Mesiodistal and buccolingual roentgenographic investigation of 7,275 root canals.

Abstract Roentgenograms taken from both mesiodistal and buccolingual directions were used in an in vitro study of the number of root canals and their different divisions in each root and tooth; the influence of age on the root canal; the curvatures of the root canals in both directions; the ramifications of the main root canals; the location of foramina and the frequency of deltas.