Equine Dental care is a very important part of horse keeping. While they don’t prefer to have someone using a big file in their mouth, they will tolerate it. Sharp edges from uneven wear can affect how a horse eats and maintains weight. Dental issues can also affect how they behave with a bit in their mouth. Nerves in their teeth are very deep within, unlike humans, and while rasping sounds bad and horses fuss against it, there is no pain associated with it.