Today, my barn had the horse dentist come out to take a look at the horse's teeth, and see which horses needed their teeth rasped and such. Well, it was Jerry's turn, and he was feeling around in his mouth. He said everything was pretty normal, except for on the right side there were extremely sharp sides on his teeth, and he had ulcers right by them.

He even had me stick my hand up in my poor pony's mouth to feel (it was interesting, but... gross... and I never knew how big a horse's mouth was!) Well, obviously we're going to get them done as soon as we can (he couldn't do them today for some reason), but in the meantime what precautions should I take to keep him from hurting himself? He doesn't fuss with the bit when I ride him, he eats fine, and he's drinking, so it doesn't seem like it's causing TOO much pain.
What should I do?
Oh, by the way, we're probably going to have him come back sometime this week. So it won't be a long term prevention thing, just how to keep him from hurting himself.