不同镍钛系统结合触控启动技术预备模拟弯曲根管的成形效果研究  

Shaping ability of four different NiTi rotary systems with tactile controlled activation technique in simulated curved canals

作　　者：曾凯密 韦曦[2] 黄湘雅[2] 伍婉翠[3] Zeng Kaimi;Wei Xi;Huang Xiangya;Wu Wancui(Stomatological Hospital,Southern Medical University,Guangzhou 510280,China;Hospital of Stomatology,Guanghua School of Stomatology,Sun Yat-sen University,Guangdong Provincal Key Laboratory of Stomatology,Guangzhou 510055,China;Department of Stomatology,The Second Affiliated Hospital of Guangzhou Medical University,Guangzhou 510260,China)

机构地区：[1]南方医科大学口腔医院,广州510280 [2]中山大学附属口腔医院,光华口腔医学院,广东省口腔医学重点实验室,广州510055 [3]广州医科大学附属第二医院口腔科,510260

出　　处：《中华口腔医学研究杂志（电子版）》2021年第1期6-12,共7页Chinese Journal of Stomatological Research(Electronic Edition)

基　　金：广州市卫生计生科技一般引导项目(20181A011065)。

摘　　要：目的评价HyFlex CM(HF)、TFA、Vortex Blue(VB)和Mtwo共4种镍钛系统结合触控启动(TCA)技术和传统技术(TT)预备模拟弯曲根管的成形效果。方法将96个模拟弯曲根管按照预备器械HF、TFA、VB、Mtwo采用随机数字表法分为4个大组(每组24个),每个大组再按照预备技术(TT或TCA)采用随机数字表法分为2个亚组(每组12个)。各组采用对应镍钛系统及技术预备根管。体视显微镜拍照记录预备前及预备后根管图像。AutoCAD、Adobe Photoshop CS5及Image J软件对预备前、后根管图像进行处理,测量距根尖每隔1 mm处的根管内外侧壁预备量,共测量11个位点,按照距根尖孔距离依次编号为D0~D10,计算各位点根管偏移量。采用两独立样本t检验分析比较各镍钛系统两种预备技术的根管偏移情况,采用单因素方差分析(One-Way ANOVA)比较同一预备技术下4种镍钛系统根管偏移情况,并采用Bonferroni法进行两两比较。结果与TT法相比,采用TCA法显著减小了HF在D0~D2位点(t_(D0)=2.701,P_(D0)=0.013;t_(D1)=3.497,P_(D1)=0.002;t_(D2)=2.731,P_(D2)=0.012),TFA在D2、D5和D6位点(t_(D2)=2.303,P_(D2)=0.031;t_(D5)=4.500,P_(D5)<0.001;t_(D6)=2.102,P_(D6)=0.047),VB在D6、D7和D10位点(t_(D6)=3.562,P_(D6)=0.002;t_(D7)=3.589,PD7=0.002;t_(D10)=3.004,P_(D10)=0.007)和Mtwo在D4~D6、D10位点(t_(D4)=4.668,P_(D4)<0.001;t_(D5)=5.645,P_(D5)<0.001;t_(D6)=3.627,P_(D6)=0.001;t_(D10)=5.778,P_(D10)<0.001)的根管偏移。对4种镍钛系统成形能力进行比较,不同预备技术下Mtwo在D3~D8位点的根管偏移量均显著大于其他3种镍钛系统(P<0.05);TT法中,VB在D6、D7位点的根管偏移量较HF和TFA大(P<0.05);TCA法中,VB在D4~D6位点的根管偏移量较HF和TFA大(P<0.05);TFA和HF组仅在TT法中的D1位点差异有统计学意义(P<0.05),其余位点差异均无统计学意义(P>0.05)。结论HF、TFA、VB和Mtwo结合TCA法预备弯曲根管具有良好的成形效果。Objective To evaluate the shaping ability of four NiTi rotary systems HyFlex CM(HF),TFA,Vortex Blue(VB)and Mtwo combined with Tactile Controlled Activation(TCA)technique or traditional technique(TT)when preparing simulated curved canals.Methods Ninety-six simulated curved canals were assigned to four groups(n=24 each)according to different NiTi rotary systems(HF,TFA,VB and Mtwo)using a random number table method.Each group was divided into two subgroups based on instrumentation technique(TT or TCA)(n=12 each).The simulated curved canals in each group were instrumented by using the corresponding rotary system and technique.Pre-and postoperative canal images were obtained using the stereoscopic microscope.AutoCAD,Adobe Photoshop CS5 and Image J were used for image processing.Eleven points were arranged in 1 mm steps from apex and numbered sequentially as D0-D10.The material removal from the inner and outer canal walls at each points were measured and canal transportation were calculated accordingly.The shaping ability of two techniques was analyzed using independent t-test.The shaping ability of four rotary systems was analyzed using One-Way ANOVA followed by Bonferroni test for a multiple comparison procedure.Results Compared with TT,TCA technique reduced root canal transportation caused by HF at D0-D2 points(t_(D0)=2.701,P_(D0)=0.013;t_(D1)=3.497,P_(D1)=0.002;t_(D2)=2.731,P_(D2)=0.012),TFA at D2,D5 and D6 points(t_(D2)=2.303,P_(D2)=0.031;t_(D5)=4.500,P_(D5)<0.001;t_(D6)=2.102,P_(D6)=0.047),VB at D6,D7 and D10 points(t_(D6)=3.562,P_(D6)=0.002;t_(D7)=3.589,PD7=0.002;t_(D10)=3.004,P_(D10)=0.007)and Mtwo at D4-D6 and D10 points(t_(D4)=4.668,P_(D4)<0.001;t_(D5)=5.645,P_(D5)<0.001;t_(D6)=3.627,P_(D6)=0.001;t_(D10)=5.778,P_(D10)<0.001).Comparing the shaping ability of four NiTi rotary systems combined with the same technique,the results showed that Mtwo produced more canal transportation at D3-D8 points than other three systems(P<0.05);VB produced more transportation at D6 and D7 points of TT group and at D4-D6 points o

关 键 词：根管制备 牙髓腔 弯曲 触控启动技术 成形能力 HyFlex CM TFA Vortex Blue Mtwo 

分 类 号：R781.05[医药卫生—口腔医学]