| 上颌第一磨牙不同根管预备方法的三维影像分析 |
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| 引用本文： | 孙喆,姚远,王琦,梁景平.上颌第一磨牙不同根管预备方法的三维影像分析[J].牙体牙髓牙周病学杂志,2011(8):445-448. |
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| 作者姓名： | 孙喆 姚远 王琦 梁景平 |
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| 作者单位： | 上海交通大学医学院附属第九人民医院牙体牙髓科上海市口腔医学重点实验室;上海大学快速制造工程中心; |
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| 摘 要： | 目的:通过建立上颌第一磨牙模型,三维分析根管预备后根管中心的偏移。方法:7个离体上颌第一磨牙,随机分为2组。ProTaper预备组(n=4)和K锉预备组(n=3),根管预备前和预备后行Micro-CT扫描,建立三维模型及根管中心线模型,比较预备前、后根管中心线之间的三维空间距离。统计分析采用t检验。结果:建立了上颌第一磨牙的三维模型及根管中心线模型,腭根和近颊根管距离根尖1 mm层面上,Pro-Taper组根管中心线偏移明显小于K锉组,远颊根管距离根尖2 mm层面上,K锉组根管中心线偏移明显小于ProTaper组(P<0.05)。结论:上颌第一磨牙三维模型及根管中心线模型的建立,能三维测量、比较根管预备后的中心偏移,为根管预备效果的评价提供有效的量化数据参考。
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| 关 键 词： | 三维重建 根管预备 中心线 |
Three dimensional analysis of maxillary first molars prepared by different root canal preparation methods |
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| SUN Zhe,YAO Yuan,WANG Qi,Liang Jing-ping.Three dimensional analysis of maxillary first molars prepared by different root canal preparation methods[J].Chinese Journal of Conservative Dentistry,2011(8):445-448. |
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| Authors: | SUN Zhe YAO Yuan WANG Qi Liang Jing-ping |
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| Institution: | (Department of Endodontics and Operative Dentistry,Ninth People′s Hospital,Shanghai Jiao Tong University School of Medicine,Shanghai Key Laboratory of Stomatology,Shanghai 200011,China) |
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| Abstract: | AIM:To analyze the root canal central deviation of maxillary first molars after root canal preparation with a reconstructed 3 dimensional model.METHODS:Seven extracted maxillary first molars were randomly divided into ProTaper prepared group(n=4) and K file prepared group(n=3).The samples were scanned by Micro-CT,reconstructed into three dimensional model and root canal central line model.The deviation from central line was measured and analyzed before and after root canal preparation.Statistical analysis w... |
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| Keywords: | three dimensional reconstruction root canal preparation central line |
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