title: [Study of properties of electrical root canal length measuring instruments].
abstract: Six electrical instruments for locating the apex during endodontic treatment were tested in a laboratory investigation about currency, frequency and scale. Further we looked, whether all instruments show coincidence in the apex point. There are great differences in currency, frequency and scale (apex point). The reproducibility and the precision of an apex locator--at the time--depends an many factors and thus indication seems to be very limited.
authors.affiliation: Poliklinik für Zahnerhaltung B der Westfälischen Wilhelms-Universität Münster.
authors.forename: K H
authors.initials: KH
authors.lastname: Ott
authors.forename: T
authors.initials: T
authors.lastname: Pioch
authors.forename: W
authors.initials: W
authors.lastname: Hoppe
mesh_terms: D003786:Dental Pulp Cavity / Q000033:anatomy & histology*; D004582:Electronics, Medical; D009811:Odontometry; D012390:Root Canal Therapy / Q000295:instrumentation*; D014092:Tooth Root / Q000033:anatomy & histology*
vernacular_title: Untersuchungen über Eigenschaften von elektrischen Wurzelkanal-Längenmessgeräten.