Radiographic Position of Impacted Mandibular Third Molars and Their Association with Pathological Conditions

Table 5

Frequency and percentage of the relation of mandibular third molars with different positions with the mandibular canal.

Position of IMTMs (depth and angulation)	Within IAC (contact with IAN)			Contact with IAC’s external border
	n (%)	OR (95% CI)	value	n (%)	OR (95% CI)	value
Vertical	240 (15)	1	—	82 (5.1)	1	—
Mesioangular	409 (25.6)	3.9 (2.93,5.24)	<0.001	74 (4.6)	2.07 (1.39,3.08)	<0.001
Horizontal	134 (8.4)	1.52 (1.09,2.14)	0.013	19 (1.2)	0.63 (0.35,1.09)	0.111
Distoangular	46 (2.9)	0.83 (0.53,1.3)	0.419	16 (1)	0.85 (0.45,1.55)	0.602
Buccolingual	3 (0.2)	0.12 (0.03,0.36)	0.001	3 (0.2)	0.35 (0.08,1.06)	0.099
Others	40 (2.5)	0.54 (0.35,0.83)	0.005	66 (4.1)	0.51 (0.26,0.95)	0.042
A	290 (18.1)	1	—	89 (5.6)	1	—
B	484 (30.2)	2.97 (2.35,3.77)	<0.001	94 (5.9)	1.88 (1.33,2.66)	<0.001
C	98 (6.1)	2.31 (1.58,3.43)	<0.001	24 (1.5)	1.83 (1.04,3.14)	0.031
I	427 (26.7)	1	—	95 (5.9)	1	—
II	427 (26.7)	0.83 (0.67,1.04)	0.102	112 (7)	0.99 (0.72,1.36)	0.934
III	18 (1.1)	1.64 (0.68,4.59)	0.299	0 (0)	0.14 (0.01,2.54)	0.18

Vertical, A, and I are considered as the reference level.