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Table 2

Potential risk factors for temporomandibular joint disorders after oral and maxillofacial trauma.

Factors TMD(n=29) Non-TMD(n=31) P
Gender >0.05

Male 17 19

Female 12 12

Age (year) 42.3±11.2 44.1±12.6 >0.05

≤40 12 13

>40 17 18

Disorder of occlusal relationship <0.05

Positive 6 0

Negative 23 31

Open mouth habit <0.05

Positive 9 1

Negative 20 30

Hemi-mastication <0.05

Positive 12 3

Negative 17 28

Bruxism <0.05

Positive 7 1

Negative 22 30

Mental factors >0.05

Positive 4 0

Negative 25 31

History of orthodontic >0.05

Positive 3 1

Negative 26 30

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