الفهرس | Only 14 pages are availabe for public view |
Abstract Background: Temporomandibular dysfunction (TMD) is a major and complicated health problem affects 20-25% of the population that affects the temporomandibular joint (TMJ) and muscles of mastication, resulting in pain and disability. Objective: to investigate the effect of myogenic and disc displacement TMD on cervical proprioception and maximum cervical isometric muscle strength among adults. Methodology: this study includes three groups; twenty-two participants of both genders in each group; myogenic (group A), disc displacement (group B) diagnosed according to revised Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) algorithm and healthy subjects (group C) who had no problems in the TMJ or facial pain. The pain intensity was assessed by the Arabic version numerical pain rating Scale, baseline bubble inclinometer was used to assess the TMJ joint position sense (JPS) and the Lafayette Hand held dynamometer was used to assess the cervical isometric muscle strength. Results: There was a statistically significant difference between the TMD groups and healthy group in the mean value of joint repositioning error (JRE) and cervical isometric muscle strength except the flexor and extensor muscles in the myogenic group. Weak correlation exists between the pain intensity and JRE. Conclusion: The temporomandibular disorders have a significant negative effect on cervical proprioception and cervical isometric muscle strength except flexor and extensor strength in myogenic group. Then each group of the TMDs requires specific assessment of the associated cervical spine problems and accordingly the suitable treatment selected. |