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Journal of Biomedical Optics

<italic<In vitro</italic< study of the erbium:yttrium aluminum garnet laser cleaning of root canal by the use of shadow photography
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Paper Abstract

Erbium:yttrium aluminum garnet laser cleaning is a promising technique in endodontic treatment. In our <italic<in vitro</italic< study, we measured the vapor-bubble dynamics in the root canal by using shadow photography. The canal model was made of a plastic cutout placed between two transparent glass plates. An artificial smear layer was applied to the glass to study cleaning efficiency. In our results, no shock waves have been observed, since the pulp-chamber dimensions have been in the same range as the maximum diameter of the vapor bubble. This leads to the conclusion that shock waves are not the main cleaning mechanism within our model. However, the cleaning effects are also visible in the regions significantly below the bubble. Therefore, it can be concluded that fluid flow induced by the bubble’s oscillations contributes significantly to the canal cleaning. We also proposed a simple theoretical model for cleaning efficiency and used it to evaluate the measured data.

Paper Details

Date Published: 20 January 2016
PDF: 7 pages
J. Biomed. Opt. 21(1) 015008 doi: 10.1117/1.JBO.21.1.015008
Published in: Journal of Biomedical Optics Volume 21, Issue 1
Show Author Affiliations
Peter Gregorcic, Univ. of Ljubljana (Slovenia)
Nejc Lukac, Univ. of Ljubljana (Slovenia)
Janez Možina, Univ. of Ljubljana (Slovenia)
Matija Jezeršek, Univ. of Ljubljana (Slovenia)

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