DENTAL INVESTING MATERIAL AND METHOD OF PREPARING DENTAL MOLD

申请公布号：EP1323405(B1)

申请号：EP20010963577

申请日期：2001.09.10

申请公布日期：2007.08.08

申请人：

NORITAKE CO., LIMITED

发明人：KATO, DAISUKE;MATSUMOTO, ATSUSHI

分类号：A61K6/00;A61C13/20;A61K6/027;A61K6/06;B22C1/00;B22C1/08;B22C7/02;B22C9/04

主分类号：A61K6/00

摘要：<p>The present invention is a dental investment material 50 comprising hemihydrate gypsum and a refractory material as a main component mixed with a calcium carbonate. The invention is also a method for producing a dental investment mold comprising a step for installing, in a frame 2, a wax pattern 3 consisting of a tooth pattern section- 31 having a desired tooth form and a support section 32 which supports the tooth pattern section, a step for casting a dental investment material 50 having a composition described above into the frame while allowing one end of the support section to be intact without embedding but embedding the remainder of the wax pattern 3 in the dental investment material 50 and a step for sintering the dental investment material 50 to evaporate the wax pattern 3 whereby forming a dental investment mold 5 having a cavity 51 which has the desired tooth form.</p>

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