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Effect of Er:YAG laser application on the shear bond strength and microleakage between resin cements and Y-TZP ceramics

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Abstract

The objective of this study was to investigate the effect of Er:YAG laser irradiation on shear bond strength and microleakage between resin cements and yttrium-stabilized tetragonal zirconia (Y-TZP) ceramics. Eighty disc specimens of Y-TZP ceramics (6 mm × 4 mm) were prepared. The specimens were divided into two groups according to surface treatment (control and Er:YAG laser-treated). The control and lased specimens were separated into two groups for shear bond strength test (n = 20), and microleakage evaluation (n = 10). Specimens were subjected to shear bond strength test by a universal testing machine with a crosshead speed of 1 mm/min. Specimens for microleakage evaluation were then sealed with nail varnish, stained with 0.5% basic fuchsin for 24 h, sectioned, and evaluated under a stereomicroscope. The data were analyzed with one-way ANOVA and post hoc Tukey-Kramer multiple comparisons tests (α = 0.05) for shear bond strengths and a two related-samples tests (α = 0.05) for microleakage scores. Higher bond strength values were found in the laser-treated groups compared to the control groups. Microleakage scores among the groups showed that the laser-treated specimens had lower microleakage scores than those of control specimens in the adhesive-ceramic interface. Roughening surface of Y-TZP ceramic by Er:YAG laser increased the shear bond strengths of ceramic to dentin and reduced the microleakage scores.

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Authors and Affiliations

  1. Department of Prosthodontics, Cumhuriyet University, Faculty of Dentistry, 58140, Sivas, Turkey

    Hakan Akin & Faik Tugut

  2. Department of Restorative Dentistry, Cumhuriyet University, Faculty of Dentistry, 58140, Sivas, Turkey

    Gulsah Emine Akin

  3. Department of Prosthodontics, Cumhuriyet University, Faculty of Dentistry, 58140, Sivas, Turkey

    Umit Guney & Burcu Mutaf

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  1. Hakan Akin
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  2. Faik Tugut
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  3. Gulsah Emine Akin
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  4. Umit Guney
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Correspondence to Hakan Akin.

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Akin, H., Tugut, F., Emine Akin, G. et al. Effect of Er:YAG laser application on the shear bond strength and microleakage between resin cements and Y-TZP ceramics. Lasers Med Sci 27, 333–338 (2012). https://doi.org/10.1007/s10103-011-0883-4

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  • DOI: https://doi.org/10.1007/s10103-011-0883-4

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