A method for the production of dental prosthetic moulded parts as well as a ready for use, polymerisable dental material for the production of dental prosthetic moulded parts, such as of total or partial prostheses, parts of bridges, crowns, is proposed. The ready for use dental material, optionally after mixing the separated two paste dental material having an initiator system separated into the pastes and otherwise being essentially identical dental material, is immediately curable or polymerisable, respectively, into prosthetic moulded parts without swelling time. A kit comprising the ready for use, polymerisable dental material, as well as the use of the kit and a method for the production of dental prosthetic moulded parts is also a subject matter of the invention.

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.

Conventional dental cements lack certain properties such as the facilitation of optimal re-mineral-ization. The novel bioactive glass-ionomer dental and bone cement formulations disclosed herein induces mineralization at the in vivo interface and exhibits superior handling properties (shorter setting time) and mechanical properties (improved bond strength to dentin and flexural strength). The present invention presents the first bioactive glass-ionomer dental cement with mineralization power, exhibiting improved bond strength to tooth structure, sharp setting time and superior me-chanical strength.

Conventional dental cements lack certain properties such as the facilitation of optimal re-mineral-ization. The novel bioactive glass-ionomer dental and bone cement formulations disclosed herein induces mineralization at the in vivo interface and exhibits superior handling properties (shorter setting time) and mechanical properties (improved bond strength to dentin and flexural strength). The present invention presents the first bioactive glass-ionomer dental cement with mineralization power, exhibiting improved bond strength to tooth structure, sharp setting time and superior me-chanical strength.

A free radical polymerization initiator system having at least one monoacylphosphine oxide of formula (I)

##STR00001##

in which R.sup.1, R.sup.2, R.sup.3 independently of one another are each H, or a linear or branched C.sub.1-C.sub.10 alkyl radical or OR.sup.6, R.sup.4 is a linear or branched C.sub.1-C.sub.10 alkyl radical, C.sub.1-C.sub.10 alkoxy radical, cyclohexyl radical or a phenyl, methylphenyl or mesityl radical, R.sup.5 is a linear or branched C.sub.1-C.sub.10 alkyl radical, R.sup.6 is a linear or branched C.sub.1-C.sub.6 alkyl radical, and n is 0, 1, 2 or 3,
and at least one phenolic inhibitor, wherein the molar ratio of inhibitor to photoinitiator is in a range from 0.002 to 0.9. The initiator system is particularly suitable for the photopolymerization of radically polymerizable compositions containing urethane group-containing monomers and for the production of dental moldings with low discoloration.

A free radical polymerization initiator system having at least one monoacylphosphine oxide of formula (I)

##STR00001##

in which R.sup.1, R.sup.2, R.sup.3 independently of one another are each H, or a linear or branched C.sub.1-C.sub.10 alkyl radical or OR.sup.6, R.sup.4 is a linear or branched C.sub.1-C.sub.10 alkyl radical, C.sub.1-C.sub.10 alkoxy radical, cyclohexyl radical or a phenyl, methylphenyl or mesityl radical, R.sup.5 is a linear or branched C.sub.1-C.sub.10 alkyl radical, R.sup.6 is a linear or branched C.sub.1-C.sub.6 alkyl radical, and n is 0, 1, 2 or 3,
and at least one phenolic inhibitor, wherein the molar ratio of inhibitor to photoinitiator is in a range from 0.002 to 0.9. The initiator system is particularly suitable for the photopolymerization of radically polymerizable compositions containing urethane group-containing monomers and for the production of dental moldings with low discoloration.

A hardenable (e.g. dental) compositions is described comprising an encapsulated material. The encapsulated material comprises a basic core material and an inorganic shell material having certain viscosity criteria. Also described are dispensing devices and kits are described comprising a hardenable (e.g. dental) composition comprising a liquid material and an encapsulated material wherein the encapsulated material comprises a basic core material and an inorganic shell material comprising a metal oxide surrounding the core. The dispensing devices and kits can facilitate the methods of applying the hardenable composition. The hardenable or hardened (e.g. cured) composition can provide various technical effects such as a delayed release of a basic core material, a delayed increase in basicity, promoting remineralization of a tooth or bone structure, and increasing the average alkaline phosphatase (ALP) activity of pulp cells. In some embodiments, the composition is a dental (e.g. sealant) composition for application to a tooth structure.

A process for producing a sintered lithium disilicate glass ceramic dental restoration by way of sintering under reduced atmospheric pressure conditions at a temperature above 600 C. is described. Further described is a kit of parts for producing a sintered lithium disilicate glass ceramic dental restoration.

A process for producing a sintered lithium disilicate glass ceramic dental restoration by way of sintering under reduced atmospheric pressure conditions at a temperature above 600 C. is described. Further described is a kit of parts for producing a sintered lithium disilicate glass ceramic dental restoration.

A bone cement comprising an acrylic polymer mixture which is formulated to have a relatively high viscosity for a relatively long window, due to distributions of molecular weights and/or sizes of acrylic beads.