Finding that you are waking up with tension in your jaw. You could be one of the many people who grind and clench their teeth at night. There are many ways of treating this problem. One of them is a nightguard but it is often uncomfortable to wear. There is another way, we can inject a muscle relaxant into the masseter muscle to relax it and this will in turn slim your face and reduce the extra stress you put on your teeth, no more broken teeth!