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Shimada, Yasushi Department of Operative Dentistry, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University Kaken ID researchmap
Yoshiyama, Masahiro Department of Operative Dentistry, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University Kaken ID publons researchmap
Tagami, Junji Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
Sumi, Yasunori Department for Advanced Dental Research, Center of Advanced Medicine for Dental and Oral Diseases, National Center for Geriatrics and Gerontology
Abstract
Optical coherence tomography (OCT) is an imaging technique that can visualize the internal biological structure without X-ray exposure. Swept-source OCT (SS-OCT) is one of the latest version of OCT, wherein the light source is a tunable laser that sweeps near-infrared wavelength light to achieve real-time imaging. The imaging depth of OCT is highly influenced by the translucency of the medium. The medium that does not transmit light and the deeper structure beyond the range of light penetration depth are not relevant for OCT imaging. In OCT, sound enamel is almost transparent at the OCT wavelength range, and enamel and dentin can be distinguished from each other as the dentin–enamel junction (DEJ) appears as a dark border. Demineralized enamel and dentin are imaged as bright zones because of the formation of numerous micro-porosities where the backscatter of OCT signal is increased. In cavitated caries at interproximal or occlusal hidden zone, the upper margin of the cavity reflects the signal showing a distinct bright border in the SS-OCT image. SS-OCT is capable of determining crack penetration depth even when the cracks extended beyond the DEJ. SS-OCT has a high degree of sensitivity and specificity for the detection of dental caries and tooth cracks. SS-OCT is also capable of detecting non-carious cervical lesions and occlusal tooth wear in cross-sectional views to estimate the amount of tooth structure loss.
Keywords
Optical coherence tomography
Diagnosis
Caries
Tooth crack
NCCL
Tooth wear
Age-related changes
Published Date
2020-11-30
Publication Title
Japanese Dental Science Review
Volume
volume56
Issue
issue1
Publisher
Elsevier
Start Page
109
End Page
118
ISSN
1882-7616
NCID
AA12334461
Content Type
Journal Article
language
英語
OAI-PMH Set
岡山大学
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publisher
PubMed ID
DOI
Web of Science KeyUT
Related Url
isVersionOf https://doi.org/10.1016/j.jdsr.2020.08.001
License
http://creativecommons.org/licenses/by-nc-nd/4.0/