Related Experiment Video
Updated: Jul 17, 2025
Fabrication of Mechanically Tunable and Bioactive Metal Scaffolds for Biomedical Applications
Published on: December 8, 2015
Osteogenic properties of bioactive titanium in inflammatory environment
Xiong Shibing1, Lu Xugang1, Zhang Siqi1
1Engineering Research Center in Biomaterials, Sichuan University, Chengdu 610064, China; National Engineering Research Center for Biomaterials, Chengdu 610064, China; Sichuan Guojia Biomaterials Co., Ltd, Chengdu 610064, China; College of Biomedical Engineering, Sichuan University, Chengdu 610064, China.
Anodic oxidation surface modification of titanium (AO-Ti) enhances bone marrow mesenchymal stem cell (MSC) osteogenic differentiation in inflammatory conditions, promoting better bone regeneration compared to other titanium treatments.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Orthopedics
Background:
- Surface modification of titanium implants is crucial for bone regeneration.
- The inflammatory micro-environment can significantly impact the bio-function of modified titanium surfaces.
- Understanding how modified titanium influences osteogenic differentiation under inflammatory conditions is vital for dental implant success.
Purpose of the Study:
- To investigate the effects of surface-modified titanium on osteogenic differentiation of bone marrow mesenchymal stem cells (MSCs) in inflammatory conditions.
- To evaluate the in vivo osteogenic properties of modified titanium dental implants under inflammatory challenges.
Main Methods:
- Medical pure titanium (PT-Ti) was modified using Anodic Oxidation (AO-Ti), Sand Blasting/acid etching (SLA-Ti), and Plasma-sprayed HA coating (HA coating-Ti).
- MSCs were cultured on these modified surfaces under normal and inflammatory conditions to assess proliferation, morphology, and osteogenic marker expression (BMP-2, ALP, OCN, COL-I, Runx2).
- In vivo studies evaluated the osteogenic properties of AO-Ti implants, including gingival depth and bone binding rates.
Main Results:
- AO-Ti surfaces maintained MSC proliferation and morphology in inflammatory conditions, unlike SLA-Ti and HA coating-Ti.
- AO-Ti showed the highest expression of osteogenic proteins (BMP-2) and genes (ALP, OCN, COL-I, Runx2) in inflammatory environments.
- In vivo, AO-Ti implants exhibited reduced gingival depth, visible new bone formation at two weeks, and the highest bone binding rate (81.3%) after one year.
Conclusions:
- Anodic oxidation is an effective surface modification technique for titanium, significantly enhancing osteogenic differentiation and bone regeneration, particularly in inflammatory conditions.
- AO-Ti demonstrates superior performance over other tested titanium modifications in promoting osteogenesis and osseointegration, making it a promising material for dental implants.
