Table 1. Shows the composition, batch number, and manufacturer of materials used in this study.
| Material | Manufacturer Lot number | Composition | Application |
|---|---|---|---|
| Relyx U200 | (3M ESPE, Neuss, Germany) 4957491 | Base paste: glass powder treated with silane, 2- propenoic acid, 2-methyl 1,10- (1-[hydroxymetil]-1,2- ethanodlyl) ester dimethacrylate, triethylene glycol dimethacrylate (TEGDMA), silica treated silane, glass fiber, sodium persulfate and per-3,5,5-trimethyl hexanoate t-butyl; catalyst paste: glass powder treated with silane, substitute dimethacrylate, silica-treated silane, sodium ptoluenesulfonate, 1-benzyl-5- phenyl-acid barium, calcium, 1,12-dodecane dimethacrylate, calcium hydroxide, and titanium dioxide | Apply the cement after mixing on the ceramic surface; seat the restoration gently onto the preparation allowing the cement to flow from all sides, then press. All samples were put under a static load, waiting for 60 s; during this time we clean the excess cement, then light cure for 20 s from each side (60 s in total) |
| Maxcem Elite Chroma | (Kerr, Scafati, Italy) 7205841 |
HEMA, GDM, UDMA, 1,1,3,3- tetramethylbutyl hydroperoxide TEGDMA, fluoroaluminosilicate glass, GPDM, barium glass filler, fumed silica (69 wt %)) | Apply the cement after mixing on the ceramic surface; seat the restoration gently onto the preparation allowing the cement to flow from all sides, then press. All samples were put under a static load, waiting for 60 s; during this time we clean the excess cement, then light cure for 20 s from each side (60 s in total) |
| Nexus NX3 dual-cure | (Kerr, Scafati, Italy) 7233567 |
Uncured methacrylate ester monomers, HEMA, PTU, CHPO, free tertiary amines and benzoyl peroxide, inert mineral fillers, titanium dioxide, radiopaque agent, and pigments | Apply the cement after mixing on the ceramic surface; seat the restoration gently onto the preparation allowing the cement to flow from all sides, then press. All samples were put under a static load, waiting for 60 s; during this time we clean the excess cement, then light cure for 20 s from each side (60 s in total) |