[Clinical appliance of cone-beam computed tomography and dental operating microscope in treating maxillary molars containing bifurcative canals buccally].

Objective: To evaluate the effect of using cone-beam computed tomography (CBCT) and dental operating microscope (DOM) in treating maxillary molars containing bifurcative canals buccally.

Methods: 304 endodontically treated maxillary molars (159 maxillary first molars and 145 maxillary second molars) were included. After preparing access to pulp chamber, the number of canal orifices and location in the pulp chamber floor of each tooth were recorded.