A Cone-Beam Computed Tomography Scanning of the Root Canal System of Permanent Teeth among the Moscow Population

Table 2

Anatomy of roots and root canals in mandibular teeth.

Tooth	Number of studied teeth	Roots	(%)	Canals	(%)
Central incisor	512	1	512 (100%)	1	509 (99.4%)
				2	3 (0.6%)
Lateral incisor	500	1	500 (100%)	1	496 (99.2%)
				2	4 (0.8%)
Canine	521	1	521 (100%)	1	520 (99.8%)
					1 (0.2%)
First premolar	490	1	490 (100%)	1	437 (89.2%)
				2	53 (10.8%)
Second premolar	443	1	442 (99.8%)	1	399 (90.1%)
				2	43 (9.7%)
		2	1 (0.2%)	2	1(0.2%)
First molar	407	2	407 (100%)	2	2 (0.5%)
				3	320 (78.6%)
				4	85 (20.9%)
Second molar	398	1	2 (0.5%)	2	2 (0.5%)
		2	396 (99.5%)	2	47 (11.8%)
				3	327 (82.2%)
				4	22 (5.5%)
Third molar	210	1	42 (20%)	1	1 (0.5 %)
				2	41 (19.5%)
		2	168 (80%)	2	45 (21.4%)
				3	123 (58.6%)