Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C13/00—Dental prostheses; Making same
  • A61C13/0003—Making bridge-work, inlays, implants or the like
  • A61C13/0004—Computer-assisted sizing or machining of dental prostheses
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C13/00—Dental prostheses; Making same
  • A61C13/0001—In-situ dentures; Trial or temporary dentures
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C13/00—Dental prostheses; Making same
  • A61C13/0003—Making bridge-work, inlays, implants or the like
  • A61C13/0006—Production methods
  • A61C13/0013—Production methods using stereolithographic techniques
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C13/00—Dental prostheses; Making same
  • A61C13/0003—Making bridge-work, inlays, implants or the like
  • A61C13/0006—Production methods
  • A61C13/0019—Production methods using three dimensional printing
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C13/00—Dental prostheses; Making same
  • A61C13/01—Palates or other bases or supports for the artificial teeth; Making same
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C13/00—Dental prostheses; Making same
  • A61C13/08—Artificial teeth; Making same
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C13/00—Dental prostheses; Making same
  • A61C13/08—Artificial teeth; Making same
  • A61C13/081—Making teeth by casting or moulding
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C13/00—Dental prostheses; Making same
  • A61C13/08—Artificial teeth; Making same
  • A61C13/082—Cosmetic aspects, e.g. inlays; Determination of the colour
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C13/00—Dental prostheses; Making same
  • A61C13/08—Artificial teeth; Making same
  • A61C13/09—Composite teeth, e.g. front and back section; Multilayer teeth
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C13/00—Dental prostheses; Making same
  • A61C13/10—Fastening of artificial teeth to denture palates or the like
  • A61C13/1003—Fastening of artificial teeth to denture palates or the like by embedding in base material
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C13/00—Dental prostheses; Making same
  • A61C13/34—Making or working of models, e.g. preliminary castings, trial dentures; Dowel pins [4]
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C19/00—Dental auxiliary appliances
  • A61C19/003—Apparatus for curing resins by radiation
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C5/00—Filling or capping teeth
  • A61C5/70—Tooth crowns; Making thereof
  • A61C5/77—Methods or devices for making crowns

