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 is in the 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-porcelain teeth with good transparency and refractive and high-strength crown to solve this cosmetic stubbornness, so that the neck of the tooth can also achieve a good aesthetic effect; 2, will not cause wear: porcelain dental hardness is greater than the tooth enamel, can cause wear on the jaw teeth. The hardness of all-ceramic teeth and tooth enamel is similar, do not cause wear on the jaw teeth; 3, no gum “black line” problem: metal oxidation in the oral cavity to form gray oxide, scattered deposits to the edge of the gums, causing causes gray, affecting the beauty; all-ceramic teeth do not have this problem; 4, maintenance of gum health: some porcelain dental 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, often seen porcelain and metal stripped, revealing the gray and black metal situation. All-porcelain teeth are inside and outside the crown is porcelain, porcelain and porcelain combination will not appear in this case.