Can Botox Be Used to Treat TMJ?

My question is about using botox for treatment of TMJ sydrome & also getting benefits of cosmetic appearance. I'm a 49 year old white male that has suffered from TMJ syndrome since the early 1980s. I had Bilateral TMJ arthroplasties done, which were unsuccessful. I'm on a number of medications for severe firbroymaliga, Lumbar dicsogenic syndrome & lumbar facet syndrome. I do go to a pain clinic. I'm currently on 6 different pain medications. I would really like to try Botox since i heard so much about it being used for myscofacial pain syndrome. Does it work?