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The TMJ Association is pleased to partner with Inspire to bring you the TMJ Cafe, a free online support network and discussion community for those with Temporomandibular Disorders (TMD). We invite you to meet others like you, share experiences and tips for getting through the day, and give and receive support.

Sustained and Repeated Mouth Opening Leads to Development of Painful Temporomandibular Disorders Involving Macrophage/Microglia Activation in Mice

Temporomandibular disorder (TMD) is a set of heterogeneous musculoskeletal conditions involving the temporomandibular joint (TMJ) and/or the masticatory muscles. Up to 33% of the population has had at least one symptom of TMD with 5-10% of them requiring treatment. Common symptoms include limited jaw movement, joint sound, and pain in the orofacial area. Once TMD becomes chronic, it can be debilitating with comorbidities that greatly reduce one's overall quality of life. However, the underlying mechanism of TMD is unclear due to the multicausative nature of the disease.

Prevalence of TMD in Sjӧgren Syndrome Patients

Sjӧgren's Syndrome seems to play a role in temporomandibular joint disorders.

Early Molecular Response and Microanatomical Changes in the Masseter Muscle and Mandibular Head After Botulinum Toxin Intervention in Adult Mice

The Botox-injected masseters had greatly increased expression of genes involved in muscle atrophy at the 1 week time point compared to the control side muscles. At the end of the study, 2 weeks after injection, the Botox-injected masseters were about 20% smaller than the control side masseters, and the Botox-side condyles had lost about 40% of relative bone area compared to the control side condyles.

Centralized Pain in TMD: Is It All in the Head?

We are pleased to introduce Sophia Stone, a new contributor to The TMJ Association, whose passion is to separate TMD fact from TMD fiction. Sophia has a background in medicine and research and can draw on her personal experience as a TMD patient.

ARTHROTOMY

  • Jun 18, 2014

Arthrotomy, also known as Arthroplasty, is an open joint procedure done under general anesthesia in the hospital. The recovery is significantly longer, three to eight8 weeks, and more painful than the TMJ Arthrocentesis or TMJ Arthroscopy.

An incision is made similar to a face lift incision (along the ear), and the joint space is exposed for the surgeon to see. This allows for the removal of adhesions, osteophytes (bone spurs), fibrous or bony ankylosis (fusion), tumors, etc. This reshaping of the joint is called Arthroplasty.

The surgeon can also repair discs by suturing them into place (Discoplasty), remove discs (Discectomy), or implant anything from a temporalis muscle graft, to a rib. Some of the types of various procedures that are done through an open joint operation.

  • Discoplasty. This inovolves surgically putting the disc back into its normal position when it is displaced.
  • Discectomy. This provides disc removal. Some surgeons use a temporalis muscle or dermal graft to replace the disc.  Others do not put anything in its place.
  • Arthroplasty. Reshaping of the condyle and fossa when there are arthritic changes.
  • Temporalis Muscle Graft. A piece of your temple muscle (temporalis) is slid into the joint space to prevent bone on bone contact.
  • Temporary Silicone Implants. Silicone sheeting has been used in the past to act as a pseudo-disc. Silicone sheeting specifically marketed for the TMJ was voluntarily withdrawn from the market in 1993. After the TMJ implant fiasco of the early ninties, the FDA asked for pre-market approval on ALL devices to be implanted in the TMJ.  No company submitted the required safety testing or pre-market approval paperwork for silicone. If a doctor mentions using silicone, he is doing it off-label. Beware! The FDA says on its Consumer Information page, “FDA is presently working with manufacturers to appropriately label silicone sheeting with warnings against its use in the TMJ implant.”
  • Rib Grafts. These are used to replace the condyle.

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In Treating TMJ

To view or order a free booklet about TMJ Disorders, visit the National Institutes of Health website.

U.S. DEPARTMENT OF HEALTH & HUMAN SERVICES
National Institutes of Health
National Institute of Dental and Craniofacial Research
Office of Research on Women's Health