Related Experiment Video
Updated: Sep 18, 2025
09:35
Distinctive Capillary Action by Micro-channels in Bone-like Templates can Enhance Recruitment of Cells for Restoration of Large Bony Defect
Published on: September 11, 2015
9.8K
Development of a Sustainable Bone Regeneration Material Using Apatite Paste Derived from Eggshell Waste
Masatsugu Hirota1, Chihiro Mochizuki2,3, Toshitsugu Sakurai1,4
1Department of Education for Dental Medicine, Tsurumi University School of Dental Medicine, 2-1-3, Tsurumi, Tsurumi-ku, Yokohama 230-8501, Kanagawa, Japan.
Journal of Functional Biomaterials
|June 25, 2025
Summary
Bone regeneration was enhanced using apatite pastes derived from eggshell waste (BAp). BAp demonstrated superior bone mineral density and bone mass compared to mineral hydroxyapatite, indicating its potential for bone repair.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Skeletal Biology
Background:
- Bone defects pose significant clinical challenges.
- Biomaterials derived from waste sources offer sustainable solutions for bone regeneration.
- Apatite materials are widely investigated for their osteoconductive properties.
Purpose of the Study:
- To evaluate the bone regenerative potential of eggshell-derived apatite (BAp) paste.
- To compare the efficacy of BAp paste with mineral hydroxyapatite (HAp) paste in a rat calvarial defect model.
- To characterize the physicochemical properties of BAp relevant to bone formation.
Main Methods:
- Preparation of BAp paste from eggshell waste and HAp paste as control.
- Surgical implantation of apatite pastes in rat calvarial defects using PTFE tubes.
- Assessment of bone formation via X-ray micro-computed tomography (μCT) and histological analysis.
- Characterization of BAp using Scanning Electron Microscopy (SEM) and X-ray Diffraction (XRD).
Main Results:
- BAp paste implantation resulted in a larger radiopaque area and significantly higher bone mineral density (BMD) compared to HAp paste (p < 0.05).
- Histological evaluation showed new bone formation with BAp, and BAp was resorbed unlike HAp.
- Bone mass (BM) was significantly higher in the BAp group than the HAp group (p < 0.05).
- SEM and XRD analyses indicated BAp is microcrystalline and poorly crystalline, potentially contributing to bone formation.
Conclusions:
- Eggshell-derived apatite (BAp) paste is a promising biomaterial for bone regeneration.
- BAp exhibits superior osteoconductivity and bone formation capacity compared to mineral hydroxyapatite.
- The crystallinity and magnesium content of BAp may enhance new bone formation, making it a viable alternative for bone defect repair.
