title: The effects of sodium hypochlorite concentrations on the accuracy of an apex locating device.
abstract: This study aimed to evaluate Root ZX accuracy with different NaOCl concentrations and to observe effects of the alginate model when NaOCl was used in the canal during electronic measurements. Fifty extracted single-rooted, single-canal human teeth were used in five experimental groups. NaOCl concentrations of 5.25%, 2.65%, 1.00%, and 0.50%, respectively, were injected into the root canals of teeth in four groups and distilled water in control group 5. After measuring root lengths with Root ZX, the files were locked in place. There were no statistically significant differences among all the groups (p > 0.95) when evaluating the distance of the file tips and apical constriction or for the distance from file tip to apical foramen. Root ZX could be used in root canal length measurements with various NaOCl concentrations. Designation of apical constriction needs more care. The alginate model could be used for in vitro electronic measurements with various NaOCl concentrations.
authors.affiliation: Department of Operative Dentistry and Endodontics, Gazi University Faculty of Dentistry, Emek, Ankara, Turkey.
authors.forename: A Cemal
authors.initials: AC
authors.lastname: Tinaz
authors.forename: L Sibel
authors.initials: LS
authors.lastname: Sevimli
authors.forename: Güliz
authors.initials: G
authors.lastname: Görgül
authors.forename: Emin G
authors.initials: EG
authors.lastname: Türköz
mesh_terms: D000464:Alginates; D000704:Analysis of Variance; D003786:Dental Pulp Cavity / Q000033:anatomy & histology*; D006801:Humans; D003765:Models, Dental; D009811:Odontometry / Q000295:instrumentation*; D015203:Reproducibility of Results; D012388:Root Canal Irrigants / Q000008:administration & dosage*; D012973:Sodium Hypochlorite / Q000008:administration & dosage*; D019227:Tooth Apex / Q000033:anatomy & histology*
chemical_list: D000464:Alginates; D012388:Root Canal Irrigants; D012973:Sodium Hypochlorite