Cranial implants are used to secure intracranial structures, reconstruct the skull contour, normalise cerebral haemodynamic and repair cranial defects. Larger bone defects require intervention for from an implant made autologous or other material. To such using implants, materials necessitate biocompatibility with natural bone. Patient-specific designed specific following standard procedures de...

Present research aims to develop a finite element computational model examine delamination-fretting wear behaviour that can suitably mimic actual loading conditions at HAp-Ti-6Al–4V interface of uncemented hip implant femoral stem component. A simple contact configuration based on fretting fatigue experimental arrangement subjected different mechanical and tribological properties consist pad (b...

Despite its non-matching mechanical properties titanium remains the preferred metal implant material in orthopaedics. As a consequence in some cases stress shielding effect occurs, leading to implant loosening, osteopenia, and finally revision surgery. Porous metal scaffolds to allow easier specialised cells ingrowth with mechanical properties closer to the ones of bone can overcome this proble...

INTRODUCTION The aim of this study is to assess the osseointegration of different dental implants surfaces in diabetic rats. MATERIALS AND METHODS In this study, were used 56 male Wistar rats, average weight of 300-350 g. Diabetes was induced by a single intraperitoneal injection of Streptozotocin. The glucose levels and weight of rats were periodically evaluated. After the diabetes mellitus ...

The only alloy currently utilized for additive manufacture of bone implants, Ti–6Al–4V, has a high elastic modulus and bioinert surface, potentially inducing stress shielding hindering osseointegration. Low-modulus materials with bioactive surfaces could significantly reduce implant failure rates by improving the interaction between implants surrounding bone. In this study, laser powder bed fus...

To secure the total hip replacement (THR) components, introduced in 1960s, polymethyl methacrylate (PMMA) bone cement was used as a fixation. The polymerizes and becomes firm to hold implant place. However, failure of may lead fractures dislocations which is detrimental patient’s well-being whether short-term or long-term. Hence, aim this study find suitable mixtures for compromising Young Modu...

Nowadays modification of metallic biomaterials which are used as implants for bone and hard tissues replacement is considered as an important subject. In the current study, corrosion fatigue properties of Ti-6Al-4V alloy investigated via Rotating-Bending standard test method and then, the results compared with the fatigue properties of the specimens tested in the same conditions. Scanning elect...

Titanium-aluminum-vanadium (Ti-6Al-4V) implants were placed in the tibiae of 32 rats (male Sprague-Dawley, 350 g) to examine healing and bone response. Half of the implants were treated with fibroblast growth factor 1 (FGF-1) delivered in an activated fibrinogen matrix. Animals were injected with a radiopharmaceutical imaging agent, technetium-99m-methylene diphosphonate (Tc-99m-MDP), which con...

The mechanical performance of cemented or screw-retained implant-supported crowns with an internal or external configuration is yet to be understood. This in vitro study evaluated the effect of screw-retained and cement-retained prostheses on internal and external implant-abutment connections. Thereby, the reliability and failure modes of crowns were investigated. Eighty-four implants (Emfils; ...

Over the past few decades there has been great interest in the use of orthopedic and dental implants that integrate into tissue by promoting bone ingrowth or bone adhesion, thereby eliminating the need for cement fixation. However, strategies to create bioactive implant surfaces to direct cellular activity and mineralization leading to osteointegration are lacking. We report here on a method to...