After noticing swelling on the nose of a three year old, contacted vet . Recalled a past incident and thought it might be retained caps. Vet agreed and asked if I could see them. Did not know what to look for, and my horses do not respond to the "say aahh" to open their mouth. To help keep mouth open I put the round handle of a tool between her teeth to see if that would allow me to see her teeth. Horses chew on anything you put in their mouth. In about 2 seconds a cap came off. I remembered they always bite down on the "float" tool when I want to float teeth, so I tried that and another cap came out in two pieces within moments. This was a few weeks ago and the swelling is almost gone. For the little effort it takes, I will do this intermittently on the 3 yr old horses, since it can't hurt and may help. Might this trick help to minimize tooth bumps?