Comparison of the two types of porcelain teeth a. Nickel-chromium porcelain has a slight toxicity, within the range of most human beings can accept, a few people can have allergies. If you really want to do nickel-chromium, it is best to check whether you are allergic to nickel or not. Suggestion: try not to do nickel-chromium porcelain teeth, although in theory the proportion of allergic people is not very large, but the latest information shows that once the nickel-chromium metal ions precipitated over, the damage to the human body is not really small, and may even be deposited in the liver and kidneys, further endangering human health. Ask the dentist himself does not do, the dentist’s relatives and friends do not do, developed countries do not do, even Japan, Korea, Taiwan do not do the nickel-chromium alloy porcelain teeth. Do you have to take the risk for it? Second, cobalt-chromium porcelain has a very small toxicity, its toxicity is far less than nickel-chromium porcelain, almost harmless to the human body. Allergic population is close to zero. Suggestions: those who are ready to do porcelain teeth, and the economy is not very generous or have done the nickel-chromium porcelain, has appeared allergic symptoms can be changed to cobalt-chromium porcelain. Simply do nothing or do plastic that is called backwards, called choking. More undesirable. A jump to the best and most expensive can not accept, that cobalt-chromium porcelain teeth is undoubtedly a better choice.