In general, if it is determined that the calculus is quite firmly attached to the tooth surface, it will not fall off by itself. If there is really a special case where the calculus falls off by itself, it means first of all that the periodontal situation has become very poor, and the amount of calculus is very high and very large, and this may occur when the calculus falls off by itself. It is necessary to go to the dentist as soon as possible for systematic periodontal treatment, the first thing to do is supragingival scaling, which is often called scaling, which can remove most of the supragingival tartar as well as plaque. If there is more calculus and it reaches below the gums, it is necessary to combine this treatment with subgingival scaling to complete the periodontal treatment process.