الفهرس 
Indirect compositesOnly 14 pages are availabe for public view
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Abstract
The purpose of this in vitro study was to evaluate the fracture resistance of premolars restored with inlay restoration materials using Computer-Aided Design /Computer -Aided Manufacturing (CAD/CAM). A total of thirty-two non-carious human maxillary premolar teeth were mounted in an acrylic block (2 mm below the cement-enamel junction). Twenty-four specimens received an operator prepared Class II MOD cavities without proximal boxes. The pulpal floor was at a depth of 2 mm from the deepest point fissure to the cavity floor and an isthmus width of 3 mm buccolingually. All specimens were divided equally into four main groups (8 teeth each); group I: acting as (positive control group) of unprepared teeth. group II: was (negative control group) with prepared and unrestored mesiooclusso- distal (MOD) class II cavity. group III: was restored with resin nano-ceramic Grandio blocks CAD/CAM blocks. group IV: was restored with hybrid ceramic Vita Enamic CAD/CAM blocks.