Compósitos de wollastonita e fosfato de tricálcio para a regeneração óssea

Autores

DOI:

https://doi.org/10.33448/rsd-v11i9.31662

Palavras-chave:

Biomateriais; Regeneração Óssea; Fosfatos de cálcio; Silicato de cálcio.

Resumo

Nas últimas décadas, os pesquisadores da bioengenharia tecidual óssea têm se voltado para o desenvolvimento e aperfeiçoamento de biocerâmicas capazes de apresentar características físico-químicas semelhantes ao tecido ósseo, visando a mimetizar os eventos celulares e mecanismos envolvidos na osteogênese. Dentre os materiais utilizados, a wollastonita (W) tem se destacado nos últimos anos, principalmente em função da sua bioatividade; e o fosfato de tricálcio (TCP), em especial devido à sua osteoindutividade e osteocondutividade. Tendo em vista as suas composições iônicas e as propriedades físico-químicas da W e do TCP, os cientistas têm associado estes dois materiais durante a síntese de biocerâmicas que unem as características de cada material em um único biomaterial, denominado compósito. Esta concepção possibilita uma variedade de associação que viabiliza melhorias no comportamento biológico destes materiais. Consequentemente, os compósitos de W/TCP têm apresentado excelente desempenho, in vitro e in vivo, pois passam a exibir propriedades fundamentais para a regeneração óssea. Estas características indicam o uso destes novos biomateriais em aplicações clínicas futuras, em especial nos casos de perdas ósseas extensas, que permanecem sendo um grande desafio para os cientistas e profissionais da área biomédica. Contudo, apesar dos avanços alcançados, muitas questões precisam ser esclarecidas, determinantes para compreender os mecanismos envolvidos na osteogênese, após implantação. Diante do exposto, o presente trabalho tem por objetivo contextualizar a utilização dos compósitos de W/TCP para a regeneração óssea, a fim de subsidiar novos estudos necessários para identificar o comportamento biológico destas biocerâmicas e assegurar a utilização na prática clínica.

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04/07/2022

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SANTOS, G. G. dos; VASCONCELOS, L. Q. .; BARRETO, I. C. .; MIGUEL, F. B. .; ARAÚJO, R. P. C. de . Compósitos de wollastonita e fosfato de tricálcio para a regeneração óssea. Research, Society and Development, [S. l.], v. 11, n. 9, p. e12011931662, 2022. DOI: 10.33448/rsd-v11i9.31662. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/31662. Acesso em: 22 dez. 2024.

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