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. 2018 Feb 8;13(2):e0192254. doi: 10.1371/journal.pone.0192254

Table 2. Prevalence of symptoms of TMD according to the AAOP questionnaire (Curitiba, Paraná, Brazil, 2016).

Related Symptoms Yes
n (%)

Total Yes
n (%)
Girls Boys
TMD prevalence—AAOP questionnaire 206 (39.8) 120 (28.8) 326 (34.9)
Do you have difficulty, pain, or both when opening your mouth, for instance, when yawning? 33 (6.4) 13 (3.1) 46 (5.0)
Does your jaw “get stuck”, “locked”, or “go out”? 19 (3.7) 7 (1.7) 26 (2.8)
Do you have difficulty, pain, or both when chewing, talking, or using your jaws? 35 (6.8) 12 (2.9) 47 (5.1)
Are you aware of noises in the jaw joints? 108 (20.8) 65 (15.6) 173 (18.6)
Do you have pain in or near the ears, temples, or cheeks? 97 (18.7) 34 (8.2) 131 (14.1)
Do you have frequent headaches or neck aches? 139 (26.8) 56 (13.5) 195 (20.9)
Do you have frequent toothaches? 48 (9.3) 26 (6.3) 74 (8.0)
Have you had a recent injury in your head, neck, or jaws? 29 (5.6) 26 (6.3) 55 (6.1)
Have you been aware of any recent changes in your bite? 25 (4.8) 24 (5.8) 49 (5.9)
Have you been previously treated for unexplained facial pain or a jaw joint problem? 8 (1.5) 11 (2.6) 19 (97.8)

AAOP, American Academy of Orofacial Pain; TMD, temporomandibular disorder.