Can't really answer this, but I have had to do some research on TMJ -
temporo mandibular joint dysfuction - for the day job.

My sources say it can occur(among other reasons)  when teeth do not align
properly and an assessment by a dentist is essential.

Heather Welford Neil
NCT bfc Newcastle upon Tyne UK

             ***********************************************
The LACTNET mailing list is powered by L-Soft's renowned
LISTSERV(R) list management software together with L-Soft's LSMTP(TM)
mailer for lightning fast mail delivery. For more information, go to:
http://www.lsoft.com/LISTSERV-powered.html