Frequency of second canal in mandibular lateral incisors [in-vitro]

ABSTRACT

Objective of the study was to determine the frequency of second canal in extracted mandibular lateral incisors. It was observational study and was conducted in the Dental Outpatient's Department of Liaquat University of Medical and Health Sciences Hospital, Hyderabad / Jamshoro from 1st January 2010 to 31th March 2010. This study included 100 extracted permanent mandibular lateral incisors. These extracted teeth were stored in 10% formalin until access preparation was made. Pulp chamber was accessed using round bur and then irrigated with sodium hypochlorite till it is clearly visible. Then DG16 endodontic explorer was used for the location and negotiation of second canal after location of main canal. Teeth in which second canal was located, No. 10 K-files were inserted into main canal and second canal. Then two periapical radiographs from the buccolingual and proximal sides were taken for confirmation. Results were then recorded in proforma. Single canal was found in 61% of permanent mandibular lateral incisors. 39% of permanent mandibular lateral incisors had second canal. The frequency of second canal in the present study was 39% of permanent mandibular lateral incisors