Worm tooth cavity is caries, usually choose the filling treatment, the common filling method is to use a dental drill to remove the corroded part of the tooth, and then use the filling material to repair, to restore the original shape of the tooth and the relationship between the tooth and the neighboring teeth as well as the occlusal height, so as to ensure normal chewing. If the decayed area of the tooth is large, it is recommended to have the tooth restored with porcelain braces or inlays. If the tooth is a baby tooth, the usual choice is to have a pre-formed crown restoration of the baby tooth. If the worm tooth has already had a nerve leakage or a dead pulp tooth, dental root canal treatment can be done to remove the nerve and then do the tooth filling, if necessary, also need to do the tooth porcelain braces restoration. After removing the nerve of the tooth, there will be no supply of nutrients to the tooth, which will cause the tooth to fall out in chunks, so it should be done in time to repair the tooth with porcelain braces.