19 January 1996 In-vitro investigation of bactericidal effect and dentin permeability of an Nd:YAG laser
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Proceedings Volume 2623, Medical Applications of Lasers III; (1996); doi: 10.1117/12.230330
Event: BiOS Europe '95, 1995, Barcelona, Spain
Abstract
The aim of this study was to investigate the effect of a pulsed Nd-YAG laser on E. coli and S. aureus in suspensions. The temperature increased in the bacterial suspensions after each irradiation according to power and dye concentration. The bactericidal effect was evaluated by comparing the number of viable bacteria remaining after 24 h in the irradiated and the control specimens. Afterwards, an in vitro study of dentin permeability on horizontal sections of healthy dentin has been carried out following an original method derived from Pashley's experimentation. The results indicate the parameters (1,5 W; 20 Hz; with black dye) which should be used to obtain the bactericidal effect. An undesirable rise in temperature and in dentin permeability has been observed and a S.E.M. examination has been carried out in order to explain this result.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Brigitte Ragot-Roy, Claude Severin, "In-vitro investigation of bactericidal effect and dentin permeability of an Nd:YAG laser", Proc. SPIE 2623, Medical Applications of Lasers III, (19 January 1996); doi: 10.1117/12.230330; https://doi.org/10.1117/12.230330
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KEYWORDS
Nd:YAG lasers

In vitro testing

Bacteria

Temperature metrology

Fiber lasers

Information operations

Chemical elements

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