α-TCP를 첨가한 글라스 아이오노머 시멘트의 법랑질 탈회저항성

강재경; 김희경; 이민영; 김광만; 김경남; 김명은

doi:10.14815/kjdm.2015.42.2.107

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저널정보

대한치과재료학회
대한치과재료학회지 학술저널
대한치과재료학회지 제42권 제2호
2015.6 107 - 115 (9page)
DOI : 10.14815/kjdm.2015.42.2.107

저자정보

강재경 (신구대학교)
김희경 (대원대학교)
이민영 (영동대학교)
김광만 (연세대학교)
김경남 (연세대학교)

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초록·키워드

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The aim of this study was to evaluate changes in decalcification resistance of glass ionomer containing α-TCP. Total forty cavities were prepared form extracted bovine teeth and were divided into four groups of ten each in order to evaluate decalcification resistance. The cavities of each groups were restored with glassionomer cement containing 0 %(Group1), 5 %(Group2), 15 %(Group3) and 25 %(Group4) α-TCP. After half of each specimen were treated with varnish, there were immersed in a decalcifying solution for 96 hours at 37 ℃. The mineral loss of specimens were measured by fluorescence loss values using a QLF-D. In addition, compressive strength were measured according to ISO 9917-1. According to the results, loss of fluorescence(△F, %) was ?5.91 in group 1, ?5.88 in group 2, ?5.82 in group 3, ?6.06 in group 4 (p>0.05). loss of minerals(△Q, %, ㎜²) was ?245.72 in group1, ?146.40 in group2, ?143.50 in group3, ?251.98 in group4(p>0.05). Decalcified area(area, ㎜²) was 40.75(35.3) in group1, 24.05(48.13) in group2, 23.9(22.02) in group3, 28.28(58.41) in group4(p>0.05). Loss of fluorescence, loss of minerals and decalcified area of group2 and group3 were lower than group1 and 4. But there were no significant difference among groups. Compressive strength(MPa) was 148.99 in group1, 121.12 in group2, 62.59 in group3, 19.38 in group4, decreased statistically significant(p＜0.05). Although there were no significant difference to resistance of decalcification, it was showed that resistance of decalcification of glass ionomer cement containing 5 % and 15 % of α-TCP were lower than glass ionomer cement.

#Decalcification #Glass ionomer #α-TCP(alpha-tricalcium phosphate) #QLF(Quantitative light-induced fluorescence)