Determination of radioactivity levels in feldspathic dental ceramics


Kurkcuoglu M. E. , Tozun F., Kurkcuoglu I., Tuna S. H. , Cengiz G. B. , Belgin E. E.

APPLIED RADIATION AND ISOTOPES, vol.179, 2022 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 179
  • Publication Date: 2022
  • Doi Number: 10.1016/j.apradiso.2021.109989
  • Title of Journal : APPLIED RADIATION AND ISOTOPES
  • Keywords: Feldspathic ceramics, Natural radioactivity, Gamma spectrometry, Prosthetic dentistry, URANIUM

Abstract

Activity concentrations of 42 different feldspathic dental ceramic powders were determined using a gamma spectrometer with an HPGe detector. The average U-238, Th-232 and Ra-226 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.