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J Adv Prosthodont 2014;6:434-43
http://dx.doi.org/10.4047/jap.2014.6.6.434
Shear bond strength of a new self-adhering flowable composite resin for lithium disilicatereinforced CAD/CAM ceramic material Ugur Erdemir1*, Hande Sar Sancakli1, Erkan Sancakli2, Meltem Mert Eren1, Sevda Ozel3, Taner Yucel1, Esra Yildiz1 Department of Operative Dentistry, Faculty of Dentistry, Istanbul University, Capa-Istanbul, Turkey Department of Prosthodontics, Faculty of Dentistry, Istanbul University, Capa-Istanbul, Turkey 3 Faculty of Medicine Department of Biostatistics, Istanbul University, Capa-Istanbul, Turkey 1 2
PURPOSE. The purpose of this study was to evaluate and compare the effects of different surface pretreatment techniques on the surface roughness and shear bond strength of a new self-adhering flowable composite resin for use with lithium disilicate-reinforced CAD/CAM ceramic material. MATERIALS AND METHODS. A total of one hundred thirty lithium disilicate CAD/CAM ceramic plates with dimensions of 6 mm × 4 mm and 3 mm thick were prepared. Specimens were then assigned into five groups (n=26) as follows: untreated control, coating with 30 µm silica oxide particles (CojetTM Sand), 9.6% hydrofluoric acid etching, Er:YAG laser irradiation, and grinding with a high-speed fine diamond bur. A self-adhering flowable composite resin (Vertise Flow) was applied onto the pre-treated ceramic plates using the Ultradent shear bond Teflon mold system. Surface roughness was measured by atomic force microscopy. Shear bond strength test were performed using a universal testing machine at a crosshead speed of 1 mm/min. Surface roughness data were analyzed by one-way ANOVA and the Tukey HSD tests. Shear bond strength test values were analyzed by Kruskal-Wallis and Mann-Whitney U tests at α=.05. RESULTS. Hydrofluoric acid etching and grinding with high-speed fine diamond bur produced significantly higher surface roughness than the other pretreatment groups (P
J Adv Prosthodont 2014;6:434-43
http://dx.doi.org/10.4047/jap.2014.6.6.434
Shear bond strength of a new self-adhering flowable composite resin for lithium disilicatereinforced CAD/CAM ceramic material Ugur Erdemir1*, Hande Sar Sancakli1, Erkan Sancakli2, Meltem Mert Eren1, Sevda Ozel3, Taner Yucel1, Esra Yildiz1 Department of Operative Dentistry, Faculty of Dentistry, Istanbul University, Capa-Istanbul, Turkey Department of Prosthodontics, Faculty of Dentistry, Istanbul University, Capa-Istanbul, Turkey 3 Faculty of Medicine Department of Biostatistics, Istanbul University, Capa-Istanbul, Turkey 1 2
PURPOSE. The purpose of this study was to evaluate and compare the effects of different surface pretreatment techniques on the surface roughness and shear bond strength of a new self-adhering flowable composite resin for use with lithium disilicate-reinforced CAD/CAM ceramic material. MATERIALS AND METHODS. A total of one hundred thirty lithium disilicate CAD/CAM ceramic plates with dimensions of 6 mm × 4 mm and 3 mm thick were prepared. Specimens were then assigned into five groups (n=26) as follows: untreated control, coating with 30 µm silica oxide particles (CojetTM Sand), 9.6% hydrofluoric acid etching, Er:YAG laser irradiation, and grinding with a high-speed fine diamond bur. A self-adhering flowable composite resin (Vertise Flow) was applied onto the pre-treated ceramic plates using the Ultradent shear bond Teflon mold system. Surface roughness was measured by atomic force microscopy. Shear bond strength test were performed using a universal testing machine at a crosshead speed of 1 mm/min. Surface roughness data were analyzed by one-way ANOVA and the Tukey HSD tests. Shear bond strength test values were analyzed by Kruskal-Wallis and Mann-Whitney U tests at α=.05. RESULTS. Hydrofluoric acid etching and grinding with high-speed fine diamond bur produced significantly higher surface roughness than the other pretreatment groups (P
