Liz, which kind of cat trap are you going to use? When Fister was trapped in the yard (by a professional) he went totally beserk! That may have been the time when he broke his front tooth. The man did it in the daytime and we kept an eye on the trap. The less time in there the better! When he got in, a big blanket was put over. That should calm him down. Perhaps it's also a good idea to get a 2 mg. Valium (Diazepam) from the vet and put it in his food in the cage, to help him calm down quicker. Ask your vet about it!

Good luck, Liz! I hope he is healthy and he can get along with your other cats! Looking forward to see some pics!