Temporomandibular Disorder Clinical Trial
Official title:
Jaw Kinematics and Muscle Activation in Patients With Non-specific Chronic Neck Pain
Verified date | September 2020 |
Source | National Yang Ming University |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Observational [Patient Registry] |
Temporomandibular disorder (TMD) is a collective term for pain and dysfunction of the masticatory muscles and temporomandibular joint (TMJ). Typical signs and symptoms of TMD includes regional pain, noises from the TMJs and limitations in jaw movements. Altered jaw kinematics and muscle activity have also been reported. TMD may be related to neck problems. Over 50% of patients with TMD suffer from nonspecific neck pain. Patients with TMD often have symptoms over neck, including upper cervical spine movement impairment and reduced cervical muscles endurance. Conversely, TMD may also develop in patients with neck pain. Twenty to thirty-three percent of patients with neck pain also have TMD. Subjects with neck pain present with a twofold higher prevalence of TMD than those without neck pain. In patients with neck pain, the development or perpetuation of TMD may be due to the anatomical connection between TMJ and neck: neck posture affects the mandible position and sensory inputs from the cervical-mandibular region converge at the trigemino-cervical nucleus. Early identification of TMD is essential but to our knowledge, no study has investigated whether patients with neck pain demonstrate altered jaw movement and muscle activity, which is associated with TMD. The purposes of this proposal are to compare the jaw kinematics, muscle activity and muscle sensitivity in healthy individuals and patients with non-specific chronic neck pain (NCNP). This study also aimed to investigate the relationship between forward-head posture and the jaw kinematics, muscle activity as well as muscle sensitivity. With a cross-sectional exploratory study design, 30 healthy control subjects and 30 subjects with NCNP will be recruited. Clinical assessments will include cervical range of motion (CROM), pressure pain threshold (PPT) over the cervical-mandibular region and the cranial-cervical angle (CCA). Jaw kinematics will be measured by Ultrasonic Jaw Motion Analyzer (Zebris GmbH) during functional jaw movements. Muscle activities are record from bilateral anterior temporalis, masseter, sternocleidomastoid muscle and upper trapezius by surface electromyography during resting and clenching.
Status | Completed |
Enrollment | 44 |
Est. completion date | August 30, 2020 |
Est. primary completion date | August 30, 2020 |
Accepts healthy volunteers | |
Gender | All |
Age group | 20 Years to 60 Years |
Eligibility | Inclusion Criteria (nonspecific chronic neck pain group): - Aged between 20 to 65 years old - Mechanical pain that provoked by sustained neck postures or specific neck movements without any identifiable diseases or structure anomalies - Chronic or recurrent neck pain of at least 3 months duration - Minimum of 3 points on the numerical pain rating scale (NPRS) over cervical region - Without any pain, clicking or range of motion limitation over TMJ Inclusion Criteria (healthy control group): - Age (± 5 years) and gender match to NCNP group - No pain or clinical pathology involving the masticatory system or cervical spine for at least one year prior to the start of the study Exclusion Criteria (both groups): - Serious injury, tumor, infection - Recent cervical-cranial surgery - Neurologic involvement - Inflammatory rheumatic diseases - Pregnancy - Nonmechanical cause of neck pain (e.g. herniated disk, spinal fractures) - Had been diagnosed with spinal conditions (e.g. spondylolisthesis) - Shoulder pain within 1 years - Loss of posterior tooth - Dental pain or periodontal problems - Orthodontic, orofacial myofunctional or TMD treatment within 3 months - Use of analgesic or anti-in?ammatory drugs within 3 days |
Country | Name | City | State |
---|---|---|---|
Taiwan | National Yang-Ming University | Taipei |
Lead Sponsor | Collaborator |
---|---|
National Yang Ming University | Cheng-Hsin General Hospital |
Taiwan,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Jaw maximum range of motion | Including maximum mouth opening, lateral right, lateral left, and protrusion, which will be described with millimeter (mm) | Immediately during the experiment | |
Primary | Jaw velocity | Jaw opening and closing velocity, which will be described with millimeter per second (mm/s) | Immediately during the experiment | |
Primary | Condylar rotation | The rotation will be described with degree (°). | Immediately during the experiment | |
Primary | Condylar translation | Including condylar translation and condylar path length, which will be described with millimeter (mm) | Immediately during the experiment | |
Primary | Muscle activation | The root mean square of electromyography (EMG) data of the masseter, anterior temporalis, sternocleidomastoid muscle and upper trapezius will be normalized by the maximum voluntary contraction amplitude (percentage of maximal voluntary contraction, %). | Immediately during the experiment | |
Secondary | Cervical and jaw range of motion | Including range of motion of cervical flexion, cervical extension, cervical side-bending,cervical rotation and cervical flexion-rotation as well as maximum mouth opening, jaw lateral right, jaw lateral left, protrusion. The motion will be described with degree (°). | Immediately during the experiment | |
Secondary | Pressure pain threshold | Pressure pain threshold of masseter, anterior temporalis, sternocleidomastoid muscle, upper trapezius and suboccipitals will each be averaged and will be described with kg/cm2. | Immediately during the experiment | |
Secondary | Cranial-cervical angle | Cranial-cervical angle will be measured as the included angle between the ear lobe, C7 spinous process and the horizontal line and will be described with degree (°). | Immediately during the experiment |
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