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- 2016
MTAN用于桩道清洁能力的实验研究
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Abstract:
摘要 目的:研究MTAN在桩道制备后用于去除玷污层的能力。方法:经筛选得到符合要求的40颗单根管前磨牙,于釉牙骨质界冠方2mm处截去牙冠。根管预备、根管充填、桩道制备后随机均分为5组,分别用以下溶液进行桩道冲洗。A组:10mL0.9%盐水;B组:2.5mL3%NaOCl溶液+2.5mL18%EDTA溶液;C组:5mL3%NaOCl溶液+5mL18%EDTA溶液;D组:5mLMTAN溶液;E组10mLMTAN溶液。每组冲洗后,均用10mL0.9%盐水冲洗。在场发射扫描电镜下观察桩道内壁形态,用Peters’标准进行计分,记录数据并统计分析。结果:A组未能去除玷污层,牙本质小管口全部消失。B组残留大量厚的玷污层,较多的牙本质小管被堵塞;C组残存的玷污层覆盖面积达50%,牙本质小管部分开放。D组和E组玷污层大多数被去除,牙本质小管口多数开放。结论:MTAN可有效去除桩道预备后的玷污层
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