Root canal therapy was performed on teeth, and braces were made. I chose nickel-chromium alloy braces. I said something harmful on the internet, and I was worried. Is it carcinogenic or not?

First of all, we should know that the main cause of cancer is long-term chronic stimulation. However, the amount of metal ions separated from a nickel-chromium porcelain crown is far from this requirement.

What is more dangerous is that the shape of porcelain crown is poor, and food retention caused by poor edge contact will stimulate soft tissue. This is not only a nickel-chromium alloy crown, but also any porcelain crown, so more consideration should be given to the shape and edge.

In this way, there are actually more carcinogens in life. For example, many metal tableware in the home are nickel-chromium, and the pollution of tail gas and medium heavy metals is far greater than the nickel-chromium content in porcelain crowns.

Of course, Ni-Cr porcelain crown is allergic to some extent, but the probability is very low. We haven't seen a case in bed for 20 years.