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Lasers in Medical Science

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01.07.2012 | Original Article

Effect of thermocycling on the bond strength of composite resin to bur and laser treated composite resin

verfasst von: Özden Özel Bektas, Digdem Eren, Seyda Herguner Siso, Gulsah E. Akin

Erschienen in: Lasers in Medical Science | Ausgabe 4/2012

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Abstract

The objective of this study was to investigate the effect of two different surface treatments (Er:YAG laser and bur) and three different numbers of thermal cycling (no aging, 1,000, 5,000, and 10,000 cycles) on the micro-shear bond strength of repaired composite resin. Ninety-six composite blocks (4 mm × 4 mm × 1 mm) obtained with a micromatrix hybrid composite were prepared. The composite blocks were then randomly divided into four groups (n = 24), according to the thermal cycling procedure: (1) stored in distilled water at 37°C for 24 h (control group), (2) 1,000 cycles, (3) 5,000 cycles, and (4) 10,000 cycles. After aging, the blocks were further subdivided into two subgroups (n = 12), according to surface treatment. Bur and laser-treated composite surfaces were treated with an etch&rinse adhesive system. In addition, a microhybrid composite resin was bonded to the surfaces via polyethylene tubing. Specimens were subjected to micro-shear bond strength test by a universal testing machine with a crosshead speed of 0 and 5 mm/min. The data were analyzed using one-way analysis of variance and Tukey tests (α = 0.05) for micro-shear bond strengths. After conducting a bond strength test, it was found that the laser and bur-treated specimens had similar results. Aging with 10,000 thermocycles significantly affected the repair bond strength of composite resins.

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Titel: Effect of thermocycling on the bond strength of composite resin to bur and laser treated composite resin
verfasst von: Özden Özel Bektas
Digdem Eren
Seyda Herguner Siso
Gulsah E. Akin
Publikationsdatum: 01.07.2012
Verlag: Springer-Verlag
Erschienen in: Lasers in Medical Science / Ausgabe 4/2012
Print ISSN: 0268-8921
Elektronische ISSN: 1435-604X
DOI: https://doi.org/10.1007/s10103-011-0958-2

Springer Medizin

Abstract

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