Effect of Acidic Environment on the Push-Out Bond Strength and Surface Morphology of Tricalcium Silicate Materials

박미선; 김재환; Namki Choi; Kim Seon Mi

doi:10.5933/JKAPD.2016.43.2.137

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.

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* 2021년 이후 발행 논문의 참고문헌은 현재 구축 중입니다.

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