Questionable method for determining root canal lengths
Voss, A.
Deutsche Zahnarztliche Zeitschrift 44(8): 606-609
1989
ISSN/ISBN: 0012-1029 PMID: 2639065 Document Number: 335173
Apart from radiographic methods, the use of electronic devices for determining root canal lengths is widespread. Based on physical considerations and simple in vitro tests the basic principles of endometry are discussed. Since the electrochemical processes at the electrodes are incalculable, the measured result is fortuitous. As an alternative to the radiographic determination of root canal lengths endometry must be rejected.