Uranium content in porcelain denture teeth and in porcelain powders for ceramic crowns

Authors

  • Eiko Sairenji Rudioisotope Research Laboratory, School of Dentistry, Nihon University, Tokyo, Japan; Departcmcnt of Prosthctics, Karolinska Institute, Stockholm, Sweden
  • Rune Söremark Rudioisotope Research Laboratory, School of Dentistry, Nihon University, Tokyo, Japan; Departcmcnt of Prosthctics, Karolinska Institute, Stockholm, Sweden
  • Kunik Azu Noguchi Rudioisotope Research Laboratory, School of Dentistry, Nihon University, Tokyo, Japan; Departcmcnt of Prosthctics, Karolinska Institute, Stockholm, Sweden
  • Masami Shimizu Rudioisotope Research Laboratory, School of Dentistry, Nihon University, Tokyo, Japan; Departcmcnt of Prosthctics, Karolinska Institute, Stockholm, Sweden
  • Lars-Erik Moberg Rudioisotope Research Laboratory, School of Dentistry, Nihon University, Tokyo, Japan; Departcmcnt of Prosthctics, Karolinska Institute, Stockholm, Sweden

DOI:

https://doi.org/10.3109/00016358209024078

Keywords:

Uranium, dental materials, prosthetics, radiation dose, oral mucosa, fission track method, delayed neutron technique

Abstract

Some porcelain denture teeth and porcelain powders marketed in Sweden have been analyzed for the content of uranium. The fission track method and the delayed neutron technique were the methods used.

Compared to results published previously the content of uranium was generally found to be lower in the brands analyzed. The denture teeth contained 23–186 ppm for Anatoform. 35–137 ppm for Myerson. 15—15 ppm for Candu-lor G and 20–53 ppm for Vivopearl. The baked and fired porcelain powders showed values of about 2.8 ppm at most, those in the form of powder about 25 ppm at most.

The radiation dose to the mucosa of the upper lip was calculated and is discussed.

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Published

1982-01-01

Issue

Vol. 40 No. 5 (1982): Acta Odontologica Scandinavica

Section

Articles