Surface deterioration of monolithic CAD/CAM restorative materials after artificial abrasive toothbrushing.

Purpose: The purpose of this study was to evaluate the effect of abrasive toothbrushing on the surface properties of monolithic computer-assisted design and computer-assisted manufacturing (CAD/CAM) materials stored in food-simulating liquids (FSLs).

Materials And Methods: Fourty-eight disk-shaped test specimens of each material (Paradigm MZ100/PMZ, Lava Ultimate/LU, Vita Enamic/VE, and Vita Mark II/VMII) with a diameter of 10.0 mm and a thickness of 3.

Spark plasma sintered Al₂O₃-YSZ-TiO₂ composites: processing, characterization and in vivo evaluation.

Al2O3 and Al2O3-YSZ composites containing 3 and 5 wt.% TiO2 were prepared by spark plasma sintering at temperatures of 1350-1400°C for 300s under a pressure of 40 MPa. The grain growth of alumina was suppressed by the addition of YSZ.

Evaluation of hardness and fracture toughness, coupled with microstructural analysis, of zirconia ceramics stored in environments with different pH values.

The aim of this study was to evaluate the effects of pH changes in the oral cavity on the mechanical properties of zirconia and feldspathic ceramics. Bilayered zirconia-feldspathic samples were prepared from three different commercial brands of Y-TZP blocks: Zirkonzahn, Cercon, and Everest. Samples were stored in artificial saliva with different pH values (3.

Influence of zirconia base and shade difference on polymerization efficiency of dual-cure resin cement.

Purpose: The aim of this study was to investigate the polymerization efficiency of dual-cured resin cement beneath different shades of zirconia-based feldsphathic ceramic restorations.

Materials And Methods: Five translucent zirconia (Zirkonzahn) discs (4.0-mm diameter, 1.

The effect of two polishing pastes on the surface roughness of bis-acryl composite and methacrylate-based resins.

Statement Of Problem: A highly polished restoration surface is necessary to promote a plaque-free environment.

Purpose: The purpose of this study was to compare the surface roughness of 3 different bis-acryl composite-based and 3 different methyl methacrylate-based provisional crown and fixed partial denture resins after being polished with aluminum oxide and diamond paste.

Material And Methods: Six different materials were used (Iso-Temp, Protemp II, Structer 2, Dentalon Plus, Tab 2000 Kerr, Temdent).