Bruxism also known as teeth grinding is a condition in which there is clenching or teeth grinding, during sleep or during the day. This causes the masseter muscle to grow in size. With bigger masseter muscles, clenching and grinding tends to get worse.
After the dental problems have been ruled out. Relaxing the masseter muscle by injecting botulinum toxin is effective in shrinking this muscle, which is an effective treatment for bruxism, while preserving the normal movements in this area.