|
KMID : 1035320140410020105
|
|
Korean Society for Dental Materials
2014 Volume.41 No. 2 p.105 ~ p.111
|
|
|
Effect of polymerization mode of self-adhesive resin cement on the shear bond strength
|
|
Kim Ah-Jin
Oh Seung-Han
Bae Ji-Myung
|
|
|
Abstract
|
|
|
|
The purpose of this study was to evaluate the shear bond strengths of self-adhesive resin cements between resin adherend and bovine tooth according to polymerization mode. Self-adhesive resin cements used in the study were Bifix SE (Bifix), BisCem (Bis), PermaCem 2.0 (Perma) and U-Cem (UCem). Both self-cure and light-cure mode were performed for each resin cement. Bovine teeth were used and resin adherend block (2.3 mm in diameter × 2.2 mm in height) using composite resin were fabricated. In the case of self-cure mode, specimen were maintained for the setting time specified by manufacturer plus additional 30 minutes under 5 N load and then held in the 37°C dry oven for 90 minutes. In light-cure mode, each surface was light-cured for 20 seconds under the load of 5 N and the process was repeated two times. Then, they were put in the 37°C dry oven for post-irradation time or equivalent specified by the manufacturer plus additional 30 minutes. The shear bond strength was measured by using a universal testing machine (Z020, Zwick, Ulm, Germany) with cross-head speed of 0.75 mm/min with hemi-circular blade. There were no significant differences in the shear bond strengths among the self-adhesive resin cements in light-cure mode. In self-cure mode, the shear bond strength of UCem was significantly higher than others(p<0.05). For UCem, there was no significant difference in shear bond strength between self-cure and light-cure mode(p>0.05). However, the shear bond strengths of Bifix, Bis, and Perma decreased significantly in self-cure mode(p<0.05). For failure patterns, the resin cement was mainly attached to the resin adherend. Therefore, the shear bond strength of UCem in self-cure mode was the highest and was as high as in light-cure mode. Light-cure should be performed to achieve sufficient bond strength in Bifix, Bis, and Perma.
|
|
|
KEYWORD
|
|
|
Self-adhesive resin cement, Shear bond strength, Bovine teeth, Adherend, Polymerization mode
|
|
|
FullTexts / Linksout information
|
|
|
|
|
Listed journal information
|
|
|
|