Next Article in Journal
R-DEHM: CSI-Based Robust Duration Estimation of Human Motion with WiFi
Previous Article in Journal
Three-Stage Single-Chambered Microbial Fuel Cell Biosensor Inoculated with Exiguobacterium aestuarii YC211 for Continuous Chromium (VI) Measurement
Previous Article in Special Issue
Microcomputed Tomography Evaluation of Root Dentin Caries Prevention by Topical Fluorides and Potassium Iodide
Open AccessArticle

Near-Infrared Imaging of Artificial Enamel Caries Lesions with a Scanning Fiber Endoscope

1
Department of Orthodontics, School of Dentistry, University of Washington, 1959 NE Pacific St, Seattle, WA 98195, USA
2
Human Photonics Lab, Department of Mechanical Engineering, University of Washington, 4000 Mason St, Seattle, WA 98195, USA
3
Department of Electrical and Computer Engineering, University of Washington, 185 E Stevens Way NE, Seattle, WA 98195, USA
4
Biomimetics Biomaterials Biophotonics & Technology (B4T) Lab, Department of Restorative Dentistry, School of Dentistry, University of Washington, 1959 NE Pacific St, Seattle, WA 98195, USA
*
Author to whom correspondence should be addressed.
Sensors 2019, 19(6), 1419; https://doi.org/10.3390/s19061419
Received: 20 February 2019 / Revised: 12 March 2019 / Accepted: 20 March 2019 / Published: 22 March 2019
(This article belongs to the Special Issue Sensors in Dentistry)
Several studies have shown that near-infrared imaging has great potential for the detection of dental caries lesions. A miniature scanning fiber endoscope (SFE) operating at near-infrared (NIR) wavelengths was developed and used in this study to test whether the device could be used to discriminate demineralized enamel from sound enamel. Varying depths of artificial enamel caries lesions were prepared on 20 bovine blocks with smooth enamel surfaces. Samples were imaged with a SFE operating in the reflectance mode at 1310-nm and 1460-nm in both wet and dry conditions. The measurements acquired by the SFE operating at 1460-nm show significant difference between the sound and the demineralized enamel. There was a moderate positive correlation between the SFE measurements and micro-CT measurements, and the NIR SFE was able to detect the presence of demineralization with high sensitivity (0.96) and specificity (0.85). This study demonstrates that the NIR SFE can be used to detect early demineralization from sound enamel. In addition, the NIR SFE can differentiate varying severities of demineralization. With its very small form factor and maneuverability, the NIR SFE should allow clinicians to easily image teeth from multiple viewing angles in real-time. View Full-Text
Keywords: near-infrared imaging; reflectance imaging; micro computed tomography; dental caries detection; demineralization; quantitative enamel imaging near-infrared imaging; reflectance imaging; micro computed tomography; dental caries detection; demineralization; quantitative enamel imaging
Show Figures

Figure 1

MDPI and ACS Style

Lee, R.C.; Zhou, Y.; Finkleman, S.; Sadr, A.; Seibel, E.J. Near-Infrared Imaging of Artificial Enamel Caries Lesions with a Scanning Fiber Endoscope. Sensors 2019, 19, 1419.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop