title: Influence of Blood on the Accuracy of Raypex 5 and Root ZX Electronic Foramen Locators: An In Vivo Study.
abstract: The aim of this study was to evaluate in vivo the accuracy of the Raypex 5 and Root ZX electronic foramen locators (EFLs) in the presence of blood in the root canal space. Forty single-canal teeth scheduled for extraction were selected. Access cavity was prepared and coronal enlargement was carried out. Approximately two drops of blood were collected by finger prick and injected into the root canal space. The electronic working length (EWL) of each tooth by each device was established twice before (NB group) and after (WB group) injecting blood into the root canal. The tooth was extracted and the actual working length (AWL) was determined. Data were analyzed using McNemar's test. The accuracy rates of Raypex 5 and Root ZX within 0.5 mm in the NB group were 88.9% and 91.5%, with 83.3% and 86.2% in the WB group, respectively. There were no significant differences between the accuracy of each EFL in the two groups (p>0.05). Considering the NB and WB groups, there were no statistically significant differences in the accuracy of the EFLs (p>0.05). The presence of blood in the root canal space did not influence the accuracy of the EFLs.
authors.affiliation: Torabinejad Dental Research Center, Department of Endodontics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran, Isfahan University of Medical Sciences, Torabinejad Dental Research Center, Department of Endodontics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan , Iran.
authors.forename: Masoud
authors.initials: M
authors.lastname: Saatchi
authors.affiliation: Torabinejad Dental Research Center, Department of Endodontics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran, Isfahan University of Medical Sciences, Torabinejad Dental Research Center, Department of Endodontics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan , Iran.
authors.forename: Mohammad Ghasem
authors.initials: MG
authors.lastname: Aminozarbian
authors.affiliation: Private practice, Isfahan University of Medical Sciences, Isfahan, Iran, Isfahan University of Medical Sciences, Private practice, Isfahan University of Medical Sciences, Isfahan , Iran.
authors.forename: Hamid
authors.initials: H
authors.lastname: Noormohammadi
authors.affiliation: Department of Endodontics, School of Dentistry, Rafsanjan University of Medical Sciences, Rafsanjan, Iran, Rafsanjan University of Medical Sciences, Department of Endodontics, School of Dentistry, Rafsanjan University of Medical Sciences, Rafsanjan , Iran.
authors.forename: Badri
authors.initials: B
authors.lastname: Baghaei
mesh_terms: D000328:Adult; D001769:Blood; D006801:Humans; D066298:In Vitro Techniques; D008875:Middle Aged; D009811:Odontometry / Q000295:instrumentation*; D015203:Reproducibility of Results; D014092:Tooth Root