Definition : Wasting is defined as any gradual loss of tooth substance, characterized by the formation of smooth polished surfaces without regard to the possible mechanism of this loss. (Carranza's Clinical Periodontology 10th ed; Clinical Diagnosis; 540-60)

Tooth wear is a common problem with a prevalence of 97%, out of which 7% exhibit pathological degrees of wear that require treatment. (Smith and Robb 1996)

The forms of wasting are erosion, abrasion, attrition and abfraction.