Radioactivity and radionuclides in deciduous teeth formed before the Fukushima-Daiichi Nuclear Power Plant accident
Abstract The Fukushima-Daiichi Nuclear Power Plant (FNPP) accident in March of 2011 released substantial amounts of radionuclides into the environment. We collected 4,957 deciduous teeth formed in children before the Fukushima accident to obtain precise control data for teeth formed after the accide...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2021-05-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-89910-0 |
| _version_ | 1819126286949285888 |
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| author | Atsushi Takahashi Mirei Chiba Akira Tanahara Jun Aida Yoshinaka Shimizu Toshihiko Suzuki Shinobu Murakami Kazuma Koarai Takumi Ono Toshitaka Oka Joji Ikeyama Osamu Kaneko Makoto Unno Kimiharu Hirose Takashi Ohno Yasushi Kino Tsutomu Sekine Ken Osaka Keiichi Sasaki Hisashi Shinoda |
| author_facet | Atsushi Takahashi Mirei Chiba Akira Tanahara Jun Aida Yoshinaka Shimizu Toshihiko Suzuki Shinobu Murakami Kazuma Koarai Takumi Ono Toshitaka Oka Joji Ikeyama Osamu Kaneko Makoto Unno Kimiharu Hirose Takashi Ohno Yasushi Kino Tsutomu Sekine Ken Osaka Keiichi Sasaki Hisashi Shinoda |
| author_sort | Atsushi Takahashi |
| collection | DOAJ |
| description | Abstract The Fukushima-Daiichi Nuclear Power Plant (FNPP) accident in March of 2011 released substantial amounts of radionuclides into the environment. We collected 4,957 deciduous teeth formed in children before the Fukushima accident to obtain precise control data for teeth formed after the accident. Radioactivity was measured using imaging plates (IP) and epidemiologically assessed using multivariate regression analysis. Additionally, we measured 90Sr, 137Cs, and natural radionuclides which might be present in teeth. Epidemiological studies of IP showed that the amount of radioactivity in teeth from Fukushima prefecture was similar to that from reference prefectures. We found that artificial radionuclides of 90Sr and 137Cs, which were believed to have originated from past nuclear disasters, and natural radionuclides including 40 K and daughter nuclides in the 238U and 232Th series contributed to the generation of radioactivity in teeth. We also found no evidence to suggest that radionuclides originating from the FNPP accident significantly contaminated pre-existing teeth. This is the first large-scale investigation of radioactivity and radionuclides in teeth. The present findings will be indispensable for future studies of teeth formed after the FNPP accident, which will fall out over the next several years and might be more contaminated with radionuclides. |
| first_indexed | 2024-12-22T07:53:38Z |
| format | Article |
| id | doaj.art-a4cfdf576add4291b9fac7f8b0e2ea34 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-22T07:53:38Z |
| publishDate | 2021-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-a4cfdf576add4291b9fac7f8b0e2ea342022-12-21T18:33:25ZengNature PortfolioScientific Reports2045-23222021-05-0111111110.1038/s41598-021-89910-0Radioactivity and radionuclides in deciduous teeth formed before the Fukushima-Daiichi Nuclear Power Plant accidentAtsushi Takahashi0Mirei Chiba1Akira Tanahara2Jun Aida3Yoshinaka Shimizu4Toshihiko Suzuki5Shinobu Murakami6Kazuma Koarai7Takumi Ono8Toshitaka Oka9Joji Ikeyama10Osamu Kaneko11Makoto Unno12Kimiharu Hirose13Takashi Ohno14Yasushi Kino15Tsutomu Sekine16Ken Osaka17Keiichi Sasaki18Hisashi Shinoda19Tohoku University Hospital, Tohoku UniversityGraduate School of Dentistry, Tohoku UniversityFaculty of Science, University of the RyukyusGraduate School of Medical and Dental Sciences, Tokyo Medical and Dental UniversityGraduate School of Dentistry, Tohoku UniversityGraduate School of Dentistry, Tohoku UniversityGraduate School of Dentistry, Tohoku UniversityCollaborative Laboratories for Advanced Decommissioning Science, Japan Atomic Energy AgencyDepartment of Chemistry, Tohoku UniversitySector of Nuclear Science Research, Japan Atomic Energy AgencyThe Fukushima Prefecture Dental AssociationThe Fukushima Prefecture Dental AssociationThe Fukushima Prefecture Dental AssociationFaculty of Dentistry, Ohu UniversityFaculty of Dentistry, Ohu UniversityDepartment of Chemistry, Tohoku UniversityInstitute for Excellence in Higher Education, Tohoku UniversityGraduate School of Dentistry, Tohoku UniversityGraduate School of Dentistry, Tohoku UniversityGraduate School of Dentistry, Tohoku UniversityAbstract The Fukushima-Daiichi Nuclear Power Plant (FNPP) accident in March of 2011 released substantial amounts of radionuclides into the environment. We collected 4,957 deciduous teeth formed in children before the Fukushima accident to obtain precise control data for teeth formed after the accident. Radioactivity was measured using imaging plates (IP) and epidemiologically assessed using multivariate regression analysis. Additionally, we measured 90Sr, 137Cs, and natural radionuclides which might be present in teeth. Epidemiological studies of IP showed that the amount of radioactivity in teeth from Fukushima prefecture was similar to that from reference prefectures. We found that artificial radionuclides of 90Sr and 137Cs, which were believed to have originated from past nuclear disasters, and natural radionuclides including 40 K and daughter nuclides in the 238U and 232Th series contributed to the generation of radioactivity in teeth. We also found no evidence to suggest that radionuclides originating from the FNPP accident significantly contaminated pre-existing teeth. This is the first large-scale investigation of radioactivity and radionuclides in teeth. The present findings will be indispensable for future studies of teeth formed after the FNPP accident, which will fall out over the next several years and might be more contaminated with radionuclides.https://doi.org/10.1038/s41598-021-89910-0 |
| spellingShingle | Atsushi Takahashi Mirei Chiba Akira Tanahara Jun Aida Yoshinaka Shimizu Toshihiko Suzuki Shinobu Murakami Kazuma Koarai Takumi Ono Toshitaka Oka Joji Ikeyama Osamu Kaneko Makoto Unno Kimiharu Hirose Takashi Ohno Yasushi Kino Tsutomu Sekine Ken Osaka Keiichi Sasaki Hisashi Shinoda Radioactivity and radionuclides in deciduous teeth formed before the Fukushima-Daiichi Nuclear Power Plant accident Scientific Reports |
| title | Radioactivity and radionuclides in deciduous teeth formed before the Fukushima-Daiichi Nuclear Power Plant accident |
| title_full | Radioactivity and radionuclides in deciduous teeth formed before the Fukushima-Daiichi Nuclear Power Plant accident |
| title_fullStr | Radioactivity and radionuclides in deciduous teeth formed before the Fukushima-Daiichi Nuclear Power Plant accident |
| title_full_unstemmed | Radioactivity and radionuclides in deciduous teeth formed before the Fukushima-Daiichi Nuclear Power Plant accident |
| title_short | Radioactivity and radionuclides in deciduous teeth formed before the Fukushima-Daiichi Nuclear Power Plant accident |
| title_sort | radioactivity and radionuclides in deciduous teeth formed before the fukushima daiichi nuclear power plant accident |
| url | https://doi.org/10.1038/s41598-021-89910-0 |
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