedures may be performed to determine the need for a comprehensive periodontal evaluation. Periodontal Screening and Recording (PSR), a screening procedure endorsed by the American Dental Association and the American Academy of Periodontology, may be utilized. J Periodontol 2000;71: KEY WORDS Periodontal diseases/diagnosis; dental history; medical history; patient care planning. PATIENT EVALUATION/EXAMINATION Evaluation of the patient s periodontal status requires obtaining a relevant medical and dental history and conducting a thorough clinical and radiographic examination with evaluation of extraoral and intraoral structures. All relevant findings should be documented. When an examination is performed for limited purposes, such as for a specifically focused problem or an emergency, records appropriate for the condition should be made and retained. 1. A medical history should be taken and evaluated to identify predisposing conditions that may affect treatment, patient management, and outcomes. Such conditions include, but are not limited to, diabetes, hypertension, pregnancy, smoking, substance abuse and medications, or other existing conditions that impact traditional dental therapy. When there is a condition that in the judgment of the dentist requires further evaluation, consultation with an appropriate health care provider should be obtained. 2. A dental history, including the chief complaint or reason for the visit, should be taken and evaluated. Information about past dental and periodontal care and records, including radiographs of previous treatment, may be useful. 3. Extraoral structures should be examined and evaluated. The temporomandibular apparatus and associated structures may also be evaluated. 4. Intraoral tissues and structures, including the oral mucosa, muscles of mastication, lips, floor of mouth, tongue, salivary glands, palate, and the oropharynx, should be examined and evaluated. 5. The teeth and their replacements should be examined and evaluated. The examination should include observation of missing teeth, condition of * Approved by the Board of Trustees, American Academy of Periodontology, May restorations, caries, tooth mobility, tooth position, occlusal and interdental relationships, signs of parafunctional habits, and, when applicable, pulpal status. 6. Radiographs that are current, based on the diagnostic needs of the patient, should be utilized for proper evaluation and interpretation of the status of the periodontium and dental implants. Radiographs of diagnostic quality are necessary for these purposes. Radiographic abnormalities should be noted. 7. The presence and distribution of plaque and calculus should be determined. 8. Periodontal soft tissues, including peri-implant tissues, should be examined. The presence and types of exudates should be determined. 9. Probing depths, location of the gingival margin (clinical attachment levels), and the presence of bleeding on probing should be evaluated. 10. Mucogingival relationships should be evaluated to identify deficiencies of keratinized tissue, abnormal frenulum insertions, and other tissue abnormalities such as clinically significant gingival recession. 11. The presence, location, and extent of furcation invasions should be determined. 12. In addition to conventional methods of evaluation; i.e., visual inspection, probing, and radiographic examinations, the patient s periodontal condition may warrant the use of additional diagnostic aids. These include, but are not limited to, diagnostic casts, microbial and other biologic assessments, radiographic imaging, or other appropriate medical laboratory tests. 13. All relevant clinical findings should be documented in the patient s record. 14. Referral to other health care providers should be made and documented when warranted. 15. Based on the results of the examination, a diagnosis and proposed treatment plan should be J Periodontol May 2000 (Supplement) 847

5 Supplement presented to the patient. Patients should be informed of the disease process, therapeutic alternatives, potential complications, the expected results and their responsibilities in treatment. Consequences of no treatment should be explained to the patient. SELECTED RESOURCES 1. Bottomley WK. Patient health status evaluation procedures for the dental profession. Part 1. Dental/medical history. J Oral Med Spec No: Lush DT. History. In: Rose LF, Kay D, eds. Internal Medicine for Dentistry, 2nd ed. St Louis: The CV Mosby Company; Romriell GE, Streeper SN. The medical history. Dent Clin North Am 1982;26: Terezhalmy GT, Schiff T. The historical profile. Dent Clin North Am 1986;30: Burch JG. History and clinical examination. In: The President s Conference on the Examination, Diagnosis, and Management of Temporomandibular Disorders. Chicago: American Dental Association; 1983: Boozer C. Clinical examination. In: Clark s Clinical Dentistry, Vol. 1. Philadelphia: JB Lippincott Company; Lynch M. In: Burkett s Oral Medicine, 7th ed. Philadelphia: JB Lippincott Company; Clark JW. Clinical Dentistry, Vol. 1. Philadelphia: Harper & Row; 1981: Fox C. Occlusal examination. In: The President s Conference on the Examination, Diagnosis, and Management of Temporomandibular Disorders. Chicago: American Dental Association; 1983: Kerr DA, Ash MM, Millard HD. Oral Diagnosis. St. Louis: The CV Mosby Company; 1983: Mertz CA. Dental Identification. Dent Clin North Am 1977;21: Goaz PW, White SC. Oral Radiology: Principles and Interpretation, 2d ed. St. Louis: The CV Mosby Company; Joseph LP. The Selection of Patients for X-Ray Examination: Dental Radiographic Examinations. Rockville, MD: Center for Devices and Radiological Health, Food and Drug Administration, 1988; DHHS publication no Miles DA, Lovas JGL, Loyens S. Radiographs and the responsible dentist. Gen Dent 1989;37: Greene JC. Oral hygiene and periodontal disease. Am J Public Health 1963;53: Listgarten MA, Helldén L. Relative distribution of bacteria at clinically healthy and periodontally diseased sites in humans. J Clin Periodontol 1978;5: Löe H, Theilade E, Borglum-Jensen SB. Experimental gingivitis in man. J Periodontol 1965;36: Mandel I, Gaffar A. Calculus revisited: A review. J Clin Periodontol 1986;13: Barrington E, Nevins M. Diagnosing periodontal diseases. J Am Dent Assoc 1990;121: Carranza F. Glickman s Clinical Periodontology, 7th ed. Philadelphia: WB Saunders Company: 1990: Genco R, Goldman H, Cohen D. Contemporary Periodontics. St. Louis: The CV Mosby Company; 1990: Polson A, Caton J. Current status of bleeding in the diagnosis of periodontal diseases. J Periodontol 1985; (Spec. Issue)56: The American Academy of Periodontology. Current Procedural Terminology for Periodontics and Insurance Reporting Manual, 7th ed. Chicago: The American Academy of Periodontology; The American Academy of Periodontology. Proceedings of the World Workshop in Clinical Periodontics. Chicago: The American Academy of Periodontology, 1989; Armitage GC. Periodontal diseases: Diagnosis. Ann Periodontol 1996;1: Consenus Report: Periodontal diseases: Epidemiology and diagnosis. Ann Periodontol 1996;1: Wilson T, Kornman K, Newman M. Advances in Periodontology. Chicago: Quintessence Publishing; Marks M, Corn H. Atlas of Adult Orthodontics. Philadelphia: Lea & Febiger; Parameter on Comprehensive Periodontal Examination Volume 71 Number 5 (Supplement)

