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

Table 1

Root canal morphology of the specimens.

	I	II	III	IV	V	VI	VII	VIII	A
Mesial root ()	4 (1.03%)	57 (14.81%)	38 (9.87%)	140 (36.36%)	127 (32.99%)	1 (0.26%)	1 (0.26%)	0	14 (3.64%)
Distal root ()	252 (65.28%)	18 (4.66%)	37 (9.59%)	22 (5.70%)	50 (12.95%)	1 (0.26%)	0	0	4 (1.04%)

A: additional canals configurations.