Nanomechanical characterization of bioglass films synthesized by magnetron sputtering

Superior biofunctionality of dental implant fixtures uniformly coated with durable bioglass films by magnetron sputtering

“…The substrate preparation and RF-MS deposition procedures required to obtain 1 µm thick BG coatings were described in detail elsewhere [47]. Briefly, the sputtering parameters adopted in the present study were: 0.4 Pa argon pressure, 75 W sputtering power and 25 mm target-to-substrate distance.…”

“…Other techniques such as ion beam [44] and magnetron sputtering [45][46][47] have been also explored for depositing BG coatings on flat Ti substrates. Mistry et al [48] compared the performance of air microplasma sprayed HA and enamelled S53P4 BG coatings in clinical trials.…”

“…Recent progresses made by our research team on the BG coatings [47,51,52] encouraged us to apply the optimized deposition regimes to biofunctionalize real dental implants. The aims of this study include: i) setting a facile way to uniformly deposit, by radio-frequency magnetron sputtering (RF-MS), BG coatings with suitable mechanical resistance and biological behaviour onto dental screws that allow good cellular adhesion and proliferation without intervening in the complex mechanism that is stem cell differentiation; ii) contributing to the future development of a new generation of implants with superior lifetime and less revision.…”

Effect of particle size on processing of bioactive glass powder for atmospheric plasma spraying

“…These data show a significant worsening of flowability (increasing of HR and angle of repose values) after a 24 h soaking time in the climatic chamber. This change in flowability can only be attributed to the fact that the bioactive glass powder samples are highly hygroscopic [18]. As expected, the amount of adsorbed water increases when particle size decreases, due to the increase of specific surface area.…”

“…Due to the sensitivity of the BG powder to moisture, flowability tests of some fractions were also carried out with samples which had been left in contact with humid ambient in a climatic chamber in order to determine changes in flowability with adsorbed water [18]. The powder fraction was dried in an oven at 110 ºC and then cooled at room temperature in a desiccator.…”