Table 1. Experimental groups depending on the fabrication system and finish line configuration used in this study.
| Fabrication system | Composition | Finish line configuration |
|---|---|---|
| IPS e.max®press (IvoclarVivadent AG,Schaan, Liechtenstein) |
Lithium disilicate glass-ceramic | Deep chamfer (n=8) |
| Shoulder (n=8) | ||
| Prettau®Zirconia (Zirkonzahn GmbH; Gais, Italy) |
Presintered yttrium stabilized zirconium dioxide | Deep chamfer (n=8) |
| Shoulder (n=8) | ||
| ZENOSTAR®ZR translucent (Wieland Dental GmbH, Pforzheim, Germany) |
Deep chamfer (n=8) | |
| Shoulder (n=8) |