Bruxism "Bruxism is a repetitive jaw-muscle activity characterized by clenching or grinding of the teeth and/or by bracing or thrusting of the mandible. Bruxism has two distinct circadian manifestations: it can occur during sleep (indicated as sleep bruxism) or during wakefulness (indicated as awake bruxism)."All forms of bruxism entail forceful contact between the biting surfaces of the upper and lower teeth. In grinding and tapping this contact involves movement of the mandible and unpleasant sounds which can often awaken sleeping partners and even people asleep in adjacent rooms. Clenching (or clamping), on the other hand, involves inaudible, sustained, forceful tooth contact
Habitual offender who commit the same crime is not an innovation. For example, New York has a persistent felony offender law that dates back to the late 19th century. These early habitual offender laws did not provide for mandatory sentencing. In Australia, various states and territories have adopted habitual offender legislation. Under the provisions of the "Habitual Criminals Act 1957" (NSW), an offender can be designated a habitual criminal and given an additional protective sentence of between five and 14 years imprisonment. The offender must be at least 25 years of age, have served sentences for at least two indictable offenses, and