• Patent Title: DENTAL ZIRCONIA BLANK HAVING HIGH RELATIVE DENSITY
  • Application No.: US15805396
    Application Date: 2017-11-07
  • Publication No.: US20180125616A1
    Publication Date: 2018-05-10
  • Inventor: Toshio KITAMURARieko AIBA
  • Applicant: SHOFU INC.
  • Applicant Address: JP Kyoto
  • Assignee: SHOFU INC.
  • Current Assignee: SHOFU INC.
  • Current Assignee Address: JP Kyoto
  • Priority: JP2016-217662 20161107; JP2017-209868 20171031
  • Main IPC: A61C13/00
  • IPC: A61C13/00 A61C13/08
DENTAL ZIRCONIA BLANK HAVING HIGH RELATIVE DENSITY
Abstract:
The present disclosure relates to a dental cutting zirconia blank having high relative density for preparing a dental restoration. More specifically, the present disclosure relates to a dental cutting zirconia blank which consists of a zirconia ceramics used for the cutting with the CAD/CAM system in the dental field, a semi-sinter zirconia blank (pre-sintered body) of which has high relative density, and which can provide a prosthesis device having high aesthetics after sintering. There is provided a dental cutting zirconia blank wherein the dental cutting zirconia blank has at least one layer consisting of zirconia powder containing 4 to 15 mol % of yttria or erbium oxide as a stabilizer, a relationship among pre-sintering density, final-sintering density and relative density satisfies the following relation: 54≤Relative density (%)={(Pre-sintering density)/(Perfect-sintering density)}×100≤70
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