Bruxism
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Grinding the teeth can cause wear. This is particular common during sleep. Bruxism is one of the most common sleep disorders. The canines and front incisors wear first. The hard enamel can be lost exposing the soft dentine underneath. This may affect the appearance of the front teeth. Excessive wear can affect the health of the tooth's nerve.
If you feel this may be affecting you, seek advice at Craigmillar Dental Centre for suitability for occlusal splints.