Clinically, whenever tooth decay is found, it is always recommended to repair the tooth as soon as possible. Once the tooth decay appears, it means the hard tissue of the tooth body is disturbed by the decay. At this time, if it is not treated, it will only make the tooth decay deepen gradually, from general shallow caries to medium and deep caries, and further development may form pulpitis, and at this period the affected tooth will have severe pain, and the pain is difficult to be accepted by the patient, so at the early stage of the development of tooth decay, it is necessary to go to a professional dental medical institution, and after the physician’s examination, apply the dental special high-speed turbine drill to remove the decayed part of the decayed tooth, and apply the dental special filling material to repair the decayed part. The decayed part of the tooth should be removed and repaired with special dental filling material.