| 孟丹婕,蒋勇,姚莉莉,等.ProTaper、Mtwo、M3三种机用镍钛锉对磨牙根管预备工作长度的影响[J].安徽医药,2019,23(9):1800-1803. |
| ProTaper、Mtwo、M3三种机用镍钛锉对磨牙根管预备工作长度的影响 |
| Effect of ProTaper，Mtwo，M3 ni-tititanium file on the working length of preparation of root canal |
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| DOI：10.3969/j.issn.1009-6469.2019.09.025 |
| 中文关键词: 根管制备 磨牙工作长度 成形能力 ProTaper锉 Mtwo锉 M3锉 |
| 英文关键词: Root canal preparation Molar Working length Forming ability ProTaper nickel-titanium film Mtwo nickel-titanium film M3 nickel-titanium file |
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| 中文摘要: |
| 目的 评价ProTaper、Mtwo、M3三种机用镍钛器械对磨牙根管预备工作长度的影响。方法 2016年9月至2017年9月因牙髓或根尖周疾病在合肥市口腔医院就诊的病人，选择需行根管治疗的恒磨牙45例，将45例患牙采用随机数字表法分为三组，每组15牙，根管预备过程中分别使用机用镍钛器械ProTaper、Mtwo、M3进行根管预备，依据使用的镍钛器械不同分别记为PT组、MT组、M3组。其中PT组为49根管，MT组为52根管，M3组为47根管。对工作长度合格率及预备前后各组根管的工作长度变化进行对比分析。结果 器械预备根管后工作长度PT组1例不合格，MT组2例不合格，M3组1例不合格，三组合格率差异无统计学意义(P＞0.05)，不同预备器械对根管工作长度的影响均差异无统计学意义(P＞0.05)，预备前后各组根管工作长度变化的比较，均差异有统计学意义(P＜0.05)。结论 三组器械均能有效的成形根管且对根管工作长度的影响无差异，但预备后根管工作长度均产生变化，需要在临床治疗中重新确认工作长度。 |
| 英文摘要: |
| Objective To evaluate the influence of ProTaper，Mtwo，M3 nickel-titanium instruments on the working length in root canal preparation.Methods Forty-five molars with root canal therapy in Hefei Stomatological Hospital from September 2016 to September 2017were randomly assigned into three groups with 15 cases in each.The root canals were prepared by using ProTaper，Mtwo and M3 nickel-titanium instruments，which were denoted as PT group，MT group and M3 group respectively according to the nickel-titanium instruments.Among them，49 tubes in the PT group，52 tubes in the MT group，and 47 tubes in the M3 group.The qualified rate of working length and the working length of root canal before and after preparationwere compared and analyzed.Results The working length of the instrument after root canal preparation was unqualified in 1 case of PT group，2 cases of MT group and 1 case of M3 group.There was no significant difference between the three groups in the qualification rate of working length after root canal preparation(P＞0.05).There was no significant difference between the three groups in the effect of working length (P＞0.05).There was a significant difference in the changes of the working length before and after preparation (P＜0.05).Conclusion The three groups of instruments can effectively form root canal and have no effect on root canal working length，but the working length of root canal is all changed after preparation is necessary to reconfirm the working length in clinical treatment. |
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