Many people may think that all-porcelain teeth are porcelain teeth and there is no difference between the two. However, this is not the case, but the price of the two can be seen in this. The general price of all-porcelain teeth to thousands of dollars, far more expensive than the general porcelain teeth. So why are all-porcelain teeth so expensive? Here we will look at the differences between all-porcelain and porcelain teeth, so that the facts to explain the reason for the expensive. All-porcelain and porcelain teeth differences are as follows: 1, the shape of transparent more like real teeth: This is a difficult task to complete porcelain teeth, because the porcelain metal crown opaque, need to use opaque porcelain to cover the metal substrate, affecting the transparency of the restoration, making porcelain teeth after cosmetic has an obvious chalky, pale, false, in the neck of the teeth more metal substrate caused by the “black line “affect the aesthetics. All-ceramic teeth with good transparency and refractive and high-strength crown to solve this cosmetic stubborn, so that the cervical part of the tooth can also achieve good aesthetic results. Metal porcelain teeth All-porcelain porcelain teeth 2, will not cause wear and tear: the hardness of porcelain teeth is greater than the tooth enamel, can cause wear and tear on the jaw teeth. The hardness of all-porcelain teeth is similar to the enamel, and does not cause wear and tear on the jaw teeth. Metal porcelain teeth All-porcelain teeth 3, no gum “black line” problem: the price of ordinary porcelain teeth is relatively low, currently used in China more. However, this porcelain teeth have the following shortcomings: poor edge fit; poor biocompatibility with the human body, some patients wearing a period of time after the cervical edge of the gum tissue will appear “black line”, in foreign countries there are even such porcelain teeth caused by allergic reactions reported in the medical records, and then, so the clinical easier to appear chipped porcelain phenomenon, affecting the aesthetic The all-porcelain teeth do not have this problem. Ordinary metal porcelain teeth All-porcelain teeth 4, maintenance of gum health: some porcelain teeth metal, the gums have more serious stimulation, some people (especially women) are allergic to it, resulting in swollen gums, bleeding, and even some patients are also allergic to precious metals; all-porcelain teeth are basically not found sensitive cases. 5, the combination of internal and external crowns: the combination of metal and porcelain is a weak link, can often see porcelain and metal stripping, revealing the case of gray and black metal. All-porcelain teeth is the inner and outer crowns are porcelain, porcelain and porcelain combination will not appear in this case.