The temporalis muscle is situated on the side of the head and is one of four major muscles used for chewing. It attaches to the jaw bone (mandible), and it helps to close the jaw when chewing. The muscle, and its bony attachment, can be cut through a skin incision that is placed in a natural skin crease between the lip and cheek. The tendon and bone are then sewn to the corner of the mouth in order to attach them together. This results in the corner of the mouth being pulled upwards. In many patients, they may use the temporalis muscle to produce a smile. In general, the amount of movement with this smile is small and somewhat subtle. However, this procedure provides a very long-lasting suspension of the face, and it immediately results in improved speech and eating. There is mild to moderate discomfort in the jaw after this procedure, but not significantly more than the other surgical options. This is also a relatively quick procedure that can last for many years.