نتایج جستجو برای: کیج peek
تعداد نتایج: 1874 فیلتر نتایج به سال:
Fused deposition modeling (FDM) is a rapidly growing 3D printing technology. However, printing materials are restricted to acrylonitrile butadiene styrene (ABS) or poly (lactic acid) (PLA) in most Fused deposition modeling (FDM) equipment. Here, we report on a new high-performance printing material, polyether-ether-ketone (PEEK), which could surmount these shortcomings. This paper is devoted to...
BACKGROUND Most contemporary total disc replacements (TDRs) use conventional orthopaedic bearing couples such as ultrahigh-molecular-weight polyethylene (polyethylene) and cobalt-chromium (CoCr). Cervical total disc replacements incorporating polyetheretherketone (PEEK) bearings (specifically PEEK-on-PEEK bearings) have been previously investigated, but little is known about PEEK-on-ceramic bea...
Addition of bioactive materials such as calcium phosphates or Bioglass, and incorporation of porosity into polyetheretherketone (PEEK) has been identified as an effective approach to improve bone-implant interfaces and osseointegration of PEEK-based devices. In this paper, a novel production technique based on the extrusion freeforming method is proposed that yields a bioactive PEEK/hydroxyapat...
Polyether ether ketone (PEEK) has been frequently used in spinal surgery with good clinical results. The material has a low elastic modulus and is radiolucent. However, in oral implantology PEEK has displayed inferior ability to osseointegrate compared to titanium materials. One idea to reinforce PEEK would be to coat it with hydroxyapatite (HA), a ceramic material of good biocompatibility. In ...
Carbon fiber-reinforced polyetheretherketone (CFR/PEEK) is theoretically suitable as a material for use in hip prostheses, offering excellent biocompatibility, mechanical properties, and the absence of metal ions. To evaluate in vivo fixation methods of CFR/PEEK hip prostheses in bone, we examined radiographic and histological results for cementless or cemented CFR/PEEK hip prostheses in an ovi...
Introduction. Increasing interest developed in the use of carbon-fiber-reinforced-poly-ether-ether-ketones (CFR-PEEK) as an alternative bearing material in knee arthroplasty. The effects of CFR-PEEK wear in in vitro and animal studies are controversially discussed, as there are no data available concerning human tissue. The aim of this study was to analyze human tissue containing CFR-PEEK as we...
Poly ether ether ketone (PEEK) offers a set of characteristics superior for human implants; however, its application is limited by the bio-inert surface property. In this work, PEEK surface was modified using single step plasma immersion ion implantation (PIII) treatment with a gas mixture of water vapor as a plasma resource and argon as an ionization assistant. Field emission scanning electron...
سابقه و هدف: مطالعات متعددی در مورد تأثیر درمانی کیج بین مهره ای (cage Interbody) در اسپوندیلوز سرویکال انجام شده است، ولی در مورد تأثیر ماده ی پر کننده ی کیج در ایجاد فیوژن و بهبود علایم بالینی بررسی چندانی انجام نشده است. از این رو در این مطالعه اثرات درمانی کیج سرویکال Solis پر شده با Novabone دربیماران مبتلا به فتق دیسک سرویکال بررسی شده است و نتایج آن با سایر مطالعاتی که از اتوگرافت جهت پر...
با توسعه ی فنّاوری های پیشرفته در زمینه ی ایمپلنت های ستون فقرات، طراحی و ساخت کیج های گردنی برای اوّلین بار در ایران مورد توجه قرار گرفته است. این پروژه ی تحقیقاتی صنعتی برمبنای مطالعات دقیق بیومکانیکی و براساس مدل های عملکردی اجزای محدود و آزمایش های مکانیکی مربوط به آن انجام می شود. درین تحقیق، بهینه سازی طراحی و مطالعه ی بیومکانیکی تنها کیج گردنی بومی سازی شده در ایران (ساخت شرکت...
Polyetheretherketone (PEEK) has good chemical and biomechanical properties that are excellent for biomedical applications. However, PEEK exhibits hydrophobic and other surface characteristics which cause limited cell adhesion. We have investigated the potential of Ar plasma treatment for the formation of a nanostructured PEEK surface in order to enhance cell adhesion. The specific aim of this s...
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