“…For this in-vitro study, forty plates of Vita Enamic ceramic were prepared from polymer infiltrated ceramics (VITA ENAMIC blocks 3M2-HT-EM-14,VITA-Zahnfabrik, Bad Säckingen, Germany) into the dimensions (10mmX7mm and 2mm in thickness) by aid of a low speed, water-cooled diamond saw (Isomet 4000, buchler ltd, Lake Bluff, IL, USA). (33) All plates were inspected under microscope for presence of any cracks, then treated with air-borne particle abrasion using 50µm Al 2 O 3 (Basic Eco SandBlaster, Renfert, Hilzingen, Germany ), under 2.5 bars pressure for (3654) 15sec. and a distance of 10mm, and cleaned ultrasonically.…”