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Molecular Response to Nanopatterned Implants in the Human Jaw Bone.
Karazisis, Dimitrios; Omar, Omar; Petronis, Sarunas; Thomsen, Peter; Rasmusson, Lars.
Afiliação
  • Karazisis D; Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, 405 30 Gothenburg, Sweden.
  • Omar O; Department of Oral and Maxillofacial Surgery, Sahlgrenska Academy, University of Gothenburg, 405 30 Gothenburg, Sweden.
  • Petronis S; Department of Biomedical Dental Sciences, College of Dentistry, Imam Abdulrahman bin Faisal University, Dammam 34212, Saudi Arabia.
  • Thomsen P; Chemistry, Biomaterials and Textiles, RISE Research Institutes of Sweden, 501 15 Borås, Sweden.
  • Rasmusson L; Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, 405 30 Gothenburg, Sweden.
ACS Biomater Sci Eng ; 7(12): 5878-5889, 2021 12 13.
Article em En | MEDLINE | ID: mdl-34851620
Implant surface modification by nanopatterning is an interesting route for enhancing osseointegration in humans. Herein, the molecular response to an intentional, controlled nanotopography pattern superimposed on screw-shaped titanium implants is investigated in human bone. When clinical implants are installed, additional two mini-implants, one with a machined surface (M) and one with a machined surface superimposed with a hemispherical nanopattern (MN), are installed in the posterior maxilla. In the second-stage surgery, after 6-8 weeks, the mini-implants are retrieved by unscrewing, and the implant-adherent cells are subjected to gene expression analysis using quantitative polymerase chain reaction (qPCR). Compared to those adherent to the machined (M) implants, the cells adherent to the nanopatterned (MN) implants demonstrate significant upregulation (1.8- to 2-fold) of bone-related genes (RUNX2, ALP, and OC). No significant differences are observed in the expression of the analyzed inflammatory and remodeling genes. Correlation analysis reveals that older patient age is associated with increased expression of proinflammatory cytokines (TNF-α and MCP-1) on the machined implants and decreased expression of pro-osteogenic factor (BMP-2) on the nanopatterned implants. Controlled nanotopography, in the form of hemispherical 60 nm protrusions, promotes gene expressions related to early osteogenic differentiation and osteoblastic activity in implant-adherent cells in the human jaw bone.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Osteogênese / Osseointegração Limite: Humans Idioma: En Revista: ACS Biomater Sci Eng Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Suécia

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Osteogênese / Osseointegração Limite: Humans Idioma: En Revista: ACS Biomater Sci Eng Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Suécia