Use of Cone Beam Computed Tomography in Endodontics
Figure 7
Maxillary first and second molars often present treatment challenges because of the frequent presence of mesioaccessory (mb2) canals. On initial periapical radiographic examination of this previously treated maxillary left first molar, no mb2 canal was detected; however a periapical lesion is seen (a). Note the overlap of the interproximal contacts between the molars indicating a geometric distortion in the horizontal plane. CBCT imaging ((b) 0.076 mm axial and (c) 0.076 parasagittal) clearly demonstrates an additional canal that was not previously treated.
