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 journalArticlepeer-review

54 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 languageEnglish
Pages (from-to)304-311
Number of pages8
JournalJournal of Arthroplasty
Volume17
Issue number3
DOIs
Publication statusPublished - 2002
Externally publishedYes

Keywords

  • Bone
  • Hydroxyapatite (HA)
  • Ongrowth
  • Push-out
  • Uncemented

Fingerprint

Dive into the research topics of 'The effect of substrate roughness and hydroxyapatite coating thickness on implant shear strength'. Together they form a unique fingerprint.

Cite this