手用ProTaper镍钛器械在磨牙根管治疗中的应用  

Applied research of hand ProTaper Niti instruments in root canal therapy of molars

作　　者：王莹[1] 林江红[1] 万敏[1] 王靖萧[1] 张金华[1] 诸海敏[1] 

机构地区：[1]温州医学院第一附属医院口腔科,浙江温州325000

出　　处：《温州医学院学报》2006年第5期454-457,共4页Journal of Wenzhou Medical College

摘　　要：目的:评价手用ProTaper镍钛器械预备磨牙根管的临床疗效。方法:选取需进行根管治疗的80颗患有牙髓炎或根尖周炎的磨牙,随机分为两组,A组:使用手用ProTaper镍钛器械,以冠根向深入法预备根管;B组:使用手用不锈钢扩大锉(K-file),以逐步后退法预备根管。两组均使用侧压充填法充填根管。记录根管预备时间、器械折断数量及工作长度变化,根据术前、术中、术后的X线片评价根管预备和充填的效果。结果:A组平均单根管预备时间较B组短,两组差异有统计学意义(P<0.05);A组有一枚S1析断,B组有8枚8#到15#锉尖变形;A组预备根管后工作长度基本无变化,B组平均减少(1.41±0.93)mm(P<0.01);A组预备后根管锥度,流畅度较好,术后疼痛发生少,且程度轻,差异有显著性(P<0.05)结论:手用Pro Taper镍钛器械与传统不锈钢K锉相比可明显提高预备质量,尤其适于弯曲根管的预备,是值得推广的新型手用根管预备技术。Objective： To evaluate clinical effects of hand ProTaper nickel-titanium （Niti） instruments in root canal preparation of molars. Methods：Eighty molars with pulpitis or perioapical periodontitis were randomly classified into two groups with 40 teeth in each group. Root canal preparation was carried out with hand ProTaper and Crown-down technique in Group A, while preparation with ss-k-file and step-back technique in Group B. Preparation time, the number of broken instruments and the change of WL were recorded. The efficiency of preparation and obturation was analyzed with radiograph before, during and after operation. Results：The preparation time of Group A was shorter than that of group B（P〈0.05）. One S1 was broken in Group A, while 8 pieces of ss-K-file were distorted in Group B.The WL of Group B reduced by（1.41±0.93）mmwhereas there was almost no change in Group A（P〈0.01）. Hand ProTaper could achieve more continuosly tapered root canal shape and less pain after operation than that of ss-K-file（P〈0.05）. Conclusion：Hand ProTaper instruments can be advocated as a new hand instrumen-tation technique, especially for those curve root canal of molars.

关 键 词：手用PROTAPER 根管预备 镍钛 磨牙 

分 类 号：R446[医药卫生—诊断学] R561.3[医药卫生—临床医学]