Head and neck posture influences masticatory muscle electromyographic amplitude in healthy subjects and patients with temporomandibular disorder: a preliminary study

Background: Despite the association of masticatory function with head posture and mandible movement, impact on masseter muscle electrical activity remains unclear. This study aimed to investigate anterior temporal, masseter, superior trapezius, sternocleidomastoid muscles in temporomandibular disorder (TMD) patients three different positions compare findings those for healthy subjects.