1) curved root canal
弯曲根管
1.
Application of hand ProTaper in combination with nikel-titanium alloy k-file in endodontic treatment of curved root canals;
手动ProTaper根管扩大系统联合镍钛K锉在弯曲根管治疗术中的应用
2.
Evaluation of shaping ability of ProTaper NiTi-hand files in simulated curved root canals;
手用ProTaper对弯曲根管成形能力评价的研究
3.
Experimental study of root canal deviation during instrumentation of the curved root canals;
预备弯曲根管时根管偏移的实验研究
2) Curved canal
弯曲根管
1.
Comparison of NiTi and stainless-steel spreaders penetration in curved canals;
两种侧方加压器进入弯曲根管深度的实验研究
2.
Comparison of canal deviation during preparation by three kinds of instruments in curved canals in vitro;
三种不同器械预备弯曲根管时根管偏移的实验研究
3.
Comparison of transportation incidence in curved canals using the stainless steel K file and nickel titanium K file;
不锈钢K锉和镍钛K锉预备弯曲根管效果的比较研究
3) curved root canals
弯曲根管
1.
Method:164 teeth with curved root canals were instrumented by step back or step down technique with Hero 642 or stainless steel Kfiles.
目的:比较研究机用镍钛器械Hero642根管预备系统对弯曲根管采用不同预备方法的临床效果。
2.
Objective This research aimed to study and assess clinical application of the using of three Nick el-titanium (NiTi) rotary instruments, namely ProFile, ProTaper and Hero 642, in preparation of curved root canals.
目的研究机用镍钛器械ProFile、ProTaper和Hero642在弯曲根管预备中的临床应用。
3.
Mechanisms of complications occurring and factors which influence the preparation of curved root canals were analyzed; several common-used techniques and methods were introduced for the preparation of curved root canals.
分析了弯曲根管预备过程中并发症的发生机制和影响弯曲根管预备的因素,介绍了目前用于弯曲根管预备的几种常用技术和方法。
4) root canal curvature
根管弯曲
1.
Mathematical analysis of the accuracy of Schfer s method in measuring the radius of root canal curvature;
Schfer法测量根管弯曲半径准确性的探讨
2.
Geometrical analysis in measurements of root canal curvature;
根管弯曲度测量法的几何原理剖析
5) Root canal curvature
根管弯曲度
1.
Root canal curvature of anterior teeth in the Han nationality in Shaanxi province;
关中地区汉族成人前牙根管弯曲度调查
2.
Study on the Reliability of Two Methods for Measurement of Root Canal Curvatures;
两种根管弯曲度测量方法的比较研究
3.
Survey of root canal curvature of anterior teeth from Chuang population
壮族人群恒前牙根管弯曲度测定
6) radius of canal curvature
根管弯曲半径
补充资料：弯曲工艺的概念及弯曲件
1．弯曲工艺：是根据零件形状的需要，通过模具和压力机把毛坯弯成一定角度，一定形状工件的冲压工艺方法。
2．弯曲成形工艺在工业生产中的应用：应用相当广泛，如汽车上很多履盖件，小汽车的柜架构件，摩托车上把柄，脚支架，单车上的支架构件，把柄，小的如门扣，夹子（铁夹）等。
弯曲的基本原理：以V形板料弯曲件的弯曲变形为例进行说明。其过程为：
1． 凸模运动接触板料（毛坯）由于凸,凹模不同的接触点力作用而产生弯矩， 在弯矩作用下发生弹性变形，产生弯曲。
2． 随着凸模继续下行，毛坯与凹模表面逐渐靠近接触，使弯曲半径及弯曲力臂均随之减少，毛坯与凹模接触点由凹模两肩移到凹模两斜面上。（塑变开始阶段）。
3．随着凸模的继续下行，毛坯两端接触凸模斜面开始弯曲。（回弯曲阶段）。
4．压平阶段，随着凸凹模间的间隙不断变小，板料在凸凹模间被压平。
5． 校正阶段，当行程终了，对板料进行校正，使其圆角直边与凸模全部贴合而成所需的形状。
弯曲变形的特点： 弯曲变形的特点是：板料在弯曲变形区内的曲率发生变化，即
弯 曲半径发生变化。从弯曲断面可划分为三个区：拉伸区、压缩区和中性层。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条