Tooth wear facets are characterized as flat, round or sharply angled and polished surfaces on the occlusal or incisal areas of the teeth and may be the result of excessive attrition of one tooth against the other. ... Severe tooth wear has an impact on oral pain levels, dental appearance and function What is wear facets of teeth? Dental attrition is tooth wear caused by tooth to tooth contact. Well-defined wear facets appear on tooth cusps or ridges. This can be caused by several factors, including parafunctional habits such as bruxism or clenching, developmental defects, hard or rough-textured diet, and absence of posterior teeth support.