Specimens C, D, E, and F were fabricated by a direct technique.
The template was loaded with either a dough or paste
consistency of the material and pressed over the CAD CAM
die. The entire unit was held under firm hand pressure until
the materials had set.
The specimens were evaluated for defects. The defective
specimens were discarded. The chosen specimens of all groups
were trimmed and finished with abrasive stones and 300-grit
sandpaper. The specimens were polished with a pumice/water
mixture and finished with diamond polishing paste. The entire
procedure was performed by the same person for standardization
(Figs. 4 and 5)