Histopathological and Micro-CT Scan Evaluation of the Repair of Large Bone Lesions using Apatite Carbonate and Titanium-Containing Bioactive Glass in a Rabbit Model

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Published: Apr 18, 2025
DOI: https://doi.org/10.12681/jhvms.36453
Keywords:
Bone regeneration carbonate apatite bioactive glass titanium histopathology rabbit
S Moradi
Department of Clinical Science,School of Veterinary Medicine, Shiraz University, Shiraz, Iran
A Tabatabaei Naeini
Department of Clinical Science,School of Veterinary Medicine, Shiraz University, Shiraz, Iran
M Sayyari
Department of Pathology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
A Shaikhzadeh
Department of Clinical Science,School of Veterinary Medicine, Shiraz University, Shiraz, Iran
Abstract

In recent years, several techniques have been used to reconstruct large bone fractures, including various scaffolds and bone reparative materials, but the results have not been remarkable. Therefore, this study investigates and compares the effect of new scaffolds based on apatite carbonate and bioactive glasses containing titanium in promoting the healing process of large bone lesions in animal models in laboratory conditions. After constructing the scaffolds, in vivo studies were performed by creating four circular defects in the calvarial bones of 10 adult New Zealand rabbits, and then the cavities were randomly filled with bioactive glass powders containing titanium and apatite carbonate. The survival and proliferation of mesenchymal stem cells through the MTT method and bone defects in the studied groups were evaluated using different diagnostic imaging methods and histological analyses. The XRD and FTIR results confirmed the high purity of the fabricated Bg-Ca and Bg-Ti scaffolds. In the MTT method, the scaffolds made at a concentration of 10 mg/ml had no cytotoxicity against MSCs. Also, in total, microCT scan analyzes and histological findings showed a significant improvement in the healing process in rabbits treated with Bg-Ti and Bg-Ca compared to the group that received the Bg scaffold alone and in the control group.

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