Abstract: The invention relates to a rotor shaft for a dynamic mixer, in particular a dental dynamic mixer, for mixing low to high viscous components, comprising a mixing area and a connection geometry adjoining the mixing area, the mixing area comprising a central shaft having a distal end and a proximal end abutting the connection geometry, and having at least one worm thread, in particular the rotor shaft has at least two mixing sections, a first mixing section comprising at least two mixing blades radially oriented on the surface of the central shaft and a second mixing section comprising at least one worm thread having spirally running thread flanks, the spirally running thread flanks peripherally entwining the surface of the central shaft. Furthermore, the invention relates to a dynamic mixer, in particular a dental dynamic mixer, comprising the rotor shaft, as well as its use for mixing low to high viscous components.

Abstract: A method for producing a guide rail having the steps of: (A) generating or providing a virtual 3D model of a dental prosthesis with at least one virtual model of a machined prosthetic tooth to be arranged in a prosthesis base; (B) calculating a volume to be removed from a prefabricated prosthetic tooth; (C) generating a virtual model of a guide rail which is fixed to a mount for fastening the prefabricated prosthetic tooth such that the guide rail enables guidance of a milling head and/or a cutting tool of known dimensions, in such a manner that the volume to be removed from the prefabricated prosthetic tooth is traversed with the milling head; and (D) producing a physical guide rail on the basis of the virtual model of the guide rail using a CAM method. Also disclosed are an apparatus for implementing the method, a method for basally shortening prosthetic teeth, and a method for producing a dental prosthesis with such a method for producing a guide rail.

Abstract: A preliminary product for the production of prosthetic teeth for a dental prosthesis, the preliminary product having a plurality of prefabricated prosthetic teeth and a mounting geometry, the prefabricated prosthetic teeth having a preformed coronal surface and a preformed circumferential surface which adjoins the coronal surface, the mounting geometry having at least one strut, wherein the at least one strut is embodied in one piece with at least one of the prefabricated prosthetic teeth, wherein the prefabricated prosthetic teeth are fixable in position with the mounting geometry in a mount of a CAM apparatus in such a way that the prefabricated prosthetic teeth are mechanically machinable with the CAM apparatus. Also provided is a method for the production of such a preliminary product and to a method for the production of a dental prosthesis using a CAM method.

Abstract: A method for producing a guide rail having the steps of: (A) generating or providing a virtual 3D model of a dental prosthesis with at least one virtual model of a machined prosthetic tooth to be arranged in a prosthesis base; (B) calculating a volume to be removed from a prefabricated prosthetic tooth; (C) generating a virtual model of a guide rail which is fixed to a mount for fastening the prefabricated prosthetic tooth such that the guide rail enables guidance of a milling head and/or a cutting tool of known dimensions, in such a manner that the volume to be removed from the prefabricated prosthetic tooth is traversed with the milling head; and (D) producing a physical guide rail on the basis of the virtual model of the guide rail using a CAM method. Also disclosed are an apparatus for implementing the method, a method for basally shortening prosthetic teeth, and a method for producing a dental prosthesis with such a method for producing a guide rail.

Abstract: The subject matter of the invention is an autopolymerisable two-component prosthetic base material and a method for its production comprising A) at least one liquid monomer component, and B) at least one powdered component, whereby the prosthetic material comprises in components (A) and/or (B) (i) at least one initiator or one initiator system for autopolymerisation, (ii) core-shell particles modified by an elastic phase, and (iii) at least one urethane (meth)acrylate.

Abstract: A method for producing a dental prosthesis, the method including the following steps: affixing several prefabricated prosthetic teeth in a support; producing a prosthetic base according to a virtual model with a CAM method to create tooth sockets that lie parallel to each other; processing the prosthetic teeth basally and adjacent cervically while held in the support in accordance with the virtual model using a CAM method, so that the roots of the prosthetic teeth produced lie parallel to each other when the prosthetic teeth are inserted into the prosthetic base; and, inserting the processed prosthetic teeth together or in groups into the tooth sockets of the prosthetic base and attaching the processed prosthetic teeth in the tooth sockets. Also provided are a dental prosthesis produced by the method and a device for implementing the method.

Abstract: The invention relates to a method for the production of blocks of material of a polymerized dental composite material as well as to the blocks of material obtainable according to the method, in which (i) a polymerisable dental composite material is transferred into a pressure-resistant casting mould (100), (ii) a pressure in the range of 10 to 500 MPa is applied to the polymerisable dental composite material in the pressure-resistant casting mould, and (iii) at least a part of the casting mould and/or the polymerisable material is heated in a defined manner to a temperature of 90 to 150° C.

