A clinical study of posterior teeth root canal working length measured by electronic apex locator

根管 长度电测仪测定后牙根管 工作 长度的临床研究

Objective : To evaluate the correlation factors on the accuracy of determining root canal working length by electronic measurement in vivo .

目的：评价患者年龄、患牙牙位、冠根状态等相关因素对根 管 长度电测法测定根管 长度准确性的影响。

Clinical study on the accuracy of working length determination on molars of old people by root canal apex locator

根管治疗仪测定老年人磨牙根管 工作 长度准确性的初步研究

The traditional method is that the dentist confirm the canal working length according to his feeling of the hand when detecting the root canals the patients sense of pain and X - ray radiographs ;

传统法根据医生探测根管时的手感、患者的疼痛感和拍X光片来确定根管 工作 长度，根测仪法采用日本JUSTY-Ⅱ根测仪来确定根管 工作 长度。

The working length was determined with the X-ray film .

疏通 根 管，并拍X线片确定是否达 工作 长度。

I was not qualified to be trained as a BEC examiner due to the insufficient working length at SYSU for my teaching experience here was less than three years .

因为当时在中大 工作不满三年不能去培训为 考官，反而，报名成了BEC高级的考生。

Conclusions Electronic apex locator is a convenient and accurate device in determination of canal working length .

结论根管长度电测法是一种准确度高、操作简便且实用的确定根管 工作 长度的方法。

A study of triple-united method for determining root canal working length

三联法测量根管 工作 长度的研究

Compared group 98 cases with 170 roots applying teeth X ray testing the root working length undertake root preparing and filling up and took X ray after operation .

对照组98颗牙共170个根管，用X牙片法确定根管的 工作 长度，进行根管预备和充填，术后拍片。

Evaluation on the quality of root canal obturation and on accuracy of electronic apex locator for determining root canal working length

电子根尖定位仪测量根管 工作 长度准确性及根管充填质量的评价

Objective To test the accuracy of electronic apex locator in determining working length of anterior teeth using ODIS system .

目的用口腔数字成像系统（ODIS）检验根管长度测量仪在测定前牙根管 工作 长度时的准确性及实用性。

Objective : To investigate the clinical effect of Root ZX electronic apex locator in measuring posterior teeth root canal working length .

目的：探讨rootzx根管长度电测仪测量后牙根管 工作 长度的临床效果。

CONCLUSION : ProPex is relatively accurate in molar working length measurement .

结论：ProPex可以比较准确地测量磨牙牙齿 操作 长度。

Results The standard working length was obtained in 95 % teeth with electronic apex locator .

结果根管长度测量仪测定的结果95%为标准 长度。

Objective To discuss the reliability of the method of measuring working length of the upper front teeth by finger-feeling .

目的探讨指感法在测量上前牙牙体 操作 长度的准确度。

The experiment group for 102 cases with 180 roots applying root length surveyor test its working length undertake root preparing and filling up took X ray after operation ;

实验组102颗牙180个根管，用根管长度测量仪测量其 工作 长度，进行根管预备和充填，术后拍片；

Conclusions : In terms of working length determination on molars of old people TRI AUTO ZX root canal apex locator has greater accuracy than touching sensitivity and has the same effect with X ray method .

结论：根管治疗仪在老年人根管治疗中，对磨牙根管 工作 长度的测定方面，比手感法有更高的准确率，与X线片法可取得同样的效果。

The correlation factors on the accuracy of electronic measurement for root canal working length : A clinical study

根管 长度电 测法相关性因素的临床研究

Skewed Slot Wheeled Seeding Mechanism Working Length Comparative Trial Research

斜槽轮式排种器 工作 长度的对比试验

Results : For group A 74.7 % of root canals had a longer working length after preparation than before while for group B there was no significant difference .

结果：A组，有74.7%根管在预备后 工作 长度超过预备前。B组，预备前后无明显差别。

The changes of working length after root preparation between the three groups are no significant different ( P0.05 ) .

3组器械根管预备后根管 工作 长度的改变无统计学意义（P0.05）。

The experiments results shows through adjust the die working length control extrusion temperature and speed which can valid reduce coarse grain structure .

结果表明，通过调整模具 工作带 长度、控制挤压温度和挤压速度，可以减少粗晶组织的产生。

Objective : To evaluate the accuracy and influence factors of a triple-united method used for the determination of root canal working length .

目的：研究三联法（手感法、牙平均 长度法和X线片法）测量根管 工作 长度的准确性及影响因素。

Objective : To observe the accuracy of electronic method ( EM ) handing method ( HM ) and X-raying method ( X-RM ) in measuring root canal working length .

目的：比较电测法、手感法和拍片法测定根管 工作 长度的精确性。

Evaluation of the apex locator for determining the accuracy of working length of the root canal

根管测量仪测定根管 工作 长度的准确性评价

Working length of the canals ;

根管 工作 长度；

Accuracy of three methods of determining the working length of root canal

三种测量根管 工作 长度方法准确性的评价研究

All nurses were divided into two groups according their working length ( 5a as the divide ) .

根据护士的护龄分为： <5a组和≥5a组。

EAL can measure the working length accurately at the reading Apex in every age group .

根管 长度电测仪所测“Apex”处读数可以作为各年龄组准确测量根管 工作 长度的参考读数。