Electromyographic Analysis of Masticatory Muscles in Cleft Lip and Palate Children with Pain-Related Temporomandibular Disorders

Table 5

Electrical activity of the masticatory muscles at maximal voluntary contraction (MVC) in the children studied.

Region	Variable	Gender	TMD-pain group			Non-TMD group			value
				Mean	SD		Mean	SD
Temporalis muscles	Electrical activity (V/V%)	Females	15	99.83	37.05	14	110.55	40.04	0.4607
		Males	16	102.98	26.68	18	129.78	48.20	0.0576
		Total	31	101.46	31.61	32	121.37	45.17	0.0477
	Asymmetry index (%)	Females	15	15.93	7.30	14	7.53	3.03	0.0607
		Males	16	5.81	2.48	18	5.91	2.87	0.9563
		Total	31	10.71	5.21	32	6.62	2.93	0.0858
Masseter muscles	Electrical activity (V/V%)	Females	15	98.24	31.53	14	102.56	31.33	0.7144
		Males	16	103.01	35.33	18	115.29	41.76	0.3649
		Total	31	100.70	33.08	32	109.72	37.54	0.3163
	Asymmetry index (%)	Females	15	15.31	7.32	14	8.09	4.85	0.0330
		Males	16	6.75	3.34	18	6.59	3.38	0.9418
		Total	31	10.89	5.59	32	7.24	3.50	0.0773

Statistically significant difference.