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Journal of Dental Research
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Hypersensitivity to Mechanical and Intra-articular Electrical Stimuli in Persons with Painful Temporomandibular Joints

E.E. Ayesh1, T.S. Jensen2 and P. Svensson1,3,4,*

1 Department of Clinical Oral Physiology, School of Dentistry, University of Aarhus, Vennelyst Boulevard 9, DK-8000 Aarhus C, Denmark;
2 Department of Neurology and
3 Department of Oral Maxillofacial Surgery, Aarhus University Hospital, Denmark; and
4 Center for Sensory Motor Interaction, Aalborg University, Denmark


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  		Figure 1. Outline of quantitative sensory tests. (A) Distribution of the 11 sites used for assessment of pin-prick and tactile sensitivity. The sites are identified according to their distribution in relation to the central point over the TMJ (C): A = anterior, I = inferior, S = superior. (B) Numerical rating scale (NRS) scores of pin-prick and tactile stimulation of 11 sites on the painful and contralateral sides in persons with TMJ arthralgia compared with 2 randomized sides in healthy persons. Mean scores (± SEM) from 43 healthy individuals and 20 persons with TMJ arthralgia. *Significant differences between healthy individuals and persons with TMD arthralgia (P < 0.05).

 

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  		Figure 2. Pressure-Pain Threshold (PPT) and Tolerance (PPTOL) in healthy individuals (n = 43) and persons with TMD arthralgia (n = 20) on the painful and contralateral sides in persons with TMD arthralgia compared with 2 randomized sides in healthy individuals, and the index fingers of both groups. *Significant differences between painful and contralateral sides in persons with TMD arthralgia (P < 0.01). #Significant differences between persons without and those with TMD arthralgia (P < 0.001).

 

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  		Figure 3. Correlation plots between various clinical and QST measures (A–I) in persons with TMJ arthralgia (n = 20). NRS, numerical rating scale; PPT and PPTOL, pressure-pain threshold and tolerance; SDT, sensory detection threshold; PDT, pain detection threshold; SumT, summation threshold.

 

Journal of Dental Research, Vol. 86, No. 12, 1187-1192 (2007)
DOI: 10.1177/154405910708601209
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