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Metals

Metals. Ceramics. Polymers. Semiconductor Materials. Skin/cartilage. Drug Delivery Devices. Ocular implants. Bone replacements. Orthopedic screws/fixation. Heart valves. Synthetic BIOMATERIALS. Dental Implants. Dental Implants. Biosensors. Implantable Microelectrodes.

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Metals

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  1. Metals Ceramics Polymers Semiconductor Materials Skin/cartilage Drug Delivery Devices Ocular implants Bone replacements Orthopedic screws/fixation Heart valves Synthetic BIOMATERIALS Dental Implants Dental Implants Biosensors Implantable Microelectrodes

  2. Biomaterial Science

  3. Bileaflet Heart Valves

  4. Dental Implants

  5. Intraocular Lenses • Implantation often performed on outpatient basis.

  6. Must Be Flexible. Designed With Open Porous Structure. Often Recognized By Body As Foreign. Vascular Grafts

  7. Hip-Replacements

  8. Normal versus Arthritic Hip Arthritic Hip: No space visible in joint, as cartilage is missing Normal Hip: note the space between the femur and acetabulum, due to cartilage

  9. Two attachment methods using a porous metal surface to create a bone ingrowth interface using a Polymethylmethacrylate (PMMA) cement to adhere the metal to the bone

  10. Overview of femoral replacement the acetabulum and the proximal femur have been replaced. The femoral side is completely metal. The acetabular side is composed of the polyethylene bearing surface

  11. Load transfer in Composite materials The two materials are bonded and equal force is applied to both

  12. Comparison: Moduli of Elasticity Modulus of elasticity of different implant materials and bone (in GPa)

  13. Implant bonding A bonded interface is characteristic of a cemented prosthesis (left) non-bonded interface is characteristic of a non-cemented press fit prosthesis (right)

  14. Degradation Problems Example of fractured artificial cartilage from a failed hip replacement

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