About this trial
The study aims to examine the effects of transcutaneous non-invasive vagus nerve stimulation (nVNS) on symptoms and brain mechanisms in premenopausal women with temporomandibular disorders (TMD). Non-invasive vagus nerve stimulation (nVNS) is the most well researched and possibly the most effective non-invasive neuromodulation treatment for chronic pain conditions that targets the brain-gut-microbiome (BGM) axis.
Participants will be asked to come in for 2 in-clinic visits, at baseline and post treatment. Participants will also be asked to come in 2x/week for 8 consecutive weeks to receive the nVNS treatment. The in-clinic visits will include physical measures, blood draw, saliva sample, and brain MRI. Participants will be asked to collect a stool sample at home and answer online questionnaires regarding, mood, pain, and health behaviors at home, prior to the in-clinic appointments.
Eligibility criteria
Qualifiers
Ages 18-50
Premenopausal menstruating women*
Participants report or present with at least 1 of 3 cardinal signs of TMD: jaw pain, limited mouth opening, or TMJ noise.
Specific screening reveals clinical findings that require standard of care medically-indicated intra-articular procedure for management of symptoms including TMJ pain, intra-articular joint disorder leading to joint locking or limited mouth opening or displacement, and severe degenerative joint disease.
Disqualifiers
Medical condition, laboratory finding, or physical exam finding that precludes participation, such as systemic arthritides, juvenile idiopathic arthritis, idiopathic condylar resorption, connective tissue disorders, mandibular osteonecrosis, mandibular and condylar fractures, salivary gland disorders (incl. history of stones or swelling), neoplasms, neurologic/neuropathic, endocrine, or immune/autoimmune diseases and congenital or developmental disorders.
Pathologic processes found on imaging including neoplasm (Exception: disc displacements and osseous pathology including osteoarthritis/osteoarthrosis).
Radiation treatment to head and neck
Prior jaw or open TMJ (including contralateral joint) surgery including plication, chondroplasty, joint replacement, disectomy, and discoplasty.
Trial design
Treatments tested in this trial
- nVNS Treatment
Treatment groups
Locations
Sponsors and collaborators
Arpana Church
Lead sponsor
University of California, Los Angeles
Sponsor institution