Rapid evaluation of bioactive Ti-based surfaces using an in vitro titration method.

Abstract:

:The prediction of implant behavior in vivo by the use of easy-to-perform in vitro methods is of great interest in biomaterials research. Simulated body fluids (SBFs) have been proposed and widely used to evaluate the bone-bonding ability of implant materials. In view of its limitations, we report here a rapid in vitro method based on calcium titration for the evaluation of in vivo bioactivity. Using four different titanium surfaces, this method identifies that alkaline treatment is the key process to confer bioactivity to titanium whereas no significant effect from heat treatment is observed. The presence of bioactive titanium surfaces in the solution during calcium titration induces an earlier nucleation of crystalline calcium phosphates and changes the crystallization pathway. The conclusions from this method are also supported by the standard SBF test (ISO 23317), in vitro cell culture tests using osteoblasts and in vivo animal experiments employing a pelvic sheep model.

journal_name

Nat Commun

journal_title

Nature communications

authors

Zhao W,Michalik D,Ferguson S,Hofstetter W,Lemaître J,von Rechenberg B,Bowen P

doi

10.1038/s41467-019-09673-1

subject

Has Abstract

pub_date

2019-05-02 00:00:00

pages

2062

issue

1

issn

2041-1723

pii

10.1038/s41467-019-09673-1

journal_volume

10

pub_type

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