Definitions

• the invention relates to a method for producing a dental prosthetic shaped part, such as a partial or full denture, which is made of a generatively produced solid model of at least one prosthetic tooth or a denture arch, wherein the denture teeth inside a yakhals endeavor have a lumen into which a dentinticiane, polymerizable composition is filled.
• This composition is then polymerized in at least one step.
• the at least one denture tooth with dentin-colored composition is placed with its cervical side on the tooth-side surface of the denture base and pressed together. Subsequently, the resulting partial or total denture is completely cured in a light curing device.
• the prosthetic moldings obtainable by the process according to the invention.
• digital production methods in the dental field are becoming increasingly important. Dentures, such as Crowns and bridges have been subtly produced in milling by CAD-CAM technology for several years.
• generative methods such as SLS (Selective Laser Sintering) of metal powders and SLM (Selective Laser Melting) of plastic powders for making crowns, bridges, and models, as well as stereolithography for polymer-based dental products, e.g. Provisions, prostheses, orthodontic appliances, bite splints, drilling templates or dental models Increasingly important.
• SLS Selective Laser Sintering
• SLM Selective Laser Melting
• DE10201 1 102095A1 discloses the production of multi-part prostheses, wherein the at least two, in particular 3 + n individual components, which can be connected to one another via at least one contact surface, are produced by means of generative methods.
• DE10201 1 102095A1 discloses prostheses made by assembling said at least two or more generatively produced adjacent individual components.
• DE102007010624A1 discloses a method for the stereolithographic production of a molded part from at least two different solidifiable compositions by solidifying layers of the solidifiable compositions on a base which can be submerged in the masses.
• a complex device with a specific container arrangement is used.
• the object was to provide an economical method that allows the production of high-quality and very esthetic dentures by means of a generative method, such as rapid prototyping.
• the task was to simplify the process and to shorten the duration of the process.
• the object was to provide a high-quality, aesthetic dental prosthesis, which has an enamel-like aesthetics as well as translucency and a dentin-colored core corresponding to a natural tooth simulates.
• an economical method should enable the production of multi-layered or multi-colored prosthetic teeth.
• the objects were achieved with a method according to claim 1 and with the prosthetic molding, in particular the partial or total prosthesis according to claim 12. Surprisingly, it has been possible to develop a method which enables parts of the prosthesis to be inexpensively and efficiently by means of rapid prototyping methods in combination with conventional processing of polymerizable, dental compositions. According to the invention the objects are achieved in that first the total or partial denture is digitally constructed, as shown by way of example in Figure 1. Subsequently, the prosthesis by means of file splitting (dividing the digital data) into a part for the prosthesis base plate, see for example Figure 2a, and a part for the denture teeth, see Figure 2b, disassembled.
• the record of the prosthetic teeth with an indicated cutting edge is due to the software (prior art) initially an open shell (consisting only of surfaces 1) and can be referred to as an open surface shell.
• This surface with an opening synonymous lumen in the direction of the prosthesis base plate, for example, is shown in Figure 1.
• the pure surface envelope - synonymous with digital data of the surface model - consists of a combination of points describing the geometry.
• the points of a point cloud are digitally connected so that they form triangles. So you get a surface consisting of different sized triangles.
• the size of the triangles adapts to the geometry, so there is no unit size of the triangles.
• the wall thickness of the surface shell is, since digitally created, equal to zero, ie the surface shell has a wall thickness of 0 mm.
• This wall thickness is determined during the construction of the partial / total denture and reflects the aesthetic course of the tooth.
• Preferred wall thicknesses are in the range of 0.005 mm up to the tooth center, for example. From 0.005 mm - 5 mm.
• a denture tooth without inner lumen (synonym: Cavity) for filling a dentin-colored dental composition.
• This solid model is then separated by software into parallel layers, as required in the subsequent printing process.
• the solid model in the software is cut into parallel layers with a respective layer thicknesses of approximately 5 to 200 ⁇ m.
• the denture teeth may preferably be made of at least one or different color tooth enamel-like light-curing material by rapid prototyping (RP) method.
• RP rapid prototyping
• the individual teeth are advantageously connected to a dental arch and printed simultaneously.
• the teeth can essentially be printed individually, wherein they are preferably connected to each other at least cervically.
• the denture base by means of a generative method, such as the RP method, are produced.
• the denture base is made from a gingiva-colored, polymerizable dental composition.
• the cavity is filled synonymously lumen of the generated tooth or the wells of the generated dental arch with one or more flowable, dentin-colored, light-curing, dental compositions completely.
• the curing can be done either layer by layer or in one step for all layers - with the exception of the last layer - simultaneously.
• the cavity filled with uncured and optionally cured composition is synonymously compressed the lumen of the denture tooth or denture teeth of the dental arch with the prosthesis base plate, thereby possibly excess or over-swelling, light-curing composition can be removed.
• the compressed prosthesis base and the dental arch can then be cured in a light curing device.
