Root and Canal Morphology of Mandibular Premolars in a Saudi Subpopulation: A Cone-Beam Computed Tomography Study

Table 2

Number of roots for gender and tooth position in mandibular first and second premolars.

Number of roots		Gender			Tooth position
		Male	Female	Total	Left side	Right side	Total
First premolars	One root n (%)	250 (49.3)	234 (46.2)	484 (95.5)	238 (46.9)	246 (48.5)	484 (95.5)
	Two roots n (%)	14 (2.8)	9 (1.8)	23 (4.5)	13 (2.6)	10 (2.0)	23 (4.5)
	Three roots n (%)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)
Second premolars	One root n (%)	254 (51.5)	235 (47.7)	489 (99.2)	244 (49.5)	245 (49.7)	489 (99.2)
	Two roots n (%)	2 (0.4)	2 (0.4)	4 (0.8)	2 (0.4)	2 (0.4)	4 (0.8)
	Three roots n (%)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)

Chi-square, Fisher’s exact tests; for gender  > 0.05; for side  > 0.05.