Airway parameters without mandibular advancement splint (MAS) and with MAS according to treatment outcome
| Responders (n=47) | Non-responders (n=22) | |||||
| Without MAS | With MAS | p Value* | Without MAS | With MAS | p Value* | |
| Total airway volume (cm3) | 16.1±0.8 | 18.1±1.0 | <0.001 | 17.5±1.2 | 18.1±1.3 | 0.48 |
| Minimum cross-sectional area (cm2) | 0.46±0.03 | 0.56±0.04 | 0.007 | 0.56±0.09 | 0.58±0.06 | 0.78 |
| Airway length (cm) | 9.3±0.1 | 9.2±0.2 | 0.37 | 9.4±0.2 | 9.3±0.2 | 0.053 |
| Velopharynx | ||||||
| Volume (cm3) | 5.4±0.4 | 6.4±0.4 | <0.001 | 6.2±0.6 | 6.7±0.6 | 0.27 |
| Antero-posterior dimensions (cm) | 1.11±0.04 | 1.15±0.05 | 0.19 | 1.18±0.07 | 1.19±0.06 | 0.78 |
| Lateral dimensions (cm) | 1.62±0.08 | 1.92±0.09 | <0.001 | 1.77±0.16 | 1.90±0.13 | 0.30 |
| Oropharynx | ||||||
| Volume (cm3) | 3.6±0.3 | 4.0±0.3 | 0.12 | 3.9±0.4 | 3.8±0.4 | 0.95 |
| Antero-posterior dimensions (cm) | 1.20±0.05 | 1.28±0.06 | 0.062 | 1.26±0.08 | 1.25±0.06 | 0.88 |
| Lateral dimensions (cm) | 2.16±0.10 | 2.30±0.10 | 0.027 | 2.38±0.15 | 2.42±0.15 | 0.81 |
| Hypopharynx | ||||||
| Volume (cm3) | 7.0±0.4 | 7.7±0.4 | 0.003 | 7.4±0.7 | 7.6±0.6 | 0.68 |
| Antero-posterior dimensions (cm) | 1.37±0.06 | 1.49±0.06 | 0.021 | 1.37±0.09 | 1.43±0.06 | 0.50 |
| Lateral dimensions (cm) | 2.51±0.10 | 2.58±0.09 | 0.19 | 2.49±0.15 | 2.38±0.14 | 0.36 |
Data are shown as means±SD.
↵* Without MAS compared with with MAS.