| 摘要 |
<p>PURPOSE:To provide a sprue form for preparing a die which can cast a dental prosthesis of high quality involving less casting defects. CONSTITUTION:A sprue form used to produce a die for casting a dental prosthesis is provided, wherein a sprue 2 formed from a hot melting material is implanted in a pattern 1 to serve as a die for dental binding prepared from hot melting material, and a heat radiating tool 3 made of hot melting material is installed on the sprue 2. The sprue 2 is diverged into two or more fragments, and thereto the heat radiating tool 3 is fixed.</p> |
