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>Influence of the Type and Method of Injection of Oxides Admixtures of Rare Earth Elements on Colour and other Properties of Dental Porcelain
Influence of the Type and Method of Injection of Oxides Admixtures of Rare Earth Elements on Colour and other Properties of Dental Porcelain
A glassceramic material, which can be used in stomatology for production of dentinal layer of the dental crown multilayer coating, was received. In order to colour the material the admixtures of Tb and Ce compounds were used, as well as composite admixture representing a mixture of Ce, Nd and La oxides. It was demonstrated that the admixture of Tb oxide tones the material only when it is used together with Ce oxide. It was found that the more admixtures of rare earth elements oxides are contained in the sample composition, the higher the colour strength of the sintered material is. The wave length for the test samples is in the range of 600~650 nm, which corresponds to the yellow-orange and orange-red spectral range.
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