title: [The forameter, a device for the exact measurement of the root canal length].
abstract: The forameter is an instrument used for measuring the length of the root canal. Here the use of the principle of resistance measurement is refined. The position of the apical foramen is shown acoustically as well as visually. This investigation gives positive results for the measurements in the treatment of devitalised teeth. The inaccuracy of measurement in living teeth appears too great.
mesh_terms: D002508:Cephalometry / Q000295:instrumentation*; D003786:Dental Pulp Cavity / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D004568:Electrodiagnosis; D006801:Humans; D009811:Odontometry / Q000295:instrumentation*; D011859:Radiography
vernacular_title: Der Forameter, ein Hilfsmittal zur exakten Längenbestimmung des Wurzelkanals?