6 Parameter on Periodontal Maintenance* Parameters of Care Supplement The American Academy of Periodontology has developed the following parameter on Periodontal Maintenance. Periodontal maintenance is an integral part of periodontal therapy for patients with a history of inflammatory periodontal diseases. Patients should be informed of the disease process, therapeutic alternatives, potential complications, expected results, and their responsibility in treatment. Consequences of no treatment should be explained. Failure to comply with a periodontal maintenance program may result in recurrence or progression of the disease process. Given this information, patients should then be able to make informed decisions regarding their periodontal therapy. J Periodontol 2000;71: KEY WORDS Health education, dental; periodontal diseases/prevention and control; periodontal diseases/therapy; disease progression. Periodontal maintenance is started after completion of active periodontal therapy and continues at varying intervals for the life of the dentition or its implant replacements. Periodontal maintenance is an extension of active periodontal therapy. Periodontal maintenance procedures are supervised by the dentist and include an update of the medical and dental histories, radiographic review, extraoral and intraoral soft tissue examination, dental examination, periodontal examination, review of the patient s plaque control effectiveness, removal of microbial flora from sulcular or pocket areas, scaling and root planing where indicated, and polishing the teeth. These procedures are performed at selected intervals to assist the periodontal patient in maintaining oral health. This is the phase of periodontal therapy during which periodontal diseases and conditions are monitored and etiologic factors are reduced or eliminated. It is distinct from, but integrated with, active therapy. The patient may move from active therapy to periodontal maintenance and back into active care if the disease recurs. THERAPEUTIC GOALS 1. To minimize the recurrence and progression of periodontal disease in patients who have been previously treated for gingivitis and periodontitis. 2. To reduce the incidence of tooth loss by monitoring the dentition and any prosthetic replacements of the natural teeth. 3. To increase the probability of locating and treating, in a timely manner, other diseases or conditions found within the oral cavity. * Approved by the Board of Trustees, American Academy of Periodontology, May TREATMENT CONSIDERATIONS The following items may be included in an periodontal maintenance visit, subject to previous examination, history, and the judgment of the clinician. Review and Update of Medical and Dental History Clinical Examination (to be compared with previous baseline measurements) 1. Extraoral examination and recording of results 2. Dental examination and recording of results: A. Tooth mobility/fremitus; B. Caries assessment; C. Restorative, prosthetic; D. Other tooth-related problems. 3. Periodontal examination and recording of results: A. Probing depths; B. Bleeding on probing; C. General levels of plaque and calculus; D. Evaluation of furcation invasion; E. Exudation; F. Gingival recession; G. Occlusal examination and tooth mobility; H. Other signs and symptoms of disease activity. 4. Examination of dental implants and peri-implant tissues and recording of results: A. Probing depths; B. Bleeding on probing; C. Examination of prosthesis/abutment components; D. Evaluation of implant stability; E. Occlusal examination; F. Other signs and symptoms of disease activity. J Periodontol May 2000 (Supplement) 849

7 Supplement Radiographic Examination Radiographs should be current and should be based on the diagnostic needs of the patient and should permit proper evaluation and interpretation of the status of the periodontium and dental implants. Radiographs of diagnostic quality are necessary for these purposes. The judgement of the clinician, as well as the degree of disease activity, may help determine the need for, the frequency of, and the number of radiographs. Radiographic abnormalities should be noted. Assessment 1. Assessment of disease status by reviewing the clinical and radiographic examination findings compared with baseline. 2. Assessment of personal oral hygiene status. Treatment 1. Removal of subgingival and supragingival plaque and calculus 2. Behavior modification: A. Oral hygiene reinstruction B. Compliance with suggested periodontal maintenance intervals C. Counseling on control of risk factors; e.g., cessation of smoking 3. Antimicrobial agents as necessary 4. Surgical treatment of recurrent disease Communication 1. Informing the patient of current status and alterations in treatment if indicated. 2. Consultation with other health care practitioners who will be providing additional therapy or participating in the periodontal maintenance program. Planning 1. For most patients with a history of periodontitis, visits at 3-month intervals have been found to be effective in maintaining the established gingival health. 2. Based on evaluation of clinical findings and assessment of disease status, periodontal maintenance frequency may be modified or the patient may be returned to active treatment. OUTCOMES ASSESSMENT 1. The desired outcome for patients on periodontal maintenance should result in maintenance of the periodontal health status attained as a result of active therapy. 2. Inadequate periodontal maintenance or noncompliance may result in recurrence or progression of the disease process. 3. Despite adequate periodontal maintenance and patient compliance, patients may demonstrate recurrence or progression of periodontal disease. In these patients additional therapy may be warranted. SELECTED RESOURCES 1. Becker W, Becker BE, Berg LE. Periodontal treatment without maintenance. A retrospective study in 44 patients. J Periodontol 1984;55: Nyman S, Rosling B, Lindhe J. Effect of professional tooth cleaning on healing after periodontal surgery. J Clin Periodontol 1975;2: Hirschfeld L, Wasserman B. A long-term survey of tooth loss in 600 treated periodontal patients. J Periodontol 1978;49: Axelsson P, Lindhe J. The significance of maintenance care in the treatment of periodontal disease. J Clin Periodontol 1981;8: McFall WT Jr. Tooth loss in 100 treated patients with periodontal disease. A long-term study. J Periodontol 1982;53: Westfeld E, Nyman S, Socransky S, Lindhe J. Significance of frequency of professional tooth cleaning for healing following periodontal surgery. J Clin Periodontol 1983;10: Becker W, Berg L, Becker BE. The long-term evaluation of periodontal maintenance in 95 patients. Int J Periodontics Restorative Dent 1984;4(2): Lindhe J, Nyman S. Long-term maintenance of patients treated for advanced periodontal disease. J Clin Periodontol 1984;11: DeVore CH, Duckworth DM, Beck FM, Hicks MJ, Brumfield FW, Horton JE. Bone loss following periodontal therapy in subjects without frequent periodontal maintenance. J Periodontol 1986;57: Kerr NW. Treatment of chronic periodontitis. 45% failure rate after 5 years. Br Dent J 1981;150: Wilson TG, Glover ME, Malik AK, Schoen JA, Dorsett D. Tooth loss in maintenance patients in a private periodontal practice. J Periodontol 1987;58: Wilson TG: Compliance. A review of the literature with possible applications to periodontics. J Periodontol 1987;58: Mendoza AR, Newcomb GM, Nixon KC. Compliance with supportive periodontal therapy. J Periodontol 1991; 62: Schallhorn RG, Snider LE. Periodontal maintenance therapy. J Am Dent Assoc 1981;103: The American Academy of Periodontology. In: Proceedings of the World Workshop in Clinical Periodontics. Chicago: The American Academy of Periodontology. 1989;IX Hancock, EB. Prevention. Ann Periodontol 1996;1: Consensus report on prevention. Ann Periodontol 1996; 1: The American Academy of Periodontology. Supportive Periodontal Therapy (Position Paper). J Periodontol 1998;69; Wilson TG, Kornman KS, Newman MG. Advances In Periodontics. Chicago: Quintessence Publishing Parameter on Periodontal Maintenance Volume 71 Number 5 (Supplement)

