α-TCP를 첨가한 글라스 아이오노머 시멘트의 법랑질 탈회저항성
Resistance to decalcification of enamel of glass ionomer cement with α-TCP
강재경, 김희경, 이민영, 김광만, 김경남, 김명은,
소속 상세정보
강재경 ( Kang Jae-Kyoung ) - 신구대학교 치위생과
김희경 ( Kim Hee-Kyoung ) - 대원대학교 치위생과
이민영 ( Lee Min-Young ) - 영동대학교 치위생학과
김광만 ( Kim Kwang-Man ) - 연세대학교 치과대학 치과생체재료공학교실
김경남 ( Kim Kyoung-Nam ) - 연세대학교 치과대학 치과생체재료공학교실
김명은 ( Kim Myung-Eun ) - 대원대학교 치위생과
KMID : 1035320150420020107
Abstract
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.
키워드
Decalcification; Glass ionomer; α-TCP(alpha-tricalcium phosphate); QLF(Quantitative light-induced fluorescence)
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