If the soft tissue is separated, the bone surface is exposed, some of the bone is grinded away, and the multi-grown tooth is extracted. 3.Resin treatment: If the adjacent surface of the incisor forms caries and causes food embedding, low-speed ball drill can be applied to grind away the decayed tooth tissue from the lingual surface, and composite resin is used to fill the tooth to restore the adjacent relationship and reduce the gap. If necessary, resin preformed crown can be made to prevent the filling material from repeatedly falling off and causing the expansion of caries, etc.