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Table 1 Bivariate analysis of the associations between desire for orthodontic treatment and types of malocclusion using the chi-square test

From: Factors associated with the desire for orthodontic treatment among Brazilian adolescents and their parents

  Desire for orthodontic treatment
  No n (%) Yes n (%) P value
Malocclusion    
   Absent 71 (34.6) 134 (65.4) <0.001C
   Present 15 (7.6) 182 (92.4)  
Missing tooth    
   None 87 (22.4) 302 (77.6) 0.047F
   One or more 0 (0.0) 14 (100.0)  
Anterior open bite    
   < 2 mm 84 (22.8) 284 (77.2) 0.050C
   > 2 mm 3 (8.6) 32 (91.4)  
Crowding    
   Without crowding 51 (36.7) 88 (63.3)  
   One crowded segment 28 (19.9) 113 (80.1) <0.001C
   Two crowded segments 8 (6.5) 115 (93.5)  
Upper anterior crowding    
   < 2 mm 70 (32.3) 147 (67.7) <0.001C
   > 2 mm 17 (9.1) 169 (90.9)  
Lower anterior crowding    
   < 2 mm 46 (29.7) 109 (70.3) 0.002C
   > 2 mm 41 (16.5) 207 (83.5)  
Anterior segment spacing    
   None 70 (22.4) 243 (77.6) 0.480C
   One or two segments 17 (18.9) 73 (81.1)  
Median diastema    
   < 2 mm 79 (21.9) 281 (78.1) 0.615C
   > 2 mm 8 (18.6) 35 (81.4)  
Anterior maxillary overjet    
   < 4 mm 81 (25.4) 238 (74.6) <0.001C
   > 4 mm 6 (7.1) 78 (92.9)  
Anterior mandibular overjet    
   No 85 (22.3) 297 (77.7) 0.273F
   Yes 2 (9.5) 19 (90.5)  
Molar relation    
   Normal 68 (27.0) 184 (73.0) 0.002 C
   Half cuspid 17 (12.2) 122 (87.8)  
   One cuspid 1 (9.1) 10 (90.9)  
  1. C Chi-square test
  2. F Fisher exact test