Effect of mandibular mobilization on electromyographic signals in muscles of mastication and static balance in individuals with temporomandibular disorder: study protocol for a randomized controlled trial

Abstract

BackgroundThe stomatognathic system and dysfunction in this system may be related to postural control. The proposal of the present study is to assess the effect of mandibular mobilization in individuals with temporomandibular disorder using surface electromyography of the muscles of mastication and stabilometric variables.Methods/DesignA randomized, controlled, blind, clinical trial will be carried out, with the participants divided into three groups: 1) facial massage therapy (control group), 2) nonspecific mandibular mobilization and 3) specific mandibular mobilization. All groups will be assessed before and after treatment using the Research Diagnostic Criteria for Temporomandibular Disorders, surface electromyography of the masseter and temporal muscles and stabilometry. This study is registered with the Brazilian Registry of Clinical Trials (RBR9x8ssz).DiscussionA large number of studies have employed surface electromyography to investigate the function/dysfunction of the muscles of mastication and associations with signs and symptoms of temporomandibular disorders. However, it has not yet been determined whether stabilometric variables offer adequate reliability in patients with this disorder. The results of the proposed study will help determine whether specific and/or nonspecific mandibular mobilization exerts an effect on the muscles of mastication and postural control. Moreover, if an effect is detected, the methodology defined in the proposed study will allow identifying whether the effect is local (found only in the muscles of mastication), global (found only in postural control) or generalized.

Association between chewing dysfunctions and temporomandibular disorders: A systematic review

“…Additionally, in a sample of 41 healthy participants, this method was applied in the temporalis and masseter muscles, combined with bite‐force measurements and it was considered applicable, quantitative and reliable for evaluation of the chewing function . The mean velocity during mastication is one of the examples of measurements that can be used to assess dysfunction in TMD patients . Nonetheless, the sEMG method has some limitations.…”

Association of facial massage, dry needling, and laser therapy in Temporomandibular Disorder: case report

“…It should be noted that, in the current analysis, the FM protocol was utilized in accordance with recommendations from previous studies (4,8) . According to Ariji et al (8) , when FM is appropriately used, it promotes the reduction of mechanoreceptor sensitization through afferent fibers, causing sensorial pain blockage by diminishing impulses from the peripheral nervous system (PNS) to the central nervous system (CNS).…”

“…Myofascial pain is characterized by muscular hyperactivation and reduction in the normal blood flow of the muscle tissues, which leads to the accumulation of metabolism by products in this tissue, causing pain, inflammation, and fatigue (2) . Moreover, hypertonicity and hypersensitivity areas can be observed in a particular muscle zone, which allows identification of the so-called trigger points in a single muscle or in several muscle groups (4) . Furthermore, painful processes cause an intense release of angiogenic chemical mediators-such as phospholipids, which activate nociceptive receptors.…”

“…Dry needling (DN) has been used by several healthcare professionals in clinical practice for the treatment of TMD (4,6) . It is defined as a method where small-gauge filiform needles are used to stimulate myofascial trigger points (TrP), connective and muscular tissues in order to treat neuromusculoskeletal pain and movement disorders (4,6) .…”

Effects of Massage Therapy and Occlusal Splint Usage on Quality of Life and Pain in Individuals with Sleep Bruxism: A Randomized Controlled Trial

“…Massage therapy was performed by a physiotherapist who had undergone a training exercise for the administration of the protocol adapted from 14) , involving sliding and kneading maneuvers on the masseter and temporal muscles. Sliding consisted of a unidirectional movement in which part of the therapist's hand (mainly the fi ngertips) was used, moving from the proximal to the distal portion of the face with constant, progressive pressure compatible with the status of each tissue.…”