Porcelain teeth do not need to be removed every day and combine the toughness of metal crowns with the color and beauty of all-porcelain teeth. Porcelain teeth is a routine oral treatment program, mainly used for missing teeth repair; first of all, it is different from removable partial denture, belongs to the fixed restoration, its stability and comfort is better than the movable teeth, and do not need to be removed and cleaned every day; Porcelain teeth are made of metal material on the inside and porcelain material on the outside, taking into account the toughness of the metal and the aesthetics of the porcelain teeth, are suitable for the front teeth and the back of the missing teeth restoration. However, there are some limitations of porcelain teeth, the inner layer of metal will be corroded and discolored, and is not suitable for MRI; because it is not all-ceramic material, there will be chipping and so on, affecting the aesthetics of the teeth.