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

IF 1.9 3区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE Journal of Oral & Facial Pain and Headache Pub Date : 2021-12-01 DOI:10.11607/ofph.2759

Rodrigo Lorenzi Poluha, Giancarlo De la Torre Canales, Leonardo Rigoldi Bonjardim, Paulo César Rodrigues Conti

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引用次数: 3

Abstract

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.

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伴随咀嚼肌收缩是否会干扰颞下颌关节痛的评估?

目的:探讨咀嚼肌收缩对颞下颌关节痛患者和无症状患者颞下颌关节(TMJ)外侧极压力痛阈(PPT)的影响。方法:将72例患者分为两组(1组:单侧TMJ关节痛患者[n = 36];第二组:对照组，无症状个体[n = 36])进行比较。两组患者均采用数字测定仪测定伴有和不伴有咀嚼肌收缩的颞下颌关节外侧极PPT。配对和独立学生t检验分别用于组内和组间数据的比较。所有检验均采用5%显著性水平。结果:两组患者均有较高的颞下颌关节PPT值，并伴有咀嚼肌收缩(P < 0.001)。肌肉收缩时PPT升高量各组间差异无统计学意义(P = .341)，但无论肌肉收缩状态如何，TMJ关节痛组PPT均显著低于对照组(P < .001)。结论:与松弛的肌肉相比，伴随的咀嚼肌收缩显著增加了颞下颌关节外侧极的PPT，无论是否存在关节痛。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Oral & Facial Pain and Headache DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

5.10

自引率

4.00%

发文量

期刊介绍： Founded upon sound scientific principles, this journal continues to make important contributions that strongly influence the work of dental and medical professionals involved in treating oral and facial pain, including temporomandibular disorders, and headache. In addition to providing timely scientific research and clinical articles, the journal presents diagnostic techniques and treatment therapies for oral and facial pain, headache, mandibular dysfunction, and occlusion and covers pharmacology, physical therapy, surgery, and other pain-management methods.