Share Email Print
cover

Proceedings Paper

Versatile optical coherence tomography system applied to the imaging of teeth
Author(s): Bennett T. Amaechi; Adrian Gh. Podoleanu; John A. Rogers; Susan M. Higham; Shane Dunne; David A. Jackson
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper 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(mu) W, wavelength (lambda) =850 nm and the depth resolution in air was 16 micrometers . 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 performed 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 demineralization.

Paper Details

Date Published: 14 June 2002
PDF: 7 pages
Proc. SPIE 4619, Coherence Domain Optical Methods in Biomedical Science and Clinical Applications VI, (14 June 2002); doi: 10.1117/12.470481
Show Author Affiliations
Bennett T. Amaechi, Univ. of Texas Health Science Ctr. (United States)
Adrian Gh. Podoleanu, Univ. of Kent at Canterbury (United Kingdom)
John A. Rogers, Univ. of Kent at Canterbury (United Kingdom)
Susan M. Higham, Univ. of Liverpool (United Kingdom)
Shane Dunne, Ophthalmic Technologies, Inc. (Canada)
David A. Jackson, Univ. of Kent at Canterbury (United Kingdom)


Published in SPIE Proceedings Vol. 4619:
Coherence Domain Optical Methods in Biomedical Science and Clinical Applications VI
Valery V. Tuchin; Joseph A. Izatt; James G. Fujimoto, Editor(s)

© SPIE. Terms of Use
Back to Top