Photo-curable resin compositions and method of using the same in three-dimensional printing for manufacturing artificial teeth and denture base

A composition comprising:

• a light-curable mixture comprising:
• 0-25% by weight of a poly(methyl methacrylate)/methyl methacrylate;
• 5-15% by weight of at least one kind of multifunctional aliphatic (meth)acrylate;
• 5-35% by weight of at least one kind of aliphatic urethane (meth)acrylate oligomer;
• 30-60% by weight of at least one kind of difunctional bisphenol-A methacrylate;
• 0.1 to 3.5% by weight of at least one kind of a photoinitiator;
• 0.05 to 1% by weight of at least one kind of light stabilizer;
• and
• 0.1 to 2% by weight of color pigment based on the total weight of the composition,
• wherein viscosity of the composition is less than about 700 centipoise (cps) at 70° C. such that the composition is used in a three-dimensional printer,
• wherein flexural strength of specimens printed by the three-dimensional printer using the composition and post cured by a curing machine is greater than 50 MPa,
• wherein molecular weight of the poly(methyl methacrylate) is between about 10,000 to about 400,000 g/mol, and
• wherein the composition is used for manufacturing artificial teeth and dentures using the three-dimensional printer.

A composition comprising:

• a light-curable mixture comprising:
• 0-50% by weight of a poly(methyl methacrylate)/methyl methacrylate;
• 5-20% by weight of at least one kind of multifunctional aliphatic (meth)acrylate;
• 5-40% by weight of at least one kind of aliphatic urethane (meth)acrylate oligomer;
• 25-65% by weight of at least one kind of difunctional bisphenol-A methacrylate;
• 0.1 to 5% by weight of at least one kind of a photoinitiator;
• 0.05 to 2% by weight of at least one kind of light stabilizer;
• and
• 0.1 to 3% by weight of color pigment based on the total weight of the composition,
• wherein viscosity of the composition is less than about 700 centipoise (cps) at 70° C. such that the composition is used in a three-dimensional printer,
• wherein flexural strength of specimens printed by the three-dimensional printer using the composition and post cured by a curing machine is greater than 50 MPa,
• wherein molecular weight of the poly(methyl methacrylate) is between about 10,000 to about 400,000 g/mol, and
• wherein the viscosity of the composition is greater than about 100 centipoise (cps) at 70° C.