Abfraction lesion | definition of abfraction lesion by Medical dictionary
loss of tooth structure, usually in a wedge-shaped pattern in the cervical area of the tooth, attributed to flexure and fatigue in an area away from the point of loading (usually cervical).
Farlex Partner Medical Dictionary © Farlex 2012
ab·frac·tion le·sion (ab-frakshŭn lēzhŭn)
Loss of tooth structure, usually in a wedge-shaped pattern in the cervical area of the tooth, attributed to flexure and fatigue in an area away from the point of loading (usually cervical).
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive
Abfraction lesion formation in maxillary incisors, canines and premolars: a finite element study.
Undermining of enamel as a mechanism of abfraction lesion formation: A finite element study.
. Generally associated with occlusal trauma where the anatomic crown of the tooth has flexure.
These stress profiles, therefore, seem to mimic the pattern of clinical presentation of abfraction lesions. A similar pattern was observed palatally in Palamara et al.
The decision to represent an upper central incisor was based on evidence from recent studies ,  which demonstrates that abfraction lesions are most commonly found in upper incisors, followed by premolars and canines, the latter being the teeth least commonly affected.