Clenching and grinding of the teeth is a common problem affecting up to 30% of people and usually occurs during sleep. It is believed to be due to an abnormal bite or missing or crooked teeth. Daytime bruxism may be increased by stress and anxiety.
Bruxism can result in headaches, aching jaw muscles and hypersensitive teeth. Over time it may cause wear and even breakage of teeth, crowns and fillings.
This condition can be successfully controlled with the use of a muscle relaxer injected into the massetter muscle which is used for chewing. Many people prefer this to wearing a night splint and treatment usually lasts 5 to 6 months. Treatment of the Massetter muscle reduces the bulk of the muscle resulting in a slimmer appearance to the face.
The standard dose for treating bruxism is 40 units of the strongest muscle relaxer.