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首页> 外文期刊>RGO - Revista Gaúcha de Odontologia >Performance in vitro of apex locators in determining root length in primary molars
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Performance in vitro of apex locators in determining root length in primary molars

机译：根尖定位仪在体外测定初级磨牙根长的性能

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Objective: The aim of the study was to evaluate performance of digital radiographic and two electronic apex locators, Propex II and Root ZX in root canal length determination in primary molars. Methods: 25 primary molars were divided into two groups, G1 without root resorption and G2 with root resorption. The exams were performed using all methods by two experienced examiners, with 1-week interval. The gold standard was determined by visual examination. The methods were statistically analyzed regarding the values of reproducibility and correlated with the gold standard by Pearson?′s correlation coefficient. Results: The root canal length determination coincided with gold standard in 22.7% for Root ZX, 17.5% for Propex II and 12.5% for digital radiography. Correlation values were higher in G1, the Root ZX presented the highest values. In G2 the digital radiography showed the lowest correlation. In G1, the intra-examiner reproducibility values ranged from 0.925 to 0.523, and interexaminer 0.863 to 0.670. In G2, the values of intra-examiner reproducibility ranges from 0.864 to 0.097, and inter was 0.774 to 0.379. Conclusion: It was concluded that the methods performance varying according to examiner's experience. The Root ZX presented the highest reproducibility and accuracy.
机译：目的：本研究的目的是评估数字X线照相和两个电子根尖定位器（Propex II和Root ZX）在磨牙根管长度测定中的性能。方法：将25个初级磨牙分为两组，G1不带根吸收，G2带根吸收。考试由两名经验丰富的考官使用所有方法进行，每隔1周进行一次。金标准通过目测确定。对这些方法的可重复性值进行统计分析，并通过Pearson？相关系数将其与金标准品相关联。结果：根管长度的测定与Root ZX的金标准相符，分别为22.7％，Propex II的17.5％和数字放射成像的12.5％。 G1中的相关值较高，Root ZX呈现最高值。在G2中，数字射线照相显示出最低的相关性。在G1中，检查者内可重复性值介于0.925至0.523之间，而检查者间可重复性值介于0.863至0.670之间。在G2中，检查者内部可重复性的值介于0.864至0.097之间，而inter为0.774至0.379。结论：结论是，方法的性能根据检查者的经验而变化。 Root ZX具有最高的可重复性和准确性。

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