Cerebral palsy and tmj

My stepson has both cerebral palsy and tmj. He is 28 years old and is confined to a wheel chair and has been all of his life. He is having extreme amounts of pain from his tmj. Now my husband and his ex-wife are looking for an oral surgeon to correct the problem. Has there been any other parents out there who have a child with CP and TMJ and has the same issues? We are located in Arizona. Any suggestions or ideas will be greatly appreciated.

Thank you,
Bev.