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Title:
DENTAL MILL BLANK AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2019/131756
Kind Code:
A1
Abstract:
The present invention provides a dental mill blank exhibiting superior resistance against wear in opposing teeth. The present invention pertains to a dental mill blank comprising a polymer and an inorganic filler that contains an inorganic filler (A) and an inorganic filler (B), a portion of the inorganic filler (A) forming an aggregate, wherein the following formulas (I) to (III) are satisfied when the average primary particle size of the inorganic filler (A) is a μm, the average primary particle size of the inorganic filler (B) is b μm, and the average particle size of the aggregate is x μm. It is preferable for the dental mill blank to comprise an island component that contains the aggregate and to comprise a sea component that contains the inorganic filler (A) and the inorganic filler (B). (I) 0.001 ≤ a < 0.32 (II) 0.3 ≤ b ≤ 10 (III) 5 ≤ x ≤ 80

Inventors:
INOUE Masashi (2-28 Kurashiki-cho, Tainai-sh, Niigata 53, 〒9592653, JP)
HATANAKA Kenji (2-28 Kurashiki-cho, Tainai-sh, Niigata 53, 〒9592653, JP)
Application Number:
JP2018/047832
Publication Date:
July 04, 2019
Filing Date:
December 26, 2018
Export Citation:
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Assignee:
KURARAY NORITAKE DENTAL INC. (1621, Sakazu Kurashiki-sh, Okayama 01, 〒7100801, JP)
International Classes:
A61C13/083; A61C5/70
Domestic Patent References:
WO2017154850A12017-09-14
WO2012042911A12012-04-05
WO2014021343A12014-02-06
Foreign References:
JP2017109036A2017-06-22
JP2017014111A2017-01-19
Attorney, Agent or Firm:
KAMADA Koichi et al. (8th Fl, UMEDA PLAZA BLDG. ANNEX 4-3-25, Nishitenma, Kita-ku, Osaka-sh, Osaka 47, 〒5300047, JP)
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