Currently completely metal teeth have been gradually eliminated, such as the former routine use of stainless steel teeth or hammered crowns, in the clinic has been very rare, although they are very cheap, but because of the various disadvantages so basically eliminated. Now more popular is the metal porcelain crowns, the internal crown is metal, the outside inlay porcelain, so more beautiful, the cost ranges from 900-1000 yuan, patients can choose according to their own consumption level. If it is more than 1000 slightly more expensive, usually with a computer scan printed out of the metal inner crown, and then inlaid on the outside, it is better precision, and the inner crown in the mouth more closely, very suitable for patients to use, and the material does not cause gum staining. However, as long as the metal type of crown, there is a certain corrosion effect on the gums, it is recommended that patients should choose all-ceramic type of material.