METHOD FOR MANUFACTURING ZIRCONIA BLOCK FOR ARTIFICIAL TEETH HAVING COLOR GRADATIONS

WIPO Patent Application WO/2014/137037

A1

The present invention relates to a method for manufacturing a zirconia block for artificial teeth having color gradations, the method comprising the steps of: preparing colored zirconia-based powder and white zirconia-based powder; mixing the colored zirconia-based powder and the white zirconia-based powder at different mixing ratios so as to obtain desired color gradations, and preparing a plurality of raw materials in which the colored zirconia-based powder and the white zirconia-based powder are mixed with each other at different weight ratios; sequentially injecting the plurality of raw materials into a mold for compression molding or a mold frame in the order of raw materials having a high content of the colored zirconia-based powder or in the order of raw materials having a low content of the colored zirconia-based powder, and molding the injected raw materials; and calcining the molded product. The present invention can implement color gradations of natural teeth in a zirconia block so as to show aesthetics of the natural tooth even without using porcelain powder or a liquid set in a liquid state.

PARK TAE-SEOK (KR)
CHUN IN-KON (KR)

PCT/KR2013/006513

September 12, 2014

July 19, 2013

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DMAX CO LTD (KR)

A61C13/20; A61C13/083; A61L27/10

KR100876059B1	2008-12-26
KR20110121379A	2011-11-07
KR100650409B1	2006-11-27
JPH08119834A	1996-05-14
US20120196244A1	2012-08-02
US20080085828A1	2008-04-10

See also references of EP 2965713A4
None

KO, Kil-Su (KR)
고길수 (KR)

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