Table 1.
Summary of the crown materials used in this study.
| Crown Materials (N = 28) |
Chemical Composition | Translucency | Manufacturer | Reference |
|---|---|---|---|---|
| AmannGirrbach (n = 7) |
ZrO2 Y2O3: 4–5.6% HfO2: ≤5% Al2O3: ≤0.5% Al2O3, Other oxides including Silicon oxide: <1% |
30% | Amann Girrbach GmbH, Pforzheim, Germany | [26] |
| Cercon HT (n = 7) |
ZrO2 Y2O3: 5% HfO2: <3% Al2O3, Other oxides including Silicon oxide: <1% |
41% | Dentsply Sirona, Bensheim, Germany | [2] |
| Cercon XT (n = 7) |
ZrO2 Yttrium oxide (Y2O3): 9% HfO2: <3 % Al2O3, Other oxides including Silicon oxide: <1% |
49% | Dentsply Sirona, Bensheim, Germany | [27] |
| Vita YZ XT (n = 7) |
ZrO2 Yttrium oxide: 8–10% HfO2: 1–3% Al2O3, Other oxides including Silicon oxide: <1% |
50% | Zahnfabrik, Bäd Sackingen, Germany | [28] |
ZrO2 = Zirconium oxide, Y2O3 = Yttrium oxide, HfO2 = Hafnium oxide, Al2O3 = Aluminium oxide.