Detection of early caries by laser-induced breakdown spectroscopy

Shuhei Sasazawa; Satoko Kakino; Yuji Matsuura

doi:10.1117/12.2183056

15 July 2015 Detection of early caries by laser-induced breakdown spectroscopy

Shuhei Sasazawa, Satoko Kakino, Yuji Matsuura

Proceedings Volume 9537, Clinical and Biomedical Spectroscopy and Imaging IV; 95371E (2015) https://doi.org/10.1117/12.2183056
Event: European Conferences on Biomedical Optics, 2015, Munich, Germany

Abstract

To improve sensitivity of dental caries detection by laser-induced breakdown spectroscopy (LIBS) analysis, it is proposed to utilize emission peaks in the ultraviolet. We newly focused on zinc whose emission peaks exist in ultraviolet because zinc exists at high concentration in the outer layer of enamel. It was shown that by using ratios between heights of an emission peak of Zn and that of Ca, the detection sensitivity and stability are largely improved. It was also shown that early caries are differentiated from healthy part by properly setting a threshold in the detected ratios. The proposed caries detection system can be applied to dental laser systems such as ones based on Er:YAG-lasers. When ablating early caries part by laser light, the system notices the dentist that the ablation of caries part is finished. We also show the intensity of emission peaks of zinc decreased with ablation with Er:YAG laser light.

Citation Download Citation

Shuhei Sasazawa, Satoko Kakino, and Yuji Matsuura "Detection of early caries by laser-induced breakdown spectroscopy", Proc. SPIE 9537, Clinical and Biomedical Spectroscopy and Imaging IV, 95371E (15 July 2015); https://doi.org/10.1117/12.2183056

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Dental caries

Teeth

Laser induced breakdown spectroscopy

Zinc

Calcium

Er:YAG lasers

Ultraviolet radiation

Show All Keywords

Keywords/Phrases

Search In:

Publication Years