The effect of substrate roughness and hydroxyapatite coating thickness on implant shear strength

M. Svehla; P. Morberg; W. Bruce; B. Zicat; W. R. Walsh

doi:10.1054/arth.2002.30410

The effect of substrate roughness and hydroxyapatite coating thickness on implant shear strength

M. Svehla, P. Morberg, W. Bruce, B. Zicat, W. R. Walsh^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

68 Citations (Scopus)

Abstract

This study examined the role of substrate preparation and hydroxyapatite (HA) coating thickness on bone ongrowth and shear strength in a bilateral bicortical sheep model. Plasma-sprayed and grit-blasted titanium implants with different thickness HA coatings were examined at 4, 8, 12, and 26 weeks after implantation. Shear strength increased with time for all implants. Plasma-sprayed implants were superior to grit-blasted implants at all time points. The 100-μm-thick HA layer used in the present study provided greater fixation and ongrowth and less resorption compared with the 50-μm-thick layer. We did not observe any advantage in using a thicker HA coating for the titanium substrates examined.

Original language	English
Pages (from-to)	304-311
Number of pages	8
Journal	Journal of Arthroplasty
Volume	17
Issue number	3
DOIs	https://doi.org/10.1054/arth.2002.30410
Publication status	Published - 2002
Externally published	Yes

Keywords

Bone
Hydroxyapatite (HA)
Ongrowth
Push-out
Uncemented

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10.1054/arth.2002.30410

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abstract = "This study examined the role of substrate preparation and hydroxyapatite (HA) coating thickness on bone ongrowth and shear strength in a bilateral bicortical sheep model. Plasma-sprayed and grit-blasted titanium implants with different thickness HA coatings were examined at 4, 8, 12, and 26 weeks after implantation. Shear strength increased with time for all implants. Plasma-sprayed implants were superior to grit-blasted implants at all time points. The 100-μm-thick HA layer used in the present study provided greater fixation and ongrowth and less resorption compared with the 50-μm-thick layer. We did not observe any advantage in using a thicker HA coating for the titanium substrates examined.",

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AU - Zicat, B.

AU - Walsh, W. R.

PY - 2002

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AB - This study examined the role of substrate preparation and hydroxyapatite (HA) coating thickness on bone ongrowth and shear strength in a bilateral bicortical sheep model. Plasma-sprayed and grit-blasted titanium implants with different thickness HA coatings were examined at 4, 8, 12, and 26 weeks after implantation. Shear strength increased with time for all implants. Plasma-sprayed implants were superior to grit-blasted implants at all time points. The 100-μm-thick HA layer used in the present study provided greater fixation and ongrowth and less resorption compared with the 50-μm-thick layer. We did not observe any advantage in using a thicker HA coating for the titanium substrates examined.

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The effect of substrate roughness and hydroxyapatite coating thickness on implant shear strength

Abstract

Keywords

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