Table 5.

Comparison of mandibular morphology in males

Index (Mean ± SD (mm))	Mandibular height					Upper third of mandibular width					Lower third of mandibular width
	11H	23H	45H	67H	Comparison among regions	11 W-U1/3	23 W-U1/3	45 W-U1/3	67 W-U1/3	Comparison among regions	11 W-L1/3	23 W-L1/3	45 W-L1/3	67 W-L1/3	Comparison among regions
Class I normodivergent	35.19 ± 3.10	34.55 ± 3.10	33.57 ± 2.79	29.85 ± 2.41	11 = 23 = 45, 45 > 67***	8.33 ± 1.49	9.25 ± 1.66	12.13 ± 1.67	15.53 ± 2.00	11 = 23, 23 < 45***, 45 < 67***	14.66 ± 1.92	11.46 ± 1.75	11.55 ± 1.68	13.47 ± 1.92	11 > 23***, 23 = 45, 45 < 67*, 11 = 67
Class I hyperdivergent	36.58 ± 3.25	36.11 ± 3.18	34.84 ± 2.98	29.37 ± 2.60	11 = 23 = 45, 45 > 67***	7.65 ± 1.11	8.48 ± 1.11	11.54 ± 1.52	14.72 ± 1.46	11 = 23, 23 < 45***, 45 < 67***	13.86 ± 1.42	10.54 ± 1.23	10.88 ± 1.41	13.01 ± 1.29	11 > 23***, 23 = 45, 45 < 67*, 11 = 67
Class I hypodivergent	33.28 ± 2.86	32.81 ± 2.44	31.55 ± 2.09	29.62 ± 2.15	11 = 23 = 45, 45 > 67*	8.93 ± 1.33	9.62 ± 1.31	12.32 ± 1.72	15.35 ± 1.95	11 = 23, 23 < 45***, 45 < 67***	14.55 ± 2.11	11.90 ± 1.97	11.08 ± 1.92	12.93 ± 1.57	11 > 23***, 23 = 45 = 67
Class II normodivergent	35.44 ± 2.63	34.89 ± 2.08	33.45 ± 2.04	30.34 ± 2.26	11 = 23 = 45, 45 > 67***	8.41 ± 1.35	9.28 ± 1.53	12.02 ± 1.57	15.36 ± 1.90	11 = 23, 23 < 45***, 45 < 67***	13.61 ± 1.82	11.07 ± 1.65	10.94 ± 1.65	12.54 ± 1.82	11 > 23***, 23 = 45 = 67
Class II hyperdivergent	37.59 ± 2.50	36.39 ± 2.53	34.59 ± 2.19	29.98 ± 1.54	11 = 23 = 45, 45 > 67***	7.55 ± 1.16	8.54 ± 1.61	11.49 ± 1.61	14.86 ± 1.79	11 = 23, 23 < 45***, 45 < 67***	12.57 ± 1.75	10.09 ± 1.94	10.12 ± 2.27	11.98 ± 1.69	11 > 23***, 23 = 45, 45 < 67*, 11 = 67
Class II hypodivergent	34.74 ± 2.52	32.95 ± 3.28	31.88 ± 2.56	30.83 ± 1.57	11 = 23 = 45 = 67	9.51 ± 1.53	9.95 ± 1.50	12.08 ± 1.77	15.92 ± 1.75	11 = 23 = 45, 45 < 67***	14.25 ± 1.64	11.31 ± 1.17	10.23 ± 1.55	13.11 ± 1.35	11 > 23**, 23 = 45, 45 < 67**, 11 = 67
Comparison among different vertical groups	1L < 1A*, 1L < 1H***, 2L < 2H**, 2A < 2H**	1L < 1A*, 1L < 1H***, 1A < 1H*, 2L < 2A*, 2L < 2H***	1L < 1A**, 1L < 1H***, 2L < 2H**	NS		1L > 1H**, 2L > 2A*, 2L > 2H***, 2A > 2H*	1L > 1H*, 2L > 2H**	NS	NS		2L > 2H**, 2A > 2H*,	1L > 1H**, 2L > 2H*, 2A > 2H*	NS	2L > 2H*
Comparison between different sagittal groups	1A = 2A 1L = 2L 1H = 2H	1A = 2A 1L = 2L 1H = 2H	1A = 2A 1L = 2L 1H = 2H	1A = 2A 1L = 2L 1H = 2H		1A = 2A 1L = 2L 1H = 2H	1A = 2A 1L = 2L 1H = 2H	1A = 2A 1L = 2L 1H = 2H	1A = 2A 1L = 2L 1H = 2H		1A > 2A* 1L = 2L 1H > 2H*	1A = 2A 1L = 2L 1H = 2H	1A = 2A 1L = 2L 1H = 2H	1A > 2A*, 1L = 2L 1H > 2H*

1A: Class I normodivergent group; 1L: Class I hypodivergent group; 1H: Class I hyperdivergent group;

2A: Class II normodivergent group; 2L: Class II hypodivergent group; 2H: Class II hyperdivergent group

^*P < 0.05, **P < 0.01, ***P < 0.001; NS: Not significant