Tooth fractures can be superficial or go deep into the tooth. If the pulp has been exposed, a red or dark spot can sometimes be seen on the broken surface. When the inner tissue of the tooth is exposed, it can become inflamed or die, and infection can spread towards the root. Dogs often show surprisingly little even though the tooth hurts.
Avoid testing the tooth by pressing on it. Book a dental examination instead. Dental X-rays are often needed to assess the root and the tissue around the tooth. Depending on which tooth is damaged, how old the injury is and how the pulp looks, treatment may mean root canal treatment or removing the tooth.
Have it assessed when you discover a broken tooth, especially if the broken surface looks red or dark, the tooth changes colour or your dog starts avoiding hard things. Swelling of the face or obvious pain calls for quicker care.