The treatment for cavities depends on the severity of the decay. Dental fillings may be used for early-stage cavities to restore the tooth’s structure and prevent further damage. If the decay has reached the pulp, a root canal procedure may be necessary to remove the infected tissue and save the tooth. In severe cases where the tooth cannot be saved, tooth extraction may be necessary. Your dentist will recommend the best course of action based on the extent of the decay and your needs.