What is bruxism? Bruxism is involuntary clenching and/or grinding of the teeth. Contrary to popular belief, it can occur during the day (“wakeful bruxism”, “awake bruxism”, or “diurnal bruxism”), while asleep (“sleep bruxism” is a better term than “nocturnal bruxism”), or both. Sleep bruxism is a form of parasomnia that occurs during non-REM sleep during…