Determination of radioactivity levels in feldspathic dental ceramics

M E Kürkçüoğlu; F Tozun; I Kürkçüoğlu; S H Tuna; G Bilgici Cengiz; E E Belgin

doi:10.1016/j.apradiso.2021.109989

Determination of radioactivity levels in feldspathic dental ceramics

Appl Radiat Isot. 2022 Jan:179:109989. doi: 10.1016/j.apradiso.2021.109989. Epub 2021 Oct 21.

Authors

M E Kürkçüoğlu¹, F Tozun², I Kürkçüoğlu³, S H Tuna³, G Bilgici Cengiz⁴, E E Belgin⁵

Affiliations

¹ Süleyman Demirel University, Faculty of Arts and Sciences, Department of Physics, Isparta, Turkey. Electronic address: ertankurkcuoglu@sdu.edu.tr.
² Hınıs Anatolian High School, Department of Physics, Erzurum, Turkey.
³ Süleyman Demirel University, Faculty of Dentistry, Department of Prosthetic Dentistry, Isparta, Turkey.
⁴ Kafkas University, Faculty of Arts and Sciences, Department of Physics, Kars, Turkey.
⁵ Muğla Sıtkı Koçman University, Faculty of Science, Department of Chemistry, Muğla, Turkey.

PMID: 34736110
DOI: 10.1016/j.apradiso.2021.109989

Abstract

Activity concentrations of 42 different feldspathic dental ceramic powders were determined using a gamma spectrometer with an HPGe detector. The average ²³⁸U, ²³²Th and ²²⁶Ra activity concentrations of the specimens were 126 ± 8 Bq kg^-1, 5.6 ± 0.5 Bq kg^-1 and 12.7 ± 1.2 Bq kg^-1, respectively. The average ⁴⁰K activity was found as 2855 ± 89 Bq kg^-1 ranging from 2252 ± 70 Bq kg^-1 to 3522 ± 110 Bq kg^-1 due to high potassium content in dental ceramics. None of the activity concentration measurements exceeded the limits by EC and ISO.

Keywords: Feldspathic ceramics; Gamma spectrometry; Natural radioactivity; Prosthetic dentistry.

MeSH terms

Aluminum Silicates / chemistry*
Background Radiation*
Ceramics / chemistry*
Dental Materials / chemistry*
Potassium Compounds / chemistry*
Potassium Radioisotopes / analysis
Uranium / analysis

Substances

Aluminum Silicates
Dental Materials
Potassium Compounds
Potassium Radioisotopes
feldspar
Uranium