Tooth decay is mainly related to daily dietary habits, oral hygiene habits, in the 20’s long tooth decay must go to the hospital as early as possible for treatment, because if the decay is in the stage of shallow caries treatment, the patient will not have a particularly painful feeling of toothache, shallow caries treatment is relatively the easiest, through the resin material can be filled with teeth. If you miss the early treatment stage, from shallow caries to medium caries and deep caries, the patient’s toothache will be more obvious and strong, and the development of deep caries or even pulpitis will need to be treated with root canal therapy, and general fillings can not solve the problem.