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Calvarial Model of Bone Augmentation in Rabbit for Assessment of Bone Growth and Neovascularization in Bone Substitution Materials

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Published on: August 13, 2019

Enhanced bone regeneration by silicon-substituted hydroxyapatite derived from cuttlefish bone.

Beom-Su Kim^1,2, Sun-Sik Yang³, Jung-Hoon Yoon⁴

¹Wonkwang Bone Regeneration Research Institute, Wonkwang University, Iksan, Korea.

Clinical Oral Implants Research

|June 16, 2015

Summary

Silicon-substituted cuttlefish bone hydroxyapatite (Si-CB-HAp) enhances bone formation. This novel material shows improved bioactivity and bone regeneration in vivo, indicating its potential as a bone graft substitute.

Keywords:

bone substitute cuttlefish bone hydrothermal hydroxyapatite silicon solvothermal

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Area of Science:

Biomaterials Science
Skeletal Biology
Biomineralization

Background:

Cuttlefish bone (CB) is a promising natural source for bone graft materials.
Silicon (Si) is crucial for bone formation and calcification processes.
Enhancing the bioactivity of CB-derived hydroxyapatite (CB-HAp) is key for improved bone regeneration.

Purpose of the Study:

To prepare silicon-substituted CB-derived hydroxyapatite (Si-CB-HAp).
To evaluate the impact of Si substitution on the bioactivity and bone formation capacity of CB-HAp.
To assess the potential of Si-CB-HAp as an advanced bone graft material.

Main Methods:

Si-CB-HAp was synthesized using hydrothermal and solvothermal methods.
Microstructure and composition were analyzed using SEM, XRD, and EDS.
In vitro bioactivity was tested with human mesenchymal stem cells.
In vivo bone regeneration was evaluated in a rabbit calvarial defect model.

Main Results:

Si-CB-HAp contained 0.77 wt% Si, preserving the original microstructure.
Silicon enhanced human mesenchymal stem cell proliferation and attachment.
Osteoblast differentiation was promoted by Si substitution, evidenced by ALP activity and gene expression.
In vivo studies showed superior bone formation with Si-CB-HAp compared to CB-HAp.

Conclusions:

Si-CB-HAp demonstrates enhanced bioactivity and osteogenic potential.
The material effectively promotes bone regeneration in vivo.
Si-CB-HAp shows significant promise as a bioactive bone graft material for enhancing bone healing.