渗透树脂联合乙醇湿粘接技术对牙本质小管封闭效果的研究

发布时间：2018-07-27 16:31

【摘要】：目的比较研究渗透树脂、Single Bond及渗透树脂应用乙醇湿粘接技术对牙本质小管的封闭效果。方法将60颗离体前磨牙制备成牙本质盘,按随机数字法分为3组,每组20颗,将每个样本纵向劈成两半,一半样本为空白对照,4 000倍电镜下统计牙本质小管总数,另一半根据涂抹试剂不同分渗透树脂组(A组),Single Bond组(B组)和渗透树脂应用乙醇湿粘接组(C组)。将涂抹试剂的样本再次纵向劈开,扫描电镜观察试剂对牙本质小管封堵及渗入效果。结果 A组牙本质小管口堵孔率为(70.10±2.13)%,渗透深度为(50±10.59)μm,树脂突较短,不连续;B组堵孔率为(86.35±1.73)%,渗透深度为(69±11.98)μm,树脂突稀疏,与管壁不密合;C组堵孔率为(95.65±1.46)%,渗透深度为(177±9.17)μm,树脂突饱满、致密。结论渗透树脂应用乙醇湿粘接能更好的封闭牙本质小管。
[Abstract]:Objective to compare the sealing effect of osmotic resin single Bond and osmotic resin on dentine tubules by ethanol wet bonding. Methods 60 premolars in vitro were prepared into dentin disks and divided into 3 groups (20 in each group) according to random number method. Each sample was split in half longitudinally, and the total number of dentine tubules was counted under electron microscope for half of the samples. The other half was divided into two groups: group A (group A) and group B (group B) and group C (group C). The sample of the smear reagent was split longitudinally again, and the effect of the reagents on the closure and infiltration of dentine tubules was observed by scanning electron microscope (SEM). Results in group A, the plugging rate of dentine tubules was (70.10 卤2.13), the penetration depth was (50 卤10.59) 渭 m, the resin process was shorter, the plugging rate was (86.35 卤1.73) in group B, the depth of osmosis was (69 卤11.98) 渭 m, the plugging rate of resin process was (95.65 卤1.46) in group C, the penetration depth was (177 卤9.17) 渭 m, the depth of permeation was (177 卤9.17) 渭 m. Dense. Conclusion the osmotic resin can better seal the dentine tubules with ethanol wet bonding.
【作者单位】：锦州医科大学附属第二医院修复科;锦州医科大学附属第二医院正畸科;
【基金】：辽宁省自然科学基金(2013022012)
【分类号】：R783.1

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