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Versatile optical coherence tomography system applied for imaging of teeth

Amaechi, Bennett T., Podoleanu, Adrian G.H., Rogers, John A., Higham, Susan M., Dunne, Shane, Jackson, David A. (2002) Versatile optical coherence tomography system applied for imaging of teeth. In: SPIE Proceedings Series. 4619. pp. 180-186. Spie-Int Soc Optical Engineering (doi:10.1117/12.470481) (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)
Official URL
http://www.dx.doi.org/10.1117/12.470481

Abstract

The utility of a versatile multifunctional standalone Optical Coherence Tomography (OCT)/confocal system for imaging dental tissue was investigated. The system can collect A-scan (reflectivity versus depth graph), longitudinal (B-scan) and en-face (C-scan) OCT images, simultaneously with a confocal image. The power to the sample was 250 μW, wavelength λ= 850 nm and the depth resolution in air was 16 μm. The OCT images showed caries lesions as volumes of reduced reflectivity. Transversal images (C-scan) showed the en-face slices of the tooth tissue like in confocal microscopy. Longitudinal images showed the depth of the lesion into the tooth tissue as well as the different structural layers of sound tooth in the same way as seen in ultrasound images. A-scans preformed in locations selected in the en-face images provided quantitative data about the reflectivity versus depth. The confocal channel was extremely useful for guidance and it has also shown the integral of the intensity over depth at transversal locations. We concluded that OCT proved capable to detect an early caries lesion, to show the depth of the lesion into the tissue, and quantitatively assess the degree of demineralisation.

Item Type: Conference or workshop item (Proceeding)
DOI/Identification number: 10.1117/12.470481
Uncontrolled keywords: Caries diagnosis, Confocal imaging, Demineralisation, Dental caries, Dental imaging, Enamel, Low coherence interferometry, Optical coherence tomography, Optical methods, Coherent light, Dentistry, Interferometry, Light reflection, Medical imaging, Microscopic examination, Tissue, Optical coherence tomography (OCT), Tomography
Subjects: Q Science > QC Physics
R Medicine > R Medicine (General) > R857.O6 Optical coherence tomography
R Medicine > RK Dentistry
Divisions: Faculties > Sciences > School of Physical Sciences > Applied Optics Group
Depositing User: Giles Tarver
Date Deposited: 27 Jul 2015 09:23 UTC
Last Modified: 29 May 2019 14:55 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/49799 (The current URI for this page, for reference purposes)
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