Abstract
Implant materials used in orthopedics surgery have demonstrated some disadvantages, such as metallic corrosion processes, generation of wear particles, inflammation reactions and bone reabsorption in the implant region. The diamond produced through hot-filament chemical vapour deposition method is a new potential biomedical material due to its chemical inertness, extreme hardness and low coefficient of friction. In the present study we analysis two samples: the microcrystalline diamond and the nanocrystalline diamond. The aim of this study was to evaluate the surface properties of the diamond samples by scanning electron microscopy, Raman spectroscopy and atomic force microscopy. Cell viability and morphology were assessed using thiazolyl blue tetrazolium bromide, cytochemical assay and scanning electron microscopy, respectively. The results revealed that the two samples did not interfere in the cell viability, however the proliferation of fibroblasts cells observed was comparatively higher with the nanocrystalline diamond.
Highlights
All implants intended for use in the human locomotive system must be resistant to corrosion, fatigue and wear
The evaluation by scanning electron microscopy (SEM) demonstrated that the surface of microcrystalline diamond (MD) and nanocrystalline diamond (ND) are different
The Raman spectrum of MD demonstrated one peak in 1331,6 cm–1 in Figure 2b, which indicates high purity of this diamond evidenced by the absence of other peaks
Summary
All implants intended for use in the human locomotive system must be resistant to corrosion, fatigue and wear. Numerous studies in vivo and in vitro, suggest that degraded products released by these alloys trigger inflammatory processes that cause damage to adjacent tissues[4,5,6] Alloy steels such as cobalt-chromium, cobalt‐chromium-molybdenum and ceramics release degraded products causing an increase in the amount of inflammatory mediators responsible for bone reabsorption and leading to unfastening and loosening of prostheses[7]. These alloys, consisting of nickel, cobalt, chromium, tantalum, titanium and vanadium, when in contact with the
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