Table 3.

Malocclusion according to different habits of students.

Characteristics		Malocclusion								p-value
		No		Class I		Class II		Class III
		N	%	N	%	N	%	N	%
Finger sucking	Yes	5	1.5	9	5.4	15	5.5	4	4.3	0.03
	No	338	98.5	157	94.6	256	94.5	89	95.7
Lip bitting	Yes	3	0.9	3	1.8	11	4.1	6	6.5	<0.01
	No	340	99.1	163	98.2	260	95.9	87	93.5
Tongue thrusting	Yes	2	0.6	6	3.6	12	4.4	3	3.2	0.02
	No	341	99.4	160	96.4	259	95.6	90	96.8
Mouth breathing	Yes	6	1.7	8	4.8	15	5.5	4	4.3	0.08
	No	337	98.3	158	95.2	256	94.5	89	95.7
Early loss of deciduous teeth	Yes	9	2.6	8	4.8	13	4.8	10	10.8	0.01
	No	334	97.4	158	95.2	258	95.2	83	89.2