8 Parameter on Plaque-Induced Gingivitis* Parameters of Care Supplement The American Academy of Periodontology has developed the following parameter on plaque-induced gingivitis in the absence of clinical attachment loss. Plaque-induced gingivitis is the most common form of the periodontal diseases, affecting a significant portion of the population in susceptible individuals. Patients should be informed of the disease process, therapeutic alternatives, potential complications, expected results, and their responsibility in treatment. Consequences of no treatment should be explained. No treatment may result in continuation of clinical signs of disease, with possible development of gingival defects and progression to periodontitis. Given this information, patients should then be able to make informed decisions regarding their periodontal therapy. J Periodontol 2000;71: KEY WORDS Dental plaque/adverse effects; gingivitis/pathogenesis; disease progression; periodontal attachment loss/ prevention and control. CLINICAL DIAGNOSIS Definition Plaque-induced gingivitis is defined as inflammation of the gingiva in the absence of clinical attachment loss. Clinical Features Gingivitis may be characterized by the presence of any of the following clinical signs: redness and edema of the gingival tissue, bleeding upon provocation, changes in contour and consistency, presence of calculus and/or plaque, and no radiographic evidence of crestal bone loss. THERAPEUTIC GOALS The therapeutic goal is to establish gingival health through the elimination of the etiologic factors; e.g., plaque, calculus, and other plaque-retentive factors. TREATMENT CONSIDERATIONS Contributing systemic risk factors may affect treatment and therapeutic outcomes for plaque-induced gingivitis. These may include diabetes, smoking, and certain periodontal bacteria, aging, gender, genetic predisposition, systemic diseases and conditions (immunosuppression), stress, nutrition, pregnancy, substance abuse, HIV infection, and medications. A treatment plan for active therapy should be developed that may include the following: * Approved by the Board of Trustees, American Academy of Periodontology, May Patient education and customized oral hygiene instruction. 2. Debridement of tooth surfaces to remove supraand subgingival plaque and calculus. 3. Antimicrobial and antiplaque agents or devices may be used to augment the oral hygiene efforts of patients who are partially effective with traditional mechanical methods. 4. Correction of plaque-retentive factors such as over-contoured crowns, open and/or overhanging margins, narrow embrasure spaces, open contacts, ill-fitting fixed or removable partial dentures, caries, and tooth malposition. 5. In selected cases, surgical correction of gingival deformities that hinder the patient s ability to perform adequate plaque control may be indicated. 6. Following the completion of active therapy, the patient s condition should be evaluated to determine the course of future treatment. OUTCOMES ASSESSMENT 1. Satisfactory response to therapy should result in significant reduction of clinical signs of gingival inflammation, stability of clinical attachment levels, and reduction of clinically-detectible plaque to a level compatible with gingival health. An appropriate initial interval for follow up care and prophylaxis should be determined by the clinician. 2. If the therapy performed does not resolve the periodontal condition, there may be: continuation of clinical signs of disease (bleeding on probing, redness, swelling, etc.) with possible development of gingival defects such as gingival clefts, gingival craters, etc., J Periodontol May 2000 (Supplement) 851

9 Supplement and possible progression to periodontitis with associated attachment loss. 3. Factors which may contribute to the periodontal condition not resolving include lack of effectiveness and/or patient non-compliance in controlling plaque, underlying systemic disease, presence of supra- and/or subgingival calculus, restorations which do not permit sufficient control of local factors, patient noncompliance with prophylaxis intervals, and mental and/or physical disability. 4. In the management of patients where the periodontal condition does not respond, treatment may include additional sessions of oral hygiene instruction and education, additional or alternative methods and devices for plaque removal, medical/dental consultation, additional tooth debridement, increasing the frequency of prophylaxis, microbial assessment, and continuous monitoring and evaluation to determine further treatment needs. SELECTED RESOURCES 1. Barrington E, Nevins M. Diagnosing periodontal diseases. J Am Dent Assoc 1990;121: Polson A, Caton J. Current status of bleeding in the diagnosis of periodontal diseases. J Periodontol 1985; (Spec. Issue)56: Wilson T, Kornman K, Newman M. Advances in Periodontology. Chicago: Quintessence; Greenwell H, Stovsky D, Bissada N. Periodontics in general practice: Perspectives on nonsurgical therapy. J Am Dent Assoc 1987;115: The American Academy of Periodontology. Guidelines for Periodontal Therapy (Position Paper). J Periodontol 1998;69: The American Academy of Periodontology. Proceedings of the World Workshop in Clinical Periodontics. Chicago: The American Academy of Periodontology; Armitage GC. Periodontal diseases: Diagnosis. Ann Periodontol 1996;1: Consensus Report: Periodontal diseases: Epidemiology and diagnosis. Ann Periodontol 1996;1: Hancock EB. Prevention. Ann Periodontol 1996;1: Consensus report: Prevention. Ann Periodontol 1996; 1: Hall, WB. Decision-Making in Periodontology, 2d ed. St Louis: The CV Mosby Company; Becker W, Berg L, Becker B. Untreated periodontal disease: a longitudinal study. J Periodontol 1979;50: Marks M, Corn H. Atlas of Adult Orthodontics. Philadelphia: Lea & Febiger; Listgarten MA, Hellden L. Relative distribution of bacteria at clinically healthy and periodontally diseased sites in human. J Clin Periodontol 1978;5: Löe H, Theilade E, Jensen SB. Experimental gingivitis in man. J Periodontol 1965;36: Parameter on Plaque-Induced Gingivitis Volume 71 Number 5 (Supplement)

10 Parameters of Care Supplement Parameter on Chronic Periodontitis With Slight to Moderate Loss of Periodontal Support* The American Academy of Periodontology has developed the following parameter on the treatment of chronic periodontitis with slight to moderate loss of periodontal supporting tissues. Patients should be informed of the disease process, therapeutic alternatives, potential complications, expected results, and their responsibility in treatment. Consequences of no treatment should be explained. Failure to appropriately treat chronic periodontitis can result in progressive loss of periodontal supporting tissues, an adverse change in prognosis, and could result in tooth loss. Given this information, patients should then be able to make informed decisions regarding their periodontal therapy. J Periodontol 2000;71: KEY WORDS Disease progression; periodontitis/diagnosis; periodontitis/complications; periodontal attachment loss/prevention and control; tooth loss/prevention and control; patient care planning. CLINICAL DIAGNOSIS Definition Chronic periodontitis is defined as inflammation of the gingiva extending into the adjacent attachment apparatus. The disease is characterized by loss of clinical attachment due to destruction of the periodontal ligament and loss of the adjacent supporting bone. Clinical Features Although chronic periodontitis is the most common form of destructive periodontal disease in adults, it can occur over a wide range of ages. It can occur in both the primary and secondary dentition. It usually has slow to moderate rates of progression, but may have periods of rapid progression. Clinical features may include combinations of the following signs and symptoms: edema, erythema, gingival bleeding upon probing, and/or suppuration. Chronic periodontitis with slight to moderate destruction is characterized by a loss of up to one-third of the supporting periodontal tissues. In molars, if the furcation is involved, loss of clinical attachment should not exceed Class I (incipient). Slight to moderate destruction is generally characterized by periodontal probing depths up to 6 mm with clinical attachment loss of up to 4 mm. Radiographic evidence of bone loss and increased tooth mobility may be present. Chronic periodontitis with slight to mod- * Approved by the Board of Trustees, American Academy of Periodontology, May erate loss of periodontal supporting tissues may be localized, involving one area of a tooth s attachment, or more generalized, involving several teeth or the entire dentition. A patient may simultaneously have areas of health and chronic periodontitis with slight, moderate, and advanced destruction. THERAPEUTIC GOALS The goals of periodontal therapy are to alter or eliminate the microbial etiology and contributing risk factors for periodontitis, thereby arresting the progression of the disease and preserving the dentition in a state of health, comfort, and function with appropriate esthetics; and to prevent the recurrence of periodontitis. In addition, regeneration of the periodontal attachment apparatus, where indicated, may be attempted. TREATMENT CONSIDERATIONS Clinical judgment is an integral part of the decisionmaking process. Many factors affect the decisions for the appropriate therapy(ies) and the expected therapeutic results. Patient-related factors include systemic health, age, compliance, therapeutic preferences, and patient s ability to control plaque. Other factors include the clinician s ability to remove subgingival deposits, restorative and prosthetic demands, and the presence and treatment of teeth with more advanced chronic periodontitis. Treatment considerations for patients with slight to moderate loss of periodontal support are described below. J Periodontol May 2000 (Supplement) 853

