Dental filling prices are different mainly because of the difference in the material used to fill the teeth, currently used to fill the teeth of the main three materials: amalgam, composite resin, glass ion. 1. Silver amalgam: relatively inexpensive, relatively wear-resistant, but there is no adhesion between the tooth and the tooth, can only rely on the mechanical role of inlay in the tooth, so the amount of grinding is larger, more likely to appear after the operation of the sensitive situation. 2. Composite resin: the price of this material is relatively high, the hole shape of the teeth require low, less grinding, and the adhesion between the dental tissue. Because the edge of the cavity is well closed, it can also prevent the continuation of the destruction of caries. 3. glass ionomer: there is adhesive force, has a certain anti-caries function, but the strength is insufficient, and can be dissolved in saliva so can not do permanent filling, generally used for the restoration of milk teeth. It is recommended to go to the hospital for treatment, which material is recommended to consult the doctor.