혈액오염이 Tricalcium Silicate 재료의 압출강도와 표면형태에 미치는 영향
Effect of Blood Contamination on the Push-Out Bond Strength and Surface Morphology of Tricalcium Silicate Materials
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초록
이 연구의 목적은 혈액오염 시 Biodentine, Theracal, mineral trioxide aggregate(MTA)의 압출강도를 측정하고 표면형태를 관찰하는 것이었다. Biodentine, Theracal, MTA 각각의 재료를 2개의 그룹으로 나누었다. 대조군은 phosphate buffered saline 용액 조건에서, 실험군은 fetal bovine serum 조건에서 4일간 37℃에서 보관하였다. 이후 압출강도를 측정하고 주사전자현미경을이용하여 표면형태를 분석하였다. Biodentine과 Theracal은 모든 조건에서 MTA보다 유의하게 더 높은 압출강도를 보였고 혈액오염 시 모든 재료의 압출강도는 유의하게 감소하였다. 표면형태 관찰결과 혈액오염 후 모든 재료의 표면형태가 변화하였다. 혈액오염 조건에서 Biodentine과 Theracal은 MTA와 비교하여 더 높은 압출강도를 보였으므로 혈액오염 조건에 사용하기에 더 적절할 수 있다.
Abstract
The aim of this study was to evaluate the effect of blood contamination on the push-out bond strength and surface morphology of tricalcium silicate materials; Biodentine, Theracal and mineral trioxide aggregate. The standardized lumens of root slices prepared from extracted single-root human teeth were filled with Biodentine, Theracal and mineral trioxide aggregate by manufacturer’s instruction. The specimens were randomly divided into 2 groups (n = 20) for each material and then incubated for 4 days at 37℃; control group (phosphate buffered saline solution) and experimental group (fetal bovine serum). The push-out bond strengths were then measured by a universal testing machine and the surface morphology of each experimental group was analyzed by scanning electron microscope. Biodentine and Theracal showed higher push-out bond strength compared with mineral trioxide aggregate after exposure to fetal bovine serum. A substantial change in the surface morphology of each material was observed after exposure to fetal bovine serum. In conclusion, the push-out bond strengths of Biodentine and Theracal were higher than mineral trioxide aggregate when exposed to blood contamination. Therefore, it is supposed that the use of Biodentine and Theracal is appropriate in the presence of blood.
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