Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Zirconium oxide presintered body and sintered body
Provided are: a sintered body which has light transmittance and a gradual change in color tone and which is capable of impressing an impression close to natural teeth when viewed; and a pre-sintered body which forms the sintered body. Even when subjected to a heat treatment such as sintering and pre-sintering, at least one of the zirconia pre-sintered body and the sintered body does not exhibit undesirable impressions, and the like, does not exhibit undesirable impressions, and does not exhibit undesirable impressions, even if subjected to a heat treatment such as sintering and pre-sintering. Warping can also be suppressed. This zirconia sintered body contains (i) a zirconia containing a stabilizing element, or (ii) a zirconia containing a zirconia containing a stabilizing element and a coloring element. The sintered body has three or more regions stacked in layers, and the content of at least one of a stabilizing element and a coloring element in two adjacent regions among the regions is different from each other; in the laminated regions, the difference between the content of the stabilizing element contained in the first region located at one end and the content of the stabilizing element contained in the second region located at the other end is 2.0 mol% or less.
本发明提供一种在目视辨认的情况下能够带来接近自然牙的印象的、具有透光性以及色调的渐变的烧结体以及形成这种烧结体的预烧结体，所述氧化锆的预烧结体和烧结体中的至少任一种即使实施了烧结、预烧这样的热处理，也能够抑制翘曲。本发明的氧化锆的烧结体中，所述氧化锆含有(i)含稳定化元素的氧化锆，或含有(ii)含有含稳定化元素的氧化锆和着色元素的氧化锆。所述烧结体具有层叠为层状的3个以上的区域，在所述区域中的邻接的2个区域中，稳定化元素和着色元素中的至少任一者的含量互不相同；层叠的上述区域中，位于一端的第一区域中包含的稳定化元素的含量与位于另一端的第二区域中包含的稳定化元素的含量之差为2.0mol％以下。
Zirconium oxide presintered body and sintered body
Provided are: a sintered body which has light transmittance and a gradual change in color tone and which is capable of impressing an impression close to natural teeth when viewed; and a pre-sintered body which forms the sintered body. Even when subjected to a heat treatment such as sintering and pre-sintering, at least one of the zirconia pre-sintered body and the sintered body does not exhibit undesirable impressions, and the like, does not exhibit undesirable impressions, and does not exhibit undesirable impressions, even if subjected to a heat treatment such as sintering and pre-sintering. Warping can also be suppressed. This zirconia sintered body contains (i) a zirconia containing a stabilizing element, or (ii) a zirconia containing a zirconia containing a stabilizing element and a coloring element. The sintered body has three or more regions stacked in layers, and the content of at least one of a stabilizing element and a coloring element in two adjacent regions among the regions is different from each other; in the laminated regions, the difference between the content of the stabilizing element contained in the first region located at one end and the content of the stabilizing element contained in the second region located at the other end is 2.0 mol% or less.
本发明提供一种在目视辨认的情况下能够带来接近自然牙的印象的、具有透光性以及色调的渐变的烧结体以及形成这种烧结体的预烧结体，所述氧化锆的预烧结体和烧结体中的至少任一种即使实施了烧结、预烧这样的热处理，也能够抑制翘曲。本发明的氧化锆的烧结体中，所述氧化锆含有(i)含稳定化元素的氧化锆，或含有(ii)含有含稳定化元素的氧化锆和着色元素的氧化锆。所述烧结体具有层叠为层状的3个以上的区域，在所述区域中的邻接的2个区域中，稳定化元素和着色元素中的至少任一者的含量互不相同；层叠的上述区域中，位于一端的第一区域中包含的稳定化元素的含量与位于另一端的第二区域中包含的稳定化元素的含量之差为2.0mol％以下。
Zirconium oxide presintered body and sintered body
氧化锆的预烧结体和烧结体
USHIO YUKI (Autor:in) / AZECHI SHO (Autor:in) / NAGAYAMA HITOSHI (Autor:in)
01.10.2024
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2024
Dental alumina presintered body for forming highly translucent alumina sintered body
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2023