Table 4 The association between SDB and dental-maxillofacial growth
|  | Total | Non-SDB | SDB | Prevalence of SDB (%) | χ2 | P value |
|---|---|---|---|---|---|---|
Lateral facial profile | ||||||
Concave | 128 (3.8%) | 107 | 21 | 16.4 | 1.43 | 0.49 |
Upright | 2103 (61.8%) | 1744 | 359 | 17.1 | ||
Protruding | 1174 (34.4%) | 955 | 219 | 18.7 | ||
Mandible development | ||||||
Excessive | 52 (1.6%) | 44 | 8 | 15.4 | 6.82 | 0.03* |
Proper | 2409 (73.8%) | 2001 | 408 | 16.9 | ||
Retrusive | 802 (24.6%) | 634 | 168 | 20.9 | ||
Molar occlusion | ||||||
Class I | 2064 (63.4%) | 1718 | 346 | 16.8 | 4.44 | 0.11 |
Class II | 996 (30.6%) | 799 | 197 | 19.8 | ||
Class III | 198 (6.0%) | 160 | 38 | 19.2 | ||
Mandible plane angle | ||||||
Low | 203 (6.3%) | 163 | 40 | 19.7 | 0.71 | 0.70 |
Average | 2462 (76.3%) | 2031 | 431 | 17.5 | ||
High | 560 (17.4%) | 458 | 102 | 18.2 | ||