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Korean J Oral Maxillofac Radiol. 2009 Jun;39(2):61-68. Korean. Original Article.
Park DH , Park YH , Kim KS , Park JH , Lee GJ , Choi SJ , Choi YS , Hwang EH , Park HK .
Department of Biomedical Engineering, School of Medicine, KyungHee University, Healthcare Industry Research Institute, KyungHee University, Korea.
Department of Oral and Maxillofacial Radiology, Institute of Oral Biology, School of Dentistry, KyungHee University, Korea.

PURPOSE : The purpose of this study was to develop the radiographic technique for detecting the demineralization which is known as indication of dental caries MATERIALS AND METHODS : This technique was based on the comparing of multiple radiographs which was irradiated by multiple X-ray spectra. For the meaningful comparing, the multiple radiographs were reconstructed to the dosimetrically consistent images using a standard material. The difference of resulting images of same target with multiple spectra represents the difference of response of material as regards the spectra. RESULTS : We have found about 10% of demineralization of dental hard tissues particularly in the proximal region through the analyzing of differences. CONCLUSION : Most intriguing thing in this investigation was that the method to analyze difference shows us to an anatomic structure of dental hard tissues even if absolute values of optical density were excluded during the procedures.

Copyright © 2019. Korean Association of Medical Journal Editors.