Nuclear Engineering and Technology

  • 제56권9호
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  • Pages.3898-3903
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  • 2024
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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The radioactivity levels and beta dose rate assessment from dental ceramic materials in Egypt

  • Mohamed Hasabelnaby (Radiology and Medical Imaging Technology Department, School of Technology of Applied Health Sciences, Badr University) ;
  • Mohamed Y. Hanfi (Nuclear Materials Authority) ;
  • Hany El-Gamal (Technology of Radiology and Medical Imaging Department, Faculty of Applied Health Sciences Technology, Menoufia University) ;
  • Ahmed H. El Gindy (Biomaterials Department, School of Dentistry, Badr University) ;
  • Mayeen Uddin Khandakerf (Applied Physics and Radiation Technologies Group, CCDCU, School of Engineering and Technology, Sunway University) ;
  • Ghada Salaheldin (Physics Department, Faculty of Science, Assiut University)
  • 투고 : 2024.03.05
  • 심사 : 2024.04.24
  • 발행 : 2024.09.25
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초록

There is a lack of available data on the radioactivity levels of these materials, despite the potential risks they may pose to patients, dental technicians, and dentists. A total of forty samples were collected from different dental markets in Egypt. Using an NaI(Tl) detector, the gamma-ray spectrometer measured the activity levels of uranium-238, radium-226, thorium-232, and potassium-40. The findings revealed that the mean concentration of 238U (below the minimum detectable activity, MDA), 226Ra (135 ± 5 and 132 ± 5 Bq/kg), 232Th (187 ± 4 and 243 ± 8 Bq/kg), and 40K (1560 ± 52 and 2501 ± 89 Bq/kg) in feldspar and zirconia (ZrO2) dental ceramic samples, respectively, were all within the limits established by the International Organization for Standardization (ISO) and the European Commission (EC). The use of feldspar and zirconia dental ceramics to restore all teeth would result in an estimated maximum beta dose of 1.5 mGy/year to the oral tissue. The results suggest that there is no cause for concern regarding any additional beta dose to the oral cavity from the use of feldspar and zirconia dental ceramics.

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