Radiographic evaluation of the anatomy of endodntically treated maxillary premolars in Iraqi group

Abstract

order to determine the number of root canals and the number of apical
foramens, 1528 endodontically treated. Teeth were examined. Out of 777 maxillary first
premolars 9.1% had one canal, (8.6% of them had one apical foramen and 0.5% had two
foramens) and 89.7% had two canals (8.5% had one apical foramen and 81.2% had two
apical foramens). Only 1.2% of examined teeth had three canals and three foramens. Out
of 751 maxillary second premolars 68.6% had one canal (65.1% of them had one apical
foramen and 3.5% had two apical foramens) and 31.4% of teeth had two canals (11.9% of
them had one apical foramen and 19.6% had two apical forameris