The radioactivity levels and beta dose rate assessment from dental ceramic materials in Egypt

Mohamed Hasabelnaby; Mohamed Y. Hanfi; Hany El-Gamal; Ahmed H. El Gindy; Mayeen Uddin Khandaker; Ghada Salaheldin

Nuclear Engineering and Technology (Sep 2024)

The radioactivity levels and beta dose rate assessment from dental ceramic materials in Egypt

Mohamed Hasabelnaby,
Mohamed Y. Hanfi,
Hany El-Gamal,
Ahmed H. El Gindy,
Mayeen Uddin Khandaker,
Ghada Salaheldin

Affiliations

Mohamed Hasabelnaby: Radiology and Medical Imaging Technology Department, School of Technology of Applied Health Sciences, Badr University, 11829, Cairo, Egypt; Corresponding author. Radiology and Medical Imaging Technology Department, School of Technology of Applied Health Sciences, Badr University, 11829, Cairo, Egypt.
Mohamed Y. Hanfi: Nuclear Materials Authority. P.O. Box 530, El Maadi, Cairo, Egypt; Ural Federal University, Mira Street 19, 620002, Ekaterinburg, Russia; Corresponding author. Ural Federal Unversity, Mira street 19, 620002, Ekaterinburg, Russia.
Hany El-Gamal: Technology of Radiology and Medical Imaging Department, Faculty of Applied Health Sciences Technology, Menoufia University, 32951, Menoufia, Egypt
Ahmed H. El Gindy: Biomaterials Department, School of Dentistry, Badr University, 11829, Cairo, Egypt
Mayeen Uddin Khandaker: Applied Physics and Radiation Technologies Group, CCDCU, School of Engineering and Technology, Sunway University, Bandar Sunway, 47500, Selangor, Malaysia; Faculty of Graduate Studies, Daffodil International University, Daffodil Smart City, Birulia, Savar, Dhaka, 1216, Bangladesh
Ghada Salaheldin: Physics Department, Faculty of Science, Assiut University, 71751 Assiut, Egypt

Journal volume & issue: Vol. 56, no. 9
pp. 3898 – 3903

Abstract

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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.

Published in Nuclear Engineering and Technology

ISSN: 1738-5733 (Print)
Publisher: Elsevier
Country of publisher: Korea, Republic of
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Nuclear engineering. Atomic power
Website: http://www.journals.elsevier.com/nuclear-engineering-and-technology

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