Table 7.

(b) A comparison of the electromyographic duration of the masseter, anterior temporalis and orbicularis oris muscles in the contracted state (right and left side) of Groups I, II, III and IV with the control group (one-way ANOVA)

Group	Source of variation		Masseter (p-value)	Anterior temporalis (p-value)	Orbicularis oris (p-value)
Duration	Right side	Between groups	0.008, S, p < 0.05	0.070, NS, p > 0.05	0.35, NS, p > 0.05
		Within groups
		Total
	Left side	Between groups	0.205, NS, p > 0.05	0.906, NS, p > 0.05	0.21, NS, p > 0.05
		Within groups
		Total

NS, not significant; S, significant.