Abstract: The invention relates to a method for producing a dental prosthesis, wherein the dental prosthesis has a prosthetic base and several prosthetic teeth, wherein the method is conducted using a virtual three-dimensional dental prosthesis model of the physical dental prosthesis to be produced, and wherein the virtual three-dimensional dental prosthesis model is divided into at least one virtual three-dimensional model of the prosthetic teeth and one virtual three-dimensional model of the prosthetic base, or comprises at least one virtual three-dimensional model of the prosthetic teeth and one virtual three-dimensional model of the prosthetic base, wherein the boundary are between the virtual model of the prosthetic teeth and the virtual model of the prosthetic base is computed such that the prosthetic teeth in the virtual model has roots that are aligned parallel to each other and the prosthetic base in the virtual model has tooth sockets that are aligned parallel, wherein the tooth sockets form a negative shape

Abstract: The subject matter of the invention is a three-dimensional molded body, in particular a milling blank, made of a polymerizable prosthetic material, which is suitable for milling machining by means of CNC and/or CAD/CAM, having a fracture toughness of greater than or equal to 1.9 Mpa·m1/2 and a fracture work of greater than or equal to 900 J/m2. The milling blank preferably comprises core-shell particles modified by an elastic phase and is optionally based on a content of urethane (meth)acrylate polymerized into the polymer. Moreover, a subject matter of the invention is the use of the milling blanks for the production of at least parts of dental prosthetic parts, such as a prosthesis, artificial teeth, bridges, or of orthodontic appliances and instruments in medical field.

Abstract: The invention relates to a process for producing a dental prosthesis with the chronological steps: A) Inserting the prosthetic teeth into the prosthetic base and connecting them with it in such a way that after their insertion into the prosthetic base the prosthetic teeth have limited movability in the prosthetic base B) Changing the position and/or the orientation of at least one prosthetic tooth in the prosthetic base; C) Fixing the prosthetic teeth on the coronal side in a key, and securing the orientation and position of the prosthetic teeth to one another in the changed position and/or orientation; D) Separating the prosthetic teeth from the prosthetic base; F) Fastening the prosthetic teeth in the prosthetic base with a cement or an adhesive, the gaps between the surfaces of the prosthetic base that are provided for fixation of the prosthetic teeth and the prosthetic teeth being filled with the cement or the adhesive; and G) Allowing the cement or adhesive to harden, the prosthetic teeth being solidl

Abstract: 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.

Abstract: The subject matter of the invention is an autopolymerisable two-component prosthetic base material and a method for its production comprising A) at least one liquid monomer component, and B) at least one powdered component, whereby the prosthetic material comprises in components (A) and/or (B) (i) at least one initiator or one initiator system for autopolymerisation, (ii) core-shell particles modified by an elastic phase, and (iii) at least one urethane (meth)acrylate.

Abstract: The subject matter of the invention is a three-dimensional moulded body, in particular a milling blank, made of a polymerisable prosthetic material, which is suitable for milling machining by means of CNC and/or CAD/CAM, having a fracture toughness of greater than or equal to 1.9 Mpa·m1/2 and a fracture work of greater than or equal to 900 J/m2. The milling blank preferably comprises core-shell particles modified by an elastic phase and is optionally based on a content of urethane (meth)acrylate polymerised into the polymer. Moreover, a subject matter of the invention is the use of the milling blanks for the production of at least parts of dental prosthetic parts, such as a prosthesis, artificial teeth, bridges, or of orthodontic appliances and instruments in medical field.

Abstract: The subject matter of the invention is an autopolymerisable two-component prosthetic base material and a method for its production comprising A) at least one liquid monomer component, and B) at least one powdered component, whereby the prosthetic material comprises in components (A) and/or (B) (i) at least one initiator or one initiator system for autopolymerisation, (ii) core-shell particles modified by an elastic phase, and (iii) at least one urethane (meth)acrylate.

Abstract: The invention relates to a process for producing a dental prosthesis with the chronological steps: A) Inserting the prosthetic teeth into the prosthetic base and connecting them with it in such a way that after their insertion into the prosthetic base the prosthetic teeth have limited movability in the prosthetic base B) Changing the position and/or the orientation of at least one prosthetic tooth in the prosthetic base; C) Fixing the prosthetic teeth on the coronal side in a key, and securing the orientation and position of the prosthetic teeth to one another in the changed position and/or orientation; D) Separating the prosthetic teeth from the prosthetic base; F) Fastening the prosthetic teeth in the prosthetic base with a cement or an adhesive, the gaps between the surfaces of the prosthetic base that are provided for fixation of the prosthetic teeth and the prosthetic teeth being filled with the cement or the adhesive; and G) Allowing the cement or adhesive to harden, the prosthetic teeth being solidly c

Abstract: The invention relates to three-dimensional dimensionally-stable moulded parts made of polymeric particles whose particles are connected firmly to each other, at least in part, at the contact sites of the particles, whereby the particles are preferably glued to each other, at least in part, at the contact sites. The pre-packaged moulded parts made of polymeric, powdery particles made of PMMA can take up acrylate or MMA into the porous three-dimensional structure and form a pasty or creamy dough that can be cast, pressed or injected and can be cured by common techniques after the forming. Also subject matters of the invention are the use of and a kit for producing said pasty dough. Said pre-packaged moulded parts are used in methods for producing prostheses, such as dental prostheses, bone cements, investment compounds, in particular of porous substrates, as investment compound in metallography.