If the caries is not very serious, it is better not to choose the extraction method. There are many treatments for caries, the simplest of which is non-surgical treatment, and filling will be done when a cavity is formed to a certain extent. The simplest method of caries is non-surgical treatment, which is divided into three kinds: 1, fluoride will be applied to the surface of the teeth, for these positions to pacify or remove the stimulus, promote remineralization, remove the symptoms of stimulus sensitivity; 2, remineralization treatment is specially developed artificial remineralization solution, including calcium, phosphorus, and fluoride, etc., so that demineralized surface of the teeth to re-mineralize; 3, fossa closure is generally for the newborn permanent teeth, the points, gaps The deeper the point, gap and fissure, the deeper the case will take this way of prevention, generally acid etching and then coated with sealant, so that the deep fossa grooves of the external stimuli to isolate, can effectively reduce the factors of caries onset. If a relatively large carious cavity has been formed, it needs to be filled, and the doctor will choose the material to be used according to the situation, and the commonly used clinical materials are amalgam, composite resin, or glass ionomer. The decay is first removed cleanly and then the cavity is filled to ensure resistance and retention. However, not all teeth are not extracted. When it is time to extract the tooth, and it cannot be retained by conventional means, extraction will still be chosen, but it requires a professional doctor’s judgment, so it is recommended to go to a regular dental clinic for consultation and treatment.