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KMID : 0667719890260000513
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Report Natlonal Institute of Health
1989 Volume.26 No. 0 p.513 ~ p.539
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Stochastic Risk Analysis of Dental Radiology Examination
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ì°ú×£/Lee, H. Y.
êìî¤óã/çïúçñÁ/ÚÓÐñïá/ÑÑðúáÐ/äÌã°ù¾/ÑÑôÉúè/You, J. C./Oh, H. J./Park, K. J./Kim, J. S./Ahn, S. H./Kim, C. H.
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Abstract
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A nationwide survey for dental radiology facilities and measurement of entrance skin exposure dose for examination portion were carried out on the dental radiology field (general hospital, health centers, sub-health centers, private dental clinics) in the¡¤ Republic of Korea.
The objectives were the: stochastic risk analysis, adequate radiation safety control and optimization of using th61 dental X-ray radiation. The entrance skin exposure dose for examination portion in conventional oral radiography were measured with thermoluminescent dosimeter including critical organs (eye, thyroid. lung, gonad) of a patient.
The basic studies such as the present status of dental radiology facilities and measurement the entrance skin exposure dose during performing the oral radiology were estimated by ICRP (International Commission on Radiological Protection) recommendations and other research articles.
The results obtained were as follows;
1. The total number of dental institutions (general hospitals, health centers, sub-health centers, private dental clinics), installed dental deportment and installed dental X-ray equipments was 5,269, 4,555, 4,968 respectively in 1988.
2. The resultant annual number of dental radiography taken throughout the Republic of Korea in 1988 was estimated to be 5.42¡¿10^(6).
3. The frequency of dental radiological examinations was estimated to be about 126.6 per 1,000 inhabitants per year.
4. Approximately 68.5% of all dental radiography performed in the Republic of Korea were by private dental clinics.
5. The lower bicuspid examination occupies 24.4% of all intraoral radiography.
6. The entrance skin exposure dose of all intraoral radiography ranges from 0.81mGy to 1.86mGy. (when the use of E-speed dental film)
7. The use of E-speed dental film reduces approximately 52-68% in patient exposure dose than the use of D-speed dental film.
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