Avaliação histológica do potencial osteoindutivo da matriz dentinária desmineralizada

Autores

  • Manoel Eduardo de Lima Machado University of São Paulo
  • Victor Di Donato Marques
  • Cleber Keiti Nabeshima University of São Paulo

Palavras-chave:

Materiais biocompatíveis, implantação dentária, dentina,

Resumo

Objetivo: A proposta deste estudo foi verificar a osteoindução da implantação xenogênica e ectópica de matriz dentinária desmineralizada (DDM) em tecido muscular de ratos em curto prazo. Métodos: Dez dentes humanos foram utilizados para obtenção da DDM. Acesso cirúrgico foi feito através de incisões resultando em duas bolsas na musculatura dorsal de 10 ratos Wistar, onde os implantes foram inseridos. Os animais foram divididos em 2 grupos: no primeiro grupo os implantes foram mantidos por um mês e o segundo grupo foram mantidos por dois meses. As biópsias foram realizadas no final do tempo experimental. Resultados: O exame histológico apresentou a presença de um intenso infiltrado inflamatório crônico, e em algumas áreas, osteoclastos foram observados em torno do material, nenhum foco de mineralização foi encontrado. Conclusão: Pode-se concluir que DDM implantado na musculatura dorsal de ratos no período de 1 ou 2 meses não resulta em osteoindução.

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Publicado

2013-02-05

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Artigo Original