Table 4.
Duration of wear of retainer
| Characteristic | Frequency (n=229) | |
|---|---|---|
| Fixed retainer removal after certain period | ||
| Yes | 99 (43.2) | |
| No | 130 (56.8) | |
| Full time wear of removable retainer | ||
| Yes | 195 (85.2) | |
| No | 34 (14.8) | |
|
| ||
| Total time period for full time wear of removable retainer | Maxilla | Mandible |
|
| ||
| <3 months | 4 (2.1) | 9 (4.6) |
| 3-9 months | 84 (43.1) | 84 (43.1) |
| 10 months-2 years | 93 (47.7) | 85 (43.6) |
| >2 years | 14 (7.2) | 17 (8.7) |
| Total | 195 (100) | 195 (100) |
|
| ||
| Average number of hours per day -partial time wear of removable retainer (h) | Maxilla | Mandible |
|
| ||
| 0-8 | 11 (32.4) | 8 (23.5) |
| 9-16 | 19 (55.9) | 21 (61.7) |
| 16-19 | 4 (11.7) | 5 (14.8) |
| Total | 34 (100) | 34 (100) |
|
| ||
| Total duration of wear of retainer | Removable retainer | Fixed retainer |
|
| ||
| <2 | 155 (67.7) | 38 (16.6) |
| 2-5 | 50 (21.8) | 96 (41.9) |
| >5 | 9 (3.9) | 35 (15.3) |
| Life time/permanent | 15 (6.6) | 60 (26.2) |
Total number’n’>229 and percentage > 100 are higher because of combinations