11 Supplement Initial Therapy 1. Contributing systemic risk factors may affect treatment and therapeutic outcomes for chronic periodontitis. These may include diabetes, smoking, certain periodontal bacteria, aging, gender, genetic predisposition, systemic diseases and conditions (immunosuppression), stress, nutrition, pregnancy, HIV infection, substance abuse, and medications. Elimination, alteration, or control of risk factors which may contribute to chronic periodontitis should be attempted. Consultation with the patient s physician may be indicated. 2. Instruction, reinforcement, and evaluation of the patient s plaque control should be performed. 3. Supra- and subgingival scaling and root planing should be performed to remove microbial plaque and calculus. 4. Antimicrobial agents or devices may be used as adjuncts. 5. Local factors contributing to chronic periodontitis should be eliminated, or controlled. To accomplish this, the following procedures may be considered: A. Removal or reshaping of restorative overhangs and over-contoured crowns; B. Correction of ill-fitting prosthetic appliances; C. Restoration of carious lesions; D. Odontoplasty; E. Tooth movement; F. Restoration of open contacts which have resulted in food impaction; G. Treatment of occlusal trauma. 6. Evaluation of the initial therapy s outcomes should be performed after an appropriate interval for resolution of inflammation and tissue repair. A periodontal examination and re-evaluation may be performed with the relevant clinical findings documented in the patient s record. These findings may be compared to initial documentation to assist in determining the outcome of initial therapy as well as the need for and the type of further treatment. 7. For reasons of health, lack of effectiveness or non-compliance with plaque control, patient desires, or therapist s decision, appropriate treatment to control the disease may be deferred or declined. 8. If the results of initial therapy resolve the periodontal condition, periodontal maintenance should be scheduled at appropriate intervals (see Parameter on Periodontal Maintenance, pages ). 9. If the results of initial therapy do not resolve the periodontal condition, periodontal surgery should be considered to resolve the disease process and/or correct anatomic defects. Periodontal Surgery A variety of surgical treatment modalities may be appropriate in managing the patient. 1. Gingival augmentation therapy. 2. Regenerative therapy: A. Bone replacement grafts; B. Guided tissue regeneration; C. Combined regenerative techniques. 3. Resective therapy: A. Flaps with or without osseous surgery; B. Gingivectomy. Other Treatments 1. Refinement therapy to achieve therapeutic objectives. 2. Treatment of residual risk factors should be considered; e.g., cessation of smoking, control of diabetes. 3. An appropriate initial interval for periodontal maintenance should be determined by the clinician (Periodontal Maintenance Parameter, pages ). OUTCOMES ASSESSMENT 1. The desired outcome of periodontal therapy in patients with chronic periodontitis with slight to moderate loss of periodontal support should result in: A. Significant reduction of clinical signs of gingival inflammation; B. Reduction of probing depths; C. Stabilization or gain of clinical attachment; D. Reduction of clinically detectable plaque to a level compatible with gingival health. 2. Areas where the periodontal condition does not resolve may occur and be characterized by: A. Inflammation of the gingival tissues; B. Persistent or increasing probing depths; C. Lack of stability of clinical attachment; D. Persistent clinically detectable plaque levels not compatible with gingival health. 3. In patients where the periodontal condition does not resolve, additional therapy may be required. A. Not all patients or sites will respond equally or acceptably; B. Additional therapy may be warranted on a site specific basis. SELECTED RESOURCES 1. Cobb CM. Non-surgical pocket therapy: Mechanical. Ann Periodontol 1996;1: Drisko CH. Non-surgical pocket therapy: Pharmacotherapeutics. Ann Periodontol 1996;1: Gher ME. Non\-surgical pocket therapy: Dental occlusion. Ann Periodontol 1996;1: Consensus report on non-surgical pocket therapy: Mechanical, pharmacotherapeutics, and dental occlu- 854 Parameter on Chronic Periodontitis With Slight to Moderate Loss of Periodontal Support Volume 71 Number 5 (Supplement)

12 Parameters of Care Supplement sion. Ann Periodontol 1996;1: Palcanis KG. Surgical pocket therapy. Ann Periodontol 1996;1: Consensus report on surgical pocket therapy. Ann Periodontol 1996;1: Polson AM, Caton JG. Current status of bleeding in the diagnosis of periodontal diseases. J Periodontol 1985; (Spec. Issue)56: The American Academy of Periodontology. Treatment of Gingivitis and Periodontitis (Position Paper). J Periodontol 1997;68: Nyman S, Lindhe J, Rosling B. Periodontal surgery in plaque-infected dentitions. J Clin Periodontol 1977;4: Lindhe J, Westfelt E, Nyman S, Socransky S, Haffajee A. Long-term effect of surgical/nonsurgical treatment of periodontal disease. J Clin Periodontol 1984;11: Greenstein G. Supragingival and subgingival irrigation: Practical application in the treatment of periodontal diseases. Compendium Contin Educ Dent 1992;13: Shiloah J, Hovious LA. The role of subgingival irrigation in the treatment of periodontitis. J Periodontol 1993;64: Momsquès T, Listgarten MA, Phillips RW. Effects of scaling and root planing on the composition of the human subgingival microbial flora. J Periodont Res 1980;15: Slots J, Mashimo P, Levine MJ, Genco RJ. Periodontal therapy in humans. I. Microbiological and clinical effects of a single course of periodontal scaling and root planing, and of adjunctive tetracycline therapy. J Periodontol 1979;50: Genco RJ, Löe H. The role of systemic conditions and disorders in periodontal disease. Periodontol ;2: Ah MKB, Johnson GK, Kaldahl WB, Patil KD, Kalkwarf KL. The effect of smoking on the response to periodontal therapy. J Clin Periodontol 1994;21: Kornman KS, Löe H. The role of local factors in the etiology of periodontal diseases. Periodontol ; 2: Burgett FG, Ramfjord SP, Nissle RR, Morrison EC, Charbeneau TD, Caffesse RG. A randomized trial of occlusal adjustment in the treatment of periodontitis patients. J Clin Periodontol 1992;19: Wang HL, Burgett FG, Shyr Y, Ramfjord S. The influence of molar furcation involvement and mobility on future clinical periodontal attachment loss. J Periodontol 1994;65: Ciancio SG, Mather ML, Zambon JLJ, Reynolds HS. Effect of a chemotherapeutic agent delivered by an oral irrigation device on plaque, gingivitis, and subgingival microflora. J Periodontol 1989;60: Walsh TF, Glenwright HD, Hull PS. Clinical effects of pulsed oral irrigation with 0.2% chlorhexidine digluconate in patients with adult periodontitis. J Clin Periodontol 1992;19: Fine JB, Harper DS, Gordon JM, Hovliaras CA, Charles CH. Short-term microbiological and clinical effects of subgingival irrigation with an antimicrobial mouth rinse. J Periodontol 1994;65: Knowles J, Burgett FG, Nissle R, Schick R, Morrison E, Ramfjord S. Results of periodontal treatment related to pocket depth and attachment levels. Eight years. J Periodontol 1979;50: Barrington EP. An overview of periodontal surgical procedures. J. Periodontol 1981;52: Marks M, Corn H. Atlas of Adult Orthodontics. Philadelphia: Lea & Febiger; Buckley LA, Crowley MJ. A longitudinal study of untreated periodontal disease. J Clin Periodontol 1984; 11: Armitage GC. Development of a classification system for periodontal diseases and conditions. Ann Periodontol 1999;4:1-6. J Periodontol May 2000 (Supplement) 855

