Figure 1

Figure 2

Figure 3

Comparison of the general data, ultrasound-assessed resting tongue posture, and the prevalence of articulation disorders between the anterior open bite group (N = 32) and the control group (N = 43)
| Parameter | AOB group (N = 32) | Control group (N = 43) | p |
|---|---|---|---|
| Male gender For categorical variables number and percentage is given | 17 (53%) | 20 (46%) | 0.571 |
| Age (years) for numerical mean and SD | 4.9 (1.0) | 4.3 (0.3) | < 0.001 |
| Articulation disorder (speech therapist’s assessment) | 27 (84%) | 10 (23%) | < 0.001 |
| Improper resting tongue posture (3DUS) | 26 (81%) | 11 (26%) | 0.001 |
Comparison of the general data and the parents’ assessment of the child’s nasal breathing, the possible articulation disorders and the necessity for speech therapy between the group of children with anterior open bite (AOB) (N = 32) and the rest of the pediatric population without anterior open bite (N = 414)
| Parameter | AOB (N = 32) | Without AOB (N = 414) | P |
|---|---|---|---|
| Age (years)1 | 4.9 (1.0) | 5.0 (0.9) | 0.548 |
| Nasal breathing, day2 | 31 (96.9%) | 348 (84.1%) | 0.056 |
| Nasal breathing, night | 29 (90.6%) | 350 (84.5%) | 0.382 |
| Articulation disorder (parental assessment) | 27 (84.4%) | 108 (26.1%) | < 0.001 |
| Necessity for speech therapy | 13 (40.6%) | 99 (23.9%) | 0.018 |