• the prosthesis base either has to have a dispersion layer or has been activated beforehand with eg Palabond. In this curing, all components are glued together permanently and edge gap-free and simultaneously produces the final strength of the prosthesis material.
• This post-curing or bonding takes place with intense light in a wavelength adapted to the respective photoinitiators, for example at 385 nm (Lucirin TPO) or at about 100-600 nm camphorquinone).
• a suitable light device is, for example, the laboratory lamp HiLite power from Heraeus Kulzer GmbH.
• Stereolithography or DLP processes processes for curing liquid monomers by means of UV or visible light
• RP processes are preferred for producing the partial / total prosthesis according to the invention.
• Other conceivable generative or manufacturing methods for producing the dental prosthesis and denture base plate include laser sintering or 3D printing, such as fused deposition modeling.
• the invention thus relates to a method for producing a dental prosthetic shaped part, such as a total or partial denture, denture tooth or dental arch, and the respective prosthetic moldings, obtainable by the method comprising at least one prosthetic tooth or denture teeth, which are preferably connected to a dental arch , and a denture base (plate) by
• (A) 1. (i) providing the digital data of the virtual model of the surface of the at least one prosthetic tooth and / or denture teeth, wherein the surface of the at least one denture tooth forms an internal lumen and / or the surface of the denture teeth independently form a lumen or up to one form common lumen, in particular, the inner lumen may extend at least partially to completely over the inner dental arch, and
• the surface of the at least one denture tooth forms an inner lumen and / or the surface of the prosthetic teeth independently form a lumen or form up to a common lumen, in particular the inner lumen can extend at least partially to completely over the inner dental arch, and
• the digital data of the virtual model of the surface of the at least one denture tooth and / or the surface of the dentinal teeth with an internal lumen are converted, in particular by means of computer software, into digital data of a virtual full body model based on the data of the virtual model of the surface of the at least one denture tooth, by calculating a defined wall thickness into the virtual surface model of the denture tooth or of the denture teeth and obtaining the virtual full body model of the at least one denture tooth or the denture teeth, in particular so that the internal one is located Lumen 4 decreases, and optional
• the virtual full-body model of the at least one prosthetic tooth or the denture teeth, in particular the dental arch is digitally decomposed into parallel slices, in particular digital data of the layers for performing the generative method (x, y, z data ),
• step (v) the digital data of the prosthetic base (plate) surface virtual model of step (ii) is presented as closed surface virtual model data, or is closed in (2.2) or in the at least one region, in which the virtual model of the at least one denture tooth or the denture teeth, in particular the dental arch, and the virtual model of the denture base have been divided, generates a closed surface, and optionally (vi) the virtual model of the prosthesis base is digitally decomposed into parallel layers, in particular digital data of the layers being obtained for the implementation of the generative method (x, y, z data),
• (x) obtaining the dental prosthetic molding having at least one denture tooth and a denture base (plate).
• the virtual model of the surfaces of the teeth and prosthesis base may be generated and provided as digital data in accordance with known prior art methods using a computer program.
• the (A) (i) digital data of a virtual model of the surfaces (STL file) of the molding can be detected and / or created in a known manner. For example, by scanning a partially edentulous or edentulous jaw, an impression or a model with or without teeth.
• the digital teeth may be used from a digital library to generate the digital data of a virtual model of the surface (STL) of the molded part or the digital data of the prosthetic teeth model, for example to fit the cervical area of the denture teeth.
• the digital data of the virtual model of the surface are split up (file splitting).
• the digital data of the denture teeth and denture base plate models are isolated and customized in the cervical and toothed areas.
• the layers according to the invention correspond to slices of a defined layer thickness.
• the layers or slices are obtained by the so-called slicing.
• the layers according to the invention comprise wafers, as for example in DLP processes, as well as layers which are obtained by a deposition of webs, as in the FDM process.
• an open lumen is created for the virtual model of the surface of the at least one denture tooth, the denture teeth or the dental arch at the contact surface to the denture base plate, which can be closed again by re-attaching the denture base plate.
• the virtual model of the denture base is calculated as a solid model 10 and digitally decomposed into parallel layers,
• the surface of the denture baseplate in the area where the virtual at least one denture tooth, the denture teeth or the dental arch has been cut after file splitting is an opening in the surface that is closed in the virtual model of the prosthesis base.
• the virtual model of the denture base is calculated as a full-body model and preferably subsequently cut into parallel layers that provide the data for the RP method. For the printing process, the digital data are referenced and the volume shrinkage taken into account.
• the digital data of the virtual model of the surface of the prosthesis base (plate) present in step (v) preferably show a form-fitting fit in the at least one region in which the virtual model of the at least one prosthetic tooth or denture teeth, in particular the dental arch is inserted. or cohesive fit to the cervical, lower and / or inner surface of the solid body model in the region of the respective cervical neck of the at least one prosthetic tooth or dental arch.
