Table 3.

Occlusal traits distribution based on the IOTN (DHC). Sample size (n=3016 subjects)

Scoring occlusal trait	Dental Health Component																		P
	No, slight need				Moderate/borderline						Great need						Total
	Grade 1		Total		Grade 2		Grade 3		Total		Grade 4		Grade 5		Total
	n	%	n	%	n	%	n	%	n	%	n	%	n	%	n	%	n	%
Increased OJ	910	30.2	910	30.2	327	11	103	3	430	14	63	2	9	0.3	72	2.3	1412	46.8	<0.001
Reversed OJ	0	0	0	0	52	1.7	109	3.6	161	5.3	16	0.5	1	0.66	17	0.66	178	5.9	<0.001
Displacement	623	21	623	21	597	20	430	14	1027	34	640	21	0	0	640	21	2290	76	<0.001
Missing teeth	0	0	0	0	0	0	0	0	0	0	360	12	271	9	631	21	631	20.9	<0.001
Increased OB	0	0	0	0	654	22	151	5	805	27	46	1.5	0	0	46	1.5	851	28	<0.001
Open bite	0	0	0	0	179	6	106	3.5	285	9.5	23	0.7	0	0	23	0.7	308	10.2	<0.001
Crossbite	0	0	0	0	276	9	307	10	583	19	320	11	0	0	320	11	903	30	<0.001
Scissor bite	0	0	0	0	0	0	0	0	0	0	47	1.6	0	0	47	1.6	47	1.6	0.06