两种不同方法使用生物活性玻璃治疗牙本质敏感的体外试验研究

发布时间：2018-05-07 22:34

本文选题：封闭效果 + 牙本质小管　；参考：《口腔医学研究》2016年12期

【摘要】：目的:体外比较涂抹法和透明压膜托盘法使用生物活性玻璃脱敏剂在短时间内对牙本质小管的封闭效果。方法:制取56颗离体牙的牙本质片,6%柠檬酸脱矿后按处理方法和处理时间不同随机分为7组,涂抹法1d、3d、7d组(A1、A2、A3),压膜法1、3、7d组(B1、B2、B3),空白对照组(C)。通过场发射扫描电镜(FESEM)观察比较各组牙本质小管封闭效果及再矿化物深度,X射线能谱分析(EDX)两种方法处理后牙本质表面再矿化物成分。结果:FESEM显示涂抹法和透明压膜托盘法使用生物活性玻璃脱敏剂后均能很好的封闭牙本质小管,牙本质小管内均可见明显矿化物沉积,牙本质小管暴露率A1组和B1组间无显著差异,A2组B2组,A3组B3组,差异有统计学意义(P0.05);空白对照组牙本质小管口开放,周界清晰,牙本质小管暴露率为(19.11±1.27)%。纵剖面观察AB组小管内均有再矿化沉积物。X射线能谱分析(EDX)分析,各组间牙本质表面钙/磷比无显著性差异。结论:透明压膜托盘法在短时间内可以显著提高生物活性玻璃对敏感牙本质小管的封闭效果,与涂抹法相比,封闭效果有显著性提高。
[Abstract]:Aim: to compare in vitro the sealing effect of bioactive glass desensitizer on dentine tubules with smear and transparent membrane pallet. Methods: after 6% citric acid demineralization of 56 extracted teeth, they were randomly divided into 7 groups according to the treatment method and treatment time. The group A _ (1) A _ (2) A _ (3) C _ (3) was smeared for one day, and the group B _ (1) A _ (2) A _ (3) C _ (3) for 7 days, and the control group (C _ (3). Field emission scanning electron microscopy (FESEM) was used to observe and compare the effect of dentin tubule sealing and the depth of mineralized matter (EDX) on the surface of dentin treated with EDX. Results the results of FESEM showed that both the smear method and the transparent membrane pallet method could seal the dentine tubules well after using bioactive glass desensitizer, and there were obvious mineralized deposits in the dentine tubules. There was no significant difference in the rate of dentin tubule exposure between group A 1 and group B1. There was significant difference between group A 2 and group A 2, the difference was statistically significant (P 0.05), while in the blank control group, the orifice of dentine tubules was open, the perimeter was clear, and the rate of exposure to dentine tubules was 19.11 卤1.27%. Longitudinal profile observation showed that there was no significant difference in calcium / phosphorus ratio of dentin surface between the two groups. Conclusion: transparent membrane pallet method can significantly improve the sealing effect of bioactive glass on sensitive dentine tubules in a short period of time, compared with the smear method, the sealing effect is significantly improved.
【作者单位】：南京医科大学口腔疾病研究江苏省重点实验室南京医科大学附属口腔医院综合科;南京医科大学附属口腔医院修复科;
【基金】：南京市科技计划项目(编号:201503062) 江苏高校优势学科建设工程资助项目(编号:2014-037) 南京医科大学口腔医学院横向合作项目(22011001)
【分类号】：R781.2

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