Ultra-translucent zirconia processing and aging effect on microstructural, optical, and mechanical properties.

Objectives: To evaluate the effect of the ceramic processing and aging method on the microstructure, optical, and mechanical properties of a third generation ultra-translucent zirconia, yttria partially stabilized zirconia (5Y-PSZ).

Methods: In-house discs were obtained through uniaxial and isostatic pressing an ultra-translucent Y-PSZ powder and sintering at 1450 °C for 2 h. As control, a commercial disc was milled from pre-sintered blocks fabricated with the same 5Y-PSZ powder through isostatic pressing and sintered under the same protocol.

Physicochemical and mechanical characterization of a fiber-reinforced composite used as frameworks of implant-supported prostheses.

Objectives: To characterize the physicochemical and mechanical properties of a milled fiber-reinforced composite (FRC) for implant-supported fixed dental prostheses (FDPs).

Methods: For FRC characterization, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction, Fourier-transformed infrared spectrometry, simultaneous thermogravimetric analysis and differential scanning calorimetry were performed. For fatigue testing, 3-unit FRC frameworks were fabricated with conventional (9 mm connector area) and modified designs (12 mm connector area and 2.

Metastasis of breast cancer to major duodenal papilla.

Metastasis is an infrequent cause of tumor involvement of the major duodenal papilla and of cholestasis. We report a case of obstructive jaundice due to a metastatic breast carcinoma to the major duodenal papilla, and assess curative and palliative treatment that interventional endoscopy can offer.