Morphological Integrated Preparation Method and Implementation of Inorganic/Organic Dual-Phase Composite Gradient...

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Regenerative Medicine

Background:

• Large bone defects pose a significant clinical challenge, often requiring artificial bone substitutes.
• Current artificial bone materials fail to fully replicate the complex structure and function of autologous bone.
• There is a critical need for advanced bone graft materials that bridge the gap between artificial and natural bone.

Purpose of the Study:

• To develop a continuous preparation method for inorganic/organic biphasic composite gradient biomimetic bulk bone scaffolds.
• To precisely control the gradient structure and composition of the bone scaffolds.
• To evaluate the physicochemical and biological properties of the novel bone scaffolds.

Main Methods:

• Construction of a controllable gradient hybrid forming platform for dual-phase biomaterials.
• Implementation of a feeding control strategy for precise delivery of sodium alginate/gelatin and hydroxyapatite.
• Extrusion of biphasic composite materials to form gradient bone scaffolds with controlled porosity and composition.

Main Results:

• The prepared scaffolds exhibited a gradient structure and composition with desirable microscopic porosity.
• Mechanical properties of the scaffolds closely approximated those of human bone tissue.
• In vitro cell experiments demonstrated excellent biocompatibility and bioactivity of the scaffolds.

Conclusions:

• The study presents a novel bone scaffold preparation technology and equipment for tissue engineering.
• The developed gradient biomimetic bone scaffolds show significant research value and clinical application potential.
• This advancement offers a promising alternative for repairing large bone defects.