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Proceedings Paper

Root canal surface after application of an x-ray opaque waveguide
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Paper Abstract

The success of endodontic treatment depends on the methods used for shaping, cleaning, disinfecting, and sealing of a root canal. In the last few decades, big progress has been achieved in the application of the following methods: manual instrumentation, sonic and ultrasonic devices, and rotary instruments. The procedures used in the root canal system preparation result in a smear layer creation. The aim of this study was to give more precision to the smear layer removal using laser radiation. The root canal systems of 20 human teeth were treated endodontically. As laser radiation sources, Er:YAG laser system generating a wavelength of 2940 nm (rep. rate 1.5 Hz, spot size diameter 320 um, number of pulses 55, energy 100 mJ) and Alexandrite laser system generating a wavelength of 375 nm (rep. rate 1 Hz, spot size diameter 320 um, number of pulses 200, energy 1 mJ) were used. As a delivery system, a hollow glass waveguide with the special X-ray contrast cover was used. The flexible waveguide was moved via root canal and the laser radiation cleaned the wall surface. After application of Er:YAG laser radiation, the smear layer was fully removed, the surface was clean and smooth, and in the SEM investigation the open dentinal tubules were visible. No cracks were determined. The surface modifications were also not observed after endodontic preparation as well as Alexandrite laser radiation therapy. The whole treatment can be checked by X-ray machine.

Paper Details

Date Published: 28 May 2004
PDF: 6 pages
Proc. SPIE 5313, Lasers in Dentistry X, (28 May 2004); doi: 10.1117/12.528851
Show Author Affiliations
Tatjana Dostalova, Charles Univ. (Czech Republic)
Helena Jelinkova, Czech Technical Univ. (Czech Republic)
Marie Bartonova, Charles Univ. (Czech Republic)
Jan Sulc, Czech Technical Univ. (Czech Republic)
Michal Nemec, Czech Technical Univ. (Czech Republic)
Petr Koranda, Czech Technical Univ. (Czech Republic)
Mitsunobu Miyagi, Tohoku Univ. (Japan)
Yi-Wei Shi, Tohoku Univ. (Japan)
Yuji Matsuura, Tohoku Univ. (Japan)

Published in SPIE Proceedings Vol. 5313:
Lasers in Dentistry X
Peter Rechmann D.D.S.; Daniel Fried; Thomas Hennig, Editor(s)

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