摘要:
The method of preserving a perishable cosmetic and/or pharmaceutical preparation includes adding bioactive glass particles to the preparation, preferably in amounts up to 10 percent by weight. The bioactive glass particles preferably have particle sizes (d50) less than or equal to 10 μm and contain from 40 to 60 wt. % SiO2, 10 to 30 wt. % CaO, 10 to 35 wt. % Na2O, 2 to 8 wt. % P2O5, 0 to 25 wt. % CaF2, 0 to 10 wt. % B2O3, 0 to 8 wt. % K2O and/or 0 to 5 wt. % MgO. A liquid cosmetic preparation with alcohol content insufficient for preservation is preserved in an inconspicuous manner by adding bioactive glass particles with particle sizes less than or equal to 10 μm and with a refractive index close enough to that of the liquid cosmetic preparation so that bioactive glass particles are substantially invisible to an observer.
摘要:
The dental filling material for a permanent dental filling contains up to 87 percent by weight of a mixture of bioactive glass particles capable of forming a hydroxylapatite layer and conventional non-bioactive dental glass particles surrounded or embedded in a matrix material. The glass particles have an average particle size (d50) less than 50 μm. When the index of refraction of the glass particles at least approximately matches the index of refraction of the matrix material a particularly attractive appearance results when the resulting filling material is used to make a dental filling. When the bioactive glass particles contain fluoride, protection against further caries is provided. The invention also includes a method of making the dental filling material, the dental filling made with it and a binder for binding the dental filling to a tooth.
摘要:
A glass powder or a glass-ceramic powder is provided that includes multicomponent glasses with at least three elements, where the glass powder or a glass-ceramic powder has a mean particle size of less than 1 μm. In some embodiments, the mean particle size is less than 0.1 μm, while in other embodiments the mean particle size is less than 10 nm.
摘要:
The invention relates to a use of glass compositions having an antimicrobial and/or disinfectant effect in materials used for restoring teeth, excluding implants.
摘要:
The invention relates to a use of glass compositions having an antimicrobial and/or disinfectant effect in materials used for restoring teeth, excluding implants.
摘要:
A glass powder or a glass-ceramic powder is provided that includes multicomponent glasses with at least three elements, where the glass powder or a glass-ceramic powder has a mean particle size of less than 1 μm. In some embodiments, the mean particle size is less than 0.1 μm, while in other embodiments the mean particle size is less than 10 nm.
摘要:
The invention relates to a barium-free, X-ray-opaque dental glass, to a dental glass/polymer composite comprising the glass, and to the use thereof as dental filling, where the dental glass has the following composition (in % by weight): SiO2 20-45, Al2O3 5-35, B2O3 1-10, Na2O 1-10, K2O 0-8, Cs2O 0-8, sum all alkali metal oxides 1-15, CaO 0-8, SrO 0-27, ZnO 2-20, ZrO2 2-10, P2O5 0-10, La2O3 0-10, F 2-20, the total content of B2O3, ZnO, ZrO2 and La2O3 is >20% by weight, and the refractive index nd of the dental glass is in the range from 1.47 to 1.70.
摘要翻译:本发明涉及一种不含钡的X射线不透明牙科玻璃,涉及包含玻璃的牙科玻璃/聚合物复合材料及其作为牙科填充物的用途,其中牙科玻璃具有以下组成(重量% ):SiO 2 20-45,Al 2 O 3 5-35,B 2 O 3 1-10,Na 2 O 1-10,K 2 O 8,Cs 2 O 8,总和碱金属氧化物1-15,CaO 0-8,SrO 0-27 ,ZnO 2-20,ZrO 2 2-10,P 2 O 5 0-10,La 2 O 3 0-10,F 2-20,B 2 O 3,ZnO,ZrO 2和La 2 O 3的总含量为> 20重量%,折射率nd为 牙科玻璃的范围为1.47至1.70。
摘要:
The invention relates to a glass powder, where at least one oxidizing agent or one reducing agent is added to the glass powder. The glass powder is preferably used as dental glass powder.