Evaluation of dental caries, tooth crack, and age-related changes in tooth structure using optical coherence tomography
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 rea...
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| Format: | Article |
| Language: | English |
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Elsevier
2020-11-01
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| Series: | Japanese Dental Science Review |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1882761620300090 |
| _version_ | 1823926783310823424 |
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| author | Yasushi Shimada Masahiro Yoshiyama Junji Tagami Yasunori Sumi |
| author_facet | Yasushi Shimada Masahiro Yoshiyama Junji Tagami Yasunori Sumi |
| author_sort | Yasushi Shimada |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-16T20:29:25Z |
| format | Article |
| id | doaj.art-2deb9d7a5a584cbba20ff2b021c53eb9 |
| institution | Directory Open Access Journal |
| issn | 1882-7616 |
| language | English |
| last_indexed | 2024-12-16T20:29:25Z |
| publishDate | 2020-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Japanese Dental Science Review |
| spelling | doaj.art-2deb9d7a5a584cbba20ff2b021c53eb92022-12-21T22:17:29ZengElsevierJapanese Dental Science Review1882-76162020-11-01561109118Evaluation of dental caries, tooth crack, and age-related changes in tooth structure using optical coherence tomographyYasushi Shimada0Masahiro Yoshiyama1Junji Tagami2Yasunori Sumi3Department of Operative Dentistry, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Japan; Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan; Corresponding author at: Department of Operative Dentistry, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8525 Japan.Department of Operative Dentistry, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, JapanDepartment of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, JapanDepartment for Advanced Dental Research, Center of Advanced Medicine for Dental and Oral Diseases, National Center for Geriatrics and Gerontology, Obu, JapanOptical 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.http://www.sciencedirect.com/science/article/pii/S1882761620300090Optical coherence tomographyDiagnosisCariesTooth crackNCCLTooth wear |
| spellingShingle | Yasushi Shimada Masahiro Yoshiyama Junji Tagami Yasunori Sumi Evaluation of dental caries, tooth crack, and age-related changes in tooth structure using optical coherence tomography Japanese Dental Science Review Optical coherence tomography Diagnosis Caries Tooth crack NCCL Tooth wear |
| title | Evaluation of dental caries, tooth crack, and age-related changes in tooth structure using optical coherence tomography |
| title_full | Evaluation of dental caries, tooth crack, and age-related changes in tooth structure using optical coherence tomography |
| title_fullStr | Evaluation of dental caries, tooth crack, and age-related changes in tooth structure using optical coherence tomography |
| title_full_unstemmed | Evaluation of dental caries, tooth crack, and age-related changes in tooth structure using optical coherence tomography |
| title_short | Evaluation of dental caries, tooth crack, and age-related changes in tooth structure using optical coherence tomography |
| title_sort | evaluation of dental caries tooth crack and age related changes in tooth structure using optical coherence tomography |
| topic | Optical coherence tomography Diagnosis Caries Tooth crack NCCL Tooth wear |
| url | http://www.sciencedirect.com/science/article/pii/S1882761620300090 |
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