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Proceedings Paper

Effects of argon laser curing on dentin shear bond strengths
Author(s): G. Lynn Powell; Richard J. Blankenau D.D.S.
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Paper Abstract

Previous studies have demonstrated the ability of the argon laser to polymerize light activated materials and improve enamel shear bond strengths. This study was conducted to evaluate the effects of the argon laser on dentin shear bond strengths of current dentin bonding systems. Argon laser (HGM Model 8) at 231 mw and 280 mw, 5 second bonding agent, 10 seconds composite and a conventional curing light (Translux EC/Kulzer) at 10 seconds bonding agent, 20 second composite were used to polymerize samples of dentin bonding systems: Scotchbond Multi-Purpose Plus (3M) and Prime Bond (Dentsply/Caulk), both with TPH (Dentsply/Caulk) composite. A flat dentin bonding site (600 grit) was prepared on the buccal surface of extracted human teeth. Twelve samples were made for each set of parameters for both laser and conventional light totaling 60 samples. Samples were stored in distilled water in light- proof containers for 24 hours at 37 degree(s)C. Shear bond strengths (MPa) were determined for each sample on the Instron testing machine. Mean values were calculated for each set of data and ANOVA with Fisher PLSD were used for statistical analysis. The argon laser provided bond strengths that were 21 - 24% greater than those of the conventional curing light system.

Paper Details

Date Published: 23 April 1996
PDF: 5 pages
Proc. SPIE 2672, Lasers in Dentistry II, (23 April 1996); doi: 10.1117/12.238759
Show Author Affiliations
G. Lynn Powell, Univ. of Utah (United States)
Richard J. Blankenau D.D.S., Creighton Univ. (United States)

Published in SPIE Proceedings Vol. 2672:
Lasers in Dentistry II
Harvey A. Wigdor D.D.S.; John D. B. Featherstone; Joel M. White D.D.S.; Joseph Neev, Editor(s)

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