Abstract: The present invention relates to dental compositions comprising a halogenated epoxy functional ether derivative comprising at least one aryl alkyl ether moiety, at least one halogen atom attached to each aryl residue of the aryl alkyl ether moieties, at least two aliphatic epoxy moieties, no glycidyl ether structure, an initiator, optionally filler and optionally additive components selected from the group of modifiers, dyes, pigments, thixotropic agents, flow improvers, polymeric thickeners, surfactants, odorous substances, diluting agent(s) and flavorings.

Abstract: The invention relates to preparations based on aziridino polymers and comprising monofunctional aziridines and to the use thereof in producing dental materials, especially impression materials.

Abstract: A nozzle head (5) for a powder jet device (1), for use in applying dental material, comprises a first fluid flow path (8) for delivering a powder/fluid mixture to a first discharge nozzle (8A). A second fluid flow path (6) is provided for delivering a liquid to a second discharge nozzle (6A) located adjacent the first discharge nozzle (8A), so that the materials discharged by the first and second discharge nozzles combine at a desired location to form a dental composition. A nozzle-clearing member (10) is located inside the nozzle head and is movable to remove powder material from the first discharge nozzle when the flow of powder/fluid mixture to the nozzle ceases.

Abstract: The present invention relates to a composition with enhanced speed of set, especially to a method of making rubber-like elastomers with improved hardening characteristics. In this respect the present invention provides a composition comprising with respect to the cured composition a ethylene imine group containing component A, a SO2—NH group containing component B and an initiator C. Optionally additives like modifiers, fillers, dyes, pigments, thixotropic agents, flow improvers, polymeric thickeners, surfactants, odorous substances, diluters and flavorings can be added.

Abstract: The invention relates to a curable dental retraction composition comprising alginate and a solvent, with the proviso that essentially no crosslinker in an amount effective to start setting of the curable dental retraction composition is present. The invention also relates to a container containing said composition and to a kit comprising two parts, wherein the first part comprises the curable dental retraction composition of the present invention and the second part comprises a crosslinker being able to start setting of the dental retraction composition.

Abstract: The invention relates to a dental composition comprising a hardenable powder to be used in a process for retraction of dental tissue. The invention also relates to a kit of parts comprising the dental composition comprising a hardenable powder, a hardening agent, optionally a handpiece of a powder jet device, optionally a powder jet device, and optionally retraction caps. In a further aspect, the invention relates to a method for retracting dental tissue comprising the steps of applying a dental composition comprising a hardenable powder with a powder jet device into the sulcus between soft and hard dental tissue, applying a composition comprising a hardening agent either before or after the previous step, leaving the dental composition in the sulcus for a time sufficient to effect retraction of the soft dental tissue and removing the dental composition from the sulcus.

Abstract: The present invention relates to a dental composition comprising least one carbosilane compound comprising at least one Si-Aryl bond, at least one silicon atom, no Si-Oxygen bond, at least one aliphatic epoxy moiety, wherein said carbosilane compound has no glycidyl ether moieties; and an initiator, optionally filler and optionally additive components selected from the group of modifiers, stabilizers, dyes, pigments, thixotropic agents, flow improvers, polymeric thickeners, surfactants, odorous substances, diluting agent(s) and flavorings.

Abstract: The invention relates to a composition comprising a prepolymer as component (A), wherein the prepolymer comprises aziridino groups and is characterized by an equivalent weight EW1, a crosslinker as component (B), wherein the crosslinker has a structure being different from the structure of the prepolymer and comprises at least three 2-alkyl-substituted aziridino groups and is characterized by an equivalent weight EW2, an initiator as component (C) being able to start curing of the composition, optionally filler(s) as component (D) and optionally additive(s) as component (E), wherein equivalent weight is defined as (molecular mass of the molecule)/(number of aziridino groups present in the molecule) and wherein EW1>EW2. The invention also relates to the use of the composition for coating, sealing, moulding, adhering, making impressions, producing a dental material.

Abstract: The invention relates to a curable dental retraction composition for reacting gingiva from a prepared tooth structure. The composition comprises an alginate, a di- and/or trivalent ion source, water, a retarder and a filler.

Abstract: The present invention is directed to dental compositions that can be used as adhesives for bonding a dental material to a dental structure surface and/or as a dental restorative material. The dental composition is preferably applied to a dental structure surface under conditions effective to etch the dental structure surface.

