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EVALUATION OF ROOT AND CANAL MORPHOLOGY OF MAXILLARY PERMANENT PREMOLARS IN AN EGYPTIAN POPULATION BY CONE-BEAM COMPUTED TOMOGRAPHY.

Most of single single root were type II (62.6%) and III (12.6%). While the most common Vertucci classifications for single rooted maxillary second premolar were I (44%) followed by II (29.8%) and III (17.9%) Conclusions: Under the condition of this study, the root canal configurations of an Egyptian population showed that most maxillary first premolars were two-rooted with 2 root canals, whereas maxillary second premolars tended to be single-rooted with one or two root canals more or less equally distributed. In vivo CBCT imaging is a clinically effective tool for providing comprehensive information about the root canal morphology of various teeth.