Related Experiment Video
Updated: Apr 30, 2026
Fabrication of Mechanically Tunable and Bioactive Metal Scaffolds for Biomedical Applications
Published on: December 8, 2015
Bone regeneration performance of surface-treated porous titanium
Saber Amin Yavari1, Johan van der Stok2, Yoke Chin Chai3
1Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology (TU Delft), Mekelweg 2, 2628 CD Delft, The Netherlands; FT Innovations BV, Braamsluiper 1, 5831 PW Boxmeer, The Netherlands.
Biofunctionalizing porous titanium implants with acid-alkali (AcAl) or anodizing-heat treatment (AnH) significantly impacts bone regeneration. AnH enhanced cell activity and stability, while AcAl promoted bone ingrowth, revealing complex relationships between surface properties and implant performance.
Area of Science:
- Biomaterials Science
- Orthopedic Engineering
- Regenerative Medicine
Background:
- Additive manufactured porous titanium implants are bioinert, limiting bone regeneration.
- Biofunctionalizing surface treatments can enhance implant osseointegration and performance.
- Understanding treatment effects on biological and mechanical properties is crucial for clinical translation.
Purpose of the Study:
- To compare the effects of three biofunctionalizing surface treatments (acid-alkali, alkali-acid-heat, anodizing-heat) on porous titanium.
- To evaluate treatment impacts on apatite formation, cellular response, bone regeneration, and biomechanical stability.
- To elucidate the relationship between surface modification, biological integration, and implant mechanical integrity.
Main Methods:
- Longitudinal study involving three surface treatments: acid-alkali (AcAl), alkali-acid-heat (AlAcH), and anodizing-heat (AnH).
- Evaluated apatite forming ability, cell attachment, proliferation, and osteogenic gene expression via in vitro assays.
- Assessed bone regeneration volume, biomechanical stability, and bone-implant contact in vivo using animal models.
Main Results:
- AcAl improved apatite formation but not cellular response or osteogenic gene expression.
- AnH did not improve apatite formation but significantly enhanced cell attachment, proliferation, and osteogenic marker expression.
- AcAl yielded greater bone regeneration volume, while AnH demonstrated superior biomechanical stability, indicating complex structure-property relationships.
Conclusions:
- Surface treatments significantly influence apatite formation, cellular behavior, and bone ingrowth in porous titanium.
- Anodizing-heat treatment offers a promising strategy for enhancing cellular integration and biomechanical stability.
- The interplay between surface properties, biological response, and biomechanical outcomes is intricate and requires further investigation.
