Mild caries does not form cavities when you can choose to use chemical therapy for treatment, commonly used chemical drugs have fluoride and silver nitrate, that is, you can use fluoride treatment, can promote tooth remineralization to effectively avoid caries; you can also choose to remove the decayed material in a timely manner to do dental filling, that is, to choose the prophylactic resin filling surgery. Usually there are shallow in caries can be ground after filling, commonly used can also choose composite resin or suspicious can be done fossa closure, can effectively prevent caries to avoid the depth of caries development. When the depth of dental caries develops, it is particularly easy to produce pain, easy to produce hot and cold stimulation pain or night pain phenomenon, and easy to produce pulpitis symptoms.