Influence of different sized files on the accuracy of two electronic apex locators.

Autor: Orosco FA; Pro-Rectory of Research and Post Graduation, Universidade do Sagrado Coração, Bauru, Brazil., da Silva GF; Pro-Rectory of Research and Post Graduation, Universidade do Sagrado Coração, Bauru, Brazil., Weckwerth PH; Pro-Rectory of Research and Post Graduation, Universidade do Sagrado Coração, Bauru, Brazil., Lopes MTM; Pro-Rectory of Research and Post Graduation, Universidade do Sagrado Coração, Bauru, Brazil., Garcia AMR; Pro-Rectory of Research and Post Graduation, Universidade do Sagrado Coração, Bauru, Brazil., Duarte MAH; Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil., de Moraes IG; Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil.
Jazyk: angličtina
Zdroj: Australian endodontic journal : the journal of the Australian Society of Endodontology Inc [Aust Endod J] 2018 Dec; Vol. 44 (3), pp. 251-254. Date of Electronic Publication: 2017 Sep 20.
DOI: 10.1111/aej.12235
Abstrakt: 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.
(© 2017 Australian Society of Endodontology Inc.)
Databáze: MEDLINE
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