Determination of radioactivity levels in feldspathic dental ceramics

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

APPLIED RADIATION AND ISOTOPES, vol.179, 2022 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 179
  • Publication Date: 2022
  • Doi Number: 10.1016/j.apradiso.2021.109989
  • Journal Name: APPLIED RADIATION AND ISOTOPES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aquatic Science & Fisheries Abstracts (ASFA), Chemical Abstracts Core, Chimica, Compendex, EMBASE, Food Science & Technology Abstracts, INSPEC, MEDLINE, Pollution Abstracts
  • Keywords: Feldspathic ceramics, Natural radioactivity, Gamma spectrometry, Prosthetic dentistry
  • Dokuz Eylül University Affiliated: No

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.