Gingival Diseases
A. Dental plaque-induced gingival diseases
B. Non-plaque-induced gingival lesions
II. Chronic Periodontitis
(slight: 1-2 mm CAL; moderate: 3-4 mm CAL; severe: > 5 mm CAL)
A. Localized
B. Generalized (> 30% of sites are involved)
III. Aggressive Periodontitis
(slight: 1-2 mm CAL; moderate: 3-4 mm CAL;
severe: > 5 mm CAL)
A. Localized
B. Generalized (> 30% of sites are involved)
IV. Periodontitis as a Manifestation of Systemic Diseases
A. Associated with hematological disorders
B. Associated with genetic disorders
C. Not otherwise specified
V. Necrotizing Periodontal Diseases
A. Necrotizing ulcerative gingivitis
B. Necrotizing ulcerative periodontitis
VI. Abscesses of the Periodontium
A. Gingival abscess
B. Periodontal abscess
C. Pericoronal abscess
VII. Periodontitis Associated With Endodontic Lesions
A. Combined periodontic-endodontic lesions
VIII. Developmental or Acquired Deformities and Conditions
A. Localized tooth-related factors that modify or predispose
to plaque-induced gingival diseases/periodontitis
B. Mucogingival deformities and conditions around teeth
C. Mucogingival deformities and conditions on edentulous
ridges
D. Occlusal trauma