Wear characteristics of sliding pairs of zirconia (Y-TZP) for hip endoprostheses

Willmann, G.; Früh, H.-J.; Pfaff, H.-G.

doi:10.1016/0142-9612(96)00042-7

Cited by 109 publications

(47 citation statements)

References 11 publications

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“…Despite the mechanical strength of NANOZR and 3Y-TZP maybe enough for mastication force, the wear and low temperature aging of zirconia ceramic in vivo may induce the grain-pull out, increase surface flaw, and may decrease the properties of zirconia 21,49) . Some studies demonstrated that wear has a strong effect on aging of zirconia materials 50,51) .…”

Section: Discussionmentioning

confidence: 99%

The surface characterization and bioactivity of NANOZR in vitro

et al. 2014

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The purpose of this study was to evaluate the surface characterization and bioactivity of ceria-stabilized zirconia/alumina nanocomposite (NANOZR) in comparison to yttria-stabilized zirconia (3Y-TZP) and pure titanium (CpTi). Three-dimension surface morphology, surface wettability, bovine serum albumin adsorption rate, cell morphology, cell proliferation and ALP activity of three tested materials were measured. There were no significant differences in surface roughness, contact angle among the three materials. The ALP expression of NANOZR was higher than CpTi and 3Y-TZP at 14 and 21 days although bovine serum albumin adsorption rate, cell morphology; and cell proliferation was not different among the three materials. These results suggest that the three test materials basically had similar surface characterization and bioactivity. Within the limitations of this study, our results show that the three test materials were biologically similar bio-inert materials.

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Section: Discussionmentioning

confidence: 99%

The surface characterization and bioactivity of NANOZR in vitro

et al. 2014

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“…This is a cause for concern considering Co and Cr ions are known carcinogens [6]. Ceramics, in general, are less prone to corrosion, have lower wear rates and produce less wear particles [5,7,8]. However, a disadvantage of alumina and zirconia in comparison to metals is that they are relatively brittle in bulk form, which could lead to catastrophic failure in vivo.…”

Section: Introductionmentioning

confidence: 96%

Fabrication and evaluation of SixNy coatings for total joint replacements

Olofsson

Pettersson

Teuscher

et al. 2012

J Mater Sci: Mater Med

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Wear particles from the bearing surfaces of joint implants are one of the main limiting factors for total implant longevity. Si(3)N(4) is a potential wear resistant alternative for total joint replacements. In this study, Si(x)N(y)-coatings were deposited on cobalt chromium-discs and Si-wafers by a physical vapour deposition process. The tribological properties, as well as surface appearance, chemical composition, phase composition, structure and hardness of these coatings were analysed. The coatings were found to be amorphous or nanocrystalline, with a hardness and coefficient of friction against Si(3)N(4) similar to that found for bulk Si(3)N(4). The low wear rate of the coatings indicates that they have a potential as bearing surfaces of joint replacements. The adhesion to the substrates remains to be improved.

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“…Couplings can be polyethylene-metal, metal-metal, ceramics-ceramics, polyethylene-ceramics [9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

The Difference of Material Wettability as Critical Factor in the Choice of a Tribological Prosthetic Coupling Without Debris Release

2005

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Today, in spite of the long experience acquired in the field of total hip replacements, prosthetic systems are still far from reproducing the natural system. One of the main causes of long term failure is the amount of wear debris produced by the tribological coupling between acetabolar cup and femoral head. The authors carried out experimental research in order to investigate the tribological coupling of various prosthetic biomaterials. Experimental tests were carried out with the pin-on-disc tribometer in dry, water and human serum as lubricant. This study sets new bases for the design of modern hip prostheses: 1. the wettability difference among the materials in tribological coupling, which is the necessary condition to promote efficient lubrication; 2. the use of Peek reinforced with long and unidirectional carbon fibres in the prosthetic field.

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Wear characteristics of sliding pairs of zirconia (Y-TZP) for hip endoprostheses

Cited by 109 publications

References 11 publications

The surface characterization and bioactivity of NANOZR in vitro

The surface characterization and bioactivity of NANOZR in vitro

Fabrication and evaluation of SixNy coatings for total joint replacements

The Difference of Material Wettability as Critical Factor in the Choice of a Tribological Prosthetic Coupling Without Debris Release

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