When you come into our Naples, FL office for BOTOX to treat TMJ, Dr. Junée F. Gardy will place multiple injections into different areas of your facial muscles. Where you receive the injections will depend on your symptoms, but primarily, the jaw muscles are targeted. This usually includes the masseter and temporalis muscles, which both aid in chewing. If you suffer from headaches as a result of TMJ, injections may also be administered into the muscles in your forehead and temples.