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Assessment of dental caries with optical coherence tomography: Effect of ambient factors

Amaechi, Bennett T., Podoleanu, Adrian G.H., Higham, Susan M., Jackson, David A. (2002) Assessment of dental caries with optical coherence tomography: Effect of ambient factors. In: SPIE Proceedings Series. 4610. pp. 196-200. Spie-Int Soc Optical Engineering (doi:10.1117/12.469326) (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/10.1117/12.469326

Abstract

Optical Coherence Tomography (OCT) has been used to produce longitudinal images of dental tissues. We investigated the influence on OCT system, of factors that could limit detection and quantitative monitoring of incipient caries. The effect of such factors as saliva, dental plaque, lesion staining, ambient lighting, and Dacron gauze (used to encourage plaque growth in in situ caries studies) on OCT imaging and analysis were determined during demineralisation to produce early caries. The system can collect A-scans, B-scans (longitudinal images) and C-scans (en-face images). Caries lesions were shown as volumes of reduced reflectivity. A-scan, which showed the levels of reflectivity versus the depth of penetration into the tooth tissue, was used for the quantitative analysis of the reflectivity loss. The reflectivity of the tooth tissue decreased with demineralisation. The percentage change in reflectivity of the tissue was quantified as a measure of the change in mineral status of the tissue following demineralisation. Neither the presence of saliva, plaque, Dacron gauze, plaque/Dacron gauze, nor lesion staining nor the level of ambient lighting significantly affected OCT detection and analysis of an incipient caries.

Item Type: Conference or workshop item (Proceeding)
DOI/Identification number: 10.1117/12.469326
Uncontrolled keywords: Ambient lighting, Caries diagnosis, Confocal imaging, Dacron gauze, Demineralisation, Dental imaging, Dental plaque, Lesion staining, Optical coherence tomography, Saliva, Dentistry, Diagnosis, Medical imaging, Tissue, Ambinet lighting, Dacron gauze, Dental caries, Dental imaging, Dental plaque, Lesion staining, Optical coherence tomography, Saliva, 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 09:28 UTC
Last Modified: 29 May 2019 14:55 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/49803 (The current URI for this page, for reference purposes)
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