Table 2. Experimental abutment screw groups.
| Groups | Number of threads | Abutment screw length |
|---|---|---|
| EH 12.5 | 12.5 | 5.0 mm Original screw length |
| EH 6.5 | 6.5 | 2.6 mm |
| EH 3.5 | 3.5 | 1.4 mm |
| EH 2.5 | 2.5 | 1.0 mm |
| IH 6.5 | 6.5 | 2.6 mm Original screw length |
| IH 5.0 | 5.0 | 2.0 mm |
| IH 3.5 | 3.5 | 1.4 mm |
| IH 2.5 | 2.5 | 1.0 mm |