Skip to main content

Table 2 Temporomandibular Disorders (TMD) symptoms and signs and bite force measurement between the two pain groups

From: A case-control study about bite force, symptoms and signs of temporomandibular disorders in patients with idiopathic musculoskeletal pain syndromes

  Fibromyalgia Pain amplification syndrome Total % p value
n (40) 12 28 100%  
TMD symptoms (25) 9 16 62.5 p = 0.4774
 Pain in the face (13) 6 6 30 NS
 Pain during mastication (7) 1 6 17.5 NS
 Tiredness during mastication (18) 6 11 42.5 NS
 Soft tissue swelling over the TMJ (7) 5 2 17.5 p = 0.0175*
 TMJ sounds (8) 2 6 20 NS
TMD signs
 Pain on function (17) 6 10 40 NS
 Opening (14) 4 9 32.5 NS
 Protrusion (7) 2 5 17.5 NS
 Right laterotrusion (12) 5 6 27.5 NS
 Left laterotrusion (7) 3 4 17.5 NS
 Pain on palpation (36) 12 24 90 NS
 Number of painful sites
  0 (4) 0 4 10  
  1 (2) 0 2 5  
  2 (0) 0 0 0  
  3 (3) 0 3 7.5  
  4 (11) 4 7 27.5  
  5 (3) 2 1 7.5  
  6 (17) 6 11 42.5  
 Frequency of 4 or more painful sites (31) 100% 67.80% 77.5 p = 0.0375*
 Maximal mouth opening capacity (mean) 51.58 mm 47.85 mm   NS
Bite force (Newton)
 Anterior 154.6 133.3   NS
 Right side 344.9 334.9   NS
 Left side 343.7 357   NS
  1. N Newton, TMJ Temporomandibulat Joint, TMD Temporomandibular Disorders, NS not significant
  2. *statistically significant difference at p ≤ .05