Determination of radioactivity levels in feldspathic dental ceramics
Citation
Kürkçüoğlu ME, Tozun F, Kürkçüoğlu I, Tuna SH, Cengiz GB, Belgin EE. Determination of radioactivity levels in feldspathic dental ceramics. Appl Radiat Isot. 2021 Oct 21;179:109989. doi: 10.1016/j.apradiso.2021.109989. Epub ahead of print. PMID: 34736110.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.
