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Computed Tomography and Optical Imaging of Osteogenesis-angiogenesis Coupling to Assess Integration of Cranial Bone Autografts and Allografts
Published on: December 22, 2015
Pattern of osteogenesis during onlay bone graft healing
Miguel Gustavo Setúbal Andrade1, David Costa Moreira, Danilo Borges Dantas
1Postgraduate Program in Oral Medicine and Oral and Maxillofacial Surgery, Bahia Foundation for Science Development, Salvador, Brazil. miguelsetubal@hotmail.com
Summary
Onlay bone grafts heal through osteogenesis, particularly in the lateral region. Allogeneic grafts and platelet-rich plasma (PRP) show potential to enhance bone formation during mandible healing.
Area of Science:
- Oral and Maxillofacial Surgery
- Regenerative Medicine
- Bone Tissue Engineering
Background:
- Mandible bone defects require effective grafting strategies.
- Understanding the healing process of onlay bone grafts is crucial for successful reconstruction.
Purpose of the Study:
- To investigate the osteogenic healing mechanisms of onlay bone grafts against the mandible cortex.
- To evaluate the influence of graft type and platelet-rich plasma (PRP) on bone regeneration.
Main Methods:
- Corticocancellous bone grafts (autologous and allogeneic) were applied to 40 rabbits' mandibles, with one side receiving PRP.
- Histological analysis using hematoxylin-eosin and toluidine blue staining was performed at multiple time points (3-56 days).
- Quantitative measurement of new bone area and statistical analysis (Wilcoxon, Bonferroni tests) were employed.
Main Results:
- Osteogenesis was significantly higher in the lateral region of the graft interface (P < .05).
- Platelet-rich plasma (PRP) demonstrated a trend towards improved bone neoformation, especially with allogeneic grafts.
- Bone formation increased up to day 14, with no linear behavior observed across all tested variables (graft type, PRP, time).
Conclusions:
- Onlay bone graft healing involves osteogenesis at the lateral region and between the graft and host mandible.
- Allogeneic grafts and the application of PRP appear to promote enhanced bone formation.
- The healing process is complex, with optimal outcomes influenced by graft material and regenerative factors.
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