Properties

Bulk Material Properties

Implantable-grade Titanium and Titanium alloy (Ti6Al4V).
Chemical and Mechanical properties comply with ISO and AST M Standards.

Porous Structure Properties

With Additive Manufacturing 3D metal networks can be CAD designed and built up together with devices’ solid parts.

Porous surface friction against bone can be adjusted according to specific needs. Example of friction coefficients obtained (Symbols identify four different porous structures tested).

Additive Manufactured metal porous structures can achieve high adhesion and cohesion strengths, in full agreement with standards.

Net to bulk adhesion strength is 3D metal network design dependent. Values showed are relative to a couple of porous structures designed and manufactured for exemplification purposes.

Biological Porous Structure characterization

In vitro tests have assessed cell viability and proliferation in Additive Manufactured titanium networks.

For properly designed and manufactured porous structures in vivo tests have shown:

• bone ingrowth into AM lattice structures
• healthy bone near the implants
• improved implant fixation strength

Implantation study performed in sheep pelvis with Ti-Alloy laser sintered samples

Sem picture of a laser sintered titanium porous structure tested:

Implantation study performed in sheep condyles with Ti-Alloy Ebm sintered samples

Image 1: Fluorochrome picture after 6 weeks implantation:white ring surgery cut; black titanium porous specimen; green new bone formed into specimen porous structure

Image 2: Histology showing bone ingrowth into ebm made porous specimens after 6 weeks implantation