نتایج جستجو برای: titanium implant
تعداد نتایج: 80029 فیلتر نتایج به سال:
As orthopaedic and dental metallic implant materials, titanium and titanium alloys are widely used due to their relatively low modulus, good fracture toughness, excellent strenthto-weight ration, and superior biocompatibility and corrosion resistance (Long and Rack, 1998). They have become the first choice above all other candidate metallic implant materials such as Co-Cr-Mo alloys, stainless s...
titanium and its alloy are known as important load-bearing biomaterials. the major drawbacks of these metals are fibrous formation and low corrosion rate after implantation. the surface modification of biomedical implants through various methods such as plasma spray improves their osseointegration and clinical lifetime. different materials have been already used as coatings on biomedical implan...
Is galvanic corrosion between titanium alloy and stainless steel spinal implants a clinical concern?
BACKGROUND CONTEXT Surgeons are hesitant to mix components made of differing metal classes for fear of galvanic corrosion complications. However, in vitro studies have failed to show a significant potential for galvanic corrosion between titanium and stainless steel, the two primary metallic alloys used for spinal implants. Galvanic corrosion resulting from metal mixing has not been described i...
With regards to their biological and physiochemical properties, titanium-based biomaterials have been successfully used in orthopaedic, dental and maxillo-facial surgery mainly as endosseous implants. The early osseointegration of titanium dental implants is an important factor for their clinical success. The implant loading to bone is influenced by various factors, including surface chemistry,...
Titanium implants commonly used in orthopedics and dentistry integrate into host bone by a complex and coordinated process. Despite increasingly well illustrated molecular healing processes, mechanical modulation of implant bone ingrowth is poorly understood. The objective of the present study was to determine whether micromechanical forces applied axially to titanium implants modulate bone ing...
This study focuses on titanium implants in a conventional manner and the newly introduced and highly popular Zirconia implants. Some of the major areas covered here are clinical considerations and material science which includes implant materials as well as the impacts of its physical properties on outcomes of the treatment. Titanium is the gold standard for dental implants fabrication in spite...
STUDY DESIGN This was a biomechanical push-out testing study using a porcine model. OBJECTIVE The purpose was to evaluate the strength of implant-bone interface of a porous titanium scaffold by comparing it to polyetheretherketone (PEEK) and allograft. SUMMARY OF BACKGROUND DATA Osseointegration is important for achieving maximal stability of spinal fusion implants and it is desirable to ac...
PURPOSE To investigate the clinical usefulness, a customized abutment produced with the Pd-Ag-In alloy was compared with a customized abutment produced with the conventional titanium alloy for discoloration and mechanical accuracy. MATERIALS AND METHODS Discoloration and resistance to corrosion of the Pd-Ag-In alloy were evaluated using chemical solutions. Marginal adaptation of internal-type...
PURPOSE To evaluate in vivo collagen fiber behavior around two different dental implant necks placed in the mandibular bone of adult pigs. MATERIALS AND METHODS Scanning electron microscopic (SEM) and profilometric analyses were performed on both types of implant necks to evaluate the different surface morphology. Ten dental implants with machined titanium necks and 20 implants with zirconia ...
The purpose of this study was to investigate how different materials affect the magnetic resonance imaging (MRI) detectability of interbody test spacers (ITS). We evaluated the post-implantation MRI scans with T1 TSE sequences for three different ITS made of titanium, carbon fibre-reinforced polymers (CFRP) and titanium-coated CFRP, respectively. The main target variables were total artefact vo...
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