CAJ | 학술논문

目的：探讨渗透树脂治疗人工脱矿乳牙釉质早期龋对其釉质显微硬度的影响。方法：选取5～7岁儿童因滞留拔除的无龋下颌乳中切牙21颗，制备人工脱矿釉质模型后，随机将其分为空白对照组、脱矿组、渗透树脂治疗组，每组7个样本，采用显微硬度测试仪测量各组牙釉质显微硬度，观察釉质显微硬度的变化。结果：空白对照组、渗透树脂治疗组牙釉质表面显微硬度明显高于脱矿组，差异具有统计学意义（P＜0．01）；渗透树脂治疗组显微硬度低于空白对照组，差异具有统计学意义（P＜0．01）。结论：乳牙釉质脱矿后牙釉质表面显微硬度降低，渗透树脂治疗釉质脱矿可提高牙釉质表面的显微硬度。
목적：탐토삼투수지치료인공탈광유아유질조기우대기유질현미경도적영향。방법：선취5～7세인동인체류발제적무우하합유중절아21과，제비인공탈광유질모형후，수궤장기분위공백대조조、탈광조、삼투수지치료조，매조7개양본，채용현미경도측시의측량각조아유질현미경도，관찰유질현미경도적변화。결과：공백대조조、삼투수지치료조아유질표면현미경도명현고우탈광조，차이구유통계학의의（P＜0．01）；삼투수지치료조현미경도저우공백대조조，차이구유통계학의의（P＜0．01）。결론：유아유질탈광후아유질표면현미경도강저，삼투수지치료유질탈광가제고아유질표면적현미경도。
Objective:To evaluate the effect of resin infiltration on themicro-hardness of deciduous tooth enamelsurface. Method:Twenty-one extracted sound mandibular deciduous central incisor for dalay to obtain artificial subsurfacelesion. Then they were randomlydivided into 3 groups which included control group,demineralization group and resin infiltrationgroup.Each group contained 7 teeth.The micro-Vickers hardness test was used to investigate the change in hardnessof enamel. Result:The micro-hardness of enamel surface in control group and resin infiltration group was significantly higherthan that in demineralization group(P <0.01).The micro-hardness in resin infiltration group was obviously less than thatin control group(P <0.01). Conclusion:With the limitation of this study the micro-hardness of enamel decreased after demineralization.Infiltration of resin could significantly improve the hardness of demineralized enamel surface.