Recently, a “nickel-chromium porcelain teeth can cause kidney disease” post circulated in major websites and attracted numerous follow-up posts, the poster said he had installed two nickel-chromium porcelain teeth, coughing for six months, allergic purpura, hives, laryngitis and other symptoms that did not exist before, and urine test heavy metals seriously exceeded the standard, was preliminarily diagnosed with occult nephritis, and provided a large number of papers on the existence of a causal relationship between nickel-chromium porcelain teeth and kidney disease. The post caused widespread public concern, different expert views and media interpretation, a time to countless people equipped with nickel-chromium porcelain teeth doubts …… nickel-chromium porcelain teeth can cause kidney disease? According to the Chinese Dental Association experts, “preliminary statistics show that since the late 1970s, China’s introduction of nickel-chromium porcelain teeth, 8 units (West China Dental Hospital of Sichuan University, the Fourth Military Medical University Dental Hospital and other 8) refers to a total of about 900,000 units of nickel-chromium alloy porcelain crowns, which may cause allergic reactions only 5 cases, in addition to not see cases leading to kidney disease appeared.” Experts pointed out that the medical does not exclude that nickel-chromium alloy has a certain allergenicity, but wearing nickel-chromium porcelain teeth allergic reactions are rare, and nickel-chromium porcelain teeth and kidney damage is not yet confirmed by evidence of causality. In this regard, Shanghai Bayer dental experts suggest that patients who are worried about their kidney disease due to the installation of nickel-chromium porcelain teeth can go to a medical institution for a comprehensive and detailed examination, and ask experts in nephrology, toxicology, stomatology, nutrition, occupational diseases and other aspects of consultation, so as to draw scientific conclusions about their condition. Has been installed nickel-chromium porcelain dental patients have the need to remove all? This is currently the most concerned about the topic of many people. In this regard, Shanghai Bayer dental experts pointed out that for most patients using nickel-chromium porcelain teeth, nickel-chromium alloy has a good biological safety, only a very small number of patients will have some side effects, the main reason for side effects is the release of nickel ions from nickel-chromium alloy. Bayer dental experts, finally reminded the public, first of all, to the regular medical institutions to receive porcelain dental treatment such as dental beauty; secondly, you can consider replacing the nickel-cadmium porcelain crowns, replaced by cobalt-chromium porcelain crowns or precious metal porcelain crowns, all-porcelain crowns, which are safer and more beautiful. If the porcelain crowns done in small clinics, patients can ask the clinic to provide details of the processing and warranty card to prove the type of metal used.