Dentures with the addition of uranium to the beauty

Modern dentures are usually made of acrylic plastic, but at least until the 1980s porcelain was used for the most part.    

In the 1940s, manufacturers began adding uranium to porcelain powder used to make dentures. The idea was that uranium fluorescence would help mimic the appearance of real teeth in a variety of natural and artificial lighting conditions.  Uranium had an advantage over other materials because its fluorescence was not affected by the high temperatures (800-1400 degrees Celsius) used to make porcelain. Now, it seems to me, manufacturers have stopped adding uranium to porcelain prostheses. Well, at least in 1986 there was a special decree that strictly forbade it to do at least in the States. In Europe, it was released in 1987.