The difference between expensive and cheap filling materials is mainly in the hardness, permeability and adhesive properties of the material, and it is recommended to choose filling materials according to the needs. 1. Hardness. The hardness of expensive filling materials is better than that of cheap materials, which is more wear-resistant and has a longer service life in the clinic. 2. Translucency. Expensive filling materials have a wider range of color choices and are closer to natural tooth color after filling, making them more beautiful. 3. Bonding performance. Expensive filling material bonding performance is better, unlike cheap filling material easy to fall off, operation bonding convenient physician patients, easy to shape. Cheap filling material is not easy to shape, handling is not good easy to cause the material to fall off. In addition, imported filling materials are more expensive than domestic materials, it is recommended to consult a professional physician’s opinion, according to their own oral cavity according to the need to choose.