Root canal morphology of human mandibular incisors in Yazd province

ABSTRACT

An in vitro study was performed to determine the number and the type of root canals of mandibular incisor teeth in an Iranian population. Sixty eight mandibular incisor teeth were immersed in India ink decalcified and cleared. It was found that 55.9% of the teeth had two canals that in 51.5% of them the canals merged into one canal before exiting the tooth through one apical foramen. Because of high percentage of two canals in lower mandibular incisors, there should be more attempt to detect the second canal during access preparation