|
KMID : 1023820140060060434
|
|
The Journal of Advanced Prosthodontics
2014 Volume.6 No. 6 p.434 ~ p.443
|
|
|
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
|
|
|
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.
|
|
|
KEYWORD
|
|
|
Surface pretreatments, Shear bond strength, Vertise flow, Er:YAG laser, Tribochemical silica coating, CAD/CAM ceramic
|
|
|
FullTexts / Linksout information
|
|
|
|
|
Listed journal information
|
|
  
|