Titanium for Hip and Knee Prostheses

Windler, Markus; Klabunde, R.

doi:10.1007/978-3-642-56486-4_21

Cited by 27 publications

(20 citation statements)

References 91 publications

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“…In comparison, forging can achieve the best mechanical properties for metallic prostheses. Specifically, both Ti-6Al-4V and Table 2.3 Mechanical properties of selected titanium, titanium alloys and bone (Niinomi, 1998) Ti-6Al-7Nb can be forged into hip implant components at temperatures between 900 and 950 ëC (Windler and Klabunde, 2001). This is because hot forging or other thermo-mechanical treatments can inherently close the pre-existing voids and improve mechanical and fatigue properties of the same material.…”

Section: Mechanical and Thermal Treatmentmentioning

confidence: 98%

“…The fatigue strength of titanium alloys is significantly higher than pure titanium and is affected by its microstructure and surface treatment. For example, forged and polished Ti-6Al-7Nb has a fatigue strength of about 600 MPa which is excellent compared with its static strength (Windler and Klabunde, 2001). However, it is known that titanium alloys are sensitive to fatigue induced by notches.…”

Section: Fatigue Strengthmentioning

confidence: 98%

“…Basically, the titanium or cobalt±chrome alloy surfaces are bombarded with high-energy ions which penetrate into the metal substrate and change the composition and properties of the surface. Nitrogen, oxygen, and other elements are usually used to increase the hardness of the surface regions and such ion-implanted surfaces have been advocated for articulating joint surfaces especially with UHMWPE (Windler and Klabunde, 2001).…”

Section: Surface Treatments To Increase Wear Resistance and Biocompatmentioning

confidence: 99%

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Titanium and cobalt–chromium alloys for hips and knees

Yao

Webster

2011

Biomaterials for Artificial Organs

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Section: Mechanical and Thermal Treatmentmentioning

confidence: 98%

Section: Fatigue Strengthmentioning

confidence: 98%

Section: Surface Treatments To Increase Wear Resistance and Biocompatmentioning

confidence: 99%

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Titanium and cobalt–chromium alloys for hips and knees

Yao

Webster

2011

Biomaterials for Artificial Organs

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“…This lack of proper integration of titanium with tissue can lead to implant failure by aseptic loosening. 6 Since the biological response to implanted biomaterials is influenced by the surface properties of the materials, modifying the chemical properties of the implant's surface can often improve the control of the interactions between an implant and its surrounding tissue. 7,8 A promising simple approach to modify the surface of titanium implants is grafting a bioactive polymer from their surfaces.…”

Section: Introductionmentioning

confidence: 99%

Grafting titanium nitride surfaces with sodium styrene sulfonate thin films

2014

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The importance of titanium nitride lies in its high hardness and its remarkable resistance to wear and corrosion, which has led to its use as a coating for the heads of hip prostheses, dental implants and dental surgery tools. However, the usefulness of titanium nitride coatings for biomedical applications could be significantly enhanced by modifying their surface with a bioactive polymer film. The main focus of the present work was to graft a bioactive poly(sodium styrene sulfonate) (pNaSS) thin film from titanium nitride surfaces via a two-step procedure: first modifying the surface with 3-methacryloxypropyltrimethoxysilane (MPS) and then grafting the pNaSS film from the MPS modified titanium through free radical polymerization. X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS) were used after each step to characterize success and completeness of each reaction. The surface region of the titanium nitride prior to MPS functionalization and NaSS grafting contained a mixture of titanium nitride, oxynitride, oxide species as well as adventitious surface contaminants. After MPS functionalization, Si was detected by XPS, and characteristic MPS fragments were detected by ToF-SIMS. After NaSS grafting, Na and S were detected by XPS and characteristic NaSS fragments were detected by ToF-SIMS. The XPS determined thicknesses of the MPS and NaSS overlayers were $1.5 and $1.7 nm, respectively. The pNaSS film density was estimated by the toluidine blue colorimetric assay to be 260 6 70 ng/cm 2

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“…29) In other Ti alloys, although Ti-6Al-4V alloy has been widely used as the titanium alloy for surgical implants, mechanically interfacial problems were pointed out due to the difference in mechanical properties, especially in the elastic modulus, between the implanted materials and the surrounding tissues. 30) Consequently, beta type titanium alloys with low elastic modulus as well as high strength have been recently designed and developed for biomedical use. [31][32][33] On the other hand, mechanically functional properties like super-elasticity of metallic materials are utilized in dental devices.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Property of Super-Elastic Ti–Ni Alloy Dental Castings

et al. 2005

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Ti-Ni alloy is a promising material in the medical and dental fields due to its special mechanical properties, especially super-elasticity. Since dental prostheses are generally used under repetitive stress condition, fatigue properties of Ti-Ni alloy castings were investigated in this study. Ti-50.85Ni (mol%) alloy ingots were used for casting, which exhibited super-elasticity at 310 K in tensile test. Specimens were prepared with a centrifugal casting machine and a magnesia-based mold material. Fatigue test was performed at 310 K under repetitive loading condition with sine-waved load. The minimum stress was set at 0 MPa to evaluate the fatigue properties and change in residual strain. The maximum stress was set in the appropriate range considering the tensile property. Ultimate tensile strength and elongation to fracture of Ti-Ni alloy castings were 732 MPa and 10.6%, respectively, which were between those of CP-Ti and Ti-6Al-4V alloy castings. The fatigue limit of Ti-Ni alloy casting (206 MPa) was equivalent to or higher than that of CP-Ti or Ti-6Al-4V alloy. There was linear correlation between the fatigue ratios to ultimate tensile strength and the elongation to fracture for Ti-Ni alloy, CP-Ti and Ti-6Al-4V alloy castings, while Ti-Ni alloy showed high fatigue ratio to proof stress, which appears to relate to the twin deformation by stress-induced martensitic transformation. The stress-strain properties of TiNi alloy castings were evaluated to be stable, and it is possible to utilize the super-elasticity in cast dental prostheses.

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Titanium for Hip and Knee Prostheses

Cited by 27 publications

References 91 publications

Titanium and cobalt–chromium alloys for hips and knees

Titanium and cobalt–chromium alloys for hips and knees

Grafting titanium nitride surfaces with sodium styrene sulfonate thin films

Fatigue Property of Super-Elastic Ti–Ni Alloy Dental Castings

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Titanium for Hip and Knee Prostheses

Cited by 27 publications

References 91 publications

Titanium and cobalt–chromium alloys for hips and knees

Titanium and cobalt–chromium alloys for hips and knees

Grafting titanium nitride surfaces with sodium styrene sulfonate thin films

Fatigue Property of Super-Elastic Ti&ndash;Ni Alloy Dental Castings

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Fatigue Property of Super-Elastic Ti–Ni Alloy Dental Castings