| Micro-CT评价不同弯曲度根管预备后根尖偏移的实验研究 |
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| 引用本文： | 钟素兰,尹仕海,陈朝辉,揭有琼,汪莉.Micro-CT评价不同弯曲度根管预备后根尖偏移的实验研究[J].国际口腔医学杂志,2009,36(6):657-660. |
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| 作者姓名： | 钟素兰 尹仕海 陈朝辉 揭有琼 汪莉 |
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| 作者单位： | [1]四川大学华西口腔医院牙体牙髓病科,四川成都610041 [2]惠州市华禹公司工程部,广东惠州516007 [3]成都市双流县人民医院口腔科,四川成都610200 |
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| 摘 要： | 目的使用Micro—CT评价不同弯曲度根管预备后的根尖偏移。方法选取10颗离体上颌磨牙共30个根管。根据不同的弯曲度分为轻度、中度和重度弯曲共3组根管，每组10个根管。使用不锈钢K型锉采取逐步后退法预备根管，分别于预备前、中和后进行Micro—CT扫描，评价根管的根尖偏移情况。结果根管预备至25号锉时，各弯曲度根管组间的根尖偏移差异有统计学意义；预备至35号锉时，重度弯曲根管组与轻度和中度弯曲根管组间差异均有统计学意义，而轻度和中度弯曲根管组间差异无统计学意义。各组预备至35号和25号时的根尖偏移差异均有统计学意义。结论根管弯曲度越大，根尖偏移度越大；根管预备锉的号码越大，根尖偏移越明显。
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| 关 键 词： | 根尖偏移 Micro-CT 弯曲根管 不锈钢K型锉 |
Evaluation of apical transportation after shaping different curved root canals by Micro-CT |
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| ZHONG Sulan,YIN Shi-hai,CHEN Zhao-hui,JIE You-qiong,WANG Li..Evaluation of apical transportation after shaping different curved root canals by Micro-CT[J].Journal of International Stomatology,2009,36(6):657-660. |
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| Authors: | ZHONG Sulan YIN Shi-hai CHEN Zhao-hui JIE You-qiong WANG Li |
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| Abstract: | Objective To evaluate the apical transportation after shaping different curved root canals by MicroCT. Methods The 30 roots of 10 maxillary malors were used. The canals were divided into three groups by curvature including 10 canals each group. Canals were prepared using stainless steel K-type files by the step-back technique. Then all the samples were scanned by Micro-CT before, in and after instrumentation. The extent of apical transportation were calculated. Results Statistical differences in apical tran... |
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| Keywords: | Micro-CT |
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