Periodontal diagnosis and classification

In dentistry, numerous types of classification schemes have been developed to describe the teeth and gum tissue in a way that categorizes various defects. All of these classification schemes combine to provide the periodontal diagnosis of the aforementioned tissues in their various states of health and disease.

Alveolar ridge deficiency

In 1983, Seibert classified alveolar crestal defects:

Class I: Buccolingual loss with crestal heigh maintained Class II: Vertical loss with buccolingual width maintained Class III: Combination of buccolingual and vertical loss