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Design and fabrication of high-performance injectable self-setting trimagnesium phosphate
Jiawei Liu1, Wen Hou1, Wenying Wei1
1State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Biomedical Materials and Engineering Research Center of Hubei Province, Wuhan University of Technology, Wuhan 430070, China.
Bioactive Materials
|June 19, 2023
Summary
A new trimagnesium phosphate cement (TMPC) offers high strength, injectability, and biocompatibility for orthopedic implants. This magnesium phosphate bone cement system overcomes limitations of existing materials for improved clinical use.
Area of Science:
- Orthopedic biomaterials
- Inorganic chemistry
- Materials science
Background:
- Magnesium phosphate bone cement is favored for orthopedic implants due to rapid setting and high early strength.
- Current challenges include achieving simultaneous injectability, high strength, and biocompatibility.
- Existing magnesium phosphate cements face limitations in clinical application.
Purpose of the Study:
- To develop a high-performance magnesium phosphate bone cement system with improved properties.
- To establish a trimagnesium phosphate cement (TMPC) with applicable injectability, high strength, and biocompatibility.
- To investigate the influence of the magnesium-to-phosphate ratio on cement properties.
Main Methods:
- Development of a trimagnesium phosphate cement (TMPC) system.
- Monitoring hydration pH and electroconductivity to understand reaction mechanisms.
- In vitro biocompatibility and bone-filling capacity assessments.
Main Results:
- TMPC exhibits high early strength, low curing temperature, neutral pH, and excellent injectability.
- The magnesium-to-phosphate ratio effectively controls hydration products, transformation, and hydration speed.
- TMPC demonstrates outstanding in vitro biocompatibility and bone-filling capacity.
- The material overcomes critical limitations of previously studied magnesium phosphate cements.
Conclusions:
- The developed TMPC system offers a promising alternative for orthopedic bone cement applications.
- The magnesium-to-phosphate ratio is a key factor in tailoring TMPC properties.
- TMPC presents a potential clinical alternative to polymethylmethacrylate and calcium phosphate bone cements.
