Bruxism is an involuntary movement disorder characterised by excessive clenching and/or grinding of the teeth. Among the most common symptoms are migraines, a tired jaw, sensitive teeth or a stiff neck. Although it is not related to dental decay or gum disease, bruxism is one of the leading causes of early loss and damage of teeth. It also leads to excessive teeth contact over a prolonged period which can cause premature enamel dissipation.
Most people with bruxism are unaware they are grinding or clenching as it often occurs at night during sleep (termed nocturnal bruxism or sleep bruxism), but it may also happen during the day (diurnal bruxism). Over 30% of the population is affected by bruxism and the trend is on the rise.