Measurement of gross alpha and gross beta activity concentrations in human tooth

Söğüt, Ömer; Aydın, Mehmet Fatih; Zorer, Özlem Selçuk; Doğru, Mahmut

doi:10.1016/j.jenvrad.2009.11.003

Cited by 8 publications

(3 citation statements)

References 12 publications

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“…In another study, gross alpha activity concentrations were found and compared to changes in calcium in the human teeth. Based on the results, the gross alpha activity concentrations had different amounts for (38) .…”

Section: Discussionmentioning

confidence: 98%

“…Relatively similar to the results obtained in the present investigation, Taskin et al reported that in the female donors' in the 19-to 30-yearold age category, the average levels of gross alpha radioactivity were lower than those of the other age categories (30) . This can be explained by the fertility age of females (38,39) and their physiological and hormonal conditions (30) during this period because the amount of calcium, which has a direct relationship with alpha particles, significantly declines in women during their fertility period (39)(40). Furthermore, in the study by Omer et al, the amount of Ca had an increase in the 19-to 25-year-old males, while there was a decline in females of the same age group.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, in the study by Omer et al, the amount of Ca had an increase in the 19-to 25-year-old males, while there was a decline in females of the same age group. In addition, there was an increase in female donors aged over 19-25 years old (38).…”

Section: Discussionmentioning

confidence: 99%

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Measuring track density of alpha particles emitted from human teeth and assess of the resulting cancer risk

2021

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Background: Since the radionuclides concentration in teeth is a good indicator of the human body's radioactive contamination, the purpose of this study was to measure the track density of alpha particles emitted from the human teeth and to assess the resulting cancer risk. Material and Methods: In this cross-section study, 93 permanent and unfilled tooth samples were collected from the patients residing in Khorramabad, Iran, and visiting dental clinics in this city. The alpha track density for the tooth samples was measured using CR-39 nuclear track detector. Annual effective dose (AED) and excess lifetime cancer risk (ELCR) were estimated based on the recommendations made by ICRP and UNSCEAR. Results: The mean alpha track density from 222 Rn in patients' teeth was410.15 tracks cm -2 , whereas the mean for women and men equaled 441.42 and 378.20, respectively. This difference was not statistically significant (P=0.22), but there was a statistically significant difference between the track densities in different age groups (P˂0.001).In this study, the average radon activity concentration was 40.62 Bq m -3 . Also, the mean annual effective dose and the mean ELCR were calculated as 1.02 mSvy -1 and 3.59 ×10 -3 , respectively. Conclusion: The AED value was higher than the permissible dose limit and also the mean ELCR was higher than the global average. Based on the results, it is necessary to perform periodical monitoring to detect pollution sources.

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Section: Discussionmentioning

confidence: 98%