• the cervical region of at least one prosthetic tooth 1 .2 corresponds to a negative of the corresponding tooth-shaped region 2.2 of the prosthesis base plate which is designed as a positive. According to the invention, all areas 1 .2 and 2.2 for all teeth individually as Negative and positive provided.
• all the cervical regions of the prosthetic teeth 6 (1 to n) are individually adapted to a tooth-side region 2.2 (1 to n) of the outer surface of the prosthesis base plate.
• all prosthetic teeth are defined specifically assigned to a toothless area of the prosthesis base plate, thus there is a coding in the type key / lock instead. Consequently, the joint between prosthetic tooth and base plate in the form of recesses and correspondingly shaped counterparts are preferably in the form of a unique fit.
• the wall thickness expands only inwards into the interior of the teeth and reduces the lumen or the cavity within the surface, possibly down to zero, ie a solid model whose surface in the region of the neck corresponds to a negative of the surface of the prosthesis base.
• step B the real models of denture teeth and denture base are made.
• the digital model of the prosthesis base may be converted to a solid model in step (v) prior to performing step (vi).
• the digital model of the prosthesis base can be converted to full-surface layers during or after disassembly into layers after performing step (vi).
• Conceivable is also a conversion into printing lines.
• the preparation according to the invention is preferably carried out in an RP process in which an entire layer of the polymeric composition is simultaneously polymerized.
• a wall thickness in the virtual solid model of greater than or equal to 0.005 to 3 mm, in particular greater than or equal to 0.025 mm is preferably generated, in particular from 0.025 mm to a solid model without inner lumen, wherein the cervical, inner surface of the solid model in the Range of each Cervical neck corresponds to a negative of the tooth-side outer surface of the denture base.
• Preferred wall thicknesses are 0.05 to 5 mm, preferably 0.075 to 2.5 mm.
• the lumen can be provided in a denture tooth, in each prosthetic tooth depending on a lumen or a common lumen on all prosthetic teeth in a dental arch.
• a lumen is preferably provided for each denture tooth in the anterior region, while a common lumen can be present in the other teeth of the dental arch.
• the dental arch of the denture teeth may also have a single lumen. It is clear to the person skilled in the art that any conceivable combination can be prepared by the process according to the invention and is available. Therefore, denture teeth or dental arches with the aforementioned wall thicknesses are the subject of the invention. Furthermore, the virtual solid-state model obtained in the method according to the invention in step (iii) has a lumen whose dimensions depend in particular on the wall thickness.
• the wall thicknesses of the generatively produced at least one prosthetic tooth, the denture teeth and / or the dental arch produced in the generative method are preferably greater than or equal to 0.025 mm, preferably 0.05 mm to 5 mm, more preferably 0.075 mm to 2 mm or up to a solid body without inner lumen, wherein the cervical, inner surface of the solid body in the region of the respective cervical neck corresponds to a negative of the tooth-side outer surface of the prosthesis base.
• a dental arch has a common lumen over at least two denture teeth.
• the denture teeth of the anterior region each have a lumen.
• two or more prosthetic teeth form a virtual solid-body model in that they are each connected proximally and form at least part of a dental arch, in particular form 2 to 16 teeth each approximal connected a dental arch as a virtual full-body model of an upper or lower jaw.
• two or more of the generatively produced denture teeth are connected proximally and form at least part of a dental arch, in particular 2 to 16 teeth are produced, each of which forms a tooth arch of an upper or lower jaw.
• the invention also provides a dental arch obtainable by the method.
• the digital layers of the denture teeth, the dental arch and / or the prosthesis base (plate) preferably have a layer thickness (z-data) of 5 to 200 ⁇ , in particular a layer thickness of 25 to 200 ⁇ , more preferably from 25 to 100 ⁇ , especially preferably from 25 to 50 ⁇ .
• the preparation of the prosthetic moldings, such as the denture teeth, ie the denture teeth with lumen and / or the denture base plate is preferably carried out in a generative process comprising a photochemical polymerization (radiation curing), stereolithography and / or 3D-printing.
• the preparation is carried out in a generative process with homogenized light quantity distribution with a surface light modulator, such as a rapid prototyping method, in which homogenized with light distribution, in particular with an LED projector in which the light quantity distribution, as disclosed in DE102012224005A1 ,
• a surface light modulator such as a rapid prototyping method, in which homogenized with light distribution, in particular with an LED projector in which the light quantity distribution, as disclosed in DE102012224005A1 .
• the method according to the invention preferably comprises a step of generatively producing the denture tooth, the denture teeth, the dental arch and / or the denture base plate, wherein a photochemical polymerization of a liquid Zusannnnener comprising monomers and / or polymers triggered by a light source takes place.
• the light source used is preferably a beamer or a laser system, in particular having a radiation with a wavelength of 100 to 600 nm, preferably of 180 to 440 nm, preferably a LED beamer with a radiation of 385 nm or 430 nm is used or a Laser system with radiation with a wavelength between 220 and 440 nm.
• the virtual full body model optionally comprising at least one prosthetic tooth with lumen up to a solid model in which the at least one denture tooth without inner lumen, the surface of this solid model in the cervical region of the respective cervix of the denture teeth, in particular the dental arch, without an inner lumen Negative corresponds to the tooth-side outer surface of the area of the prosthesis base, and
