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

Figure 5 Comparison of the normalized muscle activity ratio (mean ± SD) during unilateral chewing. A: Comparison of the normalized muscle activity (NMA) ratio during unilateral chewing of candy on the preferred side (PS); B: Comparison of the NMA ratio during unilateral chewing of candy on the non-PS (NPS); C: Comparison of the NMA ratio during unilateral chewing of almond on the PS; D: Comparison of the NMA ratio during unilateral chewing of almond on the NPS; E: Comparison of the masseter muscle NMA ratio on the working side of NPS unilateral chewing of almond. ^aComparison to the non-bruxism group, P < 0.05; ^bComparison to the centric bruxism group, P < 0.05. CB: Centric bruxism; ECB: Eccentric bruxism; NB: Non-bruxism; WS: Working side; NWS: Non-working side; TA: Temporalis anterior; MM: Masseter muscle.