Techniques for bone assessment and characterization: porcine hard palate case study.

Area of Science:

• Biomaterials Science
• Surgical Innovation
• Orthopedic Research

Background:

• Cleft palate repair complications like palatal fistulae necessitate effective bone regeneration strategies.
• Human hard palate bone data is scarce, limiting biomaterial development.
• Porcine bone models offer anatomical similarities for research.

Purpose of the Study:

• To evaluate physicochemical properties of pig hard palate bone.
• To compare pig bone characteristics with commercial hydroxyapatite (HA) for bone regeneration.
• To explore techniques for characterizing alternative biomaterials.

Main Methods:

• Chemical analysis using Energy Dispersive Spectroscopy (EDS) and X-ray Fluorescence (XRF).
• Fourier-Transform Infrared Spectroscopy (FTIR) for molecular composition.
• X-ray Diffraction (XRD) for crystalline phases and crystallinity.
• Density and porosity measurements.

Main Results:

• Pig hard palate bone contains calcium and phosphate ions, with minor elements like magnesium and zinc.
• The calcium phosphate molar ratio (Ca/P) was 1.1 ± 0.2.
• FTIR confirmed phosphates and collagen type I; XRD revealed octacalcium phosphate (OCP) as the predominant phase.
• Young pig bone exhibited lower crystallinity and smaller crystal size than HA.
• Porosity was 52.78 ± 2.91%, suggesting properties approaching compact bone.

Conclusions:

• Pig hard palate bone possesses a unique composition and structure, with OCP as a major phase.
• Its properties, including porosity and mineral content, make it a potential alternative biomaterial for bone regeneration.
• Further research is needed to understand how preparation and analysis area influence its mechanical properties.