Table 1 The incidence of the orthodontic problems as assessed by the DHC of the IOTN
From: Orthodontic treatment needs in the western region of Saudi Arabia: a research report
Orthodontic Problem | Incidence % | Grade 1 | Grade 2 | Grade 3 | Grade 4 | Grade 5 |
|---|---|---|---|---|---|---|
Pre/post-normal occlusion | 3 | Â | 3 | Â | Â | Â |
Displacement | 89.1 | 3.6 | 25.5 | 16.4 | 43.6 | Â |
Crossbite | 44.5 | Â | 14.5 | 13.6 | 16.4 | Â |
Open bite | 20 | Â | 9.1 | 6.4 | 4.5 | Â |
Overbite | 33.6 | Â | 18.2 | 8.2 | 7.3 | Â |
Overjet | 33.6 | Â | 16.4 | 9.1 | 5.5 | 2.7 |
Reverse overjet | 3.6 | Â | Â | Â | 2.7 | 0.9 |
Scissors bite | 10.9 | Â | Â | Â | 10.9 | Â |
Partially erupted | 9.1 | Â | Â | Â | 9.1 | Â |
Impaction | 8.2 | Â | Â | Â | Â | 8.2 |
Submerged deciduous | 0 | Â | Â | Â | Â | 0 |
Supernumerary | .9 | Â | Â | Â | 0.9 | Â |
Hypodontia | 3.6 | Â | Â | Â | 3.6 | 0 |
Cleft lip-Palate | 3.9 | Â | Â | Â | Â | 3.9 |