The mechanical properties of six 35Ag-30Pd-20Au-15Cu alloys containing different contents (2% and 4%) of Sn, Ga, or In and a 35Ag-30Pd-20Au-15Cu alloy without additives were evaluated. These alloys were subjected to four different heat treatments before a mechanical test. The distribution of the elements and their contents were analyzed. The mechanical properties of 35Ag-30Pd-20Au-15Cu alloy ch...

OBJECTIVE To compare both the dorsal onlay technique of Barbagli and the dorsal inlay technique of Asopa for the management of long anterior urethral stricture. METHODS From January 2010 to May 2012, a total of 47 patients with long anterior urethral strictures were randomized into two groups. The first group included 25 patients who were managed by dorsal onlay buccal mucosal graft urethropl...

As a result of the increasing needs among public to enhance esthetics, many approaches have been made and results included different as non-metallic tooth-colored restorations, including direct indirect resin composites. In addition, another approach is ceramic onlays or inlays. this study, we aim formulate strong evidence regarding differences between composite clinical outcomes, related effec...

the major foible of dental ceramics is their brittle nature. therefore, the producers of these materials have focused on the “strength” issue. a method of increasing strength is ion exchange on porcelain surface which leads to formation of a compressive crust that opposing forces should overcome before developing a crack. in current study, ion exchange in two types of porcelain, ceramco ii whic...

Micro- and nanotexturization of surfaces can give to the parts different advanced functionalities, such as superhydrophobicity, self-cleaning, or antibacterial capabilities. These properties in combination with biocompatibility Liquid Silicone Rubber are an interesting approach for obtaining high-performance medical devices. The industrial production surface textures polymeric materials is thro...

We investigated the initial adhesion in vitro of oral streptococci to porcelain inlays. Four strains of streptococci, Streptococcus mitis NCTC12261, Streptococcus oralis ATCC9811, Streptococcus sanguis ATCC10556 and Streptococcus sobrinus OMZ176, were used in this study. The disc specimens were made of porcelain, composite resin cement and human enamel. These specimens, with or without a saliva...