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

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 mi...

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Bibliographic Details
Published in:Australian endodontic journal 2018-12, Vol.44 (3), p.251-254
Main Authors: Orosco, Fernando A., Silva, Guilherme F., Weckwerth, Paulo H., Lopes, Maria Thereza M., Garcia, Alan M. R., Duarte, Marco Antônio H., Moraes, Ivaldo G.
Format: Article
Language:English
Subjects:
Accuracy
Apexification - instrumentation
Apexification - methods
apical foramen
Dental Instruments
Dentistry
electronic apex locator
Endodontics
Humans
Incisor - surgery
Incisors
Mandible
Root Canal Therapy - instrumentation
Root Canal Therapy - methods
Root canals
root length determination
Sampling Studies
Sensitivity and Specificity
Statistical analysis
Tooth Extraction
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Summary: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.
ISSN:1329-1947
1747-4477
DOI:10.1111/aej.12235