渗透树脂治疗对人工釉质龋表面微硬度影响的研究

发布时间：2018-03-28 22:28

本文选题：渗透树脂　切入点：人工釉质龋　出处：《牙体牙髓牙周病学杂志》2014年08期

【摘要】：目的:观察不同脱矿程度人工釉质龋经渗透树脂治疗后其表面微硬度的提高程度。方法:制备牛牙釉质样本60个,随机分为6组,分别置脱矿液中脱矿10、20、30、40、50、60 d;然后用ICON渗透树脂对各组人工釉质龋病损部位进行处理;分别于脱矿前、脱矿后、渗透树脂后用韦氏微硬度仪检测各组病损表面的微硬度值,用3D激光扫描显微系统观察病损表面的形貌。结果:各组样本脱矿前表面微硬度值基本一致(P0.05),脱矿后均明显降低(P0.05);经渗透树脂处理后,病损表面微硬度均显著提高(P0.05),但低于基线水平(P0.05),依次为脱矿60 d50 d40 d30 d20 d10 d,10、20、30、40 d各组间无显著性差异(P0.05)外,其他各组间差异均有统计学意义(P0.05)。抛光后的釉质表面无树脂残留。结论:渗透树脂能提高釉质龋病损表面的微硬度,但不能达到正常釉质的水平;提高程度与病损脱矿程度相关。
[Abstract]:Objective: to observe the improvement of surface microhardness of artificial enamel caries with different demineralization degree after treated with permeable resin. Methods: 60 bovine enamel samples were prepared and randomly divided into 6 groups. Demineralization in demineralized solution was carried out for 60 days, and then ICON osmotic resin was used to treat the sites of artificial enamel caries in each group. Before and after demineralization, the microhardness of the surface of each group was detected by Wechsler microhardness analyzer. The morphology of the diseased surface was observed by 3D laser scanning microscopy. Results: the surface microhardness of each group of samples before demineralization was basically consistent with that of P0.05, and decreased significantly after demineralization, and was treated with permeable resin. The surface microhardness of the diseased lesions increased significantly (P 0.05), but it was lower than the baseline level (P 0.05), followed by demineralization for 60 days, 50 days, 40 days, 30 days, 20 days, 10 days, 20 days, 30 days, 40 days. There was no significant difference between the groups (P 0.05). There was no residual resin on the enamel surface after polishing. Conclusion: the permeable resin can improve the microhardness of enamel caries, but it can not reach the normal enamel level. The degree of improvement is related to the degree of demineralization.
【作者单位】：北京大学口腔医学院综合科;北京大学口腔医学院牙体牙髓科;
【分类号】：R781.1

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