A means of categorizing the disease processes involving the periodontal tissues. Classification systems are used for most diseases and help clinicians to design appropriate therapeutic strategies based on evidence from appropriately conducted clinical trials. Classification provides the local and international healthcare community with a means of communication. A number of periodontal classification schemes have been proposed, modified, and updated as knowledge of the pathobiology of periodontal disease has improved; they may be grouped according to whether there is either periodontal or only gingival involvement.
Classification of conditions of the periodontium
Dental plaque associated
Specific bacterial origin
Modified by systemic factors
Manifestation of systemic condition
Modified by medications
Necrotizing periodontal disease
Modified by malnutrition
Abscesses of the periodontium
Manifestations of systemic conditions
Developmental or acquired conditions
Foreign body reactions
Not otherwise specified
Armitage G., Development of a classification system for periodontal diseases and conditions. International Workshop for a Classification of Periodontal Diseases and Conditions. Annals of Periodontology 1999; 4:1:1–6.