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Proceedings Paper

Assessment of dental-caries using optical coherence tomography
Author(s): Jihoon Na; Jae Ho Baek; Eun Seo Choi; Seon Young Ryu; Ju-wan Chang; Chang Su Lee; Byeong Ha Lee
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Paper Abstract

We employed OCT imaging technique to study the human teeth infected with the caries lesion in fit and fissure. A time domain OCT system using a rapid-scanning optical delay line enabled high speed imaging of extracted teeth. The OCT images presented the morphological feature and caries-involved area of the dental structure with a high resolution of ~14 μm. The OCT images could be utilized to diagnose the disease, while a signal along the axial direction could provide quantitative analysis of the disease based on the reflectivity differences in the specimen. We investigated the influence of caries in human teeth with several imaging tools such as light illuminating exam, digital intra-oral radiography and electron probe micro analyzer, which provided the distributions of chemical compositions, mainly calcium and phosphate in hard tissues. The biochemical changes acquired from EPMA and the morphological features acquired from OCT in the early stage of caries were compared and analyzed to present more objectively practical index for translating the degree of caries.

Paper Details

Date Published: 15 February 2006
PDF: 10 pages
Proc. SPIE 6137, Lasers in Dentistry XII, 613703 (15 February 2006); doi: 10.1117/12.645747
Show Author Affiliations
Jihoon Na, Gwangju Institute of Science and Technology (South Korea)
Jae Ho Baek, Ulsan Univ. Hospital (South Korea)
Eun Seo Choi, Gwangju Institute of Science and Technology (South Korea)
Seon Young Ryu, Gwangju Institute of Science and Technology (South Korea)
Ju-wan Chang, The Univ. of Suwon (South Korea)
Chang Su Lee, The Univ. of Suwon (South Korea)
Byeong Ha Lee, Gwangju Institute of Science and Technology (South Korea)


Published in SPIE Proceedings Vol. 6137:
Lasers in Dentistry XII
Peter Rechmann; Daniel Fried, Editor(s)

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