Zahid Iqbal, Rafique Ahmed Memon.
Comparision between radiographic and electronic working length determination in root canal treatment in vivo study.
Isra Med J Jan ;5(1):41-6.

OBJECTIVE: To compare radiographic & electronic working length measurement of the root canal in patients presenting at Liaquat University Hospital Hyderabad STUDY DESIGN: Cross sectional comparative study PLACE AND DURATION: Department of Operative Dentistry, Liaquat University Hospital/Civil Hospital Hyderabad from 4th October 2006 to 4th April 2007. METHODOLOGY: A total of hundred Patients of either gender, presented with irreversible pulpitis of permanent first mandibular premolars were included in this study. Before starting any procedure a periapical radiograph of tooth was taken to allow proper selection. An endodontic access was prepared and the pulp tissue was extripated. A working length radiograph was taken with a file in the canal and the radiographic working length was established. The apex locator root Zx was used to establish the electronic working length. The working length obtained by using the radiographic technique was compared with those obtained by using the apex locator. RESULTS: Hundred patients were selected for out of which sixty-seven patients (67 %) were female and thirty-three patients (33 %) were male. The mean working length was 19.8mm +1.03 SD for radiographic working length determination and 18.9mm + 1.05 SD for electronic working length determination. Mean difference between radiographic and electronic working length with 0.05 level of significant were 0.87 mm that was statistically significant CONCLUSION: This study has showed statistically significant difference between the electronic measurements compared with the radiographic measurements in working length determination of a root canal.

PakMediNet -Pakistan's largest Database of Pakistani Medical Journals - http://www.pakmedinet.com