Bruxism simply means 'gnashing of the teeth' and is often characterised by either the grinding or clenching of the teeth. Bruxism is more of a habit and often occurs during sleep. Most people are not aware of their bruxism but some sufferers will go on to develop associated symptons, such as, jaw pain and headaches.
Sometimes the over exercised jaw muscles can result in a square jaw appearance which can change and harden the face.
By injecting Botulinum Toxin around the jaw line (masseter muscle), the overactive muscles can be relaxed, restoring the natural, oval shape of the face.