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. 2013 Nov 20;25(10):1331–1334. doi: 10.1589/jpts.25.1331

Table 1. Characteristics of adolescents according to presence of TMD.

without TMDn (%) with TMDn (%) Totaln (%)
Gender Male 16 (38.1%) 26 (61.9%) 42 (100%) *
Female 5 (12.8%) 34 (87.2%) 39 (100%)
Agea 14 6 (66.7%) 3 (33.3%) 9 (100%)
15 6 (18.2%) 27 (81.8%) 33 (100%)
16 5 (22.7%) 17 (77.3%) 22 (100%)
17 3 (25.0%) 9 (75.0%) 12 (100%)
18 1 (20.0%) 4 (80.0%) 5 (100%)
Angle Classificationa Class I 11 (28.2%) 28 (71.8%) 39 (100%)
Class II 1 (11.1%) 8 (89.9%) 9 (100%)
Class III 7 (36.8%) 12 (63.2%) 19 (100%)
Mixed 2 (14.3%) 12 (85.7%) 14 (100%)
Type of bite Normal 16 (28.1%) 21 (71.9) 57 (100%)
Open bite 3 (33.3%) 6 (66.7%) 9 (100%)
Crossbite 2 (13.3%) 13 (86.7%) 15 (100%)
Clicking sounds Absent 12 (40%) 18 (60%) 30 (100%) *
Present 9 (17.6%) 42 (82.4%) 51 (100%)
Headachea Absent 20 (40.8%) 29 (59.2%) 49 (100%) *
Present 1 (3.1%) 31 (96.9%) 32 (100%)
Facial patterna Dolichocephalic 20 (25.6%) 58 (74.4%) 78 (100%)
Mesocephalic 1 (33.3%) 2 (66.7%) 3 (100%)
Breathing pattern Nasal 15 (23.4%) 49 (76.6%) 64 (100%)
Oral 6 (35.3%) 11 (64.7%) 17 (100%)
Parafunctional habitsa Absent 15 (26.8%) 41 (73.2%) 56 (100%) *
Nail biting 3 (15.8%) 16 (84.2%) 19 (100%)
Teeth clenching 1 (50%) 1 (50%) 2 (100%)

aFisher's exact test, * Statistically significant, p<0.05. NS: not significant