Clinically, there is no such thing as the best way to eliminate tooth decay (caries). Generally, it can be treated by filling and restoration or root canal therapy, medication, and tooth extraction. 1. Filling and restoration or root canal treatment: When the pulp has not been invaded, the tooth can be restored by filling the cavity after removing the decayed tooth. If it has led to pulpitis, root canal treatment should be done. 2. Medication: If the decay is mild, you can go to a specialist hospital for treatment. Fluoride is used to remineralize the tooth and stop the process of caries. Medication is a clinical procedure rather than a regular oral medication, and should be administered by a physician. 3. Tooth extraction: In case of serious damage to the decayed tooth, which has no value for retention, it is necessary to go to the hospital in time to extract the decayed tooth to avoid affecting the health of other teeth. If there is a problem with the teeth, it is recommended to go to the hospital in time for examination and choose the appropriate way of treatment under the guidance of the doctor.