13 Supplement Parameter on Chronic Periodontitis With Advanced Loss of Periodontal Support* The American Academy of Periodontology has developed the following parameter on the treatment of chronic periodontitis with advanced loss of periodontal supporting tissues. Patients should be informed of the disease process, therapeutic alternatives, potential complications, expected results, and their responsibility in treatment. Consequences of no treatment should be explained. Failure to appropriately treat chronic periodontitis can result in progressive loss of periodontal supporting tissues, an adverse change in prognosis, and could result in tooth loss. Given this information, patients should then be able to make informed decisions regarding their periodontal therapy. J Periodontol 2000;71: KEY WORDS Disease progression; periodontitis/diagnosis; periodontitis/complications; periodontal attachment loss/prevention and control; tooth loss/prevention and control; patient care planning. CLINICAL DIAGNOSIS Definition Chronic periodontitis is defined as inflammation of the gingiva and the adjacent attachment apparatus. The disease is characterized by loss of clinical attachment due to destruction of the periodontal ligament and loss of the adjacent supporting bone. Clinical Features Clinical features may include combinations of the following signs and symptoms: edema, erythema, gingival bleeding upon probing, and/or suppuration. Chronic periodontitis with advanced loss of periodontal support is characterized by a loss of greater than onethird of the supporting periodontal tissues. Loss of clinical attachment, in the furcation, if present, will exceed Class I (incipient). Advanced destruction is generally characterized by periodontal probing depths greater than 6 mm with attachment loss greater than 4 mm. Radiographic evidence of bone loss is apparent. Increased tooth mobility may be present. Chronic periodontitis with advanced loss of periodontal supporting tissues may be localized, involving one area of a tooth s attachment, or more generalized, involving several teeth or the entire dentition. A patient may simultaneously have areas of health and chronic periodontitis with slight, moderate, and advanced destruction. * Approved by the Board of Trustees, American Academy of Periodontology, May THERAPEUTIC GOALS The goals of periodontal therapy are to alter or eliminate the microbial etiology and contributing risk factors for periodontitis, thereby arresting the progression of disease and preserving the dentition in a state of health, comfort, and function with appropriate esthetics; and to prevent the recurrence of periodontitis. In addition, regeneration of the periodontal attachment apparatus, where indicated, may be attempted. TREATMENT CONSIDERATIONS Clinical judgment is an integral part of the decisionmaking process. Many factors affect the decisions for appropriate therapy(ies) and the expected therapeutic results. Patient-related factors include systemic health, age, compliance, therapeutic preferences, and patient s ability to control plaque. Other factors include the clinician s ability to remove subgingival deposits, prosthetic demands, and the presence and treatment of teeth with more advanced chronic periodontitis. Treatment considerations for patients with advanced loss of periodontal support are described below. Initial Therapy 1. Contributing systemic risk factors may affect treatment and therapeutic outcomes for chronic periodontitis. These may include diabetes, smoking, cer- 856 Volume 71 Number 5 (Supplement)

14 Parameters of Care Supplement tain periodontal bacteria, aging, gender, genetic predisposition, systemic diseases and conditions (immunosuppression), stress, nutrition, pregnancy, HIV infection, substance abuse, and medications. Elimination, alteration, or control of risk factors which may contribute to adult periodontitis should be attempted. Consultation with the patient s physician may be indicated. 2. Instruction, reinforcement, and evaluation of the patient s plaque control should be performed. 3. Supra- and subgingival scaling and root planing should be performed to remove microbial plaque and calculus. 4. Antimicrobial agents or devices may be used as adjuncts. Subgingival microbial samples may be collected from selected sites for analysis, possibly including antibiotic-sensitivity testing. 5. Local factors contributing to chronic periodontitis should be eliminated or controlled. To accomplish this, the following procedures may be considered: A. Removal or reshaping of restorative overhangs and over-contoured crowns; B. Correction of ill-fitting prosthetic appliances; C. Restoration of carious lesions; D. Odontoplasty; E. Tooth movement; F. Restoration of open contacts which have resulted in food impaction; G. Treatment of occlusal trauma; H. Extraction of hopeless teeth. 6. For reasons of health, lack of effectiveness or non-compliance with plaque control, patient desires, or therapist s decision, appropriate treatment to control the disease may be deferred or declined. Compromised Therapy In certain cases, because of the severity and extent of disease and the age and health of the patient, treatment that is not intended to attain optimal results may be indicated. In these cases, initial therapy may become the end point. This should include timely periodontal maintenance. Periodontal Surgery In patients with chronic periodontitis with advanced loss of periodontal support, periodontal surgery should be considered. A variety of surgical treatment modalities may be appropriate in managing the patient. 1. Gingival augmentation therapy 2. Regenerative therapy: A. Bone replacement grafts; B. Guided tissue regeneration; C. Combined regenerative techniques. 3. Resective therapy: A. Flaps with or without osseous surgery; B. Root resective therapy; C. Gingivectomy. Other Treatments 1. Refinement therapy to achieve therapeutic objectives. 2. Treatment of residual risk factors should be considered; e.g., cessation of smoking, control of diabetes. 3. Problem focused surgical therapy. This approach may be considered to enhance effective root debridement, to possibly enhance regenerative therapy, to reduce gingival recession, etc. on patients who demonstrate effective plaque control and favorable compliance in their prior dental care. 4. An appropriate initial interval for periodontal maintenance should be determined by the clinician (see on Periodontal Maintenance Parameter, pages ). OUTCOMES ASSESSMENT 1. The desired outcome of periodontal therapy in patients with chronic periodontitis with advanced loss of periodontal support should include: A. Significant reduction of clinical signs of gingival inflammation; B. Reduction of probing depths; C. Stabilization or gain of clinical attachment; D. Radiographic resolution of osseous lesions; E. Progress toward occlusal stability; F. Progress toward the reduction of clinically detectable plaque to a level compatible with gingival health. 2. Areas where the periodontal condition does not resolve may occur and be characterized by: A. Inflammation of the gingival tissues; B. Persistent or increasing probing depths; C. Lack of stability of clinical attachment; D. Persistent clinically detectable plaque levels not compatible with gingival health. 3. In patients where the periodontal condition does not resolve, additional therapy may be required. A. Not all patients or sites will respond equally or acceptably; B. Additional therapy may be warranted on a site specific basis. J Periodontol May 2000 (Supplement) 857

