Table 5.
Distribution of upper and lower FR failure patterns in each group over the 6-month follow-up.
| Group | Total | ||
|---|---|---|---|
| CAD/CAM | Conventional | ||
| Upper arch | |||
| Complete detachment from all teeth | 1 | 2 | 3 |
| Debonding at enamel-composite interface | 8 | 6 | 14 |
| Debonding at wire-composite interface | 5 | 7 | 12 |
| Retainer removed by clinician | 0 | 1 | 1 |
| Wire fracture | 5 | 4 | 9 |
| Total | 19 | 20 | 39 |
| Lower arch | |||
| Complete detachment from all teeth | 4 | 5 | 9 |
| Debonding at enamel-composite interface | 13 | 15 | 28 |
| Debonding at wire-composite interface | 6 | 6 | 12 |
| Retainer removed by clinician | 1 | 0 | 1 |
| Wire fracture | 2 | 0 | 2 |
| Total | 26 | 26 | 52 |
FR, fixed retainers.