Comparative study of surface electromyography of masticatory muscles in patients with different types of bruxism

Figure 4 Comparison of the electromyography activity (mean ± SD) during unilateral chewing. A: Comparison of the root mean square (RMS) of electromyography amplitudes of unilateral chewing of candy on the preferred side (PS); B: Comparison of the RMS of electromyography amplitudes of unilateral chewing of candy on the non-PS (NPS); C: Comparison of the RMS of electromyography (EMG) amplitudes of unilateral chewing of almond on the PS; D: Comparison of the RMS of EMG amplitudes of unilateral chewing of almond on the NPS. ^aComparison to the non-bruxism group, P < 0.05; ^bComparison to centric bruxism group, P < 0.05. WS: Working side; NWS: Non-working side; TA: Temporalis anterior; MM: Masseter muscle.