流体树脂修复楔状缺损边缘微渗漏的试验研究

发布时间：2018-05-30 11:11

本文选题：树脂类 + 合成　；参考：《重庆医学》2016年23期

【摘要】：目的采用染色渗入法和扫描电镜观察比较流体树脂和通用型纳米树脂作为充填材料修复楔状缺损微渗漏的情况。方法选用临床上因牙周病松动拔除的楔状缺损前磨牙50颗,随机分为两组,分别为试验组(流体树脂)和对照组(通用型纳米树脂)充填楔状缺损,每组25颗。选取20颗牙经1%的亚甲蓝染色24h后,颊舌纵向剖开牙体,在体视显微镜下测量染液在壁、龈壁渗入的深度,用二者深度的平均值来评定染料渗入的情况。同时各选取5颗牙,颊舌纵向剖开后,用扫描电镜观察充填物与牙体交界处的情况。结果试验组测得染液渗入深度的平均值为(1.115±0.146)mm,显著低于对照组平均值(1.517±0.220)mm(t=-6.820,P0.05),扫描电镜示试验组中充填物与牙体之间缝隙明显小于对照组。结论修复楔状缺损时流体树脂较通用型纳米树脂微渗漏更小,洞壁封闭性更佳。
[Abstract]:Objective to observe and compare the microleakage of wedge-shaped defect with fluid resin and general nano-resin as filling materials by staining infiltration and scanning electron microscope (SEM). Methods Fifty premolars with wedge-shaped defect were randomly divided into two groups: the experimental group (fluid resin) and the control group (general nano-resin), with 25 teeth in each group. After 20 teeth were stained with 1% methylene blue for 24 hours, the buccal tongue was dissected longitudinally, and the depth of dye infiltration in the wall and gingival wall was measured under stereoscopic microscope, and the dye infiltration was evaluated by the average depth of both. At the same time, 5 teeth were selected respectively. After longitudinal dissection of the buccal tongue, the interface between the filling and the tooth was observed by scanning electron microscope (SEM). Results the average penetration depth of dye solution in the test group was 1.115 卤0.146 mm, which was significantly lower than that in the control group (1.517 卤0.220 mm), and the gap between the filling and the tooth in the test group was obviously smaller than that in the control group. Conclusion when repairing wedge-shaped defect, fluid resin has less microleakage and better wall closure than general nano-resin.
【作者单位】：海南省人民医院口腔科;
【分类号】：R781.2

【相似文献】