Radiation from human deciduous teeth formed after the Fukushima Daiichi Nuclear Power Plant accident

Takahashi, Atsushi*; Chiba, Mirei*; Suzuki, Toshihiko*; Kino, Yasushi*; Koarai, Kazuma   ; Oka, Toshitaka   ; Nakamura, Fumihiko*; Igarashi, Minoru*; Umino, Makoto*; Osaka, Ken*; Sekine, Tsutomu*; Sasaki, Keiichi*; Shinoda, Hisashi*

We have collected more than 7,000 deciduous teeth that spontaneously drop out in the process of being replaced by permanent teeth for more than 10 years after the Fukushima Daiichi Nuclear Power Plant accident from all over Japan, mainly from Fukushima Prefecture, and have investigated whether the amount of radioactive materials in dentition formed after the nuclear accident is increased compared to teeth formed before the accident, using Imaging plates have been used to investigate whether the amount of radioactive materials in the dentition formed after the nuclear accident increased compared to teeth formed before the accident. Comparison of teeth formed before and after the accident suggested that even if radionuclides were taken into the body after the accident, they did not significantly increase the amount of radionuclides in the teeth.