Korean J Dent Mater.  2019 Mar;46(1):43-52. 10.14815/kjdm.2019.46.1.43.

Evaluation of bioactivity and osseointegration for ti-6al-4v alloy implant modified by anodic oxidation and cyclic precalcification treatments

• Jang YS
• Kang JY
• Lee KG
• Lim CH
• Lee MH
• Bae TS

• KMID: 2448023
• DOI: http://doi.org/10.14815/kjdm.2019.46.1.43

Abstract

The aim of this study was to examine the bioactivity and osseointegration of Ti-6Al-4V alloy implant which was modified by an anodic oxidation and a cyclic precalcification treatments. After blasting treatment using HAp (Hydroxyapatitie; HAp) powder which is resorbable blasting media (RBM) on the surface of Ti-6Al-4V alloy implants, the anodic oxidation treatment and the cyclic precalcification treatment were conducted to form nanotube TiO2 layer and HAp precipitation respectively. The surface morphology of the surface-treated Ti-6Al-4V alloy implant was investigated after immersion in the simulated body fluid(SBF) for 3 days to investigate the bioactivity. To investigate the effect of surface treatment on bonding between the implant and bone, RBM treated implant and RBM-anodization-cyclic precalcification(RACP) treated implant were placed on the distal side of both tibia diaphysis of rats, and then the removal torque of the implant was measured after 4 weeks. On the surface of RACP treated group, bone-like apatite precipitation was observed after immersion in SBF for 3 days. The removal torque was significantly higher in the RACP treated group than in the RBM treated group. The interfacial fracture between the implant and the new bone was observed in the RBM treated group, but both the cohesive fracture at the new bone and the interfacial fractures between the implant and the new bone were observed in the RACP treated group.

Keyword

Ti-6Al-4V alloy implant; nanotubular TiOâ‚‚; cyclic precalcification treatment; bioactivity; removal torque

MeSH Terms

Alloys*
Animals
Diaphyses
Immersion
Nanotubes
Osseointegration*
Rats
Tibia
Torque
Alloys