PMC4254077_01
Working length radiograph showing three MB canals. MB3 joining the MB2 at middle third.
CRID2014-320196.001.jpg
PMC4254077_01_CRID2014-320196.001.jpg
fig1
Digital radiovisiograph (Kodak RVG system) at 20 degree angulation revealed that MB1 and MB2 canals merged in the apical third (Figure 1).
Postobturation radiograph showing all 3 MB canals exiting as single canal.
CRID2014-320196.002.jpg
PMC4254077_01_CRID2014-320196.002.jpg
fig2
A postobturation radiograph was obtained (Figure 2).