I recently found a line of knowledge-practice relating to holistic dentistry specifically that acknowledges and addresses biomechanical-physiological aspects of the bite. E.g. occlusion issues with the teeth, where the jaw is unable to land and find a comfortable-relaxed position - and so jaw/head muscles continue to engage, spasm, or guard completely - causing a potential systematic cascading failure that has a "ridiculous" amount of severe symptoms possible, and why it's ridiculous - is that you'd think this would be part of mainstream dentistry practices because of how foundational the bite position is, yet it's not mainstream; the first diagnostic is using a device called BioPak, hooked up to the head/face at different position with electrodes, it monitors muscle activity - and can tell which specific muscles are firing-resting and at what rate.
They also use TENS as part of their protocol.
It took me 8 years to stumble upon finding the practice-protocol for a problem I figured I had but couldn't find dentists to solve for it.
The training for dentists and full protocol-processes followed, and has been evolving, is from Las Vegas Institute - https://www.lviglobal.com
They have a directory listing of the dentists who have done their various courses. NOTE: Not all are up-to-date and so be sure to check they have the necessary relevant training, and that the course wasn't taken say 15 years ago; their dentists are recommended to regularly do courses to keep track of the improvements to their processes.
They also use TENS as part of their protocol.
It took me 8 years to stumble upon finding the practice-protocol for a problem I figured I had but couldn't find dentists to solve for it.