CAJ | 학술논문

目的:分析含氟牙膏与含氟涂料对脱矿釉面再矿化的作用. 方法:用离体牛恒切牙制备釉质片,酸蚀脱矿后随机分为3组(n=9):A组为对照组,用生理盐水处理(2次/日),B组用含氟牙膏规律处理(2次/日),C组用含氟涂料1次处理;各组标本置于人工唾液模拟口腔孵育2周. 分别于酸蚀前、后以及分组处理2周后,用显微硬度测量仪测定釉面显微硬度,SEM观察釉面形态,图像分析釉面微孔隙面积;对数据进行统计学分析. 结果:酸蚀后釉面显微硬度较酸蚀前显著降低(P<0. 05);再矿化2周后,A组釉面显微硬度提高不明显(P>0. 05);B、C组显微硬度明显提高(P<0. 05). 再矿化处理2 周后,A组釉面有少许矿物沉积, B、C 组釉面均有明显的矿物沉积. 再矿化处理2周后,A组微孔隙面积减小不明显(P>0. 05);B、C组微孔隙面积明显减小(P<0. 05);B、C组间差异不明显(P>0. 05). 结论:含氟牙膏和含氟涂料对脱矿釉面再矿化均有促进作用,规律自用含氟牙膏可能达到与医用含氟涂料类似效果.
목적:분석함불아고여함불도료대탈광유면재광화적작용. 방법:용리체우항절아제비유질편,산식탈광후수궤분위3조(n=9):A조위대조조,용생리염수처리(2차/일),B조용함불아고규률처리(2차/일),C조용함불도료1차처리;각조표본치우인공타액모의구강부육2주. 분별우산식전、후이급분조처리2주후,용현미경도측량의측정유면현미경도,SEM관찰유면형태,도상분석유면미공극면적;대수거진행통계학분석. 결과:산식후유면현미경도교산식전현저강저(P<0. 05);재광화2주후,A조유면현미경도제고불명현(P>0. 05);B、C조현미경도명현제고(P<0. 05). 재광화처리2 주후,A조유면유소허광물침적, B、C 조유면균유명현적광물침적. 재광화처리2주후,A조미공극면적감소불명현(P>0. 05);B、C조미공극면적명현감소(P<0. 05);B、C조간차이불명현(P>0. 05). 결론:함불아고화함불도료대탈광유면재광화균유촉진작용,규률자용함불아고가능체도여의용함불도료유사효과.
AIM:To analyze the effects of fluoride toothpaste and fluoride varnish on enamel remineraliza-tion in vitro. METHODS:Enamel specimens of extracted bovine teeth were made and demineralized by 370 g/L phos-phoric acid. Specimens were randomly divided into 3 groups(n=9). The samples in group A, B and C were treated by normal saline( twice a day) , a fluoride toothpaste( twice a day) and fluoride varnish( only once) respectively. Speci-mens were incubated in artificial saliva for 2 weeks. Micro-hardness evaluation, SEM observation and image analysis were performed before and after demineralization and after 2-week-remineralization. RESULTS: Enamel hardness decreased in all groups after demineralization(P<0. 05). 2 weeks after remineralization, micro-hardness value in group A increased slightly (P>0. 05), while it increased significantly in group B and C (P<0. 05). 2 weeks after remineralization, a large amount of remineralization deposits were found on the endamal surface in group B and C, but only a few was found in Group A. After remineralization the micro-hole area in group A decreased slightly (P>0. 05), but remarkably decreased in group B and C(P<0. 05). There was no difference between group B and C (P>0. 05). CONCLUSION:Both fluoride toothpaste and fluoride varnish have positive effects on remineralizaion of enamel in vitro.