Enhancing glass ionomer cement features by using the calcium phosphate nanocomposite

Area of Science:

• Biomaterials Science
• Dental Materials Science
• Nanotechnology in Medicine

Background:

• Glass ionomer cements (GIC) are widely used in dentistry but can benefit from improved mechanical properties.
• Calcium phosphate nanoparticles (nCaP) offer potential for enhancing biomaterial performance.

Purpose of the Study:

• To synthesize and characterize Glass ionomer cements (GIC) modified with calcium phosphate nanoparticles (nCaP).
• To evaluate the mechanical properties, structural integrity, and biological response of the novel nCaP/GIC composite.

Main Methods:

• Synthesis of nCaP/GIC composite.
• Mechanical testing: compression and diametral tensile strength.
• Characterization: SEM, EDX, XRD, FTIR.
• Biological evaluation: cytotoxicity and cell viability assays on human bone marrow mesenchymal stem cells.

Main Results:

• nCaP/GIC demonstrated statistically significant improvements in mechanical properties, showing higher resistance to compression and diametral traction (p<0.001).
• SEM revealed uniform distribution of nCaP within the ionomer matrix.
• EDX and XRD confirmed the presence of hydroxyapatite and calcium β-triphosphate phases.
• FTIR analysis confirmed the incorporation of nCaP.
• nCaP/GIC exhibited adequate cell viability and non-cytotoxic behavior.

Conclusions:

• The novel nCaP/GIC composite possesses superior mechanical properties compared to unmodified GIC.
• The material demonstrates favorable biocompatibility, with adequate cell viability and non-cytotoxic effects.
• These findings highlight the promising potential of nCaP/GIC for advanced dental applications.