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Alkali-Treated Titanium Coated with a Polyurethane, Magnesium and Hydroxyapatite Composite for Bone Tissue
Mahmoud Agour1, Abdalla Abdal-Hay2,3, Mohamed K Hassan1,4
1Department of Production Engineering and Design, Faculty of Engineering, Minia University, Minia 61112, Egypt.
Nanomaterials (Basel, Switzerland)
|April 30, 2021
Summary
This study developed a bioactive composite coating for titanium implants using polyurethane with hydroxyapatite nanoparticles and magnesium particles. This enhanced implant bioactivity and promoted bone formation.
Area of Science:
- Biomaterials Science
- Surface Engineering
- Biotechnology
Background:
- Titanium (Ti) implants are widely used in orthopedics and dentistry.
- Enhancing the bioactivity of Ti implant surfaces is crucial for improving osseointegration and bone formation.
- Current surface modification techniques often face challenges in achieving optimal bioactivity and biocompatibility.
Purpose of the Study:
- To develop a functional bioactive composite layer on alkali-treated titanium surfaces.
- To enhance the bioactivity and osteogenic potential of titanium implants.
- To investigate the effect of incorporating hydroxyapatite nanoparticles (HAp NPs) and magnesium (Mg) particles into a polyurethane (PU) coating.
Main Methods:
- A cost-effective dip-coating method was used to deposit PU coatings containing HAp NPs and Mg particles onto alkali-treated Ti substrates.
- Coatings were characterized for morphology, chemical composition, adhesion strength, interfacial bonding, and thermal properties.
- In vitro cell studies using MC3T3-E1 osteoblast-like cells assessed cell adhesion, proliferation, and osteogenic activity (ALP assay).
Main Results:
- The composite coatings demonstrated improved interfacial bonding between the coating and the Ti surface.
- Incorporation of HAp NPs and Mg particles enhanced surface charge properties.
- Enhanced cell attachment, proliferation, and differentiation were observed on the coated Ti substrates.
Conclusions:
- The developed bioactive composite coating containing HAp NPs and Mg particles shows significant potential for enhancing titanium implant bioactivity.
- This approach may promote bone formation and improve osseointegration.
- The findings suggest a promising strategy for developing next-generation dental and orthopedic implants.
