Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
DENTAL ZIRCONIA BLANK HAVING MULTILAYER STRUCTURE DIFFERENT IN CONTENT OF YTTRIA
To provide a dental zirconia blank which has high permeability, can reproduce a color tone close to a natural tooth and a strength to be able to tolerate in oral cavity. Furthermore, to provide a dental zirconia blank from which a prosthesis device of 4 or more units having high strength can be prepared. To provide a dental zirconia blank having a plurality of layers, comprising; a first layer consisting of a high permeability ceramic containing 91.6 to 96.5 mol% of zirconium oxide and 3.5 to 8.4 mol% of yttrium oxide, and a second layer consisting of a low permeability ceramic containing 95.6 to 98.5 mol% of zirconium oxide and 1.5 to 4.4 mol% of yttrium oxide, wherein a content rate of yttrium oxide in the low permeability ceramic is lower than a content rate of yttrium oxide in the high permeability ceramic by 0.5 to 5.4 mol%, and the first layer is positioned at one end of the plurality of layers in a layering direction.
DENTAL ZIRCONIA BLANK HAVING MULTILAYER STRUCTURE DIFFERENT IN CONTENT OF YTTRIA
To provide a dental zirconia blank which has high permeability, can reproduce a color tone close to a natural tooth and a strength to be able to tolerate in oral cavity. Furthermore, to provide a dental zirconia blank from which a prosthesis device of 4 or more units having high strength can be prepared. To provide a dental zirconia blank having a plurality of layers, comprising; a first layer consisting of a high permeability ceramic containing 91.6 to 96.5 mol% of zirconium oxide and 3.5 to 8.4 mol% of yttrium oxide, and a second layer consisting of a low permeability ceramic containing 95.6 to 98.5 mol% of zirconium oxide and 1.5 to 4.4 mol% of yttrium oxide, wherein a content rate of yttrium oxide in the low permeability ceramic is lower than a content rate of yttrium oxide in the high permeability ceramic by 0.5 to 5.4 mol%, and the first layer is positioned at one end of the plurality of layers in a layering direction.
DENTAL ZIRCONIA BLANK HAVING MULTILAYER STRUCTURE DIFFERENT IN CONTENT OF YTTRIA
DENTALER ZIRKONOXIDROHLING MIT EINER MEHRSCHICHTIGEN STRUKTUR MIT UNTERSCHIEDLICHEM YTTRIA-GEHALT
ÉBAUCHE DE ZIRCONE DENTAIRE AYANT UNE STRUCTURE MULTICOUCHE PRÉSENTANT DIFFÉRENTES TENEURS EN OXYDE D' YTTRIUM
AIBA RIEKO (Autor:in) / TAKAHASHI SHUHEI (Autor:in) / KITAMURA TOSHIO (Autor:in)
13.11.2019
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
/
A61C
Zahnheilkunde
,
DENTISTRY
/
A61K
Zubereitungen für medizinische, zahnärztliche oder kosmetische Zwecke
,
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
/
C01G
Verbindungen der von den Unterklassen C01D oder C01F nicht umfassten Metalle
,
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
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