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Quantification of root caries using optical coherence tomography and microradiography: a correlational study.

Amaechi, B.T., Podoleanu, Adrian G.H., Komarov, G., Higham, S.M., Jackson, David A. (2004) Quantification of root caries using optical coherence tomography and microradiography: a correlational study. Oral health & preventive dentistry, 2 (4). pp. 377-382. ISSN 1602-1622. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
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Abstract

PURPOSE: The use of transverse microradiography (TMR) to quantify the amount of mineral lost during demineralization of tooth tissue has long been established. In the present study, the use of an en-face Optical Coherence Tomography (OCT) technology to detect and quantitatively monitor the mineral changes in root caries was investigated and correlated with TMR. MATERIALS AND METHODS: We used an OCT system, developed initially for retina imaging, and which can collect A-scans, B-scans (longitudinal images) and C-scans (en-face images) to quantitatively assess the development of root caries. The power to the sample was 250 microW, wavelength lambda = 850 nm and the optical source linewidth was 16 microm. RESULTS: Both the transversal and longitudinal images showed the caries lesion as volumes of reduced reflectivity. Quantitative analysis using the A-scan (reflectivity versus depth curve) showed that the tissue reflectivity decreased with increasing demineralization time. A linear correlation (r = 0.957) was observed between the mineral loss measured by TMR and the percentage reflectivity loss in demineralized tissue measured by OCT. CONCLUSION: We concluded that OCT could be used to detect incipient root caries, and that the reflectivity loss in root tissue during demineralization, measured by OCT, could be related to the amount of mineral lost during the demineralization.

Item Type: Article
Uncontrolled keywords: analysis of variance, article, comparative study, confocal microscopy, dental care, dental caries, early diagnosis, human, microradiography, molar tooth, nonparametric test, optical coherence tomography, statistical model, Analysis of Variance, Dental Caries Activity Tests, Early Diagnosis, Humans, Linear Models, Microradiography, Microscopy, Confocal, Molar, Root Caries, Statistics, Nonparametric, Tomography, Optical Coherence
Subjects: Q Science > QC Physics
R Medicine > R Medicine (General) > R857.O6 Optical coherence tomography
Divisions: Faculties > Sciences > School of Physical Sciences > Applied Optics Group
Depositing User: Giles Tarver
Date Deposited: 24 Jul 2015 16:14 UTC
Last Modified: 29 May 2019 14:55 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/49789 (The current URI for this page, for reference purposes)
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