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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Can Concomitant Masticatory Muscle Contraction Interfere with Temporomandibular Joint Arthralgia Evaluation?

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Poluha, Rodrigo Lorenzi [1] ; Canales, Giancarlo De la Torre [1] ; Bonjardim, Leonardo Rigoldi [2] ; Rodrigues Conti, Paulo Cesar [1]
Total Authors: 4
[1] Univ Sao Paulo, Bauru Sch Dent, Dept Prosthodont, Bauru Orofacial Pain Grp, Bauru, SP - Brazil
[2] Univ Sao Paulo, Bauru Sch Dent, Dept Biol Sci, Bauru Orofacial Pain Grp, Bauru, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: JOURNAL OF ORAL & FACIAL PAIN AND HEADACHE; v. 35, n. 1, p. 72-76, WIN 2021.
Web of Science Citations: 0

Aims: To investigate the effect of masticatory muscle contraction on the pressure pain threshold (PPT) of the lateral pole of the temporomandibular joint (TMJ) in patients with TMJ arthralgia and in asymptomatic individuals. Methods: A total of 72 individuals divided into two groups (group 1: patients with unilateral TMJ arthralgia {[}n = 36]; group 2: control group, asymptomatic individuals {[}n = 36]) were compared. The PPT of the lateral pole of the TMJ with and without concomitant masticatory muscle contraction was determined using a digital algometer in both groups. Paired and independent Student t test were used to compare the data within and between groups, respectively. A 5% significance level was used for all tests. Results: Higher TMJ PPT values with concomitant masticatory muscle contraction were found in both groups (P < .001). The amount of increase in PPT with contracted muscles was not significantly different between groups (P = .341), but the TMJ arthralgia group had significantly lower PPT values than the control group regardless of muscle contraction status (P < .001). Conclusion: Concomitant masticatory muscle contraction significantly increased the PPT of the lateral pole of the TMJ in relation to relaxed muscles, regardless of the presence of arthralgia. (AU)

FAPESP's process: 17/21674-0 - Comparison of the effectiveness of botulinum toxin type A in patients with refractory chronic orofacial pain according to different somatosensory profiles
Grantee:Giancarlo de La Torre Canales
Support Opportunities: Scholarships in Brazil - Post-Doctorate