Co–Cr–Mo-based composite reinforced with bioactive glass

Microstructure, hardness, corrosion resistance and porcelain shear bond strength comparison between cast and hot pressed CoCrMo alloy for metal–ceramic dental restorations

“…8(b) shows the polarized surface of hot pressed specimens where the dissolution of the regions adjacent to the grain boundaries is visible. This finding is in accordance with Oksiuta et al (2009) study where they observed, in the pure CoCrMo hot pressed specimens, the dissolution of the phase present at the grain boundaries as well as numerous deep pits. Krasicka-Cydzik et al (2005), in their study on the corrosion behavior of hot pressed CoCrMo samples for surgical applications, also reported higher corrosion potentials in hot pressed specimens than in cast specimens.…”

“…PM is a technology that is gaining rising attention in medical field, in general, and in prosthetic dentistry in particular (Dewidar et al, 2006). PM based CAD/CAM systems are bringing to the prosthetic profession new opportunities in terms of manufacturing time, with the ability of producing more in less time, and processing materials with special properties, such as gradient pore materials (Dourandish et al, 2008) or composite materials (Henriques et al, 2011a,b;Oksiuta et al, 2009). PM 100 (Phenix Systems) and 3T RPD Ltd are two examples of companies that provide equipments (former) or services (latter) that allow the production of metal prostheses using laser-sintering, directly from a 3D CAD file.…”

Experimental evaluation of the bond strength between a CoCrMo dental alloy and porcelain through a composite metal–ceramic graded transition interlayer

“…Nevertheless, there is a study (Oksiuta et al, 2009) reporting significant increase in the hardness, yield strength and corrosion resistance of CoCrMo based composites reinforced with bioactive glass when compared to the pure CoCrMo alloy. This can give a hint about the properties that are expected for the CoCrMo-porcelain composites that will be used in this study as interlayers.…”

Mechanical properties of hot pressed CoCrMo alloy compacts for biomedical applications

“…Additionally, more attention should be paid to this route as it is highly related to the Powder Metallurgy (PM) based Computer Aided Design/Computer Aided Manufacturing (CAD/CAM) systems that allow the production of customized parts [11,12]. These systems offer further advantages such as short production times and the ability of processing materials with special properties like gradient porous materials [13] or composite materials [14][15][16][17][18][19][20][21].…”