| Literature DB >> 28940563 |
Fernando A Orosco1, Guilherme F da Silva1, Paulo H Weckwerth1, Maria Thereza M Lopes1, Alan M R Garcia1, Marco Antônio H Duarte2, Ivaldo G de Moraes2.
Abstract
The aim of this study was to evaluate the impact of different file sizes on the accuracy of two electronic apex locators (EALs). Thirty extracted human single-rooted permanent mandibular incisors were used. A #10 K-file was inserted in the root canal until its end could be observed (using a light microscope) through the apical foramen. One millimetre was subtracted to establish working length (WL). Electronic readings were performed using MiniApex Locator or Root ZX II, from #10 K-file to #130 K-file. Statistical analysis was performed by two-way anova and Tukey test (P ≤ 0.05). From #60 to #130 K-file, observed differences were noted between the values obtained with both EALs and WL (P ≤ 0.05). The MiniApex Locator showed increased means when measurements were made with #50 to #70 and with #120 (P = 0.008) and #130 (P = 0.005) K-files. File sizes influenced the accuracy of EALs - the greater the instrumentation size, the higher mean differences compared to WL.Entities:
Keywords: apical foramen; electronic apex locator; endodontics; root length determination
Mesh：
Year: 2017 PMID： 28940563 DOI： 10.1111/aej.12235
Source DB: PubMed Journal: Aust Endod J ISSN： 1329-1947 Impact factor: 1.659