Diagnosis and inter-disciplinary treatment of altered passive eruption, the digital evolution

Altered passive eruption (APE) is a condition better known as ‘gummy smile’, patients affected by APE display short and square clinical crowns and an excessive display of gingiva when smiling.APE was classified as type 1 or 2 depending on its features, in type 1 the gingival margin is coronal to the CEJ, the teeth look short and squared, in type 2 the ging ival margin seems to be at the right position, it is the bone crest that is not. The position of the bone crest is defined by sub types A and B.
Source: Seminars in Orthodontics - Category: Dentistry Authors: Source Type: research