[New electric techniques for root canal length measurement].
Reliable measurements of electrical resistance have recently been shown to be inaccurate for root canal length determination. By contrast, measuring differences in impedance allows impedance gradients to be recorded unaffected by electrode phenomena. Although technical problems concerning the application of the impedance gradient method have not yet been solved, mathematical, experimental and clinical findings show that root canal lengths can be reliably determined by this electrophysical method.
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Poliklinik für Zahnerhaltung und Parodontologie der Universität Erlangen-Nurnberg.
D003786:Dental Pulp Cavity / Q000033:anatomy & histology*; D004553:Electric Conductivity; D006801:Humans; D008954:Models, Biological; D009811:Odontometry / Q000379:methods*; D014092:Tooth Root / Q000033:anatomy & histology*
Neue elektrische Messverfahren zur Langenbestimmung des Wurzelkanals.