Evaluation of Palatal Furcation Groove and Root Canal Anatomy of Maxillary First Premolar: A CBCT and Micro-CT Study

Table 2

Frequency of root canal types of maxillary first premolars (%).

Roots	Types of canal configuration^†
	I (%); (1-1)	II (%); (2-1)	III (%); (1-2-1)	IV (%); (2-2)	V (%); (1-2)	VI (%); (2-1-2)	VII (%); (1-2-1-2)	VIII (%); (3-3)	Total
1 root	245 (27.84)	181 (20.57)	9 (1.02)	134 (15.23)	29 (3.30)	13 (1.48)	9 (1.02)	—	620
2 roots	—	—	—	256 (29.09)	—	—	—	—	256
3 roots	—	—	—	—	—	—	—	4 (0.46)	4
Total	245 (27.84)	181 (20.57)	9 (1.02)	390 (44.32)	29 (3.30)	13 (1.48)	9 (1.02)	4 (0.46)	880

^†Vertucci’s classification of canal system.