산성 환경이 Tricalcium Silicate 재료의 압출강도와 표면형태에 미치는 영향
Effect of Acidic Environment on the Push-Out Bond Strength and Surface Morphology of Tricalcium Silicate Materials
박미선, 김재환, 최남기, 김선미,
소속 상세정보
박미선 ( Park Mi-Sun ) - 전남대학교 치의학전문대학원 소아치과학교실
김재환 ( Kim Jae-Hwan ) - 전남대학교 치의학전문대학원 소아치과학교실
최남기 ( Choi Nam-Ki ) - 전남대학교 치의학전문대학원 소아치과학교실
김선미 ( Kim Seon-Mi ) - 전남대학교 치의학전문대학원 소아치과학교실
KMID : 0358920160430020137
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.
키워드
Acidic environment; Biodentine; Theracal; Mineral trioxide aggregate; Push-out bond strength; Scanning electron microscope
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