Temporomandibular joint disorders' impact on pain, function, and disability
- PMID: 25572112
- PMCID: PMC4336155
- DOI: 10.1177/0022034514565793
Temporomandibular joint disorders' impact on pain, function, and disability
Abstract
The aim of this study was to determine the association between more advanced stages of temporomandibular joint (TMJ) intra-articular disorders ("TMJ intra-articular status"), representing a transition from normal joint structure to TMJ disc displacement with and without reduction (DDwR and DDwoR) to degenerative joint disease (DJD), and patient-reported outcomes of jaw pain, function, and disability ("TMD impact"). This cross-sectional study included 614 cases from the RDC/TMD Validation Project with at least one temporomandibular disorder (TMD) diagnosis. TMJ intra-articular status was determined by 3 blinded, calibrated radiologists using magnetic resonance imaging and computed tomography as one of normal joint structure, DDwR, DDwoR, or DJD, representing the subject's most advanced TMJ diagnosis. TMD impact was conceptualized as a latent variable consisting of 1) pain intensity (Characteristic Pain Index from the Graded Chronic Pain Scale [GCPS]), 2) jaw function (Jaw Functional Limitation Scale), and 3) disability (Disability Points from GCPS). A structural equation model estimated the association of TMJ intra-articular status with the latent measure TMD impact as a correlation coefficient in all TMD cases (n = 614) and in cases with a TMD pain diagnosis (n = 500). The correlations between TMJ intra-articular status and TMD impact were 0.05 (95% confidence interval [CI], -0.04 to 0.13) for all TMD cases and 0.07 (95% CI, -0.04 to 0.17) for cases with a pain diagnosis, which are neither statistically significant nor clinically relevant. Conceptualizing worsening of TMJ intra-articular disorders as 4 stages and characterizing impact from TMD as a composite of jaw pain, function, and disability, this cross-sectional study found no clinically significant association. Models of TMJ intra-articular status other than ours (normal structure → DDwR → DDwoR → DJD) should be explored.
Keywords: craniomandibular disorders; musculoskeletal system; myofascial pain syndromes; osteoarthritis; pain perception; temporomandibular joint dysfunction syndrome.
© International & American Associations for Dental Research.
Conflict of interest statement
The authors declare no potential conflicts of interest with respect to the authorship and/or publication of this article.
Figures
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Comment in
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Letter to the editor: Temporomandibular joint disorders' impact, research models, and implications for regenerative approaches.J Dent Res. 2015 Jun;94(6):863. doi: 10.1177/0022034515578911. Epub 2015 Mar 20. J Dent Res. 2015. PMID: 25795627 No abstract available.
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Response to letter to the editor, "Temporomandibular joint disorders' impact, research models, and implications for regenerative approaches".J Dent Res. 2015 Jun;94(6):864. doi: 10.1177/0022034515578912. Epub 2015 Mar 20. J Dent Res. 2015. PMID: 25795628 Free PMC article. No abstract available.
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No evidence of association between articular status and clinical symptoms in patients with temporomandibular joint disorders.J Am Dent Assoc. 2017 Apr;148(4):e21. doi: 10.1016/j.adaj.2016.12.029. Epub 2017 Feb 16. J Am Dent Assoc. 2017. PMID: 28215435 No abstract available.
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