Shear bond strength of a new self-adhering flowable composite resin for lithium disilicate-reinforced CAD/CAM ceramic material
Ugur Erdemir, Hande Sar Sancakli, Erkan Sancakli, Meltem Mert Eren, Sevda Ozel, Taner Yucel, Esra Yildiz,
소속 상세정보
( Ugur Erdemir ) - Istanbul University Faculty of Dentistry Department of Operative Dentistry
( Hande Sar Sancakli ) - Istanbul University Faculty of Dentistry Department of Operative Dentistry
( Erkan Sancakli ) - Istanbul University Faculty of Dentistry Department of Prosthodontics
( Meltem Mert Eren ) - Istanbul University Faculty of Dentistry Department of Operative Dentistry
( Sevda Ozel ) - Istanbul University Faculty of Dentistry Department of Operative Dentistry
( Taner Yucel ) - Istanbul University Faculty of Dentistry Department of Operative Dentistry
( Esra Yildiz ) - Istanbul University Faculty of Dentistry Department of Operative Dentistry
KMID : 1023820140060060434
Abstract
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 (Cojet™ 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<.05). Hydrofluoric acid etching and silica coating yielded the highest shear bond strength values (P<.001).
CONCLUSION : Self-adhering flowable composite resin used as repair composite resin exhibited very low bond strength irrespective of the surface pretreatments used.
키워드
Surface pretreatments; Shear bond strength; Vertise flow; Er:YAG laser; Tribochemical silica coating; CAD/CAM ceramic
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