The representative of precious metal porcelain teeth is gold alloy porcelain teeth. Gold has a long history of application in human cosmetic, ancient Egypt has “gold wire beauty” circulation, because gold is more compatible with the human body. Gold has been used as a filling material for a long time, and is one of the most ideal materials for restorations. It has the advantages of titanium, and stronger, non-irritating, and the combination of gold and porcelain is very strong, and better compatibility with the tissue, in the porcelain teeth and gums in contact with the place will not bruise. In addition, porcelain powder can reflect its own color on the surface of gold, making porcelain teeth more beautiful and fully meet the requirements of cosmetic restoration. Enough yellow, right, and the portion is also very good. The characteristics of precious metal porcelain teeth 1, gold is the best biocompatible metal, is the first metal used for porcelain teeth, does not react with human tissue, there is no gum inflammation, blackening of the neck edge, metal odor and other problems. 2, gold color and dentin color (the color of the inner layer of the tooth) close, so that porcelain teeth look more realistic and beautiful (normal teeth outside the enamel layer of transparency similar to the porcelain layer of porcelain teeth, enamel under the dentin is light yellow, the color of gold is also light yellow and other metal crowns for black) 3, there will be no other metal porcelain teeth night light environment porcelain teeth greening problem (other porcelain teeth because Metal crown is black, porcelain porcelain layer similar to the enamel has a certain transparency, night lighting, light by the crown reflex after making porcelain teeth look green) 4, gold ductility is very good, so in all porcelain teeth gold porcelain teeth (especially gold deposited porcelain teeth) is the best fit. The closeness is the first criterion for judging the quality of porcelain teeth. 5, gold is soft, high purity gold is mostly used for single crown restoration, for the restoration of missing teeth, to increase the hardness, adding other components of the metal, such as palladium, so that it can be used for the restoration of a few missing teeth. 6, precious metal porcelain teeth according to the gold content of different prices, of course, the higher the gold content, the higher the price. Disadvantages: What is the disadvantage of gold porcelain teeth, is expensive, in addition to expensive, it is the most ideal metal to do porcelain teeth. Because the price is expensive, hospitals and processing plants are not willing to rework, so whether the doctor or technician pay extra attention to the factory to do gold porcelain teeth are high level technicians, which ensures the high quality of porcelain teeth. If you have the conditions, precious metal porcelain teeth is not the only choice, but in the performance of the front teeth color, the best or all-porcelain crowns.