Today, on the 94th General and Exhibition of the International Association for Dental Research Session, researcher Sonia Sharma, University of Buffalo, NY , USA, presented a study entitled “additional features of jaw injury and TMT. the Oppera study” IADR General Session the carried out in conjunction with the 3rd Meeting of the Asia Pacific Region IADR and the 35th Annual Meeting of the IADR Korean Division.
In 2015 IADR General Session in Boston, Mass., USA, Richard Ohrbach, et al and Sharma et al showed characteristics of injury to the jaw and temporomandibular disorder incident (TMD), it is demonstrating that the jaw injury of any kind occurred more frequently in cases than in controls with TMD associated incidence odds ratio (IOR) = 4.8. This study investigated the types of injuries, the number of injuries and attribution bias in relation to the incidence of first occurrence of TMD pain.
Data were from the Oppera (Orofacial Pain: Prospective Evaluation and Risk Assessment) nested case-control study of the incidence of TMD in adults in the community were enrolled in four-US study sites. At baseline, participants reported no history of TMD and no facial injury in the last six months. During a mean follow-up of three years, participants completed three (monthly) quarterly monitoring questionnaires evaluating jaw injury and symptoms of TMD. They were reexamined symptomatic participants; TMD 233 incident cases and 176 controls were confirmed.
binary logistic regression models estimated IOR and associated confidence limits of 95% (95% CL). attribution bias was investigated in an exposure model lag that ruled the possible damage reported in the same quarter in which the incidence of TMD was determined.
Before his follow-up visit, 89 cases of TMD experienced injuries in any combination: Extrinsic 7.3%, 22.3% and 24.5% sustained yawn mouth opening. The increased incidence of TMD was associated with injuries due to extrinsic events (IOR = 8.8, 95% CI = 1.9,40.1), sustained opening (IOR = 5.6; 95% CI = 2.7,11.6) and yawns (IOR = 3.5, 95% CL = 1.8,6.8). Both a single lesion (IOR = 4.2; 95% CI = 2.2,8.4) and multiple lesions (IOR = 5.7 95% CL = 2.2,14.5) predicted a higher incidence of events without injury TTM (IOR = 1, 4; 95% CI = 0.8,2.3). Effects of the injury in the incidence of TMD to be significant in the model lagged exposure. (IOR = 2.6; 95% CI = 1.6,4.1)
The three types of injuries were associated with the first episode of TMD and one injury was enough to increase the risk of developing TMD pain. There was evidence of only modest attribution bias.
This research was supported by the National Institutes of Health National Institute of Dental and Craniofacial Research grants U01-DE017018 and DE023526 T32-.
“Further characteristics of jaw injury and TMD: The OPPERA study” is replublished article from medicalxpress.com here: http://medicalxpress.com/news/2016-06-characteristics-jaw-injury-tmd-oppera.html