2 is a little early, but I suspect your horse has simply shed a 'baby tooth'. Usually I see this in a horse's 3 year old year, but some do shed them earlier than others. When a front baby tooth comes out, it does tend to look like the horse has been hit/kicked in the teeth & had one broken. This time of year your colt is likely getting on to 2 1/2 years, so that's really not so 'early' for the front teeth to start shedding.
In the event that your fellow did actually have a front tooth broken, the fact is it isn't a permanent tooth, so I wouldn't think you'd need to have anything done with it anyway. I assume it's not bothering him at all, and that being the case I would leave it. His permanent teeth will come through any time within the next year, and if there were a broken off cap it should get pushed off as the permanent tooth comes out.
But, I do suspect this is just a "shed" tooth and you'll see the permanent one starting to grow down very soon now.
