Excessive attrition of teeth

**Definition:** The pathological wearing away of tooth substance as a result of tooth-to-tooth contact.

**Long definition:** Generalized attrition caused by excessive functional or parafunctional mandibular movements. Attrition is mechanical wear of the incisor or occlusal tooth structure as a result of functional or parafunctional movements of the mandible. Although a certain degree of attrition is expected with age, it is important to note abnormally advanced attrition.