Share Email Print

Journal of Biomedical Optics • Open Access

Optical-fiber-based laser-induced breakdown spectroscopy for detection of early caries
Author(s): Shuhei Sasazawa; Satoko Kakino; Yuji Matsuura

Paper Abstract

A laser-induced breakdown spectroscopy (LIBS) system targeting for the <italic<in vivo</italic< analysis of tooth enamel is described. The system is planned to enable real-time analysis of teeth during laser dental treatment by utilizing a hollow optical fiber that transmits both Q-switched Nd:YAG laser light for LIBS and infrared Er:YAG laser light for tooth ablation. The sensitivity of caries detection was substantially improved by expanding the spectral region under analysis to ultraviolet (UV) light and by focusing on emission peaks of Zn in the UV region. Subsequently, early caries were distinguished from healthy teeth with accuracy rates above 80% <italic<in vitro</italic<.

Paper Details

Date Published: 3 June 2015
PDF: 5 pages
J. Biomed. Opt. 20(6) 065002 doi: 10.1117/1.JBO.20.6.065002
Published in: Journal of Biomedical Optics Volume 20, Issue 6
Show Author Affiliations
Shuhei Sasazawa, Tohoku Univ. (Japan)
Satoko Kakino, Tokyo Medical and Dental Univ. (Japan)
Yuji Matsuura, Tohoku Univ. (Japan)

© SPIE. Terms of Use
Back to Top