Abstract
Abstract Introduction: Temporomandibular joint disorders (TMD or TMJD) involve clinical problems and symptoms affecting the temporomandibular joint (TMJ) and associated structures. The temporomandibular joints are anatomically connected to the cervical region, where cervical spine movements occur simultaneously to masticatory muscle activation and jaw movements. Objective: Our study sought to assess the relationship between the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD), surface electromyography (sEMG) of the masticatory muscles, posture and cervical flexibility in women with TMD. Method: Fifty women with an average age of 27.0 ± 6.37 years, diagnosed with TMD according to RDC/TMD, were assessed for craniocervical posture, cervical flexibility and sEMG of the masticatory muscles. Results: There were no differences in jaw function limitations, depression, pain level and its interference in work ability and daily activities, posture and sEMG between TMD diagnoses or between muscle classification (p > 0.05). Depression scores were higher among participants with biarticular dysfunction (p = 0.023). The group with bruxism exhibited a higher pain level at assessment (p = 0.001) and a greater reduction in work ability (p = 0.039). Subjects with muscular and mixed TMD showed less cervical rotation to the right when compared with those with articular TMD. Conclusion: There was no difference in posture or sEMG values for TMD diagnoses, joint and muscle dysfunctions and the presence of bruxism. Muscle dysfunction is associated with reduced cervical rotation to the right. Jaw function limitations did not interfere in posture or sEMG and depression was associated with pain.
Highlights
Temporomandibular joint disorders (TMD or TMJD) involve clinical problems and symptoms affecting the temporomandibular joint (TMJ) and associated structures
Our study sought to assess the relationship between the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/Temporomandibular disorder (TMD)), surface electromyography of the masticatory muscles, posture and cervical flexibility in women with TMD
Depression and pain assessed by RDC/TMD Axis II showed no differences regarding TMD diagnoses and muscle dysfunction
Summary
Temporomandibular joint disorders (TMD or TMJD) involve clinical problems and symptoms affecting the temporomandibular joint (TMJ) and associated structures. Temporomandibular disorder (TMD) is an umbrella term that covers a set of clinical signs and symptoms involving the temporomandibular joint (TMJ), masticatory (chewing) muscles and associated structures [1,2,3,4,5,6]. Despite the scarce data on the economic impact of TMD, it is expected to have an impact given the set of symptoms and presence of pain [6,7] The physiopathology of this disorder is unclear and its etiology multifactorial, including joint trauma, occlusal discrepancies, joint hypermobility, skeletal problems, bruxism (teeth grinding), internal TMJ disorders, parafunctional habits, psychosocial factors and emotional stress [4,6]. It often overlaps with other pain disorders [5] and, except for dental pain, is the most common cause of orofacial pain [1,3]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
