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Zirconium oxide laminate
Provided is a laminate which is capable of impressing an impression close to a natural tooth, which has light-transmitting properties and a gradual change in color tone, and which is capable of suppressing cracking of a surface layer (a layer on the side of an incisor end of a denture). This laminate has a surface layer comprising zirconia containing a stabilizing element, and a composition gradient layer comprising two or more unit layers each comprising zirconia containing a stabilizing element and a coloring element, the unit layers are laminated so that the content of the stabilizing element in the stabilizing element-containing zirconium oxide contained in the compositionally gradient layer does not vary or decrease from the surface layer side toward the surface side of the laminate on the opposite side from the surface layer, thereby constituting a compositionally gradient layer; the stabilizing element content of the stabilizing element-containing zirconium oxide contained in the surface layer is less than the stabilizing element content of the stabilizing element-containing zirconium oxide contained in the first compositional gradient layer. The first composition gradient layer is a unit layer adjacent to the surface layer among the unit layers constituting the composition gradient layer.
本发明提供一种能够带来接近天然牙的印象的、具有透光性和色调的渐变且能够抑制表面层(假牙切端部一侧的层)的崩裂的层叠体。本发明的层叠体具有表面层和组成梯度层，所述表面层包含含有稳定化元素的氧化锆，所述组成梯度层由2个以上的单元层构成，所述单元层分别包含含有稳定化元素的氧化锆和着色元素，以所述组成梯度层中包含的所述含有稳定化元素的氧化锆的所述稳定化元素的含量从所述表面层侧向层叠体的与所述表面层相反侧的表面侧不变动或减少的方式层叠各单元层，由此构成组成梯度层；所述表面层中包含的所述含有稳定化元素的氧化锆的稳定化元素的含量小于第一组成梯度层中包含的所述含有稳定化元素的氧化锆的稳定化元素的含量，所述第一组成梯度层为构成所述组成梯度层的各单元层内的与所述表面层邻接的单元层。
Zirconium oxide laminate
Provided is a laminate which is capable of impressing an impression close to a natural tooth, which has light-transmitting properties and a gradual change in color tone, and which is capable of suppressing cracking of a surface layer (a layer on the side of an incisor end of a denture). This laminate has a surface layer comprising zirconia containing a stabilizing element, and a composition gradient layer comprising two or more unit layers each comprising zirconia containing a stabilizing element and a coloring element, the unit layers are laminated so that the content of the stabilizing element in the stabilizing element-containing zirconium oxide contained in the compositionally gradient layer does not vary or decrease from the surface layer side toward the surface side of the laminate on the opposite side from the surface layer, thereby constituting a compositionally gradient layer; the stabilizing element content of the stabilizing element-containing zirconium oxide contained in the surface layer is less than the stabilizing element content of the stabilizing element-containing zirconium oxide contained in the first compositional gradient layer. The first composition gradient layer is a unit layer adjacent to the surface layer among the unit layers constituting the composition gradient layer.
本发明提供一种能够带来接近天然牙的印象的、具有透光性和色调的渐变且能够抑制表面层(假牙切端部一侧的层)的崩裂的层叠体。本发明的层叠体具有表面层和组成梯度层，所述表面层包含含有稳定化元素的氧化锆，所述组成梯度层由2个以上的单元层构成，所述单元层分别包含含有稳定化元素的氧化锆和着色元素，以所述组成梯度层中包含的所述含有稳定化元素的氧化锆的所述稳定化元素的含量从所述表面层侧向层叠体的与所述表面层相反侧的表面侧不变动或减少的方式层叠各单元层，由此构成组成梯度层；所述表面层中包含的所述含有稳定化元素的氧化锆的稳定化元素的含量小于第一组成梯度层中包含的所述含有稳定化元素的氧化锆的稳定化元素的含量，所述第一组成梯度层为构成所述组成梯度层的各单元层内的与所述表面层邻接的单元层。
Zirconium oxide laminate
氧化锆层叠体
USHIO YUKI (author) / AZECHI SHO (author) / ITO AKIKO (author) / NAGAYAMA HITOSHI (author)
2024-09-27
Patent
Electronic Resource
Chinese
| European Patent Office | 2024