I had the cavitational surgery about 12 years ago, and the problems I was experiencing were eliminated.
The tooth was right below the right side jaw hinge which would catch, and click when I chewed, or just opened my mouth.
Pain from the jaw hinge down the back of my head and neck, and into my shoulder.
So far a complete success.
Did he use a cavitat machine to make the diagnosis?
Root canals as I understand it are not the only reason to get an infection in the jaw bone.
Any tooth that has been removed, and the ligaments that were holding that tooth in place not removed [socket cleaned out] could cause the problem too.
Here's a good explaination of Cavitations.
http://www.thenaturalrecoveryplan.com/articles/research-cavitations.html