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

Table 4

Electrical activity of the masticatory muscles at clinical mandibular rest position 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	6.79	1.43	14	5.80	1.24	0.0554
		Males	16	7.53	2.43	18	6.06	1.95	0.0596
		Total	31	7.17	2.01	32	5.94	1.66	0.0102
	Asymmetry index (%)	Females	15	15.81	7.66	14	10.19	4.97	0.1557
		Males	16	16.13	7.62	18	9.94	4.68	0.0807
		Total	31	15.99	7.02	32	10.06	4.33	0.0218
Masseter muscles	Electrical activity (V/V%)	Females	15	5.18	2.37	14	3.98	1.97	0.1516
		Males	16	6.08	2.11	18	4.64	2.01	0.0509
		Total	31	5.64	2.25	32	4.35	1.98	0.0188
	Asymmetry index (%)	Females	15	14.35	7.01	14	5.53	2.44	0.0080
		Males	16	12.04	6.67	18	6.08	3.42	0.0478
		Total	31	13.25	6.69	32	5.81	2.46	0.0010

Statistically significant difference.