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Table 2 Variables and risk factors for temporomandibular disorders (TMD)

From: Temporomandibular disorders among medical students in China: prevalence, biological and psychological risk factors

Biological factor

r

p value

Static occlusion

r

p value

Psychological factor

r

p value

Age

0.050

0.172

Angle’s malocclusion

− 0.061

0.320

Depression

0.231

< 0.001

Gender

0.044

0.222

Anterior teeth overbite

0.166

< 0.001

Anxiety

0.355

< 0.001

Sleep bruxism

0.164

< 0.001

Anterior teeth overjet

0.110

0.002

Sleep disturbance

0.184

< 0.001

Awake bruxism

0.099

0.006

Posterior teeth crossbite

− 0.041

0.260

   

Empty chewing

0.192

< 0.001

Posterior scissor bite

0.055

0.135

   

Unilateral chewing

0.219

< 0.001

      

Chewing gum

0.079

0.030

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