• At least one prosthetic tooth or denture teeth, in particular a dental arch, are produced in a generative process.
• the invention likewise relates to a process which, in a process step (B), is carried out after carrying out step (viii).
• Lumen per tooth the at least one lumen is at least partially filled with at least one or more flowable, dentin-colored, polymerizable dental compositions in one or more steps, optionally, the dental composition is at least partially polymerized,
• the dental prosthetic molding of a partial or total denture is obtained. It is particularly preferred if, after assembly, the composition in the partial / total prosthesis is further polymerized by means of UV and / or VIS light.
• the partial polymerization can be carried out after step (B) (viii) and before performing step (ix).
• the at least one lumen is preferably at least partially filled with at least one or more flowable, dentin-colored, UVA / IS-polymerizable dental compositions and polymerized in one or more steps with UV and / or VIS light.
• the filling can be carried out in one step, in several steps, such as in 1 to 20 steps, whereby the polymerization of the compositions can likewise be carried out once or several times.
• Joining in the method according to the invention is preferably carried out (ix) by joining the at least one denture tooth or the denture teeth, in particular a dental arch, and the prosthesis base to form a dental prosthetic shaped part a) and then polymerizing the dentin-colored dental composition, or
• step of the method is carried out a (a) filling a polymerizable, dental, in particular flowable, composition in the lumen of the at least one denture tooth or in the / the lumen of the denture teeth, in particular the dental arch, and
• the method according to the invention makes it possible to automate the individual method steps up to the automation of all method steps.
• the steps (A), (B), in particular (viii) and (ix), preferably (ix) a, b, c or d and / or e, can be automated, in particular partially or completely.
• the connection of the denture tooth, the denture teeth or the dental arch with the prosthesis base plate is carried out in particular edge gap-free.
• compositions which comprise monomers, in particular di (meth) acrylates, and optionally fillers, in particular dental glasses, are preferably used as the polymerisable, dental composition in the process according to the invention.
• the composition preferably has a viscosity of 10 2 to 10 6 mPas. Preference is given to a viscosity of 2 * 10 2 mPas after a 248 sec. Continuous load, of about 5 * 10 5 mPas during the build-up of the load and at rest of about 10 6 mPas.
• the inventive method allows in a special way an optimal adaptation of the geometry and / or tooth colors and / or gingival colors and their course, gradation in selected areas of the prosthetic restoration in an automated process.
• the respective dentin color can be optimally adapted to the tooth color of the generatively produced shell of the dental prosthesis or the dental arch. Therefore, the inventive method allows a very economical production of partial or total prosthetic restorations in one automated procedures while maintaining the highest aesthetic demands on the prosthetic restoration. In this way, an economic adaptation of the tooth colors to the residual dentition can take place.
• the dental, polymerizable compositions for the generative preparation of the denture teeth, the light-curing dentin-colored composition as well as the composition for the generative preparation of the denture base may exemplarily comprise the following components.
• a light-curing composition is preferably used for producing the abovementioned parts of the prosthesis.
• a typical composition may comprise (a) at least one curable monomer and / or polymer component and optionally (b) at least one filler component.
• the proportion of the monomers in the overall composition can be up to 100% by weight, preferred are from 40 to 99.99% by weight, in particular 50 to 99.99% by weight or from 98% by weight up to 99 , 99 wt .-%, wherein 0.01 to 2 wt% initiators, stabilizers or auxiliaries may be included.
• a composition as filler component (b) may comprise a total filler content in relation to the total composition of from 10 to 98% by weight, in particular from 60 to 95% by weight comprising (b.1) from 10 to 35% by weight , in particular 10 to 30 wt .-%, preferably 10 to 25 wt .-%, particularly preferably 15 to 25 wt .-%, in particular silanized oxide particles and / or (b.2) at least one dental glass from 0 to 75 wt.
• % in particular from 10 to 65 wt .-%, particularly preferably from 40 to 60 wt .-%, such as 45 to 50 or 50 to 65 wt .-%, preferably a mixture of dental glasses from 50 to 90% coarse and 10 to 50% finely divided dental glass is used, which have a size ratio, based on the average particle size (d 5 o value), from finely divided to coarsely divided from 30: 1 to 1: 30, and optionally, (b.3) 0, 5 to 10% by weight of non-agglomerated nanofillers with particle sizes of 1 to 50 nm.
• the proportion of (a) monomers in the total composition may be from 2 to 90% by weight, in particular from 5 to 80% by weight, the composition optionally comprising at least 0.1% by weight of initiators, in particular from 0.1 to 2% by weight.
• curable or polymerisable monomer and / or polymer components preference is given to selecting one or more monomers from the monomer mixture (i), (ii) and (iii) for the composition:
• radical TEDMA trimethylene glycol dimethacrylate
• multifunctional crosslinkers in particular 0 to 15% by weight, in particular 0.01 to 10% by weight, with respect to the total composition
• (i), (ii) and (iii) may be present in total from 5 to 90 wt .-% in the dental material, preferably 50 to 85 wt .-%, c) to 1% initiator (s) and optionally (b) to 100% by weight of at least one filler component in the composition, such as silica.
• particulate organic polymers may be included in the total composition at 100% by weight.
