Table 1 Demographics and TMD diagnosis based on DC/TMD among bruxers and nonbruxers.

From: Comparison of ultrasonography-based masticatory muscle thickness between temporomandibular disorders bruxers and temporomandibular disorders non-bruxers

 

TMD_nonbruxers (n = 66)

Mean ± SD or n (%)

TMD_bruxers (n = 30)

Mean ± SD or n (%)

p-value

Demographics

 Age (years)a

41.27 ± 17.92

38.51 ± 17.95

0.486

 Sexb

  Male

19 (28.8%)

10 (33.3%)

0.641

  Female

47 (71.2%)

20 (66.7%)

 

Pain characteristics

 VASa

3.52 ± 1.87

2.83 ± 1.66

0.078

 Pain duration (months)a

20.91 ± 36.06

13.91 ± 22.19

0.247

 Chronicityb

36 (54.5%)

20 (66.7%)

0.372

 Preauricular painb

22 (33.3%)

11 (36.7%)

0.458

TMD diagnosis based on DC/TMD

 Arthrogenous TMDb

26 (41.3%)

6 (20.7%)

0.049*

 Myogenous TMDb

15 (23.8%)

16 (53.3%)

0.003**

 Mixed TMDb

25 (37.9%)

8 (26.7%)

0.201

  1. aResults were obtained using t-tests.
  2. bResults were obtained using a two-sided chi-square analysis. TMD, temporomandibular disorder; VAS, visual analog scale; Chronicity, chronic state that has elapsed more than 6 months from the onset of TMD symptoms; DC/TMD, diagnostic criteria for TMD. Statistical significance was set at p < 0.05. *p < 0.05. **p < 0.01. The significant values are indicated in bold font.
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