The invention relates to the use of flowable, photopolymerizable composite resin compositions that comprise a nanoscale organic surface-modified filler for stereolithographically producing a shaped dental part and to a method for producing corresponding shaped dental parts. The method according to the invention is particularly simple, fast, reliable and cost-effective. It allows improved shaped dental parts to be produced, in particular improved bridges and crowns.

The invention relates to the use of flowable, photopolymerizable composite resin compositions that comprise a nanoscale organic surface-modified filler for stereolithographically producing a shaped dental part and to a method for producing corresponding shaped dental parts. The method according to the invention is particularly simple, fast, reliable and cost-effective. It allows improved shaped dental parts to be produced, in particular improved bridges and crowns.

A method that includes the step of using a person's fingers to push a dental composition into engagement with a damaged tooth surface of a damaged tooth thereby adhering the dental composition to the damaged tooth surface and covering at least a portion of the damaged tooth surface. The dental composition includes a base material comprising at least one of the following compounds chosen from the group consisting of: a product consisting of one or more hydrocarbon-based waxes that may also include inorganic fillers and/or organic fillers; an uncured, uncrosslinked silicone high consistency rubber base; and a hydrophobic water insoluble solid material. The base material has a coating composition on one or more surface of the base material wherein the coating composition comprises: one or more desensitization ingredient and at least one dry, powdered hydrophilic polymeric substance.

A method that includes the step of using a person's fingers to push a dental composition into engagement with a damaged tooth surface of a damaged tooth thereby adhering the dental composition to the damaged tooth surface and covering at least a portion of the damaged tooth surface. The dental composition includes a base material comprising at least one of the following compounds chosen from the group consisting of: a product consisting of one or more hydrocarbon-based waxes that may also include inorganic fillers and/or organic fillers; an uncured, uncrosslinked silicone high consistency rubber base; and a hydrophobic water insoluble solid material. The base material has a coating composition on one or more surface of the base material wherein the coating composition comprises: one or more desensitization ingredient and at least one dry, powdered hydrophilic polymeric substance.

A dental resin composite comprising a thermally cured composition of polymeric resin monomers and inorganic fillers that comprise at least 80 wt % total filler loading is provided. Mill blocks made from the dental resin composite and produced via free radical polymerization under high-temperature (approximately 160° C. to 220° C.) and high-pressure process (approximately 300 MPa to 560 MPa) exhibited enhanced mechanical strength and good esthetics suitable for use in CAD/CAM indirect restorations such as, inlays, onlays, crowns and bridges.

A dental resin composite comprising a thermally cured composition of polymeric resin monomers and inorganic fillers that comprise at least 80 wt % total filler loading is provided. Mill blocks made from the dental resin composite and produced via free radical polymerization under high-temperature (approximately 160° C. to 220° C.) and high-pressure process (approximately 300 MPa to 560 MPa) exhibited enhanced mechanical strength and good esthetics suitable for use in CAD/CAM indirect restorations such as, inlays, onlays, crowns and bridges.

A composition comprising microcapsules functionalized with polymerizable functional groups on the surface of said microcapsules wherein the functional groups form covalent bonds with monomers in the continuous phase to enhance the mechanical properties of the composition.

[Problem]

To provide a dental photocurable composition which has sufficient mechanical property and whose rheological property is not deactivated even after long-term storage.

[Solution]

The dental photocurable composition of the present disclosure comprises (A) polymerizable monomer, (B) photosensitizer, (D) photopolymerization accelerator and (E) filler, wherein, the dental photocurable composition comprises (D1) aliphatic tertiary amine compound represented by formula (1) as the (D) photopolymerization accelerator, and the dental photocurable composition comprises (E1) hydrophobized silica fine particle having an average diameter of primary particle of 1 to 40 nm as the (E) filler.

##STR00001##

(wherein R.sub.1 represents a substituent consisting of three or more carbons having an electron-withdrawing group at α-carbon and/or ε-carbon of an amine starting from N, R.sub.2 represents a substituent consisting of three or more carbons which may have an electron-withdrawing group, R.sub.3 represents a substituent consisting of one or more carbons which may have an electron-withdrawing group, and α-carbon of N in the formula (1) is not an electron-withdrawing group.)

[Problem]

To provide a dental photocurable composition which has sufficient mechanical property and whose rheological property is not deactivated even after long-term storage.

[Solution]

The dental photocurable composition of the present disclosure comprises (A) polymerizable monomer, (B) photosensitizer, (D) photopolymerization accelerator and (E) filler, wherein, the dental photocurable composition comprises (D1) aliphatic tertiary amine compound represented by formula (1) as the (D) photopolymerization accelerator, and the dental photocurable composition comprises (E1) hydrophobized silica fine particle having an average diameter of primary particle of 1 to 40 nm as the (E) filler.

##STR00001##

(wherein R.sub.1 represents a substituent consisting of three or more carbons having an electron-withdrawing group at α-carbon and/or ε-carbon of an amine starting from N, R.sub.2 represents a substituent consisting of three or more carbons which may have an electron-withdrawing group, R.sub.3 represents a substituent consisting of one or more carbons which may have an electron-withdrawing group, and α-carbon of N in the formula (1) is not an electron-withdrawing group.)

To provide a dental photocurable composition having good storage stability of a matrix containing a polymerizable monomer and a polymerization initiator, etc. and excellent mechanical strength of a dental photocurable composition comprising a mixture of the matrix and a filler. The dental photocurable composition of the present disclosure comprises a matrix containing (A) polymerizable monomer, (B) photosensitizer, (C) photoacid generator and (D) photopolymerization accelerator, and (E) filler, wherein, the dental photocurable composition comprises (A1) polymerizable monomer having an acidic group as the (A) polymerizable monomer, and the dental photocurable composition comprises (D1) tertiary aliphatic amine compound having Log P of 2 or more and pKa of 10 or less as the (D) photopolymerization accelerator.