• Non-agglomerated nanofillers are known per se and e.g. in WO0130305A1 or the example of SiO2 in DE19617931 A1. They may preferably be selected from the group S1O2, ZrO2, T1O2, Al2O3 and mixtures of at least two of these substances. They can-as described in DE19617931 A1-be dispersed in organic solvents, but also be added in solvent mixtures containing water or water.
• Barium glass powder preferably barium glass aluminum borosilicate glasses, and / or strontium glass powder are particularly suitable as dental glasses.
• the average particle size of the coarse-particle dental glasses is preferably 5-10 ⁇ m, in particular around 7 ⁇ m, and that of the finely divided 0.5-2 ⁇ m, in particular 1 ⁇ m.
• Optionally available further dental glasses have, for example, average particle sizes of 2-5 or 10-50 [Micro] nn.
• the filler component may accordingly comprise dental glasses having a total of three or more particle fractions. It may also contain other conventional fillers customary in the dental field, such as quartz, glass-ceramic or mixtures thereof. In addition, the composites may contain fillers for increased radiopacity.
• the dental material preferably comprises as curable monomer and / or polymer component the following monomers or polymers:
• Suitable monomers are the monomers customary in the dental field: Examples are free-radically polymerizable monomers such as mono (meth) acrylates, methyl, ethyl, butyl, benzyl, furfuryl or phenyl (meth) acrylate, polyfunctional monomers such as polyfunctional Acrylates or methacrylates, for example bisphenol A di (meth) acrylate, bis-GMA (an addition product of methacrylic acid and bisphenol A diglycidyl ether), UDMA (urethane dimethacrylate), for example an addition product of 2-hydroxyethyl methacrylate and 2,2,4 Hexamethylene diisocyanate), di-, tri- or tetraethylene glycol di (meth) acrylate, decanediol di (meth) acrylate, dodecanediol di (meth) acrylate, hexyldecanediol di (meth) acrylate, trimethylolpropan
• bis-GMA bis-GMA
• TEDMA triethylene glycol dimethacrylate
• UDMA urethane dimethacrylate
• TCD-di-HEMA bis (methacryloyloxymethyl) tricyclo [5.2.1.0 2,6 ] decane
• TCD-di-HEA bis (meth) (acryloyl oxymethyl) tricyclo [5.2.1.0 2,6 ] decane).
• At least one monomer selected from the following or mixtures thereof may be used: 2,2-bis-4- (3-methacryloxy-2-hydroxypropyl) -phenylpropane (bis-GMA), ie, the reaction product of glycidyl methacrylate and bisphenol -A (OH-containing), and 7,7,9-trimethyl-4,13-dioxo-3,14-dioxa-5,12-diazahexadecane-1,16-diyldimethacrylate (UDMA), ie the urethane dimethacrylate from 2 mol 2-hydroxyethyl methacrylate (HEMA) and 1 mole of 2-2,4-trimethylhexamethylene diisocyanate (urethane group-containing).
• bis-GMA 2,2-bis-4- (3-methacryloxy-2-hydroxypropyl) -phenylpropane
• HEMA 2-hydroxyethyl methacrylate
• urethane group-containing 1,3-meth
• reaction products of glycidyl methacrylate with other bisphenols such as Bisphenol-B (2,2'-bis- (4-hydroxyphenyl) -butane), bisphenol-F (4,4'-bis (hydroxyphenyl) -methane), (2,2'-methylenediphenol) or 4,4 ' Dihydroxydiphenyl, and reaction products of 2 moles of HEMA or 2-hydroxypropyl (meth) acrylate with, in particular 1 mole, known diisocyanates, such as hexamethylene diisocyanate, m-xylylene diisocyanate or tolylene diisocyanate, suitable as crosslinking monomers.
• bisphenols such as Bisphenol-B (2,2'-bis- (4-hydroxyphenyl) -butane), bisphenol-F (4,4'-bis (hydroxyphenyl) -methane), (2,2'-methylenediphenol) or 4,4 ' Dihydroxydiphenyl
• Suitable polyfunctional crosslinkers other than TEDMA and UDMA are: diethylene glycol di (meth) acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol tetra (meth) acrylate and butanediol di (meth) acrylate, 1, 10-decanediol di (meth) acrylate, 1, 12-dodecanediol di (meth) acrylate.
• the dental material may preferably comprise as curable monomer and / or polymer component monomers and / or polymers also the following: One or more ethylenically unsaturated compounds with or without acid functionality.
• curable monomer and / or polymer component monomers and / or polymers also the following: One or more ethylenically unsaturated compounds with or without acid functionality.
• mono-, di- or poly (meth) acrylates, ie acrylates and methacrylates such as methyl (meth) acrylate, ethyl acrylate, isopropyl methacrylate, n-hexyl acrylate, stearyl acrylate, allyl acrylate, glycerol triacrylate, ethylene glycol diacrylate, diethylene glycol diacrylate, triethylene glycol dimethacrylate, 1, 3-propanediol (meth) acrylate, trimethylolpropane triacrylate, 1, 2,4-butanetriol trimethacrylate, 1,4-cyclohexanediol diacrylate, pentaerythritol tetra (meth) acrylate, sorbitol hexacrylates, tetrahydrofurfuryl (meth) acrylate, bis [1- (2 -acryloxy)] - p -ethoxyphenyldi
• the polymerizable component may also have hydroxyl groups and ethylenically unsaturated groups in a single molecule.
• examples of such materials include hydroxyalkyl (meth) acrylates such as 2-hydroxyethyl (meth) acrylate and 2-hydroxypropyl (meth) acrylate; Glycerol mono- or di (meth) acrylate; Trimethylolpropane mono- or di (meth) acrylate; Pentaerythritol mono-, di- and tri- (meth) acrylate; Sorbitol mono-, di-, tri-, terra- or penta (meth) acrylate and 2,2-bis [4- (2-hydroxy-3-methacryloxypropoxy) phenyl] propane (BisGMA) or mixtures of ethylenically unsaturated compounds.
• BisGMA 2,2-bis [4- (2-hydroxy-3-methacryloxypropoxy) phenyl] propane
• the curable or polymerizable component may comprise PEGDMA (polyethylene glycol dimethacrylate having a molecular weight of about 400 g / mol), GDMA (glycerol dimethacrylate), TEGDMA (triethylene glycol dimethacrylate) and / or NPGDMA (neopentyl glycol dimethacrylate) and mixtures thereof.
• PEGDMA polyethylene glycol dimethacrylate having a molecular weight of about 400 g / mol
• GDMA glycerol dimethacrylate
• TEGDMA triethylene glycol dimethacrylate
• NPGDMA neopentyl glycol dimethacrylate
• the composites contain a polymerization initiator, for example an initiator for free-radical polymerization.
• a polymerization initiator for example an initiator for free-radical polymerization.
• the mixtures may be cold, cross-linked by radiation, i. UV or VIS crosslinked or polymerizable by the addition of heat.
