Research Papers: Imaging

First step toward translation of thermophotonic lock-in imaging to dentistry as an early caries detection technology

[+] Author Affiliations
Ashkan Ojaghi, Artur Parkhimchyk, Nima Tabatabaei

York University, Department of Mechanical Engineering, 4700 Keele Street, Toronto, Ontario M3J 1P3, Canada

J. Biomed. Opt. 21(9), 096003 (Sep 08, 2016). doi:10.1117/1.JBO.21.9.096003
History: Received June 8, 2016; Accepted August 23, 2016
Text Size: A A A

Abstract.  Early detection of the most prevalent oral disease worldwide, i.e., dental caries, still remains as one of the major challenges in dentistry. The current dental standard of care relies on caries detection methods, such as visual inspection and x-ray radiography, which lack the sufficient specificity and sensitivity to detect caries at early stages of formation when they can be healed. We report on the feasibility of early caries detection in a clinically and commercially viable thermophotonic imaging system. The system incorporates intensity-modulated laser light along with a low-cost long-wavelength infrared (LWIR; 8 to 14  μm) camera, providing diagnostic contrast based on the enhanced light absorption of early caries. The LWIR camera is highly suitable for integration into clinical platforms because of its low weight and cost. In addition, through theoretical modeling, we show that LWIR detection enhances the diagnostic contrast due to the minimal LWIR transmittance of enamel and suppression of the masking effect of the direct thermal Planck emission. Diagnostic performance of the system and its detection threshold are experimentally evaluated by monitoring the inception and progression of artificially induced occlusal and smooth surface caries. The results are suggestive of the suitability of the developed LWIR system for detecting early dental caries.

Figures in this Article
© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Ashkan Ojaghi ; Artur Parkhimchyk and Nima Tabatabaei
"First step toward translation of thermophotonic lock-in imaging to dentistry as an early caries detection technology", J. Biomed. Opt. 21(9), 096003 (Sep 08, 2016). ; http://dx.doi.org/10.1117/1.JBO.21.9.096003


Tables

Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.