By injecting small doses of botulinum toxin directly into the masseter muscle (the large muscle that moves the jaw), the muscle is weakened enough to stop involuntary grinding of the teeth and clenching of the jaw.

This significantly relaxes the muscle and reduces the wear and tear on the teeth due to grinding.

Multiple studies have shown that botulinum toxin injections into the masseter and temporalis muscles result in relaxation of the muscles and improvement of bruxism and the pain associated with chronic clenching and grinding. Injection points to treat masseter hypertrophy or bruxism