In vitro evaluation of an audiometric device in locating the apical foramen of teeth.
A new audiometric device to determine the location of the apical foramen of teeth undergoing endodontic treatment according to "the relative value method" was tested in in vitro experiments. In 96.5% of the 350 human teeth used in the experiment, the location of the apical foramen was determined within acceptable limits (0-0.5 mm). In 60 teeth, where the measurements were based on an intermittent audio signal, a point about 1 mm short of the apical foramen was located. The results were considered promising and a clinical evaluation of the device will be carried out.
Department of Stomatology, Federal University of Santa Catarina, Brazil.
M C
MC
Felippe
I J
IJ
Soares
D001314:Auscultation / Q000295:instrumentation; D005069:Evaluation Studies as Topic; D006801:Humans; D009811:Odontometry / Q000295:instrumentation*; D012390:Root Canal Therapy / Q000295:instrumentation*; D013016:Sound; D014092:Tooth Root / Q000033:anatomy & histology*