When a wormhole appears in the tooth, you should go to the dentist in time to check whether the depth of the wormhole involves the nerve, and check the degree of tooth decay. If it is not deep enough to reach the nerve, the tooth can be filled directly, and if the nerve has been involved, it needs to be treated by killing the nerve. If it has decayed to the bottom of the tooth and penetrated through the tooth, the tooth needs to be extracted for treatment. Teeth with cavities are usually because they are not treated in time when plaque retention is found. It is recommended to check your oral cavity every six months to a year or so and have your teeth cleaned. If there is a cavity, it should be treated in time. If there is a small hole that is not filled in time, a large hole will appear, and a large hole will lead to a tooth splitting or the bottom of the tooth penetrating through the phenomenon, and it will only be able to be extracted.