Zirconia and radioactivity: An in vitro study to establish the presence of radionuclides in dental zirconia

Dental zirconia possesses concentrations of radionuclides, but their possible radioactivity is unknown. The purpose of this in vitro study was to evaluate the radioactivity and radionuclide concentration in dental zirconia. Three specimens were obtained from commonly used dental yttria-stabilized te...

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Bibliographic Details
Published in:The Journal of prosthetic dentistry 2021-07, Vol.126 (1), p.115-118
Main Authors: Brizuela-Velasco, Aritza, Chento-Valiente, Yelko, Chávarri-Prado, David, Pérez-Pevida, Esteban, Diéguez-Pereira, Markel
Format: Article
Language:English
Subjects:
Dentistry
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Summary:Dental zirconia possesses concentrations of radionuclides, but their possible radioactivity is unknown. The purpose of this in vitro study was to evaluate the radioactivity and radionuclide concentration in dental zirconia. Three specimens were obtained from commonly used dental yttria-stabilized tetragonal zirconia polycrystal materials: Vita In-Ceram YZ, Zirkonzahn, and Zirkonzahn Prettau—producing a powder for the evaluation of radioactivity through gamma spectrometry. For the determination of radioactivity, a group of radionuclides (Ac-228, Pb-212, Tl-208, Pb-214, Bi-214, and Be-7) was evaluated. The measurements of all the specimens reported that most activity came from the decay chain of uranium, radium, and thorium, obtaining a radioactivity of 11.082 Bq/kg for Vita In-Ceram YZ, 
ISSN:0022-3913
1097-6841
DOI:10.1016/j.prosdent.2020.04.015