Cobalt chromium (CoCr) alloys are utilized to make dental prosthesis. Casting CoCr is a common operation in dentistry laboratories due its low cost. surplus (metal remaining the sprue and crucible former) frequently reused by reduce recycle metal waste. However, quality safety of these recast require further information. Microbial attachment surface prostheses may affect safety. Biofilm formati...

Mixed salines, 3-methacryloxypropylsilytriisocyanate and 3-mercaptopropyltrimethoxysilane, were used as primers for adhesion of poly(methyl methacrylate) to porcelain teeth, precious alloys and nonprecious alloys. After thermocycle testing, the mean bond strength of the resin to porcelain, silver alloys and stainless steel were excellent. The fracture patterns of porcelain teeth after thermocyc...

Abstract In the present paper, a three-dimensional finite element model of Charnley implant has been developed to analyze stress–strain distribution and deformation over stem prosthesis. Patient-specific dynamic forces have considered for analytical evaluation using commercial code. The impact each activity analyzed separately six different biocompatible alloy materials made titanium cobalt-chr...

The oxidation kinetics of two metallic glasses have been studied by ellipsometry and Auger Electron spectroscopy. We have found that the presence of chromium in Fe based alloys has a marked influence on the thickness of corrosion film formed and on the kinetics of film formation. INTRODUCTION measured after various exposures to the high Several authors have reported that amorphous iron based al...

BACKGROUND In Brazil, despite the recommendations of the Brazilian Society of Hemodynamics and Interventional Cardiology, the National Health System has not yet approved the use of drug-eluting stents. In percutaneous coronary interventions performed in the public and part of the private health care system, bare metal stents are used as the only option. Therefore, new information on bare metal ...

Coronary stents represent a key development for the treatment of obstructive coronary artery disease since the introduction of percutaneous coronary intervention. While drug-eluting stents gained wide acceptance in contemporary percutaneous coronary intervention practice, further developments in bare-metal stents remain crucial for patients who are not candidates for drug-eluting stents, or to ...

The AA 2198-T851 is a third-generation Al-Li alloy developed for use in the aircraft industry. alloys are susceptible to localized corrosion due their complex microstructure resulting from used thermomechanical treatment. In order prevent corrosion, these usually protected by anodizing avoid corrosive environment. Subsequently, anodizing, sealing treatment performed parts. Some treatments hexav...