1 clenching your jaw or grinding your teeth during sleep (bruxism) â which overworks the jaw muscles and puts pressure on the joint (often caused by stress) 2  wear and tear of the inside of the jaw joint â usually caused by osteoarthritis.  injury to the jaw joint â for example, after a blow to the face or surgery.
Mobile Phone Offences. It is a specific offence to use a handâheld phone or similar device, when driving. Most offences will be dealt with by way of 3 penalty points and a Â£60 Fixed Penalty Notice but if the matter proceeds to a Court hearing, the fine can be as much as Â£1,000 or Â£2,500 if you were driving a bus, coach or any heavy goods vehicle.
Higher levels of education were also found to be associated with higher levels of cell phone use and text messaging while driving. A substantial proportion of the American public believes that drivers using cell phones are a serious traffic safety problem and that it is unacceptable to use a cell phone while driving.