Hi Waterdawg,
Sorry to hear about the TMJ. The Scubadoc link has more information than you might ever want to know about the condition. Check it and the links within.
Surgery is indicated in less than 2% of all TMJ cases. If it suggested that you do surgery as a first treatment, run as fast as possible. You may have to go onto an anti-inflammatory like Vioxx or Celebrex. Muscles relaxants and sedatives that have muscle relaxing qualities can be used (like Valium) but only for short term use.
An anterior bite splint like a NTI-tss device may produce relief. The SeaCure may actually increase the amount of clenching forces applied to the regulator. This is because posterior teeth are making contact and a neuromuscular reflex that tells the jaw to bear down harder if something is placed between the molar teeth.
The SeaCure also requires that a diver position the jaws in the "centric" position. Since you have no idea what that is , it is improbable that you will do so successfully.
The anti-inflammatory route is probably the best course of immediate action. Advil taken, 3 tablets every 6 hours or Aleve, 2 tablets every 8 hours for at least a week may help.
Avoid large sandwiches or wide opening, stiffle a wide yawn. No gum chewing. The US Divers Comfo-bite may be useful because you dont have to press on it.
See your dentist ASAP for a bite splint, bite adjustment or other pallative treatment.
I hope this helps. Definitely check the Scubadoc site.
Larry Stein:doctor: