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. 2018 Mar-Apr;23(2):46–53. doi: 10.1590/2177-6709.23.2.046-053.oar

Table 2. Frequency of the types of malocclusion; Belo Horizonte; Brazil, 2015.

Malocclusion Frequency n (%)
Anterior crowding
No crowding 96 (35.6%)
One crowded segment 107 (39.6%)
Two crowded segments 67 (24.8%)
Anterior spacing
No spacing 51 (18.9%)
One segment with spacing 119 (44.1%)
Two segments with spacing 100 (37.0%)
Incisal diastema (mm)
<2 227 (84.1%)
≥2 43 (15.9%)
Larger anterosuperior irregularity (mm)
<2 212 (78.5%)
≥2 58 (21.5%)
Larger anteroinferior irregularity (mm)
<2 213 (78.9%)
≥2 57 (21.1%)
Maxillary anterior overjet (mm)1
<3 198 (73.3%)
≥3 65 (24.0%)
Mandibular anterior overjet (mm)
Absent 247 (91.5%)
Present 23 (8.5%)
Anterior open bite (mm)
Absent 250 (92.5%)
Present 20 (7.5%)
Anteroposterior molar relationship
Normal 205 (75.9%)
One-half cusp 65 (24.1%)

Note: 1 Maxillary anterior overjet does not amount to 100% due to seven cases of anterior crossbite.