TY - JOUR T1 - Effect of Bite Plane on The EMG Activity of Mastication Muscles in T.M.J Dysfunctions TT - بررسی اثر بایت‌پلن بر روی فعالیت الکترومیوگرافی عضلات ماضغه بیماران با اختلالات مفصل گیجگاهی فکی JF - gums-med JO - gums-med VL - 12 IS - 45 UR - http://journal.gums.ac.ir/article-1-750-en.html Y1 - 2003 SP - 7 EP - 15 KW - Electromyography KW - Muscles KW - Tempromandibular Joint Diseases N2 - Introduction: Bite plane is an important devices for diagnosing and treating the patient with T.M.J dysfunctions. Objective: The aim of this research is to study its effects on EMG activity of mastication muscles. Materials and Methods: Twenty-five patients with TMJ dysfunctions were selected. EMG of masseter and temporal muscles (left and right) was recorded with surface electrode. Then, the subjects were freated by the bite plane. The wave were taken in both muscles in three positions, include rest position (r), maximum intercuspation position (co) and maximum clenching (cl). Bite plane was made for all patients from cold cure acrylic resin. Before the use of bite plane, E.M.G was gotten two sides of mastication muscles then it was used for 3 months only at nights and after that E.M.G will be repeated and then they compare to each other with analysis of pair-t-test. Results: The mean activity of masster and temporal muscles decrease in the left and right side of patient after use of bite plane (P M3 ER -