• initiators for the temperature-induced polymerization known peroxides can be used, such as dibenzoyl peroxide, dilauroyl peroxide, tert-butyl peroctoate or tert-butyl perbenzoate, but also alpha, alpha'-azo-bis (isobutyroethylester), benzopinacol and 2,2'-dimethylbenzopinacol ,
• the initiators for temperature-induced polymerization can be used according to the invention for curing the dentin-colored composition and / or for bonding the denture teeth to the prosthesis base plate.
• photoinitiators which are used are benzoin alkyl ethers or esters, benzil monoketals, acylphosphine oxides or aliphatic and aromatic 1 .2-diketo compounds, for example 2,2-diethoxyacetophenone 9,10-phenanthrenequinone, diacetyl, Fe, anisil, 4,4'-dichlorobenzil and 4,4'-dialkoxybenzil or Cannpherquinone in question.
• the photoinitiators are preferably used together with a reducing agent.
• reducing agents are amines such as aliphatic or aromatic tertiary amines, for example N, N-dimethyl-p-toluidine or triethanolamine, Cyanethylmethylanilin, triethylamine, ⁇ , ⁇ -dimethylaniline, N-methyl-diphenylamine, ⁇ , ⁇ -dimethyl-sym. xylidine, N, N-3,5-tetramethylaniline and ethyl 4-dimethylaminobenzoate or organic phosphites.
• amines such as aliphatic or aromatic tertiary amines, for example N, N-dimethyl-p-toluidine or triethanolamine, Cyanethylmethylanilin, triethylamine, ⁇ , ⁇ -dimethylaniline, N-methyl-diphenylamine, ⁇ , ⁇ -dimethyl-sym.
• Common photoinitiator systems include camphorquinone plus ethyl 4- (N, N-dimethylamino) benzoate, 2- (ethylhexyl) -4- (N, N-dimethylamino) benzoate or N, N-dimethylaminoethyl methacrylate.
• 2,4,6-trimethylbenzoyldiphenylphosphine oxide is particularly suitable as an initiator for the polymerization initiated by UV light.
• UV photoinitiators may be used alone, in combination with a visible light initiator, a cold cure initiator, and / or a temperature induced cure initiator.
• initiators for the cold polymerization radical-forming systems for. B.
• the initiators for cold polymerization can be used to cure the dentin-colored composition or to bond the denture teeth to the prosthesis base plate
• the composite material may be divided into two components which are intended to be cured by mixing. It is also possible to provide the material so that it is to be cured by both VIS and / or UV light and by mixing two components.
• the two components of the dentin-colored material may be present in two pastes or as a powder / liquid system.
• the radical initiator system required for the polymerization is divided into the two pastes or contained in the liquid component (A) and / or the powdery component (B). Details regarding this are known to the person skilled in the art.
• the initiator system usually in both components, the liquid component and the powdery component, before and is accordingly merged in the mixing of these components.
• the initiator is usually present in the polymer component, ie the pulverulent component. Only when mixing the initiator then enters the liquid monomer component.
• prosthesis starting materials can be provided in which the initiator component (C) is present in the powdery component (B), in particular in the form of peroxides, perketals, peresters and / or azo compounds. This may be z. B. also to residual contents of not reacted in the preparation of powdery components initiator components, z.
• peroxides such as dibenzoyl peroxide.
• Suitable initiators for the polymerization reaction of cold-curing or autopolymerizing starting mixtures are, in principle, those with which free-radical polymerization reactions can be started.
• Preferred initiators are peroxides such as dibenzoyl peroxide, dilauroyl peroxide and di-t-butyl peroxide and azo compounds such as azobis (isobutyronitrile) (AIBN).
• LPO dilauroyl peroxide
• BPO dibenzoyl peroxide
• t-BPEH tert-butyl per-2-ethylhexanoate
• AIBN 2,2'-azobis (isobutyronitrile)
• DTBP di-tert-butyl peroxide
• suitable activators for.
• aromatic amines are added.
• suitable amines N, N-dimethyl-p-toluidine, N, N-dihydroxyethyl-p-toluidine and p-Dibenzylaminobenzoeklathylester.
• the amines regularly act as co-initiators and are usually present in an amount of up to 0.5 wt .-% in relation to the total composition.
• redox systems in particular combinations of dibenzoyl peroxide, dilauroyl or camphorquinone with amines such as N, N-dimethyl-p-toluidine, N, N-dihydroxyethyl-p-toluidine and p-dimethylaminobenzoyl acid diethyl ester.
• amines such as N, N-dimethyl-p-toluidine, N, N-dihydroxyethyl-p-toluidine and p-dimethylaminobenzoyl acid diethyl ester.
• redox systems those may also be used which, in addition to a peroxide, also contain ascorbic acid or its derivatives, barbituric acid or a barbituric acid derivative or a sulfinic acid as reducing agent.
• such a redox system contains barbituric acid or thiobarbituric acid or a barbituric acid or thiobarbituric acid derivative (for example 0.01-10% by weight), at least one copper salt or a copper complex (for example 0.1-8% by weight). and at least one compound having an ionic halogen atom (for example, 0.05 to 7% by weight) each in terms of the initiator system content of 0.01 to 1% by weight based on the total composition.
• benzene-5-phenylbarbituric acid, copper acetylacetonate and benzyldibutylammonium chloride may be mentioned as suitable constituents of the abovementioned redox system.
• the curing of the compositions is preferably carried out by redox-induced radical polymerization at room temperature or at slightly elevated temperature under slight pressure to avoid blistering.
• initiators for the room temperature polymerization e.g. Barbituric acids used in conjunction with copper and chloride ions. This system is characterized by a high color stability.
• the liquid composition for the generative production of the at least one denture tooth comprises at least one monomer, in particular at least one di (meth) acrylate, particularly preferably the composition comprises UDMA, ethoxylated bisphenol-A and optionally dental glasses and fumed silica.
• the generatively produced prosthetic tooth (6) has a translucency of> 50%.
• the polymerized dentin-colored, dental composition has a translucency of greater than or equal to 35% and / or the at least one generatively produced denture tooth or the dental arch has a translucency of greater than or equal to 55 to 65%.
