|
KMID : 1035320170440040299
|
|
Korean Society for Dental Materials
2017 Volume.44 No. 4 p.299 ~ p.309
|
|
|
Shear bond strength of universal adhesives using different modes of application
|
|
Kim Hyeon-Ha
Choi Yoorina
Park Su-Jung
|
|
|
Abstract
|
|
|
|
This study measured the dentin bonding strength of two universal adhesives using different application modes at 24 hours following application and after accelerated aging. All-Bond Universal (AU) and Scotchbond Universal (SU) adhesives were used in this study. A three-step etch-and-rinse adhesive (Scotchbond Multipurpose) and a two-step self-etch adhesive (Clearfil SE Bond) were used as controls. One hundred eighty extracted bovine incisors were trimmed by exposing their labial dentin surfaces and embedded in cylindrical molds. Prepared specimens were randomly divided into six groups according to application mode (etch-and-rinse and self-etch) and type of adhesive. Thirty specimens were used for each group to determine the shear bond strength (SBS) of each adhesive to dentin. The exposed dentin surfaces were treated according to a protocol. Composite resin was applied on the treated surfaces and cured. Specimens were stored in water for 24 hours at room temperature. Specimens were assigned to two subgroups of aging or not. Shear bond strength was determined and data was analyzed using the one-way analysis of variance, Student’s t-test, and Tukey HSD test. Fractured surfaces were examined to determine the mode of failure. The resin/dentin interfaces of universal adhesives that underwent aging were analyzed under SEM. There was no significant difference in the SBS of universal adhesives in etch-and-rinse mode compared with self-etch mode, regardless of aging (p>0.05). There were also no significant differences in all groups after aging. The predominant mode of failure for specimens was mixed failure, except for AU in etch-and-rinse mode after aging. Conclusion For two universal adhesives, the mode of application did not affect their SBS to dentin, regardless of aging in sodium hypochlorite (NaOCl). The SBS of two universal adhesives was not significantly different after aging in either etch-and-rinse or self-etch mode compared to controls.
|
|
|
KEYWORD
|
|
|
Dentin boding, Self-etch, Shear bond strength, Etch-and-rinse, Universal adhesive
|
|
|
FullTexts / Linksout information
|
|
|
|
|
Listed journal information
|
|
|