| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an artificial enamel having properties similar to those of an enamel covering the surface layer of a human tooth, and usable even for dental standard specimens used for research with the object of improving a dental cure technique and pursuing aesthetic properties. <P>SOLUTION: The invention is composed of a hydroxyapatite sintered compact obtained by sintering raw material powder including hydroxyapatite powder by a discharge plasma sintering process, and its crystallization degree by an X-ray process is 35 to 90%. <P>COPYRIGHT: (C)2007,JPO&INPIT |
