Have you seen http://scuba-doc.com/lkdjw.html ?

Adrian

Ooh - good guess!  :O)

As far as I remember i've only felt it once, which was (if I remember
rightly after a week's diving in Cornwall last year).  That was doing a
couple of diver per day for 5 or 6 days (although we had a day off in the
middle), and using club kit (Apeks TX40 regs).  I was also fairly new to
diving at that time (a couple of months after my first dive), so not sure
whether it was just because of using the relatively large reg for a week, or
whether it was because I was new and biting a bit too hard, or if they're
just rubbish mouthpieces.  Never had a problem since, although after that
time the only long trips (ie more than a couple of days repetitive diving)
have been on my own kit with smaller lighter regs, so i'll never know what
caused it.

Not aware of anyone who gets a still jaw from diving, certainly not
regularly from a day or two day's diving, so must be associated either with
multi-day diving with heavy regs, or beginners biting too hard, or both...
thats my theory anyway!  :O)

David

David

Its not commonly complained about.
You might try asking on  Longstreath
but apart from a Kirby hard hat rubbing the underneath of your chin in
shallow water,
and sore gums using a rebreather for clamming (probably due to rubbing
of the mouthpiece during the constant left-right head movement) I
think you will find little evidence.

--
Steve Barlow