Evaluating the accuracy of an electronic Root Canal

measuring device using the Clearing Technique

Saad Al-Nazhan, BDS, MS
King Saud University, P.O, Box 60169, Riyadh 11545, Saudi Arabia

The accuracy of an electronic root canal measuring device is evaluated using forty human subjects seeking tooth extraction. Both single and multi-rooted teeth were used. The position of the file tip to the apical constriction of the root apex was examined microscopically after tooth extraction using the clearing technique. Results showed 95% accuracy for anterior teeth, 80% for premolars and 63% for molar teeth.

Saudi Dental Journal 1993;5(2):64-67.