TY - JOUR TT - Comparison of the accuracies of multi-frequency electronic apex locators in teeth with enlarged apical foramina: ex vivo AU - Ekici, Mügem Aslı AU - Helvacıoğlu Kıvanç, Bağdagül AU - Ekici, Adil PY - 2017 DA - November DO - 10.17214/gaziaot.315396 JF - Acta Odontologica Turcica JO - Acta Odontol Turc PB - Gazi University WT - DergiPark SN - 2147-690X SP - 17 EP - 22 VL - 35 IS - 1 KW - Apikal foramen KW - dişler KW - kök kanal tedavisi N2 - Objective: The aim of this study was to compare the accuracyof a newly developed multi-frequency electronic apex locator iPex II with threedifferent multi-frequency electronic apex locators in teeth with differentsizes of apical foramina.Materials and Method: Twenty-six extracted mandibularpremolars were used in this study. The teeth were decoronated, and the rootcanals were coronally flared. Actual working length was determined by insertinga #15 K-file until the tip was visualized just within apical foramen. Actualworking length was established 0.5 mm short of the distance between the rubber stopper andthe file tip. Using Protaper F1, F2 and F3 files (Dentsply Maillefer),over-instrumentation 1 mmbeyond the apical foramen was done. The teeth were embedded in teflon moldswith alginate exposing the coronal 5 mm. Electronic working length measurements were done byusing Raypex 5 (VDW), Raypex 6 (VDW), iPex (NSK Inc.) and iPex II (NSK Inc.)electronic apex locators. Differences between the electronic and actual workinglengths were calculated. One-way analysis of variance (ANOVA) was used for thestatistical analysis of the accuracies of the electronic apex locators (α=0.05).Results: Inter-group comparisons revealed thatthere was no statistically significant difference between the accuracies of thedifferent electronic apex locators (p>0.05). 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