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Journals and Conferences
New dental materials and their combinations increase the aesthetic and functional quality of treatment. A great improvement in the aesthetic treatment of discoloured teeth is the use of dental ceramic combined with composites.
Biodegradable polymers get more interest for the preparation of drug formulations. Their main advantage is their physiological safety. Polylactic acid is one of the biodegradable polymers. It was prepared by the direct polyesterification of lactic acid and by polymerisation of the cyclic oligomers. Both the polymers were identified by elementary analysis,… (More)
Five binders characterized by particle size and dissolution rate have been studied in order to evaluate their qualification for fluidized-bed granulation. For this purpose they were applied as powder and solution, respectively. Quality parameters of the granules and tablets obtained were compared. Compared with solutions of binders the dry incorporation of… (More)
In order to characterize physicochemical properties of binders rheological behaviour, wetting ability and film-formation tendency of the binder solutions were investigated. The results obtained were related to granule and tablet properties.
In connection with the preparation of solid sustained-release forms extrusion pellets were prepared. The conditions for the processing of the thermoplastics were determined. Lithium sulfate and caffeine served as model drugs. The drug release from the thermoplastics is insufficient. There was no evidence for a possible relation between the properties of the… (More)