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

Table 4

Frequency and percentage of complications based on the angulation of impacted mandibular third molars.

Winter classification on angulation	Root resorption			Distal caries			Pathologic lesions			Relation with the IAC
	n (%)	OR (95% CI)	value	n (%)	OR (95% CI)	value	n (%)	OR (95% CI)	value	n (%)	OR (95% CI)	value
Vertical	18 (1.1)	1	—	30 (1.9)	1	—	65 (4.1)	1	—	332 (20.1)	1	—
Mesioangular	131 (8.2)	8.46 (5.22,14.52)	<0.001	92 (5.8)	3.2 (2.11,4.99)	<0.001	23 (1.4)	0.3 (0.18,0.48)	<0.001	483 (30.2)	3.44 (2.6,4.57)	0.001
Horizontal	55 (3.4)	8.98 (5.23,16.1)	<0.001	53 (3.3)	5.01 (3.12,8.18)	<0.001	5 (0.3)	0.16 (0.06,0.37)	<0.001	153 (9.6)	1.3 (0.94,1.8)	0.114
Distoangular	6 (0.4)	1.64 (0.58,4.02)	0.305	10 (0.6)	1.67 (0.75,3.41)	0.18	18 (1.1)	1.4 (0.77,2.42)	0.246	62 (3.9)	0.84 (0.55,1.27)	0.398
Buccolingual	4 (0.2)	4.79 (1.31,14.06)	0.008	1 (0.1)	0.62 (0.03,3.09)	0.648	2 (0.1)	0.56 (0.09,1.92)	0.431	6 (0.4)	0.18 (0.07,0.43)	<0.001
Others	38 (2.4)	13.47 (7.44,25.25)	<0.001	9 (0.6)	1.38 (0.6,2.87)	0.417	6 (0.4)	0.38 (0.15,0.84)	0.029	106 (6.6)	0.53 (0.35,0.79)	0.002

Vertical is considered as the reference level.