Design and surface characterization of micropatterned silica coatings for zirconia dental implants

• Tipo: Artigo em Revista Científica Internacional
• Data: 2022

Autores

Moreira, A (Autor) Outra; Madeira, S (Autor) Outra; Buciumeanu, M (Autor) Outra; Fialho, J (Autor) Outra; Carvalho, A (Autor) Outra; Silva, F (Autor) Outra; Fernando Mendes Monteiro (Autor) FEUP; Carames, J (Autor) Outra

Revista

Título: Journal of the Mechanical Behavior of Biomedical Materials

Vol. 126

ISSN: 1751-6161

Editora: Elsevier

Indexação

ISI Web of Knowledge - 7 Citações

Scopus - 7 Citações

Outras Informações

ID Authenticus: P-00V-WB1

DOI: 10.1016/j.jmbbm.2021.105060

Abstract (EN): The use of zirconia as an alternative biomaterial for titanium implants has been increasing due to its biocompatibility, favorable aesthetic features, less potential for early plaque accumulation and mechanical properties. Despite the developed efforts, strategies to promote an effective osseointegration are still enough. In this sense and combining the silica properties to improve bone formation with the micropatterning guidance characteristics, silica coatings with micropatterns were designed and evaluated regarding their hydrophilicity and integrity through resistance to scratch and friction tests against femoral bone plates (simulating implant insertion). A combined sol-gel and soft-lithography techniques were used to produce silica coatings onto zirconia substrates and different techniques were used to characterize the micropatterned silica coatings. The results revealed that the production of lines and pillars micropatterns increases the surface roughness (Ra values) and improves the surface strength adhesion. Through the scratch test, it was possible to verify that the integrity and topography characteristics of all micropatterned coatings were not significantly affected after the friction test meaning that their function is not compromised after implant insertion. Additionally, the lines micropattern was the one that presented the highest hydrophilicity for distilled water, thus being a promising surface to promote improved osseointegration. The combined use of different surface micropatterns could potentially be used to guide bone apposition and avoiding peri-implantitis.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 11