Table 1.
Orthodontic findings: comparison of frequencies in mean population [14], children with DS [5]and adults with DS (present study). Avg. = average; CI = confidence interval
| frequency [%] | mean population | children with DS | adults with DS [avg (CI)] |
|---|---|---|---|
| frontal crowding maxilla | 41.9 | N/A | 28 (19.3–39) |
| frontal crowding mandibula | 62.9 | N/A | 27.3 (18.3–37.8) |
| frontal spacing maxilla | 15.1 | N/A | 37.5 (27.4–48.5) |
| frontal spacing mandibula | 9.2 | N/A | 35.2 (25.3–46.1) |
| overbite < 0 mm | 3.6 | 16.7 | 35.2 (25.3–46.1) |
| overbite = 0 mm | 5.9 | N/A | 33 (23.3–43.8) |
| increased overbite (> 3 mm) | 23.8 | N/A | 14.8 (8.1–23.9) |
| frontal crossbite | 4.2 | 66.7 | 40.9 (30.5–51.9) |
| overjet = 0 mm | 1.1 | N/A | 23.9 (15.4–34.1) |
| overjet > 4 mm | 36.8 | N/A | 4.5 (1.3–11.2) |
| crossbite right side | 14.8 | N/A | 51.7 (40.8–62.4) |
| crossbite left side | 14.9 | N/A | 55.7 (44.7–66.3) |
| open bite right side | 1.1 | N/A | 31.8 (22.3–42.6) |
| open bite left side | 0.9 | N/A | 33 (23.3–43.8) |
| orthodontic treatment | 26.7 | N/A | 46.2 (36.3–56.2) |