Title:
歯科用ミルブランクおよびその製造方法
Document Type and Number:
Japanese Patent JP7077329
Kind Code:
B2
Abstract:
The present invention provides a dental mill blank having reduced cracks and that excels in mechanical strength and aesthetic quality. The present invention relates to a dental mill blank comprising an inorganic filler and a polymer, and having a porosity of 25 to 35 volume% after 2-hour ashing at 600°C. In the dental mill blank, the inorganic filler preferably comprises an inorganic filler (A) and an inorganic filler (B), and the dental mill blank preferably satisfies the following formulae (I) and (II),0.12≤a≤0.703≤b/awhere a is an average primary particle diameter of the inorganic filler (A) in micrometers, and b is an average primary particle diameter of the inorganic filler (B) in micrometers. Preferably, the inorganic filler (A) and the inorganic filler (B) have a volume-to-volume content ratio (A)/(B) of 5/95 to 50/50.
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Inventors:
Masashi Inoue
Makoto Ikeda
Hiroshige Ishino
Makoto Ikeda
Hiroshige Ishino
Application Number:
JP2019545587A
Publication Date:
May 30, 2022
Filing Date:
September 26, 2018
Export Citation:
Assignee:
Kuraray Noritake Dental Co., Ltd.
International Classes:
A61C13/00; A61C5/77; A61C8/00; A61C13/083; A61C13/087
Domestic Patent References:
| JP2005514305A | ||||
| JP2017109036A |
Foreign References:
| WO2017154850A1 | ||||
| US20170216000 |
Attorney, Agent or Firm:
Koichi Kamata
Yasuaki Tamura
Yasuaki Tamura