PMC3389662_01
(a) Preoperative radiograph of tooth 19. (b) Access opening showing four canals (MBR: Mesiobuccal; MLR: Mesiolingual; DBR: Distobuccal; DLR: Distolingual). (c) Working length radiograph of tooth 19 in eccentric angulation. (d) Postobturation radiograph.
CRIM.DENTISTRY2012-237302.001.jpg
PMC3389662_01_CRIM.DENTISTRY2012-237302.001.jpg
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In addition, radiographic apical contour of the tooth suggested that there might be two distal and two mesial roots (Figure 1(a)). The conventional access was modified to improve access to the additional canals (Figure 1(b)). Working length was confirmed (Figure 1(c)) and the canals were instrumented. The patient was asymptomatic at the next appointment, a week later, which allowed for root canal obturation and a coronal composite restoration (Figure 1(d)).