Occlusal Features and Temporomandibular Joint Disorder: A Cross-Sectional Study

Table 4

The number, percentage, Chi-square, and level of significance of TMD parameter occurrence in different posterior crossbites.

Posterior crossbite	Muscle pain		TMJ pain		Clicking		Chi-square	Significance
	Present (N = 8)	Absent (N = 10)	Present (N = 12)	Absent (N = 6)	Present (N = 13)	Absent (N = 5)
Buccal posterior crossbite (BPCB) N = 18
Unilateral (N = 12)
With shift (N = 8)	2 (25%)	6 (60%)	5 (42%)	3 (50%)	5 (39%)	3 (60%)	3	0.223 (NS)
Without shift (N = 4)	0 (0%	4 (40%)	0 (0%)	4 (67%)	1 (8%)	3 (60%)	0.223 (NS)	0.336 (NS)
Bilateral (N = 6)
With shift (N = 1)	1 (13%)	0 (0%)	1 (8%)	0 (0%)	1 (8%)	0 (0%)	N/A	N/A
Without shift (N = 5)	0 (0%)	5 (50%)	0 (0%)	5 (83%)	0 (0%)	5 (100%)	N/A	N/A
Lingual posterior crossbite (LPCB) (N = 4)
Unilateral (N = 1)
With shift (N = 0)	0 (0%)	0 (0%)	0 (0%)	0 (0%)	0 (0%)	0 (0%)	N/A	N/A
Without shift (N = 1)	1 (13%)	0 (0%)	1 (8%)	0 (0%)	1(8%)	0 (0%)	N/A	N/A
Bilateral (N = 3)
With shift (N = 0)	0 (0%)	0 (0%)	0 (0%)	0 (0%)	0 (0%)	0 (0%)	N/A	N/A
Without shift (N = 3)	1 (13%)	2 (20%)	1 (8%)	2 (33%)	1(8%)	2 (40%)	N/A	N/A
Correlation	0.255		0.123		0.243
Significance	†		†		†

NS, nonsignificance at . ^†weak positive correlation (R < 0.3). N/A, nonapplicable due to small sample size.