15 Supplement SELECTED RESOURCES 1. The American Academy of Periodontology. Guidelines for Periodontal Therapy (Position Paper). J Periodontol 1998;69: The American Academy of Periodontology. Proceedings of the World Workshop in Clinical Periodontics. Chicago: The American Academy of Periodontology; Cobb CM. Non-surgical pocket therapy: Mechanical. Ann Periodontol 1996;1: Drisko CH. Non-surgical pocket therapy: Pharmacotherapeutics. Ann Periodontol 1996;1: Gher ME. Non-surgical pocket therapy: Dental occlusion. Ann Periodontol 1996;1: Consensus report on non-surgical pocket therapy: Mechanical, pharmacotherapeutics, and dental occlusion. Ann Periodontol 1996;1: Palcanis KG. Surgical pocket therapy. Ann Periodontol 1996;1: Consensus report on surgical pocket therapy. Ann Periodontol 1996;1: Barrington E, Nevins M. Diagnosing periodontal diseases. J Am Dent Assoc 1990;121: Genco R, Goldman H, Cohen D. Contemporary Periodontics. St. Louis: The CV Mosby Company; Greenstein G, Caton J. Periodontal disease activity: A critical assessment. J Periodontol 1990;61: Hall WB, Roberts WE, Labarre EE. Decision Making in Dental Treatment Planning. St. Louis: The CV Mosby Company; Kornman K, Löe H. The role of local factors in the etiology of periodontal diseases. Periodontol ; 2: Lang N, Löe H. Clinical management of periodontal diseases. Periodontol ;2: Lang N, Adler R, Joss A, Nyman S. Absence of bleeding on probing. An indicator of periodontal stability. J Clin Periodontol 1990;17: Ranney R. Classification of periodontal diseases. Periodontol ;2: Walker CB, Gordon JM, Magnusson I, Clark WB. A role for antibiotics in the treatment of refractory periodontitis. J Periodontol 1993;64(Suppl.): Wilson T, Kornman K, Newman M. Advances in Periodontology. Chicago: Quintessence Publishing; The American Academy of Periodontology. Treatment of Gingivitis and Periodontitis (Position Paper). J Periodontol 1997;68: Becker W, Berg L, Becker B. Untreated periodontal disease: A longitudinal study. J Periodontol 1979;50: Lindhe J, Haffajee AD, Socransky S. Progression of periodontal disease in adult subjects in the absence of periodontal therapy. J Clin Periodontol 1983;10: Knowles J, Burgett FG, Nissle R, Schick R, Morrison E, Ramfjord S. Results of periodontal treatment related to pocket depth and attachment level. Eight years. J Periodontol 1979;50: Barrington EP. An overview of periodontal surgical procedures. J Periodontol 1981;52: Marks M, Corn H. Atlas of Adult Orthodontics. Philadelphia: Lea & Febiger; Wang HL, Burgett FG, Shyr Y, Ramfjord S. The influence of molar furcation involvement and mobility on future clinical periodontal attachment loss. J Periodontol 1994;65: Parameter on Chronic Periodontitis With Advanced Loss of Periodontal Support Volume 71 Number 5 (Supplement)

16 Parameter on Refractory Periodontitis* Parameters of Care Supplement The American Academy of Periodontology has developed the following parameter on the treatment of refractory periodontitis. Patients should be informed of the disease process, therapeutic alternatives, potential complications, expected results, and their responsibility in treatment. Consequences of no treatment should be explained. No treatment is very likely to result in further progression of the disease and eventual tooth loss. Given this information, patients should then be able to make informed decisions regarding their periodontal therapy. J Periodontol 2000;71: KEY WORDS Disease progression; periodontitis/complications; patient care planning; periodontitis/therapy. CLINICAL DIAGNOSIS Definition Refractory periodontitis is not a single disease entity. The term refers to destructive periodontal diseases in patients who, when longitudinally monitored, demonstrate additional attachment loss at one or more sites, despite well-executed therapeutic and patient efforts to stop the progression of disease. These diseases may occur in situations where conventional therapy has failed to eliminate microbial reservoirs of infection, or has resulted in the emergence or superinfection of opportunistic pathogens. They may also occur as the result of a complexity of unknown factors which may compromise the host s response to conventional periodontal therapy. Such conventional therapy frequently includes most, but not necessarily all, of the following: 1. Patient education and training in personal oral hygiene; behavior modification. 2. Thorough scaling and root planing to remove microbial deposits and eliminate anatomical root features that might act as reservoirs for microbial infection. 3. Use of local and/or systemic antimicrobial agents. 4. Elimination or correction of defective restorations and other local factors that might interfere with oral hygiene efforts or act as retention sites for periodontal pathogens. 5. Surgical therapy. 6. Extraction of severely involved teeth. 7. Occlusal therapy. 8. Periodontal maintenance and re-evaluation. The refractory designation can be applied to all forms of destructive periodontal disease that appear to * Approved by the Board of Trustees, American Academy of Periodontology, May be non-responsive to treatment; e.g., refractory chronic periodontitis and refractory aggressive periodontitis. Clinical Features The primary feature of refractory periodontitis is the occurrence of additional clinical attachment loss after repeated attempts to control the infection with conventional periodontal therapy. The diagnosis of refractory periodontitis should only be made in patients who satisfactorily comply with recommended oral hygiene procedures and follow a rigorous program of periodontal maintenance. Refractory periodontitis is usually diagnosed after the conclusion of conventional active therapy. This diagnosis is not appropriate for patients who: 1. Have received incomplete or inadequate conventional therapy. 2. Have identifiable systemic conditions that may increase their susceptibility to periodontal infections such as diabetes mellitus, immunosuppressive disorders, certain blood dyscrasias, and pregnancy. 3. Have localized areas of rapid attachment loss which are related to factors such as: root fracture, retrograde pulpal diseases, foreign body impaction, or various root anomalies. 4. Have recurrence of progressive periodontitis after many years of successful periodontal maintenance. THERAPEUTIC GOALS The goal of therapy for refractory periodontitis is to arrest or slow the progression of the disease. Due to the complexity and many unknown factors, control may not be possible in all instances. In such cases a reasonable treatment objective is to slow the progression of the disease. J Periodontol Mary 2000 (Supplement) 859

