Accuracies of seven different apex locators under various conditions

Objectives The purpose of this study was to evaluate the accuracies of 7 different frequency-dependent electronic apex locators (EALs) on using different irrigants in the root canal. Study design Root canal lengths were measured with 7 different EALs in 40 extracted human teeth embedded in an algina...

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Published in:Oral surgery, oral medicine, oral pathology, oral radiology and endodontics oral medicine, oral pathology, oral radiology and endodontics, 2008-10, Vol.106 (4), p.e57-e62
Main Authors: Kang, Jung-A., DDS, MS, Kim, Sung Kyo, DDS, PhD
Format: Article
Language:English
Subjects:
Analysis of Variance
Chlorhexidine
Dental Pulp Cavity - anatomy & histology
Dentistry
Edetic Acid
Electric Impedance
Humans
Odontometry - instrumentation
Root Canal Irrigants
Sodium Chloride
Sodium Hypochlorite
Statistics, Nonparametric
Surgery
Tooth Apex - anatomy & histology
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Summary:Objectives The purpose of this study was to evaluate the accuracies of 7 different frequency-dependent electronic apex locators (EALs) on using different irrigants in the root canal. Study design Root canal lengths were measured with 7 different EALs in 40 extracted human teeth embedded in an alginate model after canal preparation and compared with the actual canal length measurements taken before embedding the teeth in alginate. The EALs used were Apex Finder 7005, Apit, Bingo-1020, e-Magic Finder, ProPex, Root ZX, and SmarPex. Measurements were taken with the canal dry, and saturated sequentially with 5.25% NaOCl, saline, 0.1% chlorhexidine, and 15% EDTA. Data were analyzed with 1-way ANOVA and Tukey's studentized range test. Results There were some differences in accuracies among EALs; however, some of the differences were not statistically significant. All EALs were less accurate when the apical foramen size was larger. Conclusion Within the limitations of the present study, most of the EALs tested can be considered reliable in the presence of various root canal irrigants and varying sizes of the apical foramen.
ISSN:1079-2104
1528-395X
DOI:10.1016/j.tripleo.2008.04.001