Variations in the Root Form and Root Canal Morphology of Permanent Mandibular First Molars in a Sri Lankan Population

Table 4

Level of bifurcation of root canal.

Vertucci’s root canal type	Mesial root			Distal root
	Cervical 1/3	Middle 1/3	Apical 1/3	Cervical 1/3	Middle 1/3	Apical 1/3
III	37 (97.4%)	1 (2.60%)	0	34 (91.90%)	3 (8.1%)	0
V	125 (98.4%)	2 (1.6%)	0	38 (76.0%)	10 (20.0%)	2 (4.0%)
VI	0	0	1 (100%)	0	1 (100%)	0
VIII	0	0	1 (50%)	—	—	—