Botulinum toxin A (ie, Botox, Dysport, Xeomin, Juveau) is a great treatment option for TMJ (temporomandibular joint) pain and associated symptoms. We have a lot of patients coming to see us for this and it is one of the most satisfying treatments from patient perspective. Almost all patients receive significant improvement in pain.
Another very important use of botulinum toxin in this area is for reduction of muscle volume on side of the cheeks. This muscle is called masseter and it is a strong, thick muscle that helps you in chewing food. In many people, this muscle is over developed and causes side of your cheeks to look bigger. This condition is called masseter hypertrophy. This gives the appearance of square-angled jaw which is often viewed as an unaesthetic characteristic and has led to increasing attention to procedures aimed at attaining a narrower, so-called "v-line" face. As such, much attention has turned to reduction of a square-angled mandible.
One great, non-surgical option is to use botulinum toxin to reduce size of this muscle. Our study showed that there is a predictable reduction in size of the muscle. So this treatment really works! With that said, the treatment does have to be repeated every 3-4 months, just like for any areas treated with botulinum toxin.