| 摘要 |
PROBLEM TO BE SOLVED: To provide an artificial tooth made of resin having an undercut. SOLUTION: This artificial tooth has an undercut molded using a die having an undercut for the direction of pulling. In this case, an organism restoration material which is changed into a rubber elastic body having shear elastic modulus of 1.0×101 Pa to 9.99109 Pa and rubber hardness of 1 to 90 from a plastic body with gas and whose Knoop hardness can be changed to 10 or more after polymerization is used in at least a part which becomes un undercut. The organism restoration material contains 10.0 to 37.5 wt.% of polymerizable monomer, 14.5 to 62.5 wt.% of polymer like powder particle body whose at least surface is swelled by the polymerizable monomer, 10.0 to 60.0 wt.% of silane treated silica uniformly diffusing urethane (meta)acrylate, and polymerization initiator. The organism restoration material is filled into a die having an undercut, is removed from the die after elastic characteristic appears, and is polymerized and hardened.
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