PRODUCTION METHOD OF DENTAL CERAMICS MATERIAL

Abstract

To make a color tone similar to that of dentin of a tooth at a low cost without discoloration when baking, a dental ceramics material is produced by: mixing a pink coloring agent and a yellow coloring agent with zirconium oxide containing a stabilizer while having a mixing ratio of 0.001 to 5 wt. % respectively; and baking it, where the pink coloring agent is obtained by dissolving manganese oxide in aluminum oxide as a solid solution, the yellow coloring agent is obtained by dissolving vanadium oxide in zirconium oxide as a solid solution, the zirconium oxide contains 0.1 to 30 wt. % aluminum oxide if necessary, the stabilizer is one or more kinds selected from a group including yttrium oxide, magnesium oxide, calcium oxide, and cerium oxide, and the content thereof is preferably 3 to 7 wt. %.

Description

Claims

1. A production method of a dental ceramics material, the method comprising: mixing a pink coloring agent and a yellow coloring agent at a mixing ratio of 0.001 to 5 wt. % respectively with zirconium oxide containing a stabilizer, where the pink coloring agent is obtained by dissolving manganese oxide in aluminum oxide as a solid solution, and the yellow coloring agent is obtained by dissolving vanadium oxide in zirconium oxide as a solid solution; andbaking it so as to produce a dental ceramics material.

2. The production method of a dental ceramics material as claimed in claim 1, wherein the zirconium oxide containing the stabilizer contains aluminum oxide, and the content of the aluminum oxide is 0.1 to 30 wt. %.

3. The production method of a dental ceramics material as claimed in claim 1, wherein the stabilizer is one or more kinds selected from a group consisting yttrium oxide, magnesium oxide, calcium oxide, and cerium oxide, and the content thereof is preferably 3 to 7 wt. %.

4. The production method of a dental ceramics material as claimed in claim 2, wherein the stabilizer is one or more kinds selected from a group consisting yttrium oxide, magnesium oxide, calcium oxide, and cerium oxide, and the content thereof is preferably 3 to 7 wt. %.