• the liquid composition for the generative preparation of the denture base (plate) at least one monomer, in particular at least one di (meth) acrylate and optionally fillers such as dental glasses with d 5 o ⁇ 2 ⁇ and optionally fumed silicic acids.
• the invention also prosthetic moldings, in particular dental prosthetic moldings selected from prosthetic tooth, denture teeth, dental arch comprising denture teeth, prosthesis base (plate) and / or total or partial denture and provisional prosthetic moldings comprising provisional Prosthesesähe, provisional dental arch, provisional prosthesis base plate and / or provisional Partial / total prosthesis (real models in each case).
• dental prosthetic moldings selected from prosthetic tooth, denture teeth, dental arch comprising denture teeth, prosthesis base (plate) and / or total or partial denture and provisional prosthetic moldings comprising provisional Prosthesesähe, provisional dental arch, provisional prosthesis base plate and / or provisional Partial / total prosthesis (real models in each case).
• the invention likewise relates to the use of a flowable, dentin-colored, polymerizable, dental composition comprising dental glasses in the method according to the invention.
• the invention further provides the use of a total or partial prosthesis obtainable by the method according to one of the claims as (i) a provisional prosthesis or (ii) as a real model of a provisional prosthesis for adapting the provisional prosthesis to the dental situation of the patient or (iii) as a real model of a provisional prosthesis for adapting the provisional prosthesis to the dental situation of the patient and for scanning the thus adapted provisional prosthesis and optionally for adapting the virtual model of the at least one prosthetic tooth or denture teeth, in particular a dental arch, and the prosthesis base plate for the generative production the total or partial denture of the patient.
• Fig. 1 Cut total denture 0 or digital data of the virtual model of the surface 0 of the prosthetic molding
• Fig. 2a prosthesis base (plate) 2 after file splitting
• Fig. 2b Dentures 1 after file splitting
• FIG. 3 shows a sectional representation of a real total prosthesis 5 with denture tooth 6 of a defined wall thickness 7 and a polymerized composition 8 in the lumen 4 joined to a prosthesis base plate 9.
• Fig. 4a Sectional view of virtual dental prosthesis (s) 1 with a defined wall thickness
• FIG. 1 shows a cut total prosthesis 0 from the digital data of the virtual model of the surface 0 of the prosthetic molding. This data set is then divided with the software (file splitting) into the digital data of the prosthesis base (plate), which are shown in FIG. 2a as a prosthesis base plate 2 and into the digital data of the dental prostheses 1, which are shown in FIG. 2b as the surface cover of the dental prostheses are.
• the cervical area of the denture tooth is shown at the neck of the tooth (invisible to the underside)
• FIG. 1 shows the supragingival surface 2.3 of the prosthesis base (above the gum).
• FIG. 2a also shows the crestal region 2.2 into which the virtual model of the at least one prosthetic tooth 1 or the prosthetic teeth 1 and the virtual model of the prosthesis base 2 have been divided or alternatively the closed crestal surface 2.2 in this area.
• region 2.2 the cervical region 1.2 of the denture tooth is joined, in particular by polymerization of excess dental composition 12 after the denture and the denture base plate have been pressed together.
• FIG. 3 shows a sectional view of the produced real total prosthesis 5 with denture tooth 6.
• the denture tooth has a defined wall thickness 7 and a polymerized composition 8 in the lumen 4.
• the denture tooth 6 was joined to a prosthesis base plate 9.
• FIGS. 4a to 4c show various stages of the production of the prosthetic tooth 1.
• FIG. 4a shows a cross-section through the virtual model 1 of the tooth of the solid-body model 11 with a constructed defined wall thickness 3 and remaining lumen or hollow space 4.
• 1.2 represents the cervical area of the tooth.
• the real prosthetic tooth is transformed into a stereolithography method 6 produced with a defined wall thickness 7 and lumen 4, as shown in Figure 4b.
• FIG. 4 c illustrates a further method step in which the dental, dentin-colored composition 12 is filled into the lumen 4 of the prosthetic tooth 6.
• the composition 12 may be polymerized and subsequently further dental composition 12 may be filled into the lumen.
• the denture tooth 6 is placed on the prosthesis base 9, pressed together and polymerized with UV light.
• the partial or total prosthesis 5 thus produced can be post-coated in the light furnace.
• Table 2 Examples of composition dentin-colored composition (Flowable)
• Tooth-side area which is formed by dividing the virtual model of the at least one denture tooth 1 or of the denture teeth 1 and the virtual model of the denture base 2 or alternatively the closed tooth-side
• the solid model 10 is digitally split into parallel layers, and the prosthesis base 9 is produced in a generative method

Landscapes

• Health & Medical Sciences (AREA)
• Oral & Maxillofacial Surgery (AREA)
• Dentistry (AREA)
• Epidemiology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Dental Prosthetics (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=55629017

Family Applications (1)

Country Status (6)

Cited By (2)

Families Citing this family (16)

Citations (3)

Family Cites Families (17)

• 2015
  • 2015-03-24 DE DE102015104394.7A patent/DE102015104394B4/de active Active
• 2016
  • 2016-03-22 US US15/560,781 patent/US20180078348A1/en not_active Abandoned
  • 2016-03-22 JP JP2017549784A patent/JP6861640B2/ja active Active
  • 2016-03-22 WO PCT/EP2016/056252 patent/WO2016150955A1/de not_active Ceased
  • 2016-03-22 EP EP20163304.7A patent/EP3689290B1/de active Active
  • 2016-03-22 EP EP16711816.5A patent/EP3280348B1/de active Active
  • 2016-03-22 CN CN201680017802.0A patent/CN107427347B/zh active Active

Patent Citations (3)

Also Published As

Similar Documents

Legal Events