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Updated: Jun 29, 2026
Calvarial Model of Bone Augmentation in Rabbit for Assessment of Bone Growth and Neovascularization in Bone Substitution Materials
Published on: August 13, 2019
Angiogenesis in newly augmented bone observed in rabbit calvarium using a titanium cap
Yutaka Yamada1, Takanori Tamura, Kotaro Hariu
1Department of Periodontology, Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan. yamada-y @dent.nihon-u.ac.jp
This study presents a new method to observe blood vessel growth (angiogenesis) in augmented bone. The technique successfully visualized new blood vessels forming within beta-tricalcium phosphate (beta-TCP) bone grafts.
Area of Science:
- Biomaterials Science
- Surgical Innovation
- Vascular Biology
Background:
- Rigid support devices are crucial for mineralized bone development in bone augmentation.
- Blood supply is critical for bone augmentation, yet angiogenesis in augmented bone is understudied.
Purpose of the Study:
- To evaluate a novel method for observing angiogenesis in newly augmented bone.
- To assess blood vessel formation within beta-tricalcium phosphate (beta-TCP) bone grafts.
Main Methods:
- Custom-made titanium caps were implanted onto rabbit calvaria.
- Caps were filled with granulated beta-tricalcium phosphate (beta-TCP).
- MICROFIL perfusion and 3D vascular casting were used to visualize vasculature.
Main Results:
- Newly generated blood vessels were observed extending beyond existing bone.
- Angiogenesis occurred within the inter-granular beta-TCP material.
- Histological examination confirmed the vascularization patterns.
Conclusions:
- The developed method effectively visualizes angiogenesis in hard tissue.
- This technique allows for pre-histological assessment of vascularization in bone augmentation.
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