Osseointegration of sandblasted or anodised hydrothermally-treated titanium implants: Mechanical, histomorphometric and bone hardness measurements

G. Giavaresi, M. Fini, R. Chiesa, L. Rimondini, G. Rondelli, V. Borsari, L. Martini, N. Nicoli Aldini, G. A. Guzzardella, Roberto Giardino

Research output: Contribution to journalArticlepeer-review

Abstract

The improvement of the implant-bone interface is still an open problem in the long-term mechanical stability of cementless fixed implants. Mechanical, histomorphometric and bone hardness measurements were performed in sheep femoral cortical bone implants at 8 and 12 weeks from surgery to compare in vivo the osseointegration of titanium screws (Ø 3.5 mm × 7 mm length) with two different surface treatments: sandblasting with 70-100 μm HA followed by acid etching with HNO3 (Group A) and Ca-P anodization followed by a hydrothermal treatment (Group B). No significant differences were found for maximum push-out force and interfacial strength between groups at both experimental times. No significant difference was observed for Bone Ingrowth between groups at both experimental times, while the Affinity Index of Group B was significantly higher (7.5%, p

Original languageEnglish
Pages (from-to)806-813
Number of pages8
JournalInternational Journal of Artificial Organs
Volume25
Issue number8
Publication statusPublished - Aug 1 2002

Keywords

  • Bone histomorphometry
  • Bone microhardness
  • Electrochemical surface treatment
  • Interfacial strength
  • Sandblasted and acid-etched surface
  • Titanium implants

ASJC Scopus subject areas

  • Biophysics

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