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ZIRCONIA SINTERED BODY CONTAINING FLUORESCENT AGENT
The present invention provides a zirconia sintered body containing a fluorescent agent and having excellent translucency and excellent strength. The present invention also provides a zirconia shaped body and a zirconia calcined body from which the zirconia sintered body can be obtained. The present invention relates to a zirconia sintered body comprising a fluorescent agent, wherein the zirconia sintered body comprises 4.5 to 9.0 mol% yttria, and has a crystal grain size of 180 nm or less, and a three-point flexural strength of 500 MPa or more. The present invention relates to a zirconia shaped body comprising a fluorescent agent, wherein the zirconia shaped body comprises 4.5 to 9.0 mol% yttria, and has a three-point flexural strength of 500 MPa or more after being sintered at 1,100°C for 2 hours under ordinary pressure, and a crystal grain size of 180 nm or less after being sintered at 1,100°C for 2 hours under ordinary pressure. The present invention relates to a zirconia calcined body comprising a fluorescent agent, wherein the zirconia calcined body comprises 4.5 to 9.0 mol% yttria, and has a three-point flexural strength of 500 MPa or more after being sintered at 1,100°C for 2 hours under ordinary pressure, and a crystal grain size of 180 nm or less after being sintered at 1,100°C for 2 hours under ordinary pressure.
ZIRCONIA SINTERED BODY CONTAINING FLUORESCENT AGENT
The present invention provides a zirconia sintered body containing a fluorescent agent and having excellent translucency and excellent strength. The present invention also provides a zirconia shaped body and a zirconia calcined body from which the zirconia sintered body can be obtained. The present invention relates to a zirconia sintered body comprising a fluorescent agent, wherein the zirconia sintered body comprises 4.5 to 9.0 mol% yttria, and has a crystal grain size of 180 nm or less, and a three-point flexural strength of 500 MPa or more. The present invention relates to a zirconia shaped body comprising a fluorescent agent, wherein the zirconia shaped body comprises 4.5 to 9.0 mol% yttria, and has a three-point flexural strength of 500 MPa or more after being sintered at 1,100°C for 2 hours under ordinary pressure, and a crystal grain size of 180 nm or less after being sintered at 1,100°C for 2 hours under ordinary pressure. The present invention relates to a zirconia calcined body comprising a fluorescent agent, wherein the zirconia calcined body comprises 4.5 to 9.0 mol% yttria, and has a three-point flexural strength of 500 MPa or more after being sintered at 1,100°C for 2 hours under ordinary pressure, and a crystal grain size of 180 nm or less after being sintered at 1,100°C for 2 hours under ordinary pressure.
ZIRCONIA SINTERED BODY CONTAINING FLUORESCENT AGENT
ZIRKONIUMOXID-SINTERKÖRPER MIT EINEM FLUORESZIERENDEN MITTEL
CORPS FRITTÉ DE ZIRCONE CONTENANT UN AGENT FLUORESCENT
KUDO YASUTAKA (author) / KATO MAKIKO (author) / OKADA KOICHI (author)
2021-04-14
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
/
A61C
Zahnheilkunde
,
DENTISTRY
/
A61K
Zubereitungen für medizinische, zahnärztliche oder kosmetische Zwecke
,
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
/
B28B
Formgeben von Ton oder anderen keramischen Stoffzusammensetzungen, Schlacke oder von Mischungen, die zementartiges Material enthalten, z.B. Putzmörtel
,
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
/
C01G
Verbindungen der von den Unterklassen C01D oder C01F nicht umfassten Metalle
,
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
ZIRCONIA-CALCINATED BODY CAPABLE OF PRODUCING FLUORESCENT ZIRCONIA-SINTERED BODY
| European Patent Office | 2021
| European Patent Office | 2025