The trial visible light-curing relining resin, suitable for use when denture does not fit, and suitable also for marginal molding, is considered necessary to prepare a number of different types according to different occasions.
So, the author changed the biscosity of the relining material in three different stages of low, medium and highdegrees of biscosity, and using these samples, made test objects by means of light-curing polymerization. When the transverse strength, deflection, modulus of elasticity, rockwell hardness, waterworption and solubility of physical properties test objects were examined and the following conclusions were obtained:
1. Transverse strengh: 730-775kg/cm2
Deflection:(5.0kg) 2.0-2.2mm
(3.5kg) 1.0 mm
Elasticity: about 3.0-104kg/cm2
2. Rockwell hardness: 64.8-69.1 (HRS)
3. Watersorption: 20-23μg/mm3
4. Solubility: 1.8-2.8μg/mm3
When the above-mentioned three points have been put together, it has been suggested that, since the physical properties of Type I, II and Type III after polymerization hardly deffered, their clinical application is feasible and theat, since their biscosity befor curing deffers, their clinical effects will be better than the conventional types of resin.