Which term describes the pathological loss of tooth structure resulting from tooth-to-tooth contact, as occurs in bruxism?

Attrition is defined as the mechanical wearing away of tooth structure caused by tooth-to-tooth contact. In bruxism (nocturnal teeth grinding or clenching), repetitive occlusal forces generate significant attrition of the occlusal, incisal, and proximal surfaces, creating characteristic flat, shiny wear facets that match opposing tooth surfaces. Erosion is caused by acid dissolution. Abrasion is caused by external mechanical forces (toothbrush, abrasive particles). Abfraction results from fatigue fractures in enamel and dentin at the cervical region due to cyclic compressive and tensile stresses during eccentric occlusion.