Table 1. The test groups, abbreviations, brands, batch numbers and manufacturers of the tested materials (N = 32).
| Test group | Abbreviation | Brand | Batch number / Lot number | Manufacturers information |
|---|---|---|---|---|
| Monolithic Zirconia | MZ (n = 8) | Zolid fx preshade | - | Amann Girrbach, Koblach, Austria |
| Lithium Disillicate | LD (n = 8) | IPS E.max | P15652 | Ivoclar Vivadent AG, Schaan, Principality of Liechtenstein |
| Ceramometal | CM (n = 8) | Porcelain fused to Metal | - | Ivoclar Vivadent AG, Schaan, Principality of Liechtenstein |
| Composite Resin | CR (n = 8) | Nano hybrid filtek z250 | N636355 | 3M ESPE, Dubai, United Arab Emirates |