“…During the tests, the subjects sat in a comfortable office chair while maintaining their upright posture, with feet flat on the floor and arms resting on their legs. We analyzed the masseter and temporalis muscles in both sides; for the static evaluation, the participants were evaluated during rest, protrusion, laterality movements (right and left), and maximal voluntary dental clenching for 4 s. Additionally, the maximal voluntary contraction with inert material was recorded for 4 s, so that the electromyography samples could be normalized (13). The inert material consisted of a paraffin sheet (Parafilm M, Pechiney Plastic Packaging, Batavia, IL, USA) inserted between the occlusal faces of the upper and lower first molars on the right and left sides of the dental arch.…”