Tooth wear is the loss of tooth surface that is not caused by decay or trauma. Tooth wear can affect the enamel, dentine or pulp of a tooth.

Grinding the teeth can cause wear. The canines and the front incisors wear first. The enamel can be lost exposing the soft dentine underneath
When teeth are ground from side to side particularly during sleep, This can wear down the front teeth and the molar cusps can be chipped and damaged.

Clenching also tenses the jaw muscles and creates impact within the skull. This may cause pain and headaches.
An Occlusal Splint can be used to protect the teeth and prevent contact.