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Cell Mol Biol (Noisy-le-grand) ; 70(6): 217-223, 2024 Jun 05.
Artigo em Inglês | MEDLINE | ID: mdl-38836657

RESUMO

Mesenchymal stem cells from bone marrow, such as bone marrow aspirate concentrate (BMAC) and cultured and isolated bone marrow mesenchymal stem cells (BM-MSCs), have been used as therapeutic alternatives to enhance remodeling in the bone. OBJECTIVE: This study aimed to evaluate the effects of BMAC and BM-MSCs on orthodontic tooth movements in rabbits. METHODS: A100- gram nickel-titanium closed-coil springs were used to initiate orthodontic tooth movement of the lower first premolars in 35 male New Zealand rabbits for 21 days. Using a split-mouth design, autologous BMAC or BM-MSCs were submucosally injected into the right sides of the lower jaw, while the left sides served as the control. On days 7, 14, and 21, a three-dimensional digital model scan was used to measure the amount of tooth movement. The microfocus computed tomography (Micro-CT) and histological findings were examined on day 0 as the baseline measurement and on days 7, 14, and 21. RESULTS: Compared to the control group, the quadrant receiving BMAC and BM-MSCs had a considerably greater amount of tooth movement. Histomorphometric analysis revealed that both BMAC and BM-MSCs had significantly higher numbers of osteoclasts and active bone-resorptive lacunae. The resorptive changes were greater in the BMAC and BM-MSCs groups than in the control group. CONCLUSION: The submucosal injection of BMAC and BM-MSCs accelerates orthodontic tooth movement (OTM) by decreasing bone density and supplying more osteoclast progenitor cells.


Assuntos
Células da Medula Óssea , Transplante de Células-Tronco Mesenquimais , Células-Tronco Mesenquimais , Osteoclastos , Técnicas de Movimentação Dentária , Microtomografia por Raio-X , Animais , Coelhos , Células-Tronco Mesenquimais/citologia , Células-Tronco Mesenquimais/metabolismo , Masculino , Técnicas de Movimentação Dentária/métodos , Transplante de Células-Tronco Mesenquimais/métodos , Células da Medula Óssea/citologia , Osteoclastos/citologia , Osteoclastos/metabolismo
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