Effect of thermocycling on the bond strength of composite resin to bur and laser treated composite resin
| Autor: | Şeyda Hergüner Siso, Digdem Eren, Gulsah E Akin, Özden Özel Bektaş |
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| Přispěvatelé: | [Bektas, Ozden Ozel -- Eren, Digdem -- Siso, Seyda Herguner -- Akin, Gulsah E.] Cumhuriyet Univ, Dept Restorat Dent, Fac Dent, Sivas, Turkey |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Dental Stress Analysis
Materials science Hot Temperature Composite number Polyurethanes Acrylic Resins Micro-shear bond strength Dermatology Temperature cycling Lasers Solid-State Composite Resins Crosshead chemistry.chemical_compound Materials Testing Composite repair Composite material YAG laser [Er] Universal testing machine Analysis of Variance Bond strength Dental Bonding Polyethylene Thermocycling Distilled water chemistry Surgery Shear Strength Er:YAG laser |
| Popis: | WOS: 000305274100006 PubMed ID: 21833556 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 x 4 mm x 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 37A degrees 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 (alpha = 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. |
| Databáze: | OpenAIRE |
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