How harmful are common porcelain teeth?

There is no harm. Porcelain teeth are made of a variety of materials, such as nickel alloy porcelain teeth, cobalt-chromium porcelain teeth, zirconia all-ceramic teeth and so on. You need to choose your own porcelain teeth according to your oral conditions. Porcelain teeth are not the higher the price, only the best that suits you. Characteristics of common types of porcelain teeth. Titanium alloy porcelain teeth: due to the limitation of titanium casting technology and equipment, it is impossible to cast titanium alloy raw materials in inert gas, but titanium alloy raw materials are cast in natural air. As a result, titanium metal is oxidized and volatilized in the air. In addition, titanium itself is light in weight, so when centrifugal casting, titanium metal falls backwards and cannot enter the casting. The so-called titanium alloy porcelain teeth are all different from the standard of 6% titanium. The actual titanium content is sometimes lower than that of nickel-chromium porcelain itself. This is a kind of porcelain tooth. Nickel-chromium alloy porcelain teeth: the main components are nickel and chromium. This is also one of the types of porcelain teeth. Its cobalt content is higher than that of nickel-based alloy, generally 25%, and there are other elements such as copper, tungsten, niobium, silicon, ruthenium, aluminum and molybdenum. Because nickel can react with saliva in the mouth to generate free nickel, which accumulates on the edge of the crown and gums, thus producing a well-known black line (gray staining).