Determining Radon Gas Concentration in Teeth Samples of Adults in Al-Najaf Governorate in Iraq

Background: Radon is a naturally occurring radioactive gas that can accumulate in the environment and pose health risks to residents. Exposure to radon gas increases the risk of lung cancer. Although extensive research has been conducted on radon levels in residential and occupational settings, little attention has been given to radon concentrations in dental materials. Objectives: This study determines the concentration of radon gas in dental samples collected from the adult population in Najaf Governorate, Iraq. Accordingly, the primary objective of this study is to measure the concentration of radon gas in dental samples collected from residents of Najaf Governorate and to assess whether these levels pose any health risks according to established guidelines. Methods: A total of 40 dental samples were collected from individuals aged between 18 to 85 years residing in different areas of Najaf Governorate, Iraq. The concentration of radon gas in the dental samples was measured using nuclear trace detectors. These detectors are sensitive to α particles emitted by radon gas, allowing for accurate measurement of radon concentrations in the samples. Results: The average concentration of radon gas in the analyzed dental samples was 74.2±9.6 Bq/kg. This value was within the normal range for radon levels in dental samples and below the reference level of 100 Bq/kg recommended by the International Commission on Radiological Protection (ICRP). Nevertheless, a significant percentage of dental samples contained detectable levels of radon gas, and some samples had concentrations that exceeded the recommended limits. Conclusion: Radon concentrations in dental samples taken from adults in Najaf Governorate, Iraq, did not raise any major radiological health concerns; however, the presence of detectable levels of radon in some samples highlights the need for further research to understand the potential health risks of radon exposure in dental materials. The findings also underscore the importance of routinely monitoring radon levels in dental settings and implementing better safety precautions to protect dental professionals and patients.