Cone-Beam Computed Tomography Analysis on the Relationship between the Mandibular Third Molar and the Position of the Mandibular Canal in Koreans from the Yanbian Area and the Han People

Table 6

Comparison between Korean and Han nationality in terms of relative position and shape of mandibular canal and MTM (n (%)).

		Round/oval	Teardrop shape	Dumbbell shape	χ^2/Fisher
Below the root	Korean	76 (71.0)	25 (23.4)	6 (5.6)	1.784	0.410
	Han	74 (78.7)	15 (16)	5 (5.3)
Buccal side	Korean	20 (46.5)	13 (30.2)	10 (23.3)	3.507	0.173
	Han	45 (64.3)	15 (21.4)	10 (14.3)
Lingual side	Korean	5 (17.9)	1 (3.6)	22 (78.6)	4.467	0.113
	Han	4 (10.5)	8 (21.1)	26 (68.4)
Between roots	Korean	7 (23.3)	1 (3.4)	22 (73.3)	1.955	0.362
	Han	4 (36.4)	1 (9.1)	6 (54.5)

Note. means statistical significance.