Table 5: Frequency of certain symptoms in the case group.

DailyWeeklySeldomNever

Headache10%35%40%15%
Locking0%17.5%22.5%60%
Tiredness of the face7.5%17.5%25%50%
Pain when opening wide and chewing7.5%45%25%22.5%
Difficulty opening wide7.5%10%32.5%50%
Clicking or popping17.5%22.5%22.5%37.5%
Crepitation0%5%5%90%