Abstract: Mixing elements for static mixer utilizing mixing low- to high-viscosity components are provided and comprise a planar central part extending along a longitudinal axis L and having front and rear faces, wherein arranged on the front and/or rear face are at least two flow-influencing elements that each surround at least one through-opening located in the central part and that are each in the form of prism lateral surfaces that are substantially perpendicular to the front and/or rear face, wherein pairs of the elements overlap or are connected to one another at a lateral edge. Static mixers comprising the mixing element and methods for mixing low- to high-viscosity components with the static mixers are also provided.

Abstract: Cartridge piston devices and methods for inserting into cartridges and for venting and rear-side closing of the cartridges are provided. The devices and methods have a closure element for inserting into the piston, wherein the closure element or at least part of the closure element are inserted into the recess arranged so as to be guided adjustably in the insertion direction from an open position fluidically opening up the channel structure into a closed position fluidically closing the channel structure.

Abstract: Electronic dental dispensing devices is provided for applying and polymerizing dental compositions, wherein the devices comprise a housing with a handle having a connection geometry in the front housing region for receiving an application capsule with an outlet comprising the composition or for receiving an adapter for receiving an application capsule with an outlet comprising the composition. The devices further comprise: a reading unit in the front housing region for a contactless data exchange using electromagnetic induction or by means of electromagnetic radiation; a radiation source for polymerizing the applied composition; an electronic vibration unit in the housing; a manual or electronic pressing-out device in the housing for pressing the composition out of the outlet of the application capsule; an electric heat source; a data transmission module; a battery; and at least one control unit.

Abstract: Curable and/or cross-linkable compositions are disclosed and comprise addition-cross-linkable terminal ethylene-group-containing polydialkyl siloxanes and Si—H-group-containing polydialkyl siloxanes having a specific Si—H group content in relation to ethylene groups.

Abstract: An object of the invention is a polymerizable composition comprising. 0.01 to 90 wt.-% of at least one inorganic filler component, 5 to 99.97 wt.-% comprising at least two urethane acrylates, wherein one urethane acrylate corresponding to formula I and the second urethane acrylate having at least one bifunctional thiolurethane group and at least one olefinic group, and mixtures of urethane acrylates comprising these, 0.01 to 25 wt.-% of at least one di-, tri-, tetra- or multi-functional monomer having at least one ether group, thioether group, an at least tri-functional triester and/or a di-functional diester, the diester being selected from tricyclodecanedimethanol dimethacrylate and tricyclodecanedimethanol diacrylate or mixtures of these di-, tri-, tetra- or multi-functional monomers, 0.01 to 10 wt.-% of at least one initiator, an initiator system, and optionally at least one stabilizer and optionally at least one pigment, wherein the total composition of the polymerizable composition is 100 wt.-%.

Abstract: Curable and/or cross-linkable composition are disclosed and comprise addition-cross-linkable terminal ethylene-group-containing polydialkyl siloxanes and Si—H-group-containing polydialkyl siloxanes having a specific Si—H group content in relation to ethylene groups.

Abstract: Polymerizable, light-radiation curable dental composite materials are provided and comprise (i) 30 to 90 wt. % of at least one inorganic filler component comprising at least one dental glass and optionally at least one amorphous metal oxide, (ii) 5 to 60 wt. % of at least one urethane acrylate, urethanemethacrylate or mixtures thereof, (iii) 0.01 to 30 wt. % of at least one di-, tri-, tetra- or multifunctional monomer which is not urethane acrylate and/or urethane alkylacrylate, and (iv) 0.01 to 10 wt. % comprising hexaarylbisimidazol (HABI) and/or substituted hexaarylbisimidazol and comprising at least one mercaptotetrazol as the initiator system, and optionally at least one pigment, wherein the total composition of the composite material is 100 wt. %.

Abstract: The invention relates to a polymerisable dental composite material comprising (i) 40 to 90% by weight of an inorganic filler component comprising at least one dental glass, as well as optionally at least one an amorphous metal oxide, (ii) 10 to 60% by weight of at least one urethane (alkyl) acrylate of the idealised formula I, (iii) 0.01 to 15% by weight of at least one di-, tri-, tetra- or multi-functional monomer not being a urethane (alkyl) acrylate, (iv) 0.01 to 10% by weight of at least one initiator, of an initiator system, as well as optionally of at least one stabiliser, and optionally of at least one pigment, the total composition of the composite material amounting to 100% by weight, as well as to a polymerised composite material for producing direct dental restorations or indirect dental restorations.

