Table 1.
Age distribution of panoramic patterns and depression of the maxillary sinus anterior wall on CT
| Age (years) |
Number of sinuses | Panoramic patterns of the diagonal line |
Mean of the wall depth (mm) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Age group | Mean | Invisible |
Obscure |
Clear |
|||||
| Number of sinuses | % | Number of sinuses | % | Number of sinuses | % | ||||
| <10 | 7.5 | 392 | 387 | 98.7 | 5 | 1.3 | 0 | 0 | 2.60 |
| 11–20 | 16.1 | 592 | 562 | 94.9 | 29 | 5.0 | 1 | 0.2 | 2.59 |
| 21–30 | 23.8 | 582 | 541 | 93.0 | 39 | 6.7 | 2 | 0.3 | 2.82 |
| 31–40 | 35.2 | 394 | 365 | 92.6 | 29 | 7.4 | 0 | 0 | 2.98 |
| 41–50 | 45.5 | 390 | 354 | 90.8 | 32 | 8.2 | 4 | 1.0 | 3.27 |
| 51–60 | 54.9 | 314 | 271 | 86.3 | 40 | 12.7 | 3 | 1.0 | 3.22 |
| 61–70 | 65.0 | 324 | 246 | 75.9 | 63 | 19.4 | 15 | 4.6 | 3.93 |
| 71–80 | 75.1 | 272 | 171 | 62.9 | 72 | 26.5 | 29 | 10.7 | 4.64 |
| >80 | 84.7 | 118 | 73 | 61.9 | 35 | 29.7 | 10 | 8.5 | 4.84 |
| Total | 37.8 | 3378 | 2970 | 87.9 | 344 | 10.2 | 64 | 1.9 | 3.18 |