使用Mini Apex根管长度测定仪和Root ZX-II进行根管测量的准确性：一项体外评估。

The accuracy of root canal measurements using the Mini Apex Locator and Root ZX-II: an evaluation in vitro.

作者信息

D'Assunção Fábio Luiz Cunha, de Albuquerque Diana Santana, Salazar-Silva Juan Ramon, de Queiroz Ferreira Linalda Correia, Bezerra Priscila Medeiros

机构信息

Departament of Operative Dentistry and Endodontics, Universidade Federal da Paraíba, João Pessoa, Brazil.

出版信息

Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2007 Sep;104(3):e50-3. doi: 10.1016/j.tripleo.2007.03.025.

DOI:10.1016/j.tripleo.2007.03.025

PMID:17709069

Abstract

OBJECTIVE

The aim of this in vitro study was to compare the capacity of the Root ZX-II and Mini Apex Locator, electronic apex locators (EALS), to prevent overestimated working length.

STUDY DESIGN

Forty extracted human teeth were used for the study. The cervical portion of each canal was flared using Gates Glidden drills and the teeth were embedded in an alginate model. Canals were irrigated with 2.5% sodium hypochlorite. The actual length (AL) and electronic length (EL) measurements were made on each specimen separately with both devices with the aid of a k-type file.

RESULTS

The results obtained with each EAL were compared with the corresponding actual length. The statistical analysis of the results showed EAL reliability to prevent overestimated working length to be 100% for the Mini Apex Locator and 97.44% for the Root ZX-II, within a tolerance of +/-0.5 mm into account. A paired sample t test showed that there was no statistically significant difference between the accuracy of the devices (P = .5841).

CONCLUSION

The results of this study indicate that the Root ZX-II and Mini Apex Locator are accurate devices to prevent overestimated working length.

摘要

目的

本体外研究的目的是比较Root ZX-II和Mini Apex Locator这两种电子根尖定位仪（EAL）防止工作长度估计过高的能力。

研究设计

40颗拔除的人类牙齿用于该研究。使用Gates Glidden钻扩大每个根管的颈部部分，并将牙齿嵌入藻酸盐模型中。用2.5%的次氯酸钠冲洗根管。借助k型锉，分别用这两种设备对每个标本进行实际长度（AL）和电子长度（EL）测量。

结果

将每种EAL获得的结果与相应的实际长度进行比较。结果的统计分析表明，在考虑±0.5毫米公差的情况下，Mini Apex Locator防止工作长度估计过高的EAL可靠性为100%，Root ZX-II为97.44%。配对样本t检验表明，这两种设备的准确性之间没有统计学上的显著差异（P = 0.5841）。