Abstract: The invention relates to a curable composition comprising prepolymer (A) having the formula: (L-C(?O)—O—)nP wherein L is a group represented by the following formula ?with the N,N? bridging unit being part of a heterocyclic quasi-aromatic ringsystem, optionally containing O, N or S, preferably an azolide, P is a prepolymer backbone having a molecular weight (Mn) of at least 500, n is at least 2, and crosslinker (B) comprising at least 3 nucleophilic groups. The curable composition can be used for coating, sealing, moulding, adhering, making impressions, especially in the dental field.

Abstract: The invention relates to preparations based on polymerizable polyether materials and a fluidity improver and to the use thereof in producing dental materials, especially impression materials.

Abstract: The invention relates to a dental retraction device to be used for retracting the gingiva from a prepared tooth structure, the retraction device having the shape of a cord with a radial (x- and y-direction) and longitudinal direction (z-direction) and comprising an absorbing agent and optionally a retarding agent, wherein the retraction device is able to expand in the radial direction (x- and/or y-direction), but essentially does not expand in the longitudinal direction (z-direction) upon contact with fluid.

Abstract: The invention relates to a composition comprising a prepolymer as component (A), wherein the prepolymer comprises aziridino groups and is characterized by an equivalent weight EW1, a crosslinker as component (B), wherein the crosslinker has a structure being different from the structure of the prepolymer and comprises aziridino groups and is characterized by an equivalent weight EW2, an initiator as component (C) being able to start curing of the composition, optionally filler(s) as component (D) and optionally additive(s) as component (E), wherein equivalent weight is defined as (molecular mass of the molecule)/(number of aziridino groups present in the molecule) and wherein EW1>EW2. The invention also relates to the use of the composition for coating, sealing, moulding, adhering, making impressions, producing a dental material.

Abstract: The invention relates to plastics which are self-disinfecting. The invention relates in particular to polyether or silicone based dental plastics and impression materials in which a biocidal material is incorporated. The dental impression material ace. to the invention comprises at least a polymerizable base paste BP and a non-aqueous catalyst paste CP, wherein the base paste BP comprises about 0.001 to about 10% by weight of a water-stable anti-microbial agent. Preferred anti-microbial agents are selected from the group consisting of Hexitidin, Cetypyridininumcloride (CPC), Chlorhexidine and its derivates (CHX) and Triclosan.

Abstract: The present invention is directed to dental compositions that can be used as adhesives for bonding a dental material to a dental structure surface and/or as a dental restorative material. The dental composition is preferably applied to a dental structure surface under conditions effective to etch the dental structure surface.

Abstract: The present invention relates to dental compositions comprising a halogenated epoxy functional ether derivative comprising at least one aryl alkyl ether moiety, at least one halogen atom attached to each aryl residue of the aryl alkyl ether moieties, at least two aliphatic epoxy moieties, no glycidyl ether structure, an initiator, optionally filler and optionally additive components selected from the group of modifiers, dyes, pigments, thixotropic agents, flow improvers, polymeric thickeners, surfactants, odorous substances, diluting agent(s) and flavourings.

Abstract: The present invention is directed to dental compositions that can be used as adhesives for bonding a dental material to a dental structure surface and/or as a dental restorative material. The dental composition is preferably applied to a dental structure surface under conditions effective to etch the dental structure surface.

Abstract: The invention relates to an initiator comprising at least one structural element characterized by the following formula (I) wherein X? is a non or low coordinating anion, R1, R2, R3, R4 are independently linear, cyclic or branched C1-C20 alkyl or alkylene groups, wherein one or more of the methylene groups contained in the alkyl or alkylene group can be substituted by —CO—, —CONH—, —CON(CH3)—, —S— and/or —O—, and wherein R1, R2, R3 and/or R4 can act as a bridging element connecting two or more structural elements. The invention is also related to a process of producing the initiator and to a curable composition comprising the initiator, a process for producing the curable composition a kit comprising a cationically curable composition and the inventive initiator and the use of the initiator or the curable composition comprising the initiator for various applications, especially in the dental field.

Abstract: The present invention relates to a dental composition comprising least one carbosilane compound comprising at least one Si-Aryl bond, at least one silicon atom, no Si—Oxygen bond, at least one aliphatic epoxy moiety, wherein said carbosilane compound has no glycidyl ether moieties; and an initiator, optionally filler and optionally additive components selected from the group of modifiers, stabilizers, dyes, pigments, thixotropic agents, flow improvers, polymeric thickeners, surfactants, odorous substances, diluting agent(s) and flavourings.