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.
Cell phone use and car crashes. Most of the information you hear or read about distracted driving is focused on cell phone use while driving. Evidence shows cell phone use is neither the most dangerous of distractions for drivers, nor is it the most common cause of car collisions. In a Virginia Tech 100 car study, The most dangerous distracted driving activity was reaching for a moving object, making a crash almost 9 times more likely.