Electromyography as a Means of Assessing Masticatory Muscle Activity in Patients with Pain-Related Temporomandibular Disorders

Table 3

Electrical activity of the temporalis and masseter muscles at rest for the examined groups of children.

Region	Variable	Gender	TMD-pain group			Pain-free TMD group			Non-TMD group
			n	Mean	SD	n	Mean	SD	n	Mean	SD
TA	EA	Girls	16	8.01	1.68	14	6.73	1.76	15	5.54	1.25
		Boys	14	7.71	2.15	16	6.60	2.20	15	5.34	2.07
		Total	30	7.87	1.89	30	6.66	1.97	30	5.44	1.68
	AI	Girls	16	10.86	5.18	14	10.10	6.54	15	11.32	6.66
		Boys	14	14.59	8.10	16	12.20	7.16	15	9.66	4.25
		Total	30	12.60	7.54	30	11.13	6.53	30	10.49	6.36
MM	EA	Girls	16	6.01	2.40	14	5.28	2.25	15	3.90	1.92
		Boys	14	6.05	2.04	16	4.81	1.90	15	4.43	1.90
		Total	30	6.03	2.21	30	5.03	2.08	30	4.17	1.90
	AI	Girls	16	10.10	6.64	14	12.11	6.59	15	15.00	9.67
		Boys	14	10.29	5.89	16	12.84	7.91	15	14.74	8.72
		Total	30	10.19	6.36	30	12.50	7.97	30	14.87	7.52

TA: temporalis anterior muscles; MM: masseter muscles; EA: electrical activity (μV/μV%); AI: asymmetry index (%).