I've just got back from a band rehearsal, and after a lot of loud blowing I noticed that my top front teeth were hurting a little. Nothing too painful, but quite uncomfortable when I 'prodded' them to make sure they weren't about to fall out. Do you think this could be due to too much pressure on the mouthpiece when playing loud dynamics? Not noticed it for a few years, but it came back tonight. Had three band rehearsals in three nights, so could be wear and tear from blowing a lot I guess. There are a lot of loud dynamics in The Dark Side Of The Moon!