Injuries to the front of the mouth
Injuries to the front of the mouth and incisor teeth are not uncommon. They usually result from the horse having grabbed hold of an object (eg bars across the front of a stable), got their teeth caught, panicked and jerked backwards. The first two images show a typical injury and as you can see these are very amenable to being repaired with wire.
Images three and four are a recent case of a much less common type of injury to this area. This was a yearling which we think fell onto the front of its mouth whilst in its stable. As you can see the central two incisors with a large piece of surrounding bone were pushed backwards into the horses mouth. These teeth could not be saved and were removed with the adjacent bone. The fourth image shows the result immediately after surgery. The teeth that were lost were temporary teeth along with one permanent incisor that had not yet erupted. All being well when this horse is mature it should only be lacking one incisor.