Comparison of imaging findings of 714 symptomatic and asymptomatic temporomandibular joints: a retrospective study

Table 3 Distribution of sex, age, and imaging features of symptomatic and asymptomatic sides

	Parameter	Asymptomatic (n = 354)	Symptomatic (n = 360)	P	r, P
Sex n (%)	Female	268 (75.7)	304 (84.4)	χ² = 8.554, P = 0.003	r = 0.109, P = 0.003
Age n (%)	≤ 18 Y	95 (26.8)	65 (18.1)	χ² = 8.084, P = 0.018	r = 0.075, P = 0.044
	19–30 Y	182 (51.4)	212 (58.9)
	> 30 Y	77 (21.8)	83 (23.1)
Condylar morphology n (%)	0	266 (75.1)	176 (48.9)	χ² = 64.693, P = 0.000	r = 0.281, P = 0.000
	1	67 (18.9)	121 (33.6)
	2	20 (5.6)	32 (8.9)
	3	1 (0.3)	29 (8.1)
	4	0 (0)	2 (0.6)
Condylar position n (%)	Anterior	71 (20.1)	58 (16.1)	χ² = 14.681, P = 0.001	r = 0.130, P = 0.001
	Concentric	173 (48.9)	140 (38.9)
	Posterior	110 (31.1)	162 (45.0)
Disc morphology n (%)	Biconcave	164 (46.3)	73 (20.3)	χ² = 65.170, P = 0.000	r = 0.279, P = 0.000
	Lengthened	46 (13.0)	36 (10.0)
	Contracture	95 (26.8)	169 (46.9)
	Irregular	49 (13.8)	82 (22.8)
Disc position n (%)	NA	148 (41.8)	47 (13.1)	χ² = 83.642, P = 0.000	r = 0.300, P = 0.000
	ADDWR	74 (20.9)	84 (23.3)
	ADDWoR	121 (34.2)	222 (61.7)
	PDDWR	10 (2.8)	6 (1.7)
	PDDWoR	1 (0.3)	1 (0.3)
Joint effusion n (%)	0	331 (93.5)	264 (73.3)	χ² = 53.911, P = 0.000	r = 0.273, P = 0.000
	1	23 (6.5)	86 (23.9)
	2	0 (0.0)	10 (2.8)

The data were obtained from the Pearson Chi-Square test and Spearman correlation coefficient analysis
Significant difference was set at P < 0.05
Y year; NA normal; ADDWR anterior disc displacement with reduction; ADDWoR anterior disc displacement without reduction; PDDWR posterior disc displacement with reduction; PDDWoR posterior disc displacement without reduction

ISSN: 1472-6831