Hi Barbara,
You've been given some good advice already. TMJ symptoms resulting from the regulator often is a sign that your jaws are already fatigued for other reasons. You don't necessarily have to have TMJ Syndrome but you most probably clench your teeth and the added fatigue created by clencing on the regulator causes symptoms.
I would like to bet that even when you aren't diving, you might complain of stiffness or tireness of the jaws upon awakening. Inability to keep your mouth open even a few minutes during dental visits or if chewing gum. Inability to open as wide as you want. Popping or clicking of the jaws upon wide opening. Possible tension headaches. These are all guesses on my part but they usually go along with your complaint.
Try this link to Dive Medicine Online for more information about this condition.
http://scuba-doc.com/lkdjw.html
The SeaCure regulator bite is quite useful...IF...fabricated the correct way. The instruction are rather rudimentary with regards to the proper way to achieve the "proper" bite. One trick is to gently pull downward on the button of your chin while closing into the warm bite. This tends to "seat" the jaw into the joint better. If you are experiencing pain at the time you are molding the bite, there is a better chance that the resultant mouthpiece will have registered a pathologic position of the jaw and actually cause more problems.
I use this type of bite myself. Be aware that this device has different orifice diameters depending on the type of regulator. Check with your LDS.
You should have your dentist check your bite or refer you to someone who can help.
Regards,
Laurence Stein, DDS
:doctor:
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