Related Experiment Video
Updated: Feb 3, 2026
08:41
Calvarial Model of Bone Augmentation in Rabbit for Assessment of Bone Growth and Neovascularization in Bone Substitution Materials
Published on: August 13, 2019
8.9K
Bone Healing in Rabbit Calvaria Defects Using a Synthetic Bone Substitute: A Histological and Micro-CT Comparative
Minas Leventis1, Peter Fairbairn2, Chas Mangham3
1Laboratory of Experimental Surgery and Surgical Research N. S. Christeas, Medical School, University of Athens, 75 M. Assias Street, Athens 115 27, Greece. mlevent@dent.uoa.gr.
Materials (Basel, Switzerland)
|October 20, 2018
Summary
Beta-tricalcium phosphate (β-TCP) and calcium sulfate (CS) bone graft materials demonstrated effective bone regeneration in rabbit calvariae defects. This novel alloplastic material showed comparable results to bovine xenografts, promoting healing and graft resorption.
Area of Science:
- Biomaterials Science
- Orthopedic Research
- Regenerative Medicine
Background:
- Bioactive alloplastic materials like beta-tricalcium phosphate (β-TCP) and calcium sulfate (CS) are utilized in bone regeneration.
- These materials are employed in orthopedic and dental applications.
Purpose of the Study:
- To compare the efficacy of a novel β-TCP/CS composite (EthOss) against a bovine xenograft and spontaneous healing.
- To evaluate bone regeneration and graft resorption in standardized cranial defects.
Main Methods:
- Standardized 8 mm bicortical bone defects were created in rabbit calvariae.
- Defects were treated with β-TCP/CS, bovine xenograft, or left empty for spontaneous healing.
- Bone tissue was analyzed after eight weeks using histology and micro-computed tomography (micro-CT).
Main Results:
- Defects treated with β-TCP/CS exhibited the highest bone regeneration and graft resorption, though not statistically significant.
- Spontaneous healing resulted in lower trabecular number and higher trabecular separation compared to treated sites.
- Bovine xenograft treatment led to higher trabecular thickness than β-TCP/CS or spontaneous healing.
Conclusions:
- The novel β-TCP/CS grafting material functions effectively as a bioactive and biomimetic alloplastic bone substitute.
- This material shows promise for bone regenerative procedures in cranial defects.
- Results suggest potential for β-TCP/CS in orthopedic and dental bone repair.
Related Concept Videos
01:55Bone Structure
51.7K
Within the skeletal system, the structure of a bone, or osseous tissue, can be exemplified in a long bone, like the femur, where there are two types of osseous tissue: cortical and cancellous.
51.7K
01:40Bone Remodeling
40.4K
Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
40.4K
01:27Compact Bone
16.5K
Most bones contain compact and spongy osseous tissue, but their distribution and concentration vary based on the bone's overall function.
Compact bone, also called cortical bone, is the denser, stronger of the two types of bone tissue. It is found under the periosteum and in the diaphyses of long bones, where it provides support and protection. The microscopic structural unit of compact bone is called an osteon, or haversian system. Each osteon is composed of concentric rings of calcified...
Compact bone, also called cortical bone, is the denser, stronger of the two types of bone tissue. It is found under the periosteum and in the diaphyses of long bones, where it provides support and protection. The microscopic structural unit of compact bone is called an osteon, or haversian system. Each osteon is composed of concentric rings of calcified...
16.5K
01:29Bone Disorders
5.4K
Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
5.4K
01:12The Hyoid Bone
5.0K
The hyoid bone is a small U-shaped bone located in the upper neck at the level of the inferior mandible, with its tips pointing posteriorly. It does not directly articulate with any other bone in the body. The hyoid acts as the attachment site for the tongue, the larynx, and the pharynx. It is held in position by a series of small muscles attached from above or below. These muscles help to move the hyoid up/down or forward/back in coordination with movements of the tongue, larynx, and pharynx...
5.0K
01:09Spongy Bone
7.9K
All bones comprise an outer layer of compact bone, and an interior made up of spongy bone tissue, also called cancellous or trabecular bone. In long bones, spongy bone tissue is mainly found in the interior of the epiphyses (broad ends of the bone).
Spongy bone is more porous, and less dense compared to compact bone. It is composed of concentric lamellae that are arranged irregularly to form the trabecular network. In some bones, the spaces between trabeculae contain red marrow, where...
Spongy bone is more porous, and less dense compared to compact bone. It is composed of concentric lamellae that are arranged irregularly to form the trabecular network. In some bones, the spaces between trabeculae contain red marrow, where...
7.9K