Ex vivo imaging of early dental caries within the interproximal space

Lin-P'ing Choo-Smith; Mark D. Hewko; Marc L. Dufour; Crystal Fulton; Pingli Qiu; Bruno Gauthier; Christian Padioleau; Charles-Etienne Bisaillon; Cecilia Dong; Blaine M. Cleghorn; Guy Lamouche; Michael G. Sowa

doi:10.1117/12.809553

18 February 2009 Ex vivo imaging of early dental caries within the interproximal space

Lin-P'ing Choo-Smith, Mark D. Hewko, Marc L. Dufour, Crystal Fulton, Pingli Qiu, Bruno Gauthier, Christian Padioleau, Charles-Etienne Bisaillon, Cecilia Dong, Blaine M. Cleghorn, Guy Lamouche, Michael G. Sowa

Author Affiliations +

Proceedings Volume 7162, Lasers in Dentistry XV; 716206 (2009) https://doi.org/10.1117/12.809553
Event: SPIE BiOS, 2009, San Jose, California, United States

Abstract

Optical coherence tomography (OCT) is emerging as a technology that can potentially be used for the detection and monitoring of early dental enamel caries since it can provide high-resolution depth imaging of early lesions. To date, most caries detection optical technologies are well suited for examining caries at facial, lingual, incisal and occlusal surfaces. The approximal surfaces between adjacent teeth are difficult to examine due to lack of visual access and limited space for these new caries detection tools. Using a catheter-style probe developed at the NRC-Industrial Materials Institute, the probe was inserted into the interproximal space to examine the approximal surfaces with OCT imaging at 1310 nm. The probe was rotated continuously and translated axially to generate depth images in a spiral fashion. The probe was used in a mock tooth arch model consisting of extracted human teeth mounted with dental rope wax in their anatomically correct positions. With this ex vivo model, the probe provided images of the approximal surfaces revealing morphological structural details, regions of calculus, and especially regions of early dental caries (white spot lesions). Results were compared with those obtained from OCT imaging of individual samples where the approximal surfaces of extracted teeth are accessible on a lab-bench. Issues regarding access, regions of interest, and factors to be considered in an in vivo setting will be discussed. Future studies are aimed at using the probe in vivo with patient volunteers.

Citation Download Citation

Lin-P'ing Choo-Smith, Mark D. Hewko, Marc L. Dufour, Crystal Fulton, Pingli Qiu, Bruno Gauthier, Christian Padioleau, Charles-Etienne Bisaillon, Cecilia Dong, Blaine M. Cleghorn, Guy Lamouche, and Michael G. Sowa "Ex vivo imaging of early dental caries within the interproximal space", Proc. SPIE 7162, Lasers in Dentistry XV, 716206 (18 February 2009); https://doi.org/10.1117/12.809553

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available