| Group | Samples | Posts | Cement | Core material | Type of crown |
| I | 12 | Titanium passives (Komet, USA) | C&B | Enforce core | Metallic |
| II | 12 | Quartz fiber Aesthetiplus (Bisco, USA) | (Bisco, USA) | (Dentsply, USA) | Metallic |
| III | 12 | Glass fiber posts(Glassix, Nordin) | C&B | Enforce core | Metallic |
| IV | 12 | Natural teeth | (Bisco, USA) | Metallic |