When a tooth is broken in half, it is usually still possible to get another filling treatment. In many cases, the tooth is half broken and the nerve has been exposed. In these cases, a root canal may be needed to kill the nerve before a later restoration, which can be considered a crown. Generally, this kind of half-broken tooth can still be retained for treatment. If the tooth is broken in half but there is no nerve exposure, a localized filling can also be placed to restore the shape of the tooth. However, the retention is not good, and some fillings may fall out, so full crowns are necessary to restore the shape of the tooth. Therefore, after the tooth is broken in half, should be as soon as possible to the regular dental hospital to take pictures to check, make the appropriate treatment, for there is no nerve exposure to do different treatments.