The treatment plan is determined by the size of the crack, its location, and whether the internal tissues of the tooth are affected. In suitable cases, composite restorations, fillings, or crowns that surround and support the tooth may be considered. If the crack reaches the living tissue of the tooth called the pulp, root canal treatment may be necessary. In some very advanced cracks that extend to the tooth root, it may not be possible to preserve the tooth. The appropriate treatment can only be determined after clinical and, if necessary, radiographic evaluation.