ADA AAP Classification of Periodontal Disease

I frequently find myself looking for this table, I hope it will be useful to you. This classification system was developed jointly by the American Dental Association (ADA) and the American Academy of Periodontology (AAP) in 1986. It is normally referred to as AAP/ADA classification. This system is mostly based on loss of attachment. While more modern and comprehensive classifications are available, this one is still frequently used to communicate with dental insurance companies.

If you are looking for the latest classification of Periodontal Disease, you can find it here (IWCP Classification).

ADA Class

Description

Type I
Gingivitis

No loss of attachment
Bleeding on probing may be present
Type II
Early Periodontitis
Pocket depth or attachment loss: 3-4mm
Bleeding on probing may be present
Localized area of gingival recession
Possible grade I furcation involvement
Type III
Moderate Periodontitis
Pocket depths or attachment loss 4-6 mm
Bleeding on probing
Grade I or II furcation involvement
Class I mobility
Type IV
Advanced Periodontitis
Pocket depths or attachment loss >6 mm
Bleeding on probing
Grade II or III furcation involvement
Class II or III mobility
Type V
Refractory & Juvenile Periodontitis
Periodontitis not responding to conventional therapy or which recurs soon after treatment.
Juvenile forms of periodontitis.
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