First of all, for the issue of cost, the price varies slightly in different areas, different levels of hospitals, public or private dental institutions. Generally speaking, it is cheaper to repair a simple tooth, even in a public tertiary hospital, the cost of filling a tooth is only about two or three hundred dollars. If it is confirmed that there is worm tooth, that is, there is tooth decay, it must be filled as soon as possible, because if it is not repaired as soon as possible, the tooth decay will develop further and gradually form pulpitis, and the further development of pulpitis may form periapical infection, jaw bone pulpitis, surrounding space infection and other 1 series of diseases. This is actually the same as our normal medical treatment, if we don’t see the small disease, it will develop into a big disease, and if the small disease doesn’t cost money, it will cost more money for the serious big disease. Therefore, it is the wisest choice to go to professional dentistry for decay and filling treatment in the early stage of tooth decay.