Perrini N, Francini E, Perrini U
G Ital Endod. 1991;5(2):32-5.
Using horizontal sections at various levels and subsequent examination through a stereoscopic microscope, the authors examined 144 roots from the same number of mandibular incisors, in order to determine the number of canals in the coronal third, in the medial third and in the apical third of the root. It was found that 36.1% of the sample displayed multiple root canals.
