|
KMID : 0358920160430020137
|
|
Journal of the Korean Academy of Pedodontics
2016 Volume.43 No. 2 p.137 ~ p.144
|
|
|
Effect of Acidic Environment on the Push-Out Bond Strength and Surface Morphology of Tricalcium Silicate Materials
|
|
Park Mi-Sun
Kim Jae-Hwan
Choi Nam-Ki
Kim Seon-Mi
|
|
|
Abstract
|
|
|
The aim of this study was to evaluate the effect of a range of acidic pH values on the push-out bond strength and surface morphology of tricalcium silicate materials: Biodentine??, Theracal?? and ProRoot MTA??. The standardized lumens of root slices prepared from extracted single-root human teeth were filled with Biodentine??, Theracal?? and ProRoot MTA?? according to manufacturer’s instructions. The specimens were randomly divided into 4 groups (n = 20) for each material and then incubated for 4 days at 37℃; 3 acidic groups (butyric acid buffered at pH 4.4, 5.4, 6.4) and 1 control group (phosphate buffered saline solution at pH 7.4). The push-out bond strengths were then measured by using a universal testing machine and the surface morphology of each experimental group was analyzed by a scanning electron microscope. Biodentine?? and Theracal?? showed higher push-out bond strength compared with ProRoot MTA?? after
exposure to acidic pH values. A substantial change in the surface morphology of each material occurred after exposure to different pH values. In conclusion, the push-out bond strengths of Biodentine?? and Theracal?? are higher than the ProRoot MTA??. Further the acidic environment weakens the push-out bond strength and microstructure of tricalcium silicate
materials.
|
|
|
KEYWORD
|
|
|
Acidic environment, Biodentine, Theracal, Mineral trioxide aggregate, Push-out bond strength, Scanning electron microscope
|
|
|
FullTexts / Linksout information
|
|
 
|
|
|
Listed journal information
|
|
|