I have never heard of that!
I have serious trouble with my TMJ, like migraine causing issues.
I was referred to a physio specialist years ago and went through a million exercises/procedures to try to find something that worked.
First she tried pressure points, as TMJ muscles are apparently different than any other muscle in the body. The pressure points when done correctly are supposed to cause the muscles to ‘release’ and relieve the tension. Your oral surgeon should either be able to show you how to do these or refer you to someone who can. You can do the pressure points from outside your cheeks but they are most effective from inside your mouth. Word of warning, it F!*ing hurts. I cried. Every damn time. even now I do. I found this method most effective, as I can do it myself now anywhere/anytime, which is really helpful for diverting on coming brain death (read:migraines).
Secondly, hot compresses (super hot! mini water bottle style almost) alternating with ice. It is supposed to relax and soothe the muscles. I found that this felt nice, and was relaxing, but wasn’t really effective.
Ultrasound. No jokes. The spec. would use a wand just like they use for looking at babies, goo and everything. The frequency causes the muscles to ‘react’ tense/release. It was a minor help, but more often than not it felt like a warm gooey vibrator on my face. kinda ew.
Posture correction. I didn’t realize until I saw the specialist that I could NOT hold my shoulders down & back where they should have been. Surprisingly the TMJ’s are attached to neck muscles which are in turn connected to your traps (and so on and so forth) so if one muscle is causing problems, more often than not others down the line are affected as well. The specialist was keen to point out that my problem would have been 100 times worse if I was well endowed (as large breasted women commonly have back problems).
Acupuncture. I thought it was cool but a little mad-scientist at the same time. The acupuncture itself didn’t hurt, but trying not to yawn/yawning when the needles were in was BRUTAL. The Specialist attached the needles to a VERY low voltage meter, that basically electrocuted the TMJ, also a method to try and cause the muscle to ‘react’ and get out of tensiontensiontension! mode. I wasn’t really sold on it, and the electroshock business was actually why I decided to stop going, it just seemed too extreme for me.
It totally sucks, and I hope you can find something that works!