| 摘要 |
Photo-curable compositions for artificial teeth and denture base and a method for manufacturing denture by a three-dimensional printing system are provided. The compositions include photo-curable organic compounds, surface modified nano-sized inorganic filler, photo-initiator, colorant, and stabilizer. The composition is in a viscous liquid state having 1,000-5,200 cps at room temperature and has a low viscosity of 50-500 cps at 70° C. The composition also has an excellent curing rate for three-dimensional printing. Using the compositions, denture having a distinctive denture base and a set of artificial teeth can be manufactured via an inkjet type or digital light process type three-dimensional printing according to Computer Aided Design (CAD) data. |
| 主权项 |
1. A composition comprising:
about 50 to about 75 weight % of at least one kind of ethoxylated difunctional bisphenol A dimethacrylate; about 5 to about 15 weight % of at least one kind of multifunctional methacrylate having two or more methacryloxy groups; about 15 to about 35 weight % of at least one kind of urethane dimethacrylate; about 5 to about 35 weight % of at least one kind of silica-based fine particles having-methacrylate functionalization layers and having an average particle size of less than about 200 nm; about 0.2 to about 5.0 weight % of at least one kind of ultraviolet/visible (UV/Vis) light-photo-polymerization initiator; at least one colorant; and at least one stabilizer, wherein viscosity of a liquid state mixture, including the at least one kind of ethoxylated difunctional bisphenol A dimethacrylate, the at least one kind of multifunctional methacrylate, the at least one kind of urethane dimethacrylate, the at least one kind of silica-based fine particles, the at least one kind of UV/Vis light-photo-polymerization initiator, the at least one colorant, and the at least one stabilizer, is from 1000-5,200 centipoise (cps) at room temperature or 25° C. and from 50 to 500 cps at 70° C., and wherein the viscosity is adjusted by controlling a ratio of the at least one kind of ethoxylated difunctional bisphenol A dimethacrylate, the at least one kind of multifunctional methacrylate, the at least one kind of urethane dimethacrylate, the at least one kind of silica-based fine particles, the at least one kind of UV/Vis light-photo-polymerization initiator, the at least one colorant, and the at least one stabilizer in the mixture. |
