Posted by Chuck(G) on April 25, 2001 at 12:51:47:
In Reply to: Pitching problems posted by Gareth. on April 24, 2001 at 13:14:57:
Another suggestion:  try changing mouthpieces.
Not too long ago, I went to my dentist complaining of a severe toothache in one of my upper premolars.  Xrays and probing revealed nothing and it was suggested that I get some scans done at the local hospital for possible sinus involvement.  Nothing--and the pain didn't go away.
That following weekend, I brought the subject up to my teacher. He noted that I had been using a new mouthpiece for the past two weeks.  I felt like an absolute idiot.  A change of mouthpiece back to the old one and the pain disappeared within two days.
Moral of the story:  There are a lot of nerves winding through your face and effects of mouthpiece pressure can be hard to predict.