Glass ionomer cement초기 경화시 수분접촉의 영향에 관한 연구
소속 상세정보
엄정문/Gudbrand Øilo
KMID : 0362319930180020507
Abstract
The purpose of this study was to observe the effect of immersion in water at 3, 5, 7, and 10 minutes after mixing on the surface of three regular and one light-curing glass-ionomer cement by measuring penetration of a methylene blue solution.
Early
solubility of these cements was also measured and compared with that of a zinc phosphate and a polycarboxylate cement. A blue-stained zone was observed in all glass-ionomer cement, but an inner, opaque zone was observed in only two of the regular
glass-ionomer cements. Extending the time between start of mixing and immersion on water decreased the width of both zones in all cements and markedly lowered the loss of substance from the surface of regular glass-ionomer cements. However, time
after
mixing had no or only a limited effect on the loss of substance from the light-curing glass-ionomer cement, the zine phosphate cement, or the polycarboxylate cement.
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