Table 2.

EMG clench measures while wearing the appliances

EMG measure with appliance	Appliance used	EMG examination datapoint
		T0	T1	T2
POC-ATM (%)	Occlus-o-Guide®	79 ± 13	82 ± 7	83 ± 4
	Andresen activator	73 ± 17	81 ± 10	82 ± 16
	p	0.25	0.72	0.09
POC-MM (%)	Occlus-o-Guide®	84 ± 8	85 ± 7	86 ± 4
	Andresen activator	80 ± 8	84 ± 6	84 ± 12
	p	0.02	0.05	0.11
%RATM	Occlus-o-Guide®	60 ± 29	64 ± 19	68 ± 23
	Andresen activator	46 ± 27	68 ± 36	88 ± 37
	p	0.05	0.96	0.001
%LATM	Occlus-o-Guide®	66 ± 39	65 ± 18	71 ± 26
	Andresen activator	52 ± 28	58 ± 26	86 ± 24
	p	0.10	0.04	0.009
%RMM	Occlus-o-Guide®	87 ± 36	89 ± 26	99 ± 36
	Andresen activator	60 ± 30	90 ± 32	99 ± 29
	p	0.001	0.92	0.40
%LMM	Occlus-o-Guide®	85 ± 43	88 ± 24	95 ± 31
	Andresen activator	60 ± 30	87 ± 29	98 ± 32
	p	0.005	0.77	0.16

Data are means ± standard deviation. T0, first use; T1, after 6 months; T2, 12 after months; POC-ATM, percent overlapping coefficient of the anterior temporalis muscles; POC-MM, percent overlapping coefficient of the masseter muscles; %RATM, %LATM, %RMM, %LMM, clench percentages for each muscle; p, significance between appliances (Mann–Whitney test).