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Technical complications in 6-year follow up period.
| Anterior region | Premolar region | |
|---|---|---|
| Abutment fracture | 0 | 0 |
| Abutment screw loosening | 0 | 1 (3.1%) |
| Abutment screw fracture | 0 | 0 |
| Fracture of crown framework | 0 | 0 |
| Fracture of veneering porcelain (chipping) | 0 | 2 (6.2%) |
| Crown loosening (decementation) | 3 (9.3%) | 0 |
| Occlusal wear | 0 | 1 (3.1%) |
