A new bioactive glass with extremely high crystallization temperature and outstanding biological performance

Area of Science:

• Biomaterials Science
• Materials Chemistry
• Biotechnology

Background:

• Development of advanced biomaterials is crucial for bone tissue engineering and regenerative medicine.
• Bioactive glasses offer promising properties for bone regeneration but require tailored thermal characteristics for fabrication.
• Novel materials with enhanced biocompatibility and specific thermal behaviors are needed for clinical translation.

Purpose of the Study:

• To design and prepare a new bioactive glass with a high crystallization temperature for thermal treatments.
• To evaluate the thermal properties and in vitro biological performance of the novel bioactive glass.
• To assess the potential of the bioactive glass for orthopedic applications using a 3D cellular model.

Main Methods:

• Melt-quenching route for glass preparation.
• Thermal analysis including heating microscopy and differential thermal analysis (DTA).
• Simulated Body Fluid (SBF) assay for bioactivity, ISO 10993 for biocompatibility, and a 3D cellular model with human bone marrow mesenchymal stem cells (BM-MSCs).

Main Results:

• The synthesized bioactive glass exhibited a very high crystallization temperature and remained amorphous after sintering.
• The glass demonstrated a strong apatite-forming ability in SBF, indicating good bioactivity.
• Biocompatibility tests confirmed the absence of cytotoxic effects.
• The 3D cellular model showed that the bioactive glass supported adhesion, colonization, and osteogenic differentiation of human BM-MSCs.

Conclusions:

• The novel bioactive glass possesses favorable thermal properties and excellent bioactivity.
• It effectively supports human BM-MSC growth and differentiation, indicating osteogenic potential.
• This material is a promising candidate for orthopedic applications, bone tissue engineering, and regenerative medicine, particularly when thermal processing is required.