Teeth grinding, also called bruxism, is often regarded as a safe, though annoying, habit. Some people develop bruxism from an inability to deal with stress or anxiety. Teeth grinding can cause abrasion to the chewing surfaces of your teeth. It can also affect to shape of the teeth. Bruxism is slightly correctable. A common therapy requires the use of a unique piece of equipment worn while sleeping. Less intrusive, though just as effective methods could involve biofeedback, and behavior modification, such as tongue exercises and learning how to properly align your tongue, teeth and lips.
The other option is botox which is done by injecting small doses of botulinum toxin right into the masseter muscle (the large muscle that moves the jaw), the muscle is weakened enough to stop spontaneous grinding of the teeth and clenching of the jaw. This substantially relaxes the muscle and lowers the wear and tear on the teeth due to grinding.