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Quintessence Publishing: Journals: JOLA


The Journal of Oral Laser Applications

Edited by Prof Dr Andreas Moritz and Prof G. Lynn Powell

Official publication of the European Society for Oral Laser Applications

ISSN (print) 1473-7809 • ISSN (online) 1867-5611

Summer 2009
Volume 9 , Issue 2

Pages: 117 - 120
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Effect of Nd:YAG Laser on the Shear Bond Strength of Composite to Dentin

Shahabi, Sima / Kharazifar, M. J.

Purpose: This study was conducted to investigate the surface effects on dentin following laser etching with an Nd:YAG laser, and to determine the shear bond strengths of composite to untreated and laser-treated dentin. Materials and Methods: Dentin surfaces from freshly extracted permanent molars were subjected to laser treatment with an Nd:YAG laser. The results were analyzed using an SPSS/PC multiple range test. The shear bond strengths of laser-treated dentin/composite and untreated dentin/composite by dentin bonding were also determined. These results were also compared using the SPSS/PC multiple range test. Results: Shear bond strength in laser and acid groups were 6.70 2.86 and 15.24 8.51 MPa, respectively. Bond strength in the laser group was significantly lower than in the other group (p < 0.01). Conclusion: The Nd:YAG dental laser tested produced weaker shear bond strength than conventional acid etching.

Keywords: shear bond, dentin, Nd:YAG laser

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