수종의 자이오머의 불소 유리량과 압축 강도 평가
Fluoride Release and Compressive Strength of Several Giomers
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초록
본 연구의 목적은 최근 개발된 두 종류의 자이오머(Beautifil Flow Plus F00, Beautifil Flow Plus F03)의 불소유리량과 열순환 후 압축강도를 기존의 자이오머, 레진 강화형 글라스아이오노머, 복합 레진과 비교하여 평가하는 것이다. 불소 유리량 측정을 위해 군별로 15개씩의 시편을 제작하여 31일간 pH/ISE meter를 이용하여 불소 농도를 측정하였고압축 강도 측정을 위해 군별로 15개씩의 시편을 제작하여 열 순환 후 만능 경성 시험기를 이용하여 시편이 파절된 시점의 최대강도를 측정하였다. 최근 개발되어 출시된 자이오머는 기존의 자이오머에 비해 불소 유리량은 유의하게 증가하였다. 압축 강도도 개선되었으며, 복합 레진과 비교하여 통계적 유의 차가 없는 것으로 나타나 임상적 가치가 높은 것으로 사료되었다.
Abstract
The aim of this study was to compare the compressive strength and amount of fluoride-release of recently developed giomers (Beautifil Flow Plus F00, Beautifil Flow Plus F03), conventional giomer, resin-modified glass ionomer and composite resin. Fifteen cylindrical specimens for each group were prepared to measure fluoride release. It was measured using pH/ISE meter and fluoride ion electrode every 24 hours for the first 7 days and every 72 hours until the 31st day. Also, fifteen cylindrical specimens for each group after thermocycling were prepared to measure compressive strength. The universal testing machine (Kyung-sung Testing Machine Co., Korea) was used and the crosshead speed was 1 mm/min. Recently developed giomers showed more fluoride release and higher compressive strength than conventional giomer. It would be a good alternative to composite resin.
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