The main components of this material are mercury, metal salts and a small amount of other metals. It takes a large area to repair the oral cavity with this material, so as to better bear the pressure brought by the bite force of teeth. Amalgam has good firmness and durability, and can be used as a material for posterior teeth restoration. But because of the color of metallic silver, it will make the mouth look ugly.

Second, glass ionic materials.

This kind of material has very good biocompatibility and is one of the very good dental restoration materials, which has little irritation to dental pulp and good adhesion. Using this material to repair oral cavity can prevent secondary dental caries and is more suitable for the elderly and children to repair teeth.

Third, composite resin.

Most hospitals will use composite resin to repair oral cavity. This material is mainly synthesized from organic matter, with very stable color and strong viscosity. It is suitable for the restoration of anterior teeth, and the color of the restored teeth is very close to that of their own teeth, which will not affect the appearance. However, using this material to repair the oral cavity requires high technology and must be treated in a regular hospital.