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Methods for making dental crowns, bridges, inlays, onlays, veneers, fillings, and other restorations are provided. The methods involve using a two-phase light curing (TPLC) material. Preferably, the TPLC material used to form the dental restoration comprises a blend of polymerizable compounds; photo

Methods for making dental crowns, bridges, inlays, onlays, veneers, fillings, and other restorations are provided. The methods involve using a two-phase light curing (TPLC) material. Preferably, the TPLC material used to form the dental restoration comprises a blend of polymerizable compounds; photopolymerization systems (a) and (b), and particulate filler materials (a) and (b). In a first light-curing step, curing light having a wavelength of greater than 420 nm is used to activate system (a). In a second light-curing step, curing light having a wavelength of less than 420 nm is used to activate system (b). The two step light-curing method is efficient and allows the dentist to make restorations having high mechanical strength and pleasing aesthetics.

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1. A method of making a dental restoration, comprising the steps of: a) providing a two-phase light-curing composition, the composition comprising: (i) about 10 to about 60% by weight of polymerizable compound based on the composition,(ii) about 0.005 to about 0.5% by weight of photopolymerization s

1. A method of making a dental restoration, comprising the steps of: a) providing a two-phase light-curing composition, the composition comprising: (i) about 10 to about 60% by weight of polymerizable compound based on the composition,(ii) about 0.005 to about 0.5% by weight of photopolymerization system (a) based on the polymerizable compound, the photopolymerization system (a) containing a photoinitiator having a light absorbency maximum wavelength of greater than 420 nm,(iii) about 0.05 to about 0.5% by weight of photopolymerization system (b) based on the polymerizable compound, the photopolymerization system (b) containing a photoinitiator having a light absorbency maximum wavelength of less than 420 nm,(iv) about 30 to about 90% by weight of structural filler based on the composition, the structural filler has an average particle size in the range of about 0.35 to about 0.95 μm; and(v) about 1 to about 30% by weight of nanofiller based on the weight of the composition, the nanofiller has an average particle size in the range of about 0.02 to about 0.04 μm;b) dispensing the two-phase light-curing composition into a substantially transparent plastic matrix;c) placing the plastic matrix in a mouth of a patient so that the composition is molded over the tooth surface;d) irradiating the composition with light having a wavelength of greater than 420 nm to activate photopolymerization system (a) so that the composition partially-cures to form a restoration;e) removing the hardened restoration from the surface of the tooth; andf) irradiating the composition with light having a wavelength of less than 420 nm to activate photopolymerization system (b) so that the composition fully cures; andwherein photopolymerization system (a) comprises camphorquinone, ethyl 4-(dimethylamino)benzoate and butylated hydroxytoluene; and photopolymerization system (b) comprises 2,4,6-trimethylbenzoyl-diphenyl-phosphine oxide. 2. The method of claim 1, wherein the polymerizable compound is selected from the group consisting of acrylate, methacrylates, and mixtures thereof. 3. The method of claim 1, wherein the composition comprises polymerizable compounds selected from the group consisting of ethoxylated bisphenol A-dimethacrylates, tri(ethylene glycol)dimethacrylate, and pentaerythritol triacrylate, and mixtures thereof. 4. The method of claim 1, wherein the structural filler is fluoride barium boron aluminosilicate glass particles and the nanofiller is fumed silica particles. 5. The method of claim 1, wherein the structural filler is a blend of fluoride barium boron aluminosilicate glass particles and strontium glass particles and the nanofiller is fumed silica particles. 6. The method of claim 1, wherein the structural filler and nonfillers are surface-treated with silane compounds. 7. The method of claim 1, wherein the nanofiller is a filler system having colloidal silica particles dispersed within a methacrylate or acrylate resin. 8. The method of claim 1, wherein the dental restoration is selected from the group consisting of crowns, bridges, inlays, onlays, veneers, and fillings. 9. The method of claim 1, wherein the nanofiller is a filler system having colloidal silica particles dispersed within a methacrylate or acrylate resin. 10. The method of claim 1, further comprising the steps of finishing and polishing the restoration and permanently affixing the restoration to the tooth using permanent dental cement. 11. The method of claim 1, wherein the photopolymerization system (a) is present in an amount of about 0.01 to about 0.025 by wt % of the polymerizable compound and the photopolymerization system (b) is present in an amount of about 0.05 to about 0.025 by wt % of the polymerizable compound. 12. The method of claim 11, wherein: (i) the composition comprises polymerizable compounds selected from the group consisting of ethoxylated bisphenol A-dimethacrylates, tri(ethylene glycol)dimethacrylate, and pentaerythritol triacrylate, and mixtures thereof; and(ii) the structural filler is a blend of fluoride barium boron aluminosilicate glass particles and strontium glass particles and the nanofiller is fumed silica particles. 13. The method of claim 1, wherein the composition comprises polymerizable compounds including Bis-GMA and ethoxylated bisphenol A-dimethacrylate. 14. The method of claim 1, wherein the composition comprises polymerizable compounds including ethoxylated bisphenol A-dimethacrylate and urethane dimethacrylate. 15. The method of claim 1, wherein the composition comprises polymerizable compounds including ethoxylated bisphenol A-dimethacrylate and trimethylolpropane triacrylate. 16. The method of claim 1, wherein the composition comprises polymerizable compounds including urethane dimethacrylate and trimethylolpropane triacrylate. 17. The method of claim 1, wherein the composition comprises polymerizable compounds including Bis-GMA, ethoxylated bisphenol A-dimethacrylate, urethane dimethacrylate, and trimethylolpropane triacrylate.