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Hydrothermal Sterilization Improves Initial Osteoblast Responses on Sandpaper-Polished Titanium
Xingling Shi1, Lingli Xu2, Qingliang Wang3
1School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China. shixingling1985@hotmail.com.
Materials (Basel, Switzerland)
|August 5, 2017
Summary
Hydrothermal sterilization (HS) effectively removes hydrocarbon contamination from titanium implants, enhancing their bioactivity. This novel method creates a super hydrophilic surface with nanostructures, promoting osteoblast interactions for better bone healing.
Area of Science:
- Biomaterials Science
- Surface Chemistry
- Orthopedic Implants
Background:
- Hydrocarbon contamination on titanium (Ti) implants hinders bioactivity and osseointegration.
- Existing sterilization methods do not adequately address surface contamination.
- Surface modification during sterilization is crucial for implant performance.
Purpose of the Study:
- To investigate hydrothermal sterilization (HS) as a novel surface modification method for Ti implants.
- To evaluate the impact of HS on Ti surface properties and osteoblast response.
- To compare HS with conventional autoclaving (AC) for Ti implant sterilization.
Main Methods:
- Sandpaper-polished Ti specimens were subjected to either HS (121°C, 20 min in water) or AC (121°C, 20 min, dried).
- Surface characterization included analysis of nanostructure, carbon content, and hydrophilicity.
- Osteoblast (rat bone marrow-derived) attachment, proliferation, and mineralization were assessed.
Main Results:
- HS created nano-sized particles and a super hydrophilic surface on Ti.
- HS significantly reduced surface carbon content compared to AC.
- HS enhanced osteoblast attachment, proliferation, and mineralized nodule formation.
Conclusions:
- Hydrothermal sterilization effectively removes hydrocarbons and enhances Ti implant bioactivity.
- The biofunctionalization is attributed to nanostructure formation and hydrophilic surface conversion.
- HS is proposed as a universal sterilization method for Ti implants, independent of coatings.
