Radiation risk estimation based on activity measurements of zirconium oxide implants

Journal of Biomedical Materials Research
J PorstendörferH C Willert

Abstract

Implants made form zirconium dioxide exhibit higher specific radionuclide activities of the uranium-radium and thorium series than metallic and aluminum implants. This study presents data on activity measurements performed on different samples of ZrO2 raw material (powder) and on the ceramic joint heads belonging to it to formulate a correlation between the specific radionuclide activities of the uranium-radium and thorium series in the raw material, the flux density of the alpha particle leaving the implant surface, and the annual dose of the tissue surrounding the implant. Based on this experimental study, an equation for defining the limits of the specific activities in raw material is proposed, taking into account the long-lived radionuclides (key nuclides) of the uranium-radium and thorium series weighted with their relative dose contributions from alpha emitters.

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Citations

May 5, 2020·Journal of the Mechanical Behavior of Biomedical Materials·Christian GrossAndres Stricker
Aug 7, 2012·Journal of Applied Biomaterials & Functional Materials·Andac Barkin BavbekGürcan Eskitascioglu
Jul 21, 2020·The Journal of Prosthetic Dentistry·Aritza Brizuela-VelascoMarkel Diéguez-Pereira

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