RATIONALE USING COBALT-CHROMIUM ALLOY VARIOUS FORMULATIONS IN PROSTHETIC DENTISTRY

Effect of particulate cobalt, chromium and cobalt-chromium alloy on human osteoblast-like cells in vitro.

Reaction of cobalt-chromium casting alloy with investment.

REACTION DE ALLIGATO FUSIONAL DE COBALT E CHROMO CON INVESTIMENTO.-Alterationes chimic occurrente intra le investimento ligate a phosphate durante le prisa e le cocer esseva determinate per technicas a diffraction de radios X. Es postulate le occurrentia de certe reactiones durante le processo. Tests del resistentia al compression effectuate a varie temperatures corroborava ille postulates. Ess...

The effects of particulate cobalt, chromium and cobalt-chromium alloy on human osteoblast-like cells in vitro.

Particulate wear debris can induce the release of bone-resorbing cytokines from cultured macrophages and fibroblasts in vitro, and these mediators are believed to be the cause of the periprosthetic bone resorption which leads to aseptic loosening in vivo. Much less is known about the effects of particulate debris on the growth and metabolism of osteoblastic cells. We exposed two human osteoblas...

In vitro evaluation of the bond strength between various ceramics and cobalt-chromium alloy fabricated by selective laser sintering

PURPOSE This study aimed to present the clinical applicability of restorations fabricated by a new method, by comparing the bond strength of between ceramic powder with different coefficient of thermal expansion and alloys fabricated by Selective laser sintering (SLS). MATERIALS AND METHODS Fifty Co-Cr alloy specimens (25.0 × 3.0 × 0.5 mm) were prepared by SLS and fired with the ceramic (8.0 ...

Early Fixation of Cobalt-Chromium Based Alloy Surgical Implants to Bone Using a Tissue-engineering Approach

To establish the methods of demonstrating early fixation of metal implants to bone, one side of a Cobalt-Chromium (CoCr) based alloy implant surface was seeded with rabbit marrow mesenchymal cells and the other side was left unseeded. The mesenchymal cells were further cultured in the presence of ascorbic acid, β-glycerophosphate and dexamethasone, resulting in the appearance of osteoblasts and...