Method for manufacturing ceramic sintered body
US11357605B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2017 |
| Grant date | Jun 14, 2022 |
| Priority date | — |
| Expiry date | Dec 18, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/38
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A ceramic body for dental prosthesis can suppress a variation in quality in the sole ceramic body for dental prosthesis due to expansion of its diameter. The ceramic body for dental prosthesis is made of a ceramic material, is shaped to have a circular planar shape and a disk-like external shape, and has a diameter of 50 mm or more. The method for manufacturing this ceramic body for dental prosthesis includes: preparing a ceramic material; shaping the ceramic material by press shaping or by a machine tool; temporarily sintering the ceramic material at a temperature from a sintering temperature that provides theoretical density −700° C. or more to the sintering temperature −100° C. or less; and shaping the ceramic material to have a circular planar shape and a disk-like external shape so as to prepare the ceramic body for dental prosthesis having a diameter of 50 mm or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.