Teeth having some defects are a common problem and everyone's teeth will appear a little flaw. Many friends have appeared the situation of relatively large teeth. Many people have chosen porcelain teeth to repair the defects on the teeth. But porcelain teeth have many materials. Many patients do not know how to choose their own dental porcelain teeth materials.
Precious metal alloy porcelain crown refers to use of precious metals to produce metal crown ceramic crowns. Precious metals have good chemical inertness, which has the ability of anti-oxidation and corrosion resistance. Precious metals commonly used in dentistry include gold, platinum, palladium, etc.
Non precious metal alloy porcelain crown refers to use of non precious metal crown. Non precious metals are easily oxidized at high temperature and their corrosion resistance is relatively weak. We know that our oral environment is wet and non noble metal will readily precipitate metal ions in the humid environment and may cause gray discoloration of gums. Part of the metal also has sensitization. Because of its inexpensive price, there still has a certain market.
Titanium alloy porcelain crown is an excellent metal material and widely used in medical, aviation and other fields. Titanium should belong to the non precious metal but because it has many different characteristics, so it is listed separately. Titanium has good biocompatibility, corrosion resistance, low thermal conductivity and so on. It is an ideal oral cosmetic material. However, the melting point of titanium alloy is very high and the casting process is difficult, it is easy to be oxidized and the combination of metal base and ceramic layer is relatively poor. So they limit its wide application.
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