Title:
DENTAL BULK BLOCK TO BE CUT AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/250183
Kind Code:
A1
Abstract:
Disclosed is a dental bulk block to be cut, the block being a glass ceramic block including a crystalline phase in an amorphous glass matrix, wherein the crystalline phase has a main crystalline phase of lithium disilicate, does not have an additional crystalline phase, has an average particle size of 0.01 ㎛ to 1.0 ㎛, and has a crystallinity of 25% to 45%. Therefore, in a state in which the present invention is a high-strength workpiece having high flexural strength, machinability during cutting processing such as CAD/CAM can be improved, and thus tool resistance and wear rate can be reduced and tool lifespan can be increased, the chipping of an edge portion during machining can be reduced, and dental restorations having different transparencies can be manufactured from the block through simple processes such as mechanical processing of the block and changing of a post heat treatment condition, and thus various shades can be implemented to enable contributions to the simplification of distribution management.
Inventors:
LIM HYUNG BONG (KR)
KIM YONG SU (KR)
KIM YONG SU (KR)
Application Number:
PCT/KR2021/006673
Publication Date:
December 01, 2022
Filing Date:
May 28, 2021
Export Citation:
Assignee:
HASS CO LTD (KR)
International Classes:
A61C13/00; A61C13/083; A61K6/802; A61K6/853; A61L27/10; C04B35/01; C04B35/14; C04B35/64; C04B35/653
Foreign References:
| KR20180102711A | 2018-09-18 | |||
| EP2788297B1 | 2019-11-06 | |||
| KR20150119256A | 2015-10-23 | |||
| KR20160105826A | 2016-09-07 | |||
| US20200069399A1 | 2020-03-05 | |||
| KR20160048990A | 2016-05-04 | |||
| KR101975548B1 | 2019-05-08 |
Attorney, Agent or Firm:
HAEDAM IP GROUP (KR)
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