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Chapter
Polyelectrolyte Multilayers
The films known as polyelectrolyte multilayers are made by alternating deposition of polyanions (negatively charged polymers) and polycations (positively charged polymers). The development of these films, inve...
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Article
Characterization and his
Several studies, devoted to the osteogenic potentialities of natural CaCO3 have already been reported. However, it seems questionable if the data obtained from natural calcium carbonates can be extrapolated to...
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Chapter and Conference Paper
How much can you learn about thin adsorbed layers with optical techniques?
The optical response of a dielectric interfacial film can be completely described, to second order in the film thickness, by three parameters called optical invariants. These allow the extraction of a maximum ...
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Article
The Structure of Antigen-Antibody Layers Adsorbed on Silica Surfaces: a Scanning Angle Reflectometry Study
Scanning Angle Reflectometry (SAR) is used to investigate the structure of protein layers deposited sequentially, first the antigen and then the antibody, on a silica surface. The reflectivity curves are analy...
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Article
Long-term behaviour of a hydroxyapatite/collagen-glycosaminoglycan biomaterial used for oral surgery: a case report
A composite biomaterial consisting of hydroxyapatite with a collagen-glycosaminoglycan coating was studied for evaluation of the osteogenesis after long-term implantation in a human freshly extracted alveolar ...
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Article
Structural analyses of carbonate-containing apatite samples related to mineralized tissues
Crystallographic and structural aspects of two carbonate-containing (one with and another without Zn ions) and a pure hydroxyapatite sample were investigated by high resolution electron microscopy. For five di...
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Article
Role of adsorbed fluoride ions on the dissolution of synthetic hydroxyapatite
The dissolution kinetics at 37°C and for constant pH values of 5.0 and 6.0 are studied for calcium hydroxyapatite (HAp) equilibrated at pH 7.0 in the presence of 1 or 10 ppm of F-. Experiments are realized using ...
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Article
Human amelogenesis: high resolution electron microscopy of nanometer-sized particles
Growth of inorganic crystals of enamel is described as a two-stage process with growth of ribbon-like crystals in length and width, followed by their development in thickness. In early stages of crystal growth...
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Article
Human amelogenesis I: High resolution electron microscopy study of ribbon-like crystals
Ribbon-like crystals, from develo** enamel of human fetuses, were studied by high resolution electron microscopy. These crystals were classically described as the first organized mineral formed during amelog...
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Chapter and Conference Paper
Scanning and Transmission Electron Microscopy, X-ray Microanalysis and Electron Diffraction of Pineal Concretions in Aging Rats
The pineal gland of the rat is considered to play an important neuroendocrine role in chronobiology, circadian rhythmicity and transduction of certain external stimuli [1]. Several mammalian species, including...
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Article
Kinetics of dissolution of calcium hydroxyapatite powder. III: pH and sample conditioning effects
The kinetics of dissolution of synthetic hydroxyapatite powder (HAP) were studied at 37°C and constant pH in the pH range 3.7–6.9 by continuously recording proton uptake and calcium release. The effect of samp...
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Article
Role of intestinal mucus in crystal biogenesis: an electron-microscopical, diffraction and X-ray microanalytical study
In the posterior intestine of the sea-water eel, mucus plays an important role in biocrystallization of calcium ions. By means of transmission and scanning electron microscopy associated with X-ray microanalys...
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Article
Transmission electron microscopy of lattice planes in human alveolar bone apatite crystals
Periodic fringes corresponding to six different lattice planes have been observed in apatite crystals of human normal alveolar bone by transmission electron microscopy. Three of these sets of fringes have spac...
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Article
Scanning electron microscopy and X-ray diffraction studies of human bone oxalosis
Postmortem scanning electron microscopy of human phalanges in a chronic uremic hemodialysis patient with hyperparathyroidism showed the presence of confluent abnormal rounded formations with a radial rosette-l...
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Article
Stages in the dissolution of human enamel crystals in dental caries
Various stages in monocrystal dissolution occurring during human enamel caries were studied by high resolution transmission electron microscopy. After the development of a central core lesion, two mechanisms b...
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Article
The study of human dentine with secondary ion microscopy and electron diffraction
The highly polished surface of serial transverse ground sections of human coronal dentine were coated under vacuum with an aluminium grid and studied with a SMI 300 ion microanalyser (Cameca, Paris) based on m...
