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Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2008 Aug;106(2):e90-3. doi: 10.1016/j.tripleo.2008.04.007. Epub 2008 Jun 13.

Comparison of radiographic and electronical working length determination on palatal and mesio-buccal root canals of extracted upper molars.

Author information

1
Conservative Dentistry and Periodontology Department, University of Pécs, Faculty of Medicine, Dental School, Hungary.

Abstract

OBJECTIVE:

The objective of this work was to compare the accuracy of working length determination of ProPex (Dentsply-Maillefer) electronic apex locator (EAL) to the radiographic method on extracted molars.

STUDY DESIGN:

Root canal length was determined using the electronic apex locator and conventional radiographic method. Digital radiographs were taken and the distance between the tip of the file and the radiographic apex was measured. Mann-Whitney and chi(2) tests were used for the statistical analysis.

RESULTS:

The average distance between the tip of the file and the radiographic apex in the mesio-buccal canals was 0.46 mm with the radiologic method, and 0.23 mm with EAL, and 0.43 mm and 0.31 mm in the palatal canals, respectively. The difference at the mesio-buccal canals was significant (Mann-Whitney test P = .048). The number of overextensions was higher in the EAL group.

CONCLUSION:

The desired position of the file achieved by the EAL proved to be more accurate in the mesio-buccal canals than with the radiologic method alone.

PMID:
18554958
DOI:
10.1016/j.tripleo.2008.04.007
[Indexed for MEDLINE]

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