The preliminary study of the effects of individual musculoskeletally stable position in the treatment of temporomandibular disorders

Objective : TMD (Temporomandibular Joint Disorders) is the dysfunction of group of muscles and bones in the joint area, the main symptom of TMD is the pain of the chewing muscles and (or) the temporomandibular joints, which seriously affects the life qualities of patients and even social behaviors. Stabilization splint is one of the commonly used effective reversible treatment, the determination of the jaw position is the critical point in the process of treatment. Methods: In this study, we firstly used Fricton Index to evaluate the clinical curative effect of TMD with the treatment of IMS (Individual MusculoskeletallyStable) position stabilization splint; then CBCT (Cone Beam Computerized Tomography) was used to observe the TMJ condylar position changes of TMD before and after the treatment of IMS stabilization splint; finally sEMG (surface-Electromyogram) was used to observe the changes of electromyography of AT (anterior temporalis) and MM (masseter muscle) of TMD before and after the treatment of IMS stabilization splint. Results and conclusions: IMS stabilization splint is one of efficient reversible treatments for TMD, which can relieve and even eliminate the TMD symptoms, especially for ease of pain and corrective to jaw movement disorder; After the treatment of IMS, posterior space of TMJ has the tendency of increasing; IMS stabilization splint may ease even cure the TMD by removing the masticatory muscle disorders, terminating the masticatory muscles antagonism between bad function so as to make them function in harmony with each other.