Small holes in the teeth may be congenital malformations or dental caries, which require the removal of the outer layer of decayed material and the use of resin fillings to restore the normal shape of the tooth. 1. Congenital developmental deformity. Normal teeth have grooves on the maxillofacial surface, but there will be no small holes, small holes may be congenital developmental abnormalities of the teeth, such as malformed lingual fossa, generally do not reach the pulpal cavity only for the dentin enamel morphology, structural deformities can be used to remove the outer layer of decayed material, the use of resin fillings. If there are symptoms of pulpitis, it is necessary to first root canal treatment and then resin filling. 2. Caries. If there is a small hole on the surface of the tooth, and a probe can be inserted into the hole, the tooth is often decayed, and if there are no symptoms of endodontitis, special instruments should be used to remove the decayed tooth tissues and then fill the tooth with resin. If there is no endodontitis, it is necessary to remove the decayed tooth tissue with specialized instruments and use resin to fill the hole.