Abstract: There is provided a curable composition preparation kit, including: a first agent containing a first monomer; and a second agent containing a second monomer, in which at least one of the first agent or the second agent each independently contains an ascorbic acid-type compound and a compound A containing at least one of an alkoxysilyl group or a hydroxysilyl group.

Abstract: The invention relates to a method for packaging dental components, comprising the method steps: producing or providing a dental component; arranging the dental component with a support side on a support surface of a three-dimensional carrier element, the dental component projecting beyond the edge of the support surface on at least one side, forming a peripheral area; providing a sheet-like semi-finished plastic product comprising a thermoplastic resin; forming the sheet-like plastic semi-finished product in a thermoforming process for form closure of the dental component in a plastic structure, such that the dental component is positively surrounded by the plastic structure in the peripheral area on the support side of the dental component; and separating the dental component partially surrounded by the plastic structure from the carrier element to obtain a packaging system comprising the dental component packaged in the plastic structure.

Abstract: The invention relates to a retraction paste comprising a composition of i) 10 to 25% by weight at least one astringent compound, ii) 50 to 75% by weight fillers, iii) 10 to 35% by weight protic liquid, and iv) 0 to 10% by weight pigments, dye and/or rheology additive, ii) the fillers comprising kaolinite and mica in the ratio of 4:1 to 1.5:1 and, the total composition of components i) to iv) in the retraction paste amounting to 100% by weight, a method for producing the retraction paste, a kit comprising a container with the retraction paste for single or repeated use, as well as a retraction paste as an agent for haemostasis.

Abstract: The invention relates to a method (100) for congruent alignment of a first polygonal multi-edge geometry (2) of a rotor shaft (3) of a dynamic mixer (4) with a second polygonal multi-edge geometry (5) of a drive shaft (6) of a motor (7) of a mixing apparatus (8), and optionally insertion of the second polygonal multi-edge geometry (5) of the drive shaft (6) of the motor (7) of the mixing apparatus (8) into or onto the first polygonal multi-edge geometry (2) of the rotor shaft (3) of the dynamic mixer (4), as well as a dynamic mixer for use in the method as also use of the mixer in the method.

Abstract: A polymerisable radiation-curable composition comprising: (i) monomers, comprising at least (a) a first monomer having a TG (glass-transition point) of the homopolymer of said first monomer ?120° C. and at least (b) a second monomer having a TG (glass-transition point) of the homopolymer of the second monomer ?100° C., wherein at least one of the at least one first monomer or of the at least one second monomer has an alicyclic group, and comprising (ii) at least one further component, comprising at least one photo-initiator for the UV and/or Vis spectral region or a photo-initiator system for the UV and/or Vis spectral region. Also disclosed is a blank in the form of a three-dimensional moulded body of a polymerised composition, in particular a radiation-cured composition, for producing 3D moulded bodies, dental prosthetic parts, orthopaedic appliances or dental pre-forms in a rapid prototyping, rapid manufacturing, or rapid tooling method.

Abstract: Polymerizable, radiation-curable compositions are provided and comprise (i) monomers and (ii) at least one further component, wherein the (i) monomers comprise (a) at least one urethane (meth)acrylate that is at least difunctional, (b) at least one monofunctional acrylate having an alicyclic group and/or at least one monofunctional methacrylate having an alicyclic group, and (ii) the at least one further component comprises (c) at least one photoinitiator for the UV and/or visible range or a photoinitiator system for the UV and/or visible range. The compositions are usable for producing, via a rapid prototyping, manufacturing, or tooling process, dental prosthetic parts, orthopaedic instruments, or dental pre-forms that have a flexural strength of greater than or equal to 75 MPa, a modulus of elasticity of greater than or equal to 2600 MPa, and/or a water absorption of less than 45 [?g/mm3].

