The forameter, a device for the exact measurement of the root canal length
Kremers, L.; Lampert, F.
Deutsche Zahnarztliche Zeitschrift 32(11): 905-907
1977
ISSN/ISBN: 0012-1029 PMID: 270403 Document Number: 122304
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.