17 Supplement TREATMENT CONSIDERATIONS Once the diagnosis of refractory periodontitis has been made, the following steps may be taken: 1. Collection of subgingival microbial samples from selected sites for analyses, possibly including antibiotic-sensitivity testing. 2. Selection and administration of an appropriate antibiotic regimen. 3. In conjunction with the administration of an antimicrobial regimen, conventional periodontal therapies may be used. 4. Reevaluation with microbiological testing as indicated. 5. Identification and attempt to control risk factors (e.g., smoking). 6. Intensified periodontal maintenance program which may include shorter intervals between appointments with microbiologic testing if indicated (Parameter on Periodontal Maintenance, pages ). OUTCOMES ASSESSMENT 1. The desired outcome for patients with refractory periodontitis includes arresting or controlling the disease. 2. Due to the complexity and many unknown factors of refractory periodontitis, control may not be possible in all instances. In such cases, a reasonable treatment objective is to slow the progression of the disease. SELECTED RESOURCES 1. The American Academy of Periodontology. Periodontal diagnosis and diagnostic aids: Consensus report. In: Proceedings of the World Workshop in Clinical Periodontics. Chicago: American Academy of Periodontology; 1989:I/23-I/ Drisko, C. Non-surgical pocket therapy: Pharmacotherapeutics. Ann Periodontol 1996;1: Consensus report on non-surgical pocket therapy: Mechanical, pharmacotherapeutics, and dental occlusion. Ann Periodontol 1996;1: Oshrain HI, Telsey B, Mandel ID. Neutrophil chemotaxis in refractory cases of periodontitis. J Clin Periodontol 1987;14: Magnusson I, Marks RG, Clark WB, Walker CB, Low SB, McArthur WP. Clinical, microbiological and immunological characteristics of subjects with refractory periodontal disease. J Clin Periodontol 1991;18: Walker C, Gordon J. The effect of clindamycin on the microbiota associated with refractory periodontitis. J Periodontol 1990:61: Gordon J, Walker C, Hovliaras C, Socransky S. Efficacy of clindamycin hydrocloride in refractory periodontitis: 24- month results. J Periodontol 1990;61: Kornman KS, Karl EH. The effect of long-term lowdose tetracycline therapy on the subgingival microflora in refractory adult periodontitis. J Periodontol 1982;53: Loesche WJ, Syed SA, Morrison EC, Kerry GA, Higgins T, Stoll J. Metronidizole in periodontitis. I. Clinical and bacteriological results after 15 to 30 weeks. J Periodontol 1984;55: Magnusson I, Clark WB, Low SB, Maruniak J, Marks RG, Walker CB. Effect of non-surgical periodontal therapy combined with adjunctive antibiotics in subjects with refractory periodontal disease. I. Clinical results. J Clin Periodontol 1989;16: Lundström Å, Johansson L-Å, Hamp S-E. Effect of combined systemic antimicrobial therapy and mechanical plaque control in patients with recurrent periodontal disease. J Clin Periodontol 1984;11: Hirschfeld L, Wasserman B. A long-term survey of tooth loss in 600 treated periodontal patients. J Periodontol 1978;49: McFall WT Jr. Tooth loss in 100 treated patients with periodontal disease. A long-term study. J Periodontol 1982;53: Slots J, Rams RE. New views on periodontal microbiota in special patient categories. J Clin Periodontol 1991; 18: Pertuiset JH, Saglie FR, Lofthus J, Rezende M, Sanz M. Recurrent periodontal disease and bacterial presence in the gingiva. J Periodontol 1987;58: Adriaens PA, De Boever JA, Loesche WJ. Bacterial invasion in root cemetum and radicular dentin of periodontally diseased teeth in humans: A reservoir of periodontopathic bacteria. J Periodontol 1988;59: Telsey B, Oshrain HI, Ellison SA. A simplified laboratory procedure to select an appropriate antibiotic for treatment of refractory periodontitis. J Periodontol 1986; 57: Fine DH. Microbial identification and antibiotic sensitivity testing, an aid for patients refractory to periodontal therapy. J Clin Periodontol 1994;21: Hernichel-Gorbach E, Kornman KS, Holt SC, et al. Host responses in patients with generalized refractory periodontitis. J Periodontol 1994;65: Collins JG, Offenbacher S, Arnold RR. Effects of a combination therapy to eliminate Porphyromonas gingivalis in refractory periodontitis. J Periodontol 1993;64: Nyman S, Lindhe J, Rosling B. Periodontal surgery in plaque-infected dentitions. J Clin Periodontol 1977; 4: Wilson TG, Glover ME, Malik AK, Schoen JA, Dorsett D. Tooth loss in maintenance patients in a private periodontal practice. J Periodontol 1987;58: Haffajee AD, Socransky SS, Dzink JL, Taubman MA, Ebersole JL. Clinical, microbiological and immunological features of subjects with refractory periodontal diseases. J Clin Periodontol 1988;15: Listgarten MA, Lai CH, Young V. Microbial composition and pattern of antibiotic resistance in subgingival microbial samples from patients with refractory periodontitis. J Periodontol 1993;64: Slots J, Emrich LJ, Genco RJ, Rosling BG: Relationship between some subgingival bacteria and periodontal pocket depth and gain or loss of periodontal attachment after treatment of adult periodontitis. J Clin Periodontol 1985;12: Armitage GC. Development of a classification system for periodontal diseases and conditions. Ann Periodontol 1999;4: Parameter on Refractory Periodontitis Volume 71 Number 5 (Supplement)

18 Parameter on Mucogingival Conditions* Parameters of Care Supplement The American Academy of Periodontology has developed the following parameter on the identification and treatment of mucogingival conditions. Patients should be informed of the disease process, therapeutic alternatives, potential complications, expected results, and their responsibility in treatment. Consequences of no treatment should be explained. The consequences of this option may range from no change in the condition to progression of the defect. Given this information, patients should then be able to make informed decisions regarding their periodontal therapy. J Periodontol 2000;71: KEY WORDS Gingival diseases/etiology; gingiva/anatomy and histology; health education, dental; risk factors; patient care planning; disease progression. CLINICAL DIAGNOSIS Definition Mucogingival conditions are deviations from the normal anatomic relationship between the gingival margin and the mucogingival junction (MGJ). Clinical Features Common mucogingival conditions are recession, absence or reduction of keratinized tissue, and probing depths extending beyond the MGJ. Anatomical variations that may complicate the management of these conditions include tooth position, frenulum insertions and vestibular depth. Variations in ridge anatomy may be associated with mucogingival conditions. Examination Mucogingival conditions may be detected during a comprehensive or problem-focused periodontal examination. The problem-focused examination should also include appropriate screening techniques to evaluate for periodontal or other oral diseases. Features of a problem-focused examination that apply to mucogingival conditions: 1. A medical history should be taken and evaluated to identify predisposing conditions that may affect treatment or patient management. 2. A dental history including the chief complaint should be taken and evaluated. 3. Relevant findings from probing and visual exam- * Approved by the Board of Trustees, American Academy of Periodontology, May inations of the periodontium and the intraoral soft tissues should be collected and recorded. 4. While radiographs do not detect mucogingival problems, appropriate radiographs may be utilized as part of the examination. 5. Mucogingival relationships should be evaluated to identify deficiencies of keratinized tissue, abnormal frenulum insertions, and other tissue abnormalities. 6. Etiologic factors that may have an impact on the results of therapy should be evaluated. 7. Variations in ridge configuration should also be evaluated. THERAPEUTIC GOALS Mucogingival therapy is defined as non-surgical and/or surgical correction of defects in morphology, position, and/or amount of soft tissue and underlying bone. The goals of mucogingival therapy are to help maintain the dentition or its replacements in health with good function and esthetics, and may include restoring anatomic form and function. A further goal is to reduce the risk of progressive recession. This may be accomplished with a variety of procedures including root coverage, gingival augmentation, pocket reduction, and ridge reconstruction, as well as control of etiologic factors. Several mucogingival conditions may occur concurrently, necessitating the consideration of combining or sequencing surgical techniques. TREATMENT CONSIDERATIONS 1. In order to monitor changes of mucogingival conditions, baseline findings should be recorded. J Periodontol May 2000 (Supplement) 861

