Effect of biofunctionalized implant surface on osseointegration: a histomorphometric study in dogs

Autor(es)

Raquel R. M. Barros ^[1] ; Arthur B. Novaes Jr. ^[2] ; Vula Papalexiou ^[3] ; Sérgio L. S. Souza ^[4] ; Mário Taba Jr. ^[5] ; Daniela B. Palioto ^[6] ; Márcio F. M. Grisi ^[7]

Afiliação do(s) autor(es)

^[1] University of São Paulo. Ribeirão Preto Dental School. Department of Oral and Maxillofacial Surgery and Traumatology and Periodontology - Brasil

^[2] University of São Paulo. Ribeirão Preto Dental School. Department of Oral and Maxillofacial Surgery and Traumatology and Periodontology - Brasil

^[3] University of São Paulo. Ribeirão Preto Dental School. Department of Oral and Maxillofacial Surgery and Traumatology and Periodontology - Brasil

^[4] University of São Paulo. Ribeirão Preto Dental School. Department of Oral and Maxillofacial Surgery and Traumatology and Periodontology - Brasil

^[5] University of São Paulo. Ribeirão Preto Dental School. Department of Oral and Maxillofacial Surgery and Traumatology and Periodontology - Brasil

^[6] University of São Paulo. Ribeirão Preto Dental School. Department of Oral and Maxillofacial Surgery and Traumatology and Periodontology - Brasil

^[7] University of São Paulo. Ribeirão Preto Dental School. Department of Oral and Maxillofacial Surgery and Traumatology and Periodontology - Brasil

• Tipo de documento: Artigo Científico
• Fonte: Brazilian Dental Journal; v. 20, n. 2, p. 91-98, 2009-00-00.

Resumo

Among the different properties that influence bone apposition around implants, the chemical or biochemical composition of implant surface may interfere on its acceptance by the surrounding bone. The aim of this study was to investigate if a biofunctionalization of implant surface influences the bone apposition in a dog model and to compare it with other surfaces, such as a microstructured created by the grit-blasting/acid-etching process. Eight young adult male mongrel dogs had the bilateral mandibular premolars extracted and each one received 6 implants after 12 weeks, totaling 48 implants in the experiment. Four groups of implants were formed with the same microrough topography with or without some kind of biofunctionalization treatment. After histomorphometric analysis, it was observed that the modified microstructured surface with a "low concentration of the bioactive peptide" provided a higher adjacent bone density (54.6%) when compared to the other groups (microstructured + HA coating = 46.0%, microstructured only = 45.3% and microstructured + "high concentration of the bioactive peptide" = 40.7%), but this difference was not statistically significant. In conclusion, biofunctionalization of the implant surface might interfere in the bone apposition around implants, especially in terms of bone density. Different concentrations of bioactive peptide lead to different results. (AU)

• Processo FAPESP: 05/60839-8 - Efeito de superfície de implante bioativa na osseointegração e nas dinâmicas de cicatrização óssea: estudo histomorfométrico em cães
• Beneficiário: Raquel Rezende Martins de Barros
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 06/56020-6 - Superfície de implante bioativa - parte I: efeito de superfície de implante bioativa na osseointegração e nas dinâmicas de cicatrização óssea. Estudo histomorfométrico em cães - parte II: pode uma superfície de implante bioativa melhorar a capacidade óssea de jumping gap?
• Beneficiário: Arthur Belem Novaes Junior
• Modalidade de apoio: Auxílio à Pesquisa - Regular