Table 2.

Findings of Chi-square test on prevalence of occlusal features between children affected by developmental dyslexia (DD group) and typical developing children (control group)

	DD, n (%) (N = 28)	Control, n (%) (N = 51)	P
Class I	16 (57.14)	36 (70.58)	0.252
Class II	11 (39.28)	13 (25.49)	0.361
Class III	1 (3.57)	2 (3.92)	0.614
Posterior crossbite	5 (17.85)	5 (9.80)	0.499
Posterior unilateral crossbite	4 (14.28)	4 (7.84)	0.499
Posterior bilateral crossbite	1 (3.57)	1 (1.96)	0.754
Scissorbite	1 (3.57)	2 (3.92)	0.591
Diastemas	16 (57.14)	12 (23.52)	0.006
Midline diastemas	13 (46.42)	8 (15.68)	0.007
Overbite 0–4 mm	8 (29.42)	21 (41.17)	0.019
Overbite >4 mm	20 (71.42)	30 (58.83)	0.006
Overjet 0–4 mm	13 (46.43)	36 (70.59)	0.061
Overjet >4 mm	15 (53.57)	15 (29.41)	0.001

Note: P-values ≤ 0.05 were considered statistically significant.