Abstract: The invention relates to a polymerisable composition comprising (i) 0 to 90% by weight of at least one inorganic filler component, (ii) 5 to 99.98% by weight of at least one urethane (alkyl) acrylate of the idealised formula I, (iii) 0.01 to 25% by weight of at least one di-, tri-, tetra-or multi-functional monomer, not being a urethane (alkyl) acrylate, (iv) 0.01 to 10% by weight of at least one initiator, of an initiator system as well as optionally of at least one stabiliser and optionally of at least one pigment, the total composition of the composition amounting to 100% by weight, as well as a polymerised composition having improved fracture toughness.

Abstract: An object of the invention is a polymerizable composition comprising. 0.01 to 90 wt.-% of at least one inorganic filler component, 5 to 99.97 wt.-% comprising at least two urethane acrylates, wherein one urethane acrylate corresponding to formula I and the second urethane acrylate having at least one bifunctional thiolurethane group and at least one olefinic group, and mixtures of urethane acrylates comprising these, 0.01 to 25 wt.-% of at least one di-, tri-, tetra- or multi-functional monomer having at least one ether group, thioether group, an at least tri-functional triester and/or a di-functional diester, the diester being selected from tricyclodecanedimethanol dimethacrylate and tricyclodecanedimethanol diacrylate or mixtures of these di-, tri-, tetra- or multi-functional monomers, 0.01 to 10 wt.-% of at least one initiator, an initiator system, and optionally at least one stabilizer and optionally at least one pigment, wherein the total composition of the polymerizable composition is 100 wt.-%.

Abstract: The object of the invention is a thermoplastic composition comprising A) 5 to 5000 parts by weight of poly(dialkylphenylene) ether with alkyl comprising 1 to 6 carbon atoms, B) 100 parts by weight of thermoplastic styrene polymer, C) 0.001 to 1500 parts by weight of core-shell particles, wherein the shell of the core-shell particles comprises thermoplastic polymers, in particular thermoplastic acrylate-based polymers comprising homo- and copolymers, and the core comprises elastomers, in particular elastic polymers comprising homo- and copolymers or mixtures of polymers, whose TG is below 0° C., and D) 0 to 2550 parts by weight of inorganic filler.

Abstract: A polymerisable radiation-curable, in particular UV-Vis-, UV- or Vis-curable, composition comprising: (i) monomers, wherein the monomers comprise: (a.1) at least one triacrylate derived from 1,3,5-tris(?-hydroxyalkyl) isocyanurate, wherein the hydroxyalkyl residue comprises 1 to 8 C-atoms and may be linear, branched and/or cyclic, and (a.2) at least one di-functional monomer, not being a urethane (meth)acrylate, and (ii) at least one further component, comprising: at least one photo-initiator for the UV and/or Vis spectral region or a photo-initiator system for the UV and/or Vis spectral region.

Abstract: Self-adhesive, radiation-curable fissure sealants and methods comprise a white pigment, A) a monomer component comprising a) at least one difunctional urethane (meth)acrylate, b) at least one hydrophilic alkylene oxide-based difunctional (meth)acrylate-based crosslinker, c) a mixture of acidic monomers of an olefinic carboxylic acid and/or of an olefinic carboxylic anhydride in combination with an olefinic acidic monoester of a phosphoric acid and/or an olefinic acidic monoester of a thiophosphoric acid, and d) an initiator and/or an initiator system, each having an absorption maximum of 420 to 550 nm, optionally with a co-initiator, and B) a filler component comprising at least one dental glass, wherein A) the monomer component and B) the filler component are present in a mass ratio of 60:40 to 100:0 in the fissure sealant, and wherein the total composition of the fissure sealant comprises 100 wt.-%.

Abstract: Mixing capsules and methods are provide and comprise a first chamber to receive a composition A and a second chamber to receive a composition B, wherein the first chamber and the second chamber are arranged rotatably about the longitudinal axis of the mixing capsule, the first chamber comprising a first opening, the second chamber comprising a second opening, the first opening and the second opening being arranged perpendicularly to the longitudinal axis and plan-parallelly to each other and/or perpendicularly spaced, the first opening and the second opening being arranged incongruently to each other in a storage position, the first opening and the second opening being arranged congruently to each other in a handling position.