摘要
目的对比研究3种旋转镍钛器械ProFile、ProTaper和Mtwo在弯曲根管预备中的应用。方法选择2008年2月至2010年2月在沈阳市口腔医院牙体牙髓病科就诊的69例有弯曲根管的牙髓炎或根尖周炎患者的72颗患牙,随机分为4组,分别采用ProFile、ProTaper、Mtwo和不锈钢K锉预备根管,侧方加压法充填。评价根管预备和充填的效果。结果 3种旋转镍钛器械均能较好地维持根管的弯曲度及走向,根管的锥度及流畅度佳,无根管偏移、台阶形成等并发症;术后疼痛少且程度轻;ProTaper和Mtwo的操作时间比ProFile短。结论机用镍钛器械ProFile、ProTaper和Mtwo预备弯曲根管成形效果好,ProTaper和Mtwo比ProFile更快速高效;临床操作须注意预防器械折断。
Objective To study the clinical application of Nickel-titanium（NiTi） rotary instruments,namely ProFile,ProTaper and Mtwo,to preparation of curved root canals.Methods A total of 72 teeth with curved root canals were prepared by ProFile,ProTaper and Mtwo rotary instruments in test groups and by stainless steel K files in control group.All teeth were obturated with lateral condensation technique.The efficiency of preparation and obturation was analyzed.Results Three NiTi rotary instruments could keep the curvature and flow of cured canals very well,and the continuously tapered root canal shape was achieved.There were no transportation and ledge in all test groups.The operative time was shorter for ProTaper and Mtwo than ProFile.Conclusion With the NiTi rotary instruments,ProFile,ProTaper and Mtwo,curved root canals can be prepared effectively and quickly.Meanwhile,the problem of instrument fracture should be prevented.
出处
《中国实用口腔科杂志》
CAS
2010年第7期425-426,428,共3页
Chinese Journal of Practical Stomatology
关键词
弯曲根管
镍钛器械
根管预备
器械折断
curved root canals
nickel-titanium instruments
root canal preparation
instrument fracture
