Research Article
The Need for Orthodontic Treatment among Vietnamese School Children and Young Adults
Table 1
Distribution of molar relationship, AC, DHC, and malocclusion in relation to gender and age group.
| | Variables | (%) | Gender | value | Age groups | value | | Female | Male | 12 | 18 | | (%) | (%) | (%) | (%) |
| | Angle relationship | | | | | | | | | Class I | 268 (67) | 158 (59) | 110 (41) | 0.79 | 144 (72) | 124 (62) | 0.03* | | Class II | 70 (17.5) | 41 (58.6) | 29 (41.4) | 0.99 | 35 (17.5) | 35 (17.5) | 1.00 | | Class III | 62 (15.5) | 35 (56.5) | 27 (43.5) | 0.72 | 21 (10.5) | 41 (20.5) | 0.006* | | Aesthetic Component (AC) | | | | | | | | | No/little need | 309 (77.2) | 184 (59.5) | 125 (40.5) | 0.43 | 156 (78) | 153 (76) | 0.72 | | Moderate need | 65 (16.3) | 30 (46.2) | 35 (53.8) | 0.02* | 35 (17.5) | 30 (15) | 0.49 | | Definite need | 26 (6.5) | 20 (76.9) | 6 (23.1) | 0.04* | 9 (4.5) | 17 (8.5) | 0.10 | | Dental Health Component (DHC) | | | | | | | | | No/little need | 211 (52.8) | 115 (54.5) | 96 (45.5) | 0.86 | 120 (60) | 91 (45.5) | 0.04* | | Moderate need | 90 (22.5) | 60 (66.7) | 30 (33.3) | 0.74 | 42 (21) | 48 (24) | 0.47 | | Definite need | 99 (24.7) | 59 (59.6) | 40 (40.4) | 0.79 | 38 (19) | 61 (30.5) | 0.08 | | Increased overjet (>3.5 mm) | 145 (36.3) | 71 (49) | 74 (51) | 0.08 | 93 (46.5) | 52 (26) | 0.000* | | Contact point displacements (>1 mm) | 216 (54) | 131 (60.6) | 85 (39.4) | 0.345 | 87 (43.5) | 129 (65) | 0.000* | | Increased overbite (>3.5 mm) | 105 (26.3) | 55 (52.4) | 50 (47.6) | 0.138 | 62 (31) | 43 (21.5) | 0.03* | | Crossbite | 91 (22.8) | 57 (62.6) | 34 (37.4) | 0.362 | 30 (15) | 61 (30.5) | 0.000* |
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Significant differences in -test results with 95% confidence interval.
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