19 documents found, page 1 of 2
Streptococcus mutans biofilm formation and cell viability on polymer-infiltrate...
Bottino, M. A. [UNESP]; Pereira, S. M.B. [UNESP]; Amaral, M.; Milhan, N. V.M. [UNESP]; Pereira, C. A. [UNESP]; Camargo, S. E.A.Made available in DSpace on 2020-12-12T01:00:17Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-01-01; Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); Objective: The aim of this study was to investigate the biofilm formation and cell viability of a polymer-infiltrated ceramic (PIC) and an yttria-stabilized polycrystalline zirconium dioxide ceramic (Y-TZP). The null hypothesis was that ther...
Effect of the bur grit size on the flexural strength of a glass-ceramic
Kist, P. P.; Aurélio, I. L.; Amaral, M.; May, L. G.Made available in DSpace on 2019-09-11T20:51:35Z (GMT). No. of bitstreams: 0 Previous issue date: 2016; Resumo O estudo objetivou verificar a resistência flexural biaxial (RFB) de uma vitrocerâmica reforçada por leucita totalmente sinterizada, após desgaste com brocas diamantadas de diferentes granulações, e analisar a correlação desses valores com a rugosidade gerada na superfície desgastada. Para isso, 104 pa...
Fatigue limit of polycrystalline zirconium oxide ceramics: Effect of grinding a...
Pereira, G. K. R.; Silvestri, T.; Amaral, M.; Rippe, M. P.; Kleverlaan, C. J.; Valandro, L. F.Made available in DSpace on 2019-09-12T16:53:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2016; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); NUFFIC (Netherlands Organization for International Cooperation in Higher Education, The Netherlands) agency (Grants CAPES/NUFFIC) [056/14]; The following study aimed to evaluate the effect of grinding and low-temperature aging on the fatigue...
Diels–Alder functionalized carbon nanotubes for bone tissue engineering : in vi...
Mata, Diogo; Amaral, M.; Fernandes, A. J. S.; Colaço, B.; Gama, A.; Paiva, M. C.; Gomes, P. S.; Silva, R. F.; Fernandes, M. H.The risk-benefit balance for carbon nanotubes (CNTs) dictates their clinical fate. To take a step forward at this crossroad it is compulsory to modulate the CNT in vivo biocompatibility and biodegradability via e.g. chemical functionalization. CNT membranes were functionalised combining a Diels–Alder cycloaddition reaction to generate cyclohexene (–C6H10) followed by a mild oxidisation to yield carboxylic acid ...
Diels-Alder functionalized carbon nanotubes for bone tissue engineering: in vit...
Mata, D.; Amaral, M.; Fernandes, A. J. S.; Colaco, B.; Gama, A.; Paiva, M. C.; Gomes, P. S.; Silva, R. F.; Fernandes, M. H.The risk-benefit balance for carbon nanotubes (CNTs) dictates their clinical fate. To take a step forward at this crossroad it is compulsory to modulate the CNT in vivo biocompatibility and biodegradability via e.g. chemical functionalization. CNT membranes were functionalised combining a Diels-Alder cycloaddition reaction to generate cyclohexene (-C6H10) followed by a mild oxidisation to yield carboxylic acid ...
Extremely low wear rates in hip joint bearings coated with nanocrystalline diamond
Amaral, M.; Maru, M. M.; Rodrigues, S. P.; Gouvea, C. P.; Trommer, R. M.; Oliveira, F. J.; Achete, C. A.; Silva, R. F.A hip joint wear simulator is used for the first time to evaluate the performance of acetabular liners and femoral heads made of silicon nitride ceramic coated with nanocrystalline diamond (NCD), grown by a hot filament chemical vapor deposition (HFCVD) method. Wear is assessed by gravimetry, by which volume and linear wear are estimated. Even with only one million cycles of test, a very stimulating finding is ...
The High performance of nanocrystalline CVD diamond coated hip joints in wear s...
Maru, M. M.; Amaral, M.; Rodrigues, S. P.; Santos, R.; Gouvea, C. P.; Archanjo, B. S.; Trommer, R. M.; Oliveira, F. J.; Silva, R. F.; Achete, C. A.The superior biotribological performance of nanocrystalline diamond (NCD) coatings grown by a chemical vapor deposition (CVD) method was already shown to demonstrate high wear resistance in ball on plate experiments under physiological liquid lubrication. However, tests with a close-to-real approach were missing and this constitutes the aim of the present work. Hip joint wear simulator tests were performed with...
Diels–Alder functionalized carbon nanotubes for bone tissue engineering: in vit...
Mata, D.; Amaral, M.; Fernandes, A. J. S.; Paiva, M. C.; Gomes, Pedro de Sousa; Silva, R. F.; Fernandes, M. H.; Gama, Adelina; Colaço, Bruno
Self-mated tribological systems based on multilayer micro/nanocrystalline CVD d...
Salgueiredo, E.; Abreu, Cristiano; Amaral, M.; Oliveira, F. J.; Gomes, J. R.; Silva, R. F.The tribological response of multilayer micro/nanocrystalline diamond coatings grown by the hot filament CVD technique is investigated. These multigrade systems were tailored to comprise a starting microcrystalline diamond (MCD) layer with high adhesion to a silicon nitride (Si3N4) ceramic substrate, and a top nanocrystalline diamond (NCD) layer with reduced surface roughness. Tribological tests were carried ou...
Self-mated tribological systems based on multilayer micro/nanocrystalline CVD d...
Salgueiredo, E.; Abreu, C. S.; Amaral, M.; Oliveira, F. J.; Gomes, J. R.; Silva, R. F.The tribological response of multilayer micro/nanocrystalline diamond coatings grown by the hot filament CVD technique is investigated. These multigrade systems were tailored to comprise a starting microcrystalline diamond (MCD) layer with high adhesion to a silicon nitride (Si3N4) ceramic substrate, and a top nanocrystalline diamond (NCD) layer with reduced surface roughness. Tribological tests were carried ou...