19 Supplement 2. Depending on the mucogingival conditions, the following treatments may be indicated: A. Control of inflammation through plaque control, scaling and root planing, and/or antimicrobial agents; B. Gingival augmentation therapy; C. Root coverage; D. Crown lengthening; E. Extraction site grafts to prevent ridge collapse; F. Papilla regeneration; G. Exposure of unerupted teeth. H. Frenectomy; I. Surgical procedures to reduce probing depths; J. Tooth movement; K. Odontoplasty. 3. Vestibular depth alteration. Treatment options for altering vestibular depth may include gingival augmentation and/or vestibuloplasty. 4. Ridge augmentation. Ridge defects that may need correction prior to prosthetic rehabilitation can be treated by a variety of tissue grafting techniques and/or guided tissue regeneration. The selection of surgical procedures may depend on the configuration of the defect, availability of donor tissue, and esthetic considerations of the patient. OUTCOMES ASSESSMENT 1. The desired outcome of periodontal therapy for patients with mucogingival conditions should result in: A. Correction of the mucogingival condition; B. Cessation of further recession; C. Tissues free of clinical signs of inflammation; D. Return to function in health and comfort; E. Satisfactory esthetics. 2. Areas where the condition did not resolve may be characterized by: A. Persistence of the mucogingival problem; B. Persistence of clinical signs of inflammation; C. Less than satisfactory esthetics. 3. In patients where the condition did not resolve, additional therapy may be required. A. Not all patients or sites will respond equally or acceptably; B. Additional therapy may be warranted on a site specific basis. 2. Coatoam G, Behrents R, Bissada N. The width of keratinized gingiva during orthodontic treatment: Its significance and impact on periodontal status. J Periodontol 1981;52: Freeman AL, Salkin LM, Stein MD, Green K. A 10-year longitudinal study of untreated mucogingival defects. J Periodontol 1992;63: Wennström, JL. Mucogingival therapy. Ann Periodontol 1996;1: Consensus report on mucogingival therapy. Ann Periodontol 1996;1: Kennedy JE, Bird WC, Palcanis KG, Dorfman HS. A longitudinal evaluation of varying widths of attached gingiva. J Clin Periodontol 1985;12: Lang NP, Löe H. The relationship between the width of keratinized gingiva and gingival health. J Periodontol 1972;43: Langer L, Langer B. The subepithelial connective tissue graft for treatment of gingival recession. Dent Clin North Am 1993;37: Maynard JG Jr. The rationale for mucogingival therapy in the child and adolescent. Int J Periodontics Restorative Dent 1987;7(1): Miller PD Jr. A classification of marginal tissue recession. Int J Periodontics Restorative Dent 1985;5(2): Seibert JS. Treatment of moderate, localized alveolar ridge defects. Preventive and reconstructive concepts in therapy. Dent Clin North Am 1993;37: Smukler H. Laterally positioned mucoperiosteal pedicle grafts in the treatment of denuded roots. A clinical and statistical study. J Periodontol 1976;47: Stetler KJ, Bissada NF. Significance of the width of keratinized gingiva on the periodontal status of teeth with submarginal restorations. J Periodontol 1987;58: Tarnow DP. Semilunar coronally repositioned flap. J Clin Periodontol 1986;13: Wennström JL. Lack of association between width of attached gingiva and development of soft tissue recession. A 5-year longitudinal study. J Clin Periodontol 1987;14: Marks M, Corn H. Atlas of Adult Orthodontics. Philadelphia: Lea & Febiger; SELECTED RESOURCES 1. Caffesse R, Alspach S, Morrison E, Burgett F. Lateral sliding flaps with and without citric acid. Int J Periodontics Restorative Dent 1987;7(6): Parameter on Mucogingival Conditions Volume 71 Number 5 (Supplement)

20 Parameter On Acute Periodontal Diseases* Parameters of Care Supplement The American Academy of Periodontology has developed the following parameter on the treatment of acute periodontal diseases. Patients should be informed about the disease process, therapeutic alternatives, potential complications, expected results, and their responsibility in treatment. Consequences of no treatment should be explained. Failure to treat acute periodontal diseases appropriately can result in progressive loss of periodontal supporting tissues, an adverse change in prognosis, and could result in tooth loss. Given this information, patients should then be able to make informed decisions regarding their periodontal therapy. J Periodontol 2000;71: KEY WORDS Disease progression; health education, dental; periodontal disease/therapy; patient care planning; risk factors. CLINICAL DIAGNOSIS Definition Acute periodontal diseases are clinical conditions of rapid onset that involve the periodontium or associated structures and may be characterized by pain or discomfort and infection. They may or may not be related to gingivitis or periodontitis. They may be localized or generalized, with possible systemic manifestations. Clinical Features Acute periodontal infections include: 1. Gingival abscess; 2. Periodontal abscess; 3. Necrotizing periodontal diseases; 4. Herpetic gingivostomatitis; 5. Pericoronal abscess (pericoronitis); 6. Combined periodontal-endodontic lesions. GINGIVAL ABSCESS Clinical Diagnosis Definition. A localized purulent infection that involves the marginal gingiva or interdental papilla. Clinical features. Clinical features may include combinations of the following signs and symptoms: a localized area of swelling in the marginal gingiva or interdental papillae, with a red, smooth, shiny surface. The lesion may be painful and appear pointed. A purulent exudate may be present. * Approved by the Board of Trustees, American Academy of Periodontology, May Therapeutic Goals The goal of therapy for a gingival abscess is the elimination of the acute signs and symptoms as soon as possible. Treatment Considerations Treatment considerations include drainage to relieve the acute symptoms and mitigation of the etiology. Outcomes Assessment 1. The desired outcome of therapy in patients with a gingival abscess should be the resolution of the signs and symptoms of the disease and the restoration of gingival health and function. 2. Areas where the gingival condition does not resolve may be characterized by recurrence of the abscess or change to a chronic condition. 3. Factors which may contribute to the nonresolution of this condition may include the failure to remove the cause of irritation, incomplete debridement, or inaccurate diagnosis. 4. In patients where the gingival condition does not resolve, additional therapy may be required. PERIODONTAL ABSCESS Clinical Diagnosis Definition: A localized purulent infection within the tissues adjacent to the periodontal pocket that may lead to the destruction of periodontal ligament and alveolar bone. Clinical features. Clinical features may include combinations of the following signs and symptoms: a smooth, shiny swelling of the gingiva; pain, with the area of swelling tender to touch; a purulent exudate; J Periodontol May 2000 (Supplement) 863