Read the Latest News

Repeated Injections of Botox into the Masseter Muscle... A Longitudinal Study

The authors of this study examined mandibular bone before and after subjects received Botox injections into each masseter muscle. These volunteers were healthy adults (22-48 years old), both male and female, who wanted injections to slim their faces.

Washington Post Article on TMD

The Washington Post recently featured an article on Temporomandibular Disorders. Below is an excerpt from that article and a link to the full story.

Partnering to Improve Chronic Pain Care

The National Institutes of Health (NIH) held three meetings this summer with the goal of developing the first public-private partnership (PPP) to develop safe and effective treatments for chronic pain, as well as new treatments for opioid addiction and overdose.

TMJ Patient RoundTable Project: Status Update

The TMJ Association is acting as the catalyst to develop the TMJ Patient RoundTable, a broad initiative to advance the interests of patients with temporomandibular disorders (TMD). It encompasses collaborations with all stakeholders and

Educational Brochures on Chronic Overlapping Pain Conditions

This brochure addresses what are Chronic Overlapping Pain Conditions (COPCs), how COPCs are diagnosed, the complexity of the chronic pain experience, and how to work with your health care provider to develop a treatment plan. It is available by postal ma

Painful Temporomandibular Disorder: Decade of Discovery from OPPERA Studies

  • Sep 21, 2016

Slade GD, Ohrbach R, Greenspan JD, Fillingim RB, Bair E, Sanders AE, Dubner R, Diatchenko L, Meloto CB, Smith S, Maixner W., Painful Temporomandibular Disorder: Decade of Discovery from OPPERA Studies, J Dent Res. 2016 Sep;95(10):1084-92. doi: 10.1177/0022034516653743. Epub 2016 Jun 23.

In 2006, the OPPERA project (Orofacial Pain: Prospective Evaluation and Risk Assessment) set out to identify risk factors for development of painful temporomandibular disorder (TMD). A decade later, this review summarizes its key findings. At 4 US study sites, OPPERA recruited and examined 3,258 community-based TMD-free adults assessing genetic and phenotypic measures of biological, psychosocial, clinical, and health status characteristics. During follow-up, 4% of participants per annum developed clinically verified TMD, although that was a "symptom iceberg" when compared with the 19% annual rate of facial pain symptoms. The most influential predictors of clinical TMD were simple checklists of comorbid health conditions and nonpainful orofacial symptoms. Self-reports of jaw parafunction were markedly stronger predictors than corresponding examiner assessments. The strongest psychosocial predictor was frequency of somatic symptoms, although not somatic reactivity. Pressure pain thresholds measured at cranial sites only weakly predicted incident TMD yet were strongly associated with chronic TMD, cross-sectionally, in OPPERA's separate case-control study. The puzzle was resolved in OPPERA's nested case-control study where repeated measures of pressure pain thresholds revealed fluctuation that coincided with TMD's onset, persistence, and recovery but did not predict its incidence. The nested case-control study likewise furnished novel evidence that deteriorating sleep quality predicted TMD incidence. Three hundred genes were investigated, implicating 6 single-nucleotide polymorphisms (SNPs) as risk factors for chronic TMD, while another 6 SNPs were associated with intermediate phenotypes for TMD. One study identified a serotonergic pathway in which multiple SNPs influenced risk of chronic TMD. Two other studies investigating gene-environment interactions found that effects of stress on pain were modified by variation in the gene encoding catechol O-methyltransferase. Lessons learned from OPPERA have verified some implicated risk factors for TMD and refuted others, redirecting our thinking. Now it is time to apply those lessons to studies investigating treatment and prevention of TMD.  

The full article is available at: http://jdr.sagepub.com/content/95/10/1084.full.pdf+html.  

TMJ Disorders

Comments:

Login or Register to add Comment