There are two benefits of filling: 1.Preventing the further development of the lesion and relieving the pain. 2.Restore chewing function. Filling can terminate the occurrence and development of these diseases, so it can be seen that the earlier the treatment of dental caries, the better, and it is better to fill the cavity when there are no symptoms yet. With the continuous progress of science and technology, the current oral treatment equipment in China also keeps up with the trend of the times. It is very convenient to fill the cavity, and the earlier the cavity is filled, the easier it is, not only the pain is less, but also the money and effort is saved. In order to detect the cavity which has no symptom at the early stage, you should go to the hospital for examination and treatment regularly, once every six months is appropriate.