Special resin material for dentistry, suitable for 3D printing high-precision dental models. Smooth model surface, good model texture, high detail reproduction, high molding accuracy; low shrinkage (<0.5%), good dimensional stability; high surface hardness (>80D); good scratch resistance after post-curing treatment; good strength and toughness, can resist certain impact; high dimensional stability, small deformation for long-term preservation (within 7 days), ensure repeated extraction accuracy.