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KMID : 1023420160160040257
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Journal of Dental Hygiene Science
2016 Volume.16 No. 4 p.257 ~ p.262
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Assessment of Early Dental Caries by Using Optical Coherence Tomography
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Min Ji-Hyun
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Abstract
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The purpose of this study was to assess the correlation between integrated mineral loss (volume % mineral×?m, ΔZTMR) determined usingtransverse microradiography (TMR) and integrated reflectivity (dB×?m, ΔROCT) determined using optical coherence tomography (OCT) fordetecting early dental caries with lesion depth more than 200 ?m. Sixty tooth specimens were made from sound bovine teeth. They were immersedin a demineralized solution for 20, 30, and 40 days. The ΔROCT was obtained from the cross-sectional OCT image. The ΔZTMR was obtained fromthe TMR image. The correlation between ΔROCT and ΔZTMR was examined using Pearson correlation. The Bland-Altman plot was constructedusing the ΔROCT and ΔZTMR values. A significant correlation between ΔROCT and ΔZTMR was confirmed (r=0.491, p=0.003). Moreover, most ofthe difference between ΔROCT and ΔZTMR was included in the error section of the Bland-Altman plot. Therefore, OCT could be used as a substitutefor TMR when analyzing mineral loss in early dental caries.
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KEYWORD
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Early dental caries, Optical coherence tomography, Transverse microradiography
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