Treatment Overview

A wide jaw creates a squarer shape of the face. While the square jaw may be desirable in men, it is not desired for a feminine appearance.

Wide jaws can be caused by overactive muscles in the sides of the face. This jaw masseter muscle can grow in size, leading to a heavier-set jaw, and in turn, a more masculine appearance.

The size of the masseter muscle can be congenital or acquired. An acquired wide jaw is caused as the muscle increases in size as it is exercised, whether that be through chewing gum, clenching teeth, or bruxism (excessive teeth grinding). A congenital wide jaw is apparent throughout life, but can get worse with exercise.

If the bone contour of the face contributes more to the square appearance, this may not improve with non-surgical treatment alone. However, if the muscle is also oversized, it can be partially treated using this method with Botox injections.