TY - JOUR ID - TI - Electromyography evaluation of masseter and temporalis muscles in patients with temporomandibular joint dysfunction AU - Dr. Imad S. Noorali BDS FICMS د. عماد نور علي AU - * Dr. Majeed A. Baheer BDS FICMS ** د. مجيد باهر PY - 2016 VL - 13 IS - 1 SP - 85 EP - 91 JO - MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان SN - 26188500 18138500 AB - Aim: Temporomandibular disorders (TMD) are composed of heterogeneousmasticatory disorders which include muscle and joint disorders ،Majorprecipitating factors are occlusal, traumatic, psychosocial and systemic factors.The symptoms associated with this syndrome are due to hyper function and/ordysfunction of the masticatory muscles, rather than to degenerative orinflammatory changes of the TMJ .Various attempts have been made todemonstrate this hyperactivity via EMG recordings of the masticatory muscles .The aim of this investigation was to determine possible altered muscular functionin patients with TMD, as well as to determine the need for EMG application inTMD diagnosis.Methods: Thirty adults participated in this study :20 subjects with signs andsymptoms of TMD and 10 asymptomatic subjects .Surface EMG recordings wereobtained from left and right anterior temporal muscle, left and right massetermuscle.Results: of this investigation showed the presence of altered masticatory muscleactivity in TMD patients and confirmed the use of electromyography in TMDdiagnosis.Conclusion: The investigation has confirmed that EMG is a useful and non-invasivemethod in TMD diagnosis.

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