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Evaluating Electromagnetic Interference of Communication Devices with Root ZX Mini Apex Locator

机译：使用Root ZX Mini Apex定位器评估通信设备的电磁干扰

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Introduction: The correct determination of working length is a critical factor in the success of endodontic treatment. Nowadays, the electronic apex locators (EALs) is more used because of their ease of use, high accuracy, and the uncertainty of other methods. Because EALs use the electronic method, it is likely that electromagnetic waves (EMWs) affect their performance. This study aims to investigate the possibility of this interference. Materials and Methods: The visual canal length (CL) of 12 maxillary incisors (Vertucci’s type I) was measured with a K-file and magnifying glass. Root ZX mini apex locator is used to measure CL in the absence/presence of EMWs in both the second (2G) and third generations (3G) of mobile communication network at the mode of ringing and conversation at direct contact and the distances of 25 and 50?cm. Results: The mean CL at presence of EMWs in all conditions and distances (by removing the conversation with 2G at direct contact group) were not significantly difference with CL and EAL and absence of investigated EMWs group (Repeated-Measures Analysis of Variance (ANOVA), P?=?0.083). The indicator of EAL were unstable on apex sign at least 5 seconds for 5 teeth (41.7% of samples) in conversation with 2G at the direct contact group. Conclusion: EMWs of 2G and 3G not causes malfunctions of the Root ZX mini apex locator except conversation with 2G at the direct contact.
机译：简介：正确确定工作长度是牙髓治疗成功的关键因素。如今，由于使用方便，准确性高以及其他方法的不确定性，电子顶点定位器（EAL）越来越多地被使用。因为EAL使用电子方法，所以电磁波（EMW）可能会影响其性能。这项研究旨在调查这种干扰的可能性。材料和方法：用K型锉刀和放大镜测量12颗上颌切牙（Vertucci的I型）的视道长度（CL）。 Root ZX微型顶点定位器用于在移动通讯网络的第二代（2G）和第三代（3G）中以直接接触的振铃和会话模式以及距离为25和20的情况下测量是否存在EMW时的CL 50？cm。结果：在所有条件和距离下均存在EMWs的平均CL（通过消除直接接触组与2G的对话）与CL和EAL以及未调查的EMWs组均无显着差异（重复方差分析（ANOVA） ，P≥0.083）。与直接接触组的2G交谈时，有5颗牙齿（占样本的41.7％）的EAL指标在先兆体征上至少不稳定5秒。结论：2G和3G的EMW不会引起Root ZX mini顶点定位器的故障，除非在直接接触时与2G进行对话。

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