| Texto completo | |
| Autor(es): Mostrar menos - |
Borges, Guilherme Almeida
;
Costa, Raphael Cavalcante
;
Nagay, Bruna Egumi
;
Sacramento, Catharina Marques
;
Ruiz, Karina Gonzales Silverio
;
de Almeida, Larissa Solano
;
Rossino, Luciana Sgarbi
;
Fortulan, Carlos Alberto
;
Rangel, Elidiane Cipriano
;
Barao, Valentim A. R.
;
Mesquita, Marcelo Ferraz
Número total de Autores: 11
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ACS APPLIED BIO MATERIALS; v. 6, n. 12, p. 14-pg., 2023-12-05. |
| Resumo | |
Abutment components (i.e., fixtures associated with oral implants) are essentially made of titanium (Ti), which is continuously exposed to the hash oral environment, resulting in scratching. Thus, such components need to be protected, and surface treatments are viable methods for overcoming long-term damage. Diamond-like carbon (DLC), an excellent protective material, is an alternative surface-treatment material for Ti abutments. Here, we demonstrate that a silicon interlayer for DLC film growth and the pulsed-direct current plasma-enhanced chemical vapor deposition (DC-PECVD) method enables the deposition of an enhanced protective DLC film. As a result, the DLC film demonstrated a smooth topography with a compact surface. Furthermore, the DLC film enhanced the mechanical (load-displacement, hardness, and elastic modulus) and tribological properties of Ti as well as increased its corrosion resistance (16-fold), which surpassed that of a bare Ti substrate. The biofilm formed (Streptococcus sanguinis) after 24 h exhibited an equal bacterial load (similar to 7 Log colony-forming units) for both the groups (Ti and DLC). In addition, the DLC film exhibited good cytocompatibility, owing to its noncytotoxicity toward human gingival fibroblast cells. Therefore, DLC deposition via DC-PECVD can be considered to be a promising protective and cytocompatible alternative for developing implant abutments with enhanced mechanical, tribological, and electrochemical properties. (AU) | |
| Processo FAPESP: | 19/17238-6 - Revestimento antibacteriano com potencial fotocatalítico sob luz visível para implantes dentários: estudos in vitro, in situ e in vivo |
| Beneficiário: | Bruna Egumi Nagay |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 20/10436-4 - Síntese, caracterização e desempenho biológico de nanopolímeros pH-sensitivos produzidos por impressão molecular para o tratamento das infecções peri-implantares |
| Beneficiário: | Raphael Cavalcante Costa |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |