3种镍钛根备系统在C形根管预备中的应用比较  

Comparison of Three Nickel-titanium File Systems for C-shaped Root Canal Preparation

作　　者：胡晓聪[1] 常新[1] 池珩[1] 刘晓燕[1] 

机构地区：[1]深圳市宝安区人民医院口腔科,广东深圳518101

出　　处：《南昌大学学报（医学版）》2011年第5期20-23,共4页Journal of Nanchang University：Medical Sciences

基　　金：深圳市科技计划(200903184)

摘　　要：目的研究比较ProTaper、Mtwo、Hero642三种常用的镍钛根备系统预备C形根管的效果。方法选取下颌第二磨牙需牙髓治疗的C形融合根患者40例(40个根管),按随机数字表法分为分为4组,A组10个根管应用手用不锈钢K锉采用逐步后退法预备根管;B组10个根管采用ProTaper镍钛器械逐步深入法;C组10个根管采用Mtwo镍钛锉改良步退法;D组10个根管采用Hero642镍钛锉逐步深入法;4组根管预备后均采用侧压法根管充填。观察4组根管预备所需时间和根管充填效果及根管充填后的反应。结果 A、B、C和D组根管预备时间分别为(12.30±2.23)、(5.81±0.95)、(6.13±1.12)和(5.91±1.01)min;B、C、D组所用时间差异无统计学意义(P>0.05),A组所用时间明显多于B、C、D各组,差异有统计学意义。A、B、C、D组根充质量根管恰充率都为80%。B、C、D组根管充填疼痛反应发生率都为10%,A组根管预备后疼痛反应发生率为30%,与B、C、D组比较疼痛反应发生率要高(P<0.05)。结论非ISO的镍钛机动锉在下颌第二磨牙C形根管预备中有着操作简便、省时省力、成形性好、安全性好、效率高、实用性强等特点,是临床上对下颌第二磨牙C形根管进行预备的有效工具。Objective To compare the effectiveness of three different nickel-titanium file systems（ProTaper,Mtwo and Hero642） in C-shaped root canal preparation.Methods Forty C-shaped root canals in 40 mandibular second molars were randomly divided into four groups of 10 specimens each.Root canals in group A,B,C and D were prepared by hand stainless steel K files,ProTaper nickel-titanium instruments,Mtwo nickel-titanium instruments and Hero642 nickel-titanium instruments,respectively.The canals were filled using lateral condensation technique.The time for root canal preparation,effectiveness of root canal obturation,and reaction following root canal obturation were observed.Results The time for root canal preparation was（12.30±2.23）,（5.81±0.95）,（6.13±1.12） and（5.91±1.01） minutes in group A,B,C and D,respectively.The rate of pain reaction was 30%,10%,10% and 10% in group A,B,C and D,respectively.The proper filling rate was 80% for all four groups.Compared with group A,the time for root canal preparation and proper filling rate significantly decreased in group B,C and D（P〈0.05）.Conclusion Non-ISO nickel-titanium rotary files are effective for preparation of C-shaped root canals in mandibular second molars with advantages of simple operation,saving time,good formability and safety,and high efficiency and practicality.

关 键 词：C形根管 根管预备 镍钛根备 

分 类 号：R781.33[医药卫生—口腔医学]