KMID : 0896020090390040195
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Korean Journal of Oral and Maxillofacial Radiology 2009 Volume.39 No. 4 p.195 ~ p.198
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Reference dose levels for dental periapical radiography in Chonnam Province
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Han Mi-Ra
Kang Byung-Cheol Lee Jae-Seo Yoon Suk-Ja Kim Young-Hee
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Abstract
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Purpose : To establish reference doses of periapical radiography in Chonnam Province, Korea.
Materials and Methods : The target-skin distances were measured for dental patient¡¯s 1235 exposures including 345 mandibular molar areas. Each periapical radiation exposure was simulated with exactly the same patients exposure parameters and the simulated radiation doses were measured utilizing Mult-O-Meter (Unfors Instruments, Billadal, Sweden). The measurements were done in 44 dental clinics with 49 dental x-ray sets in Chonnam Province for one or two weeks at each dental clinic during year 2006.
Results : The third quartile patient surface doses were 2.8 mGy for overall periapical exposures and 3.2 mGy for periapical mandibular molar exposures.
Conclusion : The third quartile patient surface doses in Chonnam Province can be used as a guide to accepted clinical practice to reduce patient radiation exposure for the surveyed reference doses were below the recommended dental periapical radiography dose of 7 mGy by IAEA.
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KEYWORD
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Radiation, Gray, Dental radiography
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