Metal porcelain teeth are divided into ordinary porcelain, shoulder porcelain, titanium alloy porcelain, gold-plated porcelain and precious metal porcelain according to the materials and manufacturing process of the inner crown. Each has unique characteristics:
1. Jinhe inner crown. Precious metal porcelain teeth. The inner crown contains more than 84% gold, and also contains platinum, palladium and other metals, which can not only reduce the weight of the restoration, but also strengthen its strength, and it is not easy to appear metal allergies. The mother of metal porcelain teeth. The price varies according to the weight of gold used. It has excellent biocompatibility. It is safe for oral mucosa. The teeth and neck gums have a natural warm color, good aesthetic effect, and realistic shape. Unique gold color, porcelain color matching effect is very ideal, no harm to natural teeth. And because the precious metals do not chemically corrode in the human environment, there is no toxic side effect on the human body, and no metallic black lines appear on the gums.
2. Gold deposits. The porcelain crown made of gold deposition technology reduces the process of turning the mold, making the production error smaller and tightly contacting the real teeth. Because the metal inner crown is very thin, the porcelain is more natural and beautiful, which is the preferred type of anterior restoration. Its characteristics are: no allergic reaction, beautiful and firm.
3. Nickel-chromium alloy. The inner crown is cast from a base metal nickel-chromium alloy. In a complex oral environment, the metal parts exposed in the oral cavity will slowly decompose and release black oxides to cause local tissue staining. The most important reason for the thread is that the nickel-chromium alloy porcelain teeth do have shortcomings. The most common cause is the darkening of the gums and allergies. Porcelain teeth made of nickel-chromium alloy materials are not stable enough, and are easily oxidized and not resistant to corrosion. When immersed in oral saliva for a long time, nickel ions are easy to precipitate. Although it is very safe, individual patients still have allergic reactions to nickel ions.