WO1987005800A2 - Masse polymerisable pour la fabrication d'elements moules ne durcissant pas, notamment de protheses dentaires - Google Patents

Masse polymerisable pour la fabrication d'elements moules ne durcissant pas, notamment de protheses dentaires Download PDF

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Publication number
WO1987005800A2
WO1987005800A2 PCT/DE1987/000135 DE8700135W WO8705800A2 WO 1987005800 A2 WO1987005800 A2 WO 1987005800A2 DE 8700135 W DE8700135 W DE 8700135W WO 8705800 A2 WO8705800 A2 WO 8705800A2
Authority
WO
WIPO (PCT)
Prior art keywords
cuvette
polymerized
mass
soft
prosthesis
Prior art date
Application number
PCT/DE1987/000135
Other languages
German (de)
English (en)
Other versions
WO1987005800A3 (fr
Inventor
Wolfgang Heynold
Siegfried Reiss
Original Assignee
Wolfgang Heynold
Siegfried Reiss
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wolfgang Heynold, Siegfried Reiss filed Critical Wolfgang Heynold
Publication of WO1987005800A2 publication Critical patent/WO1987005800A2/fr
Publication of WO1987005800A3 publication Critical patent/WO1987005800A3/fr

Links

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
    • A61C13/0025—Linings
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
    • A61K6/884—Preparations for artificial teeth, for filling teeth or for capping teeth comprising natural or synthetic resins
    • A61K6/887—Compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
    • A61K6/884—Preparations for artificial teeth, for filling teeth or for capping teeth comprising natural or synthetic resins
    • A61K6/891—Compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • A61K6/893—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F299/00—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers
    • C08F299/02—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates
    • C08F299/06—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates from polyurethanes
    • C08F299/065—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates from polyurethanes from polyurethanes with side or terminal unsaturations

Definitions

  • the invention relates to a polymerizable composition for the production of soft molded parts of denture parts in particular and also relates to a method for producing such prostheses using the composition according to the invention and finally to a mold and an apparatus for performing the method.
  • Dental prostheses made of plastic are known and basically manufactured in such a way that the plastic forming the prosthesis is introduced into a cavity shaped according to the impression, which also contains the tooth position, plastic and the polymer is polymerized out.
  • plastic forming the prosthesis is introduced into a cavity shaped according to the impression, which also contains the tooth position, plastic and the polymer is polymerized out.
  • polymerizable plastic compositions are used and, depending on the type of plastic, appropriate polymerization processes are used which are generally known and so far require no further explanation and lead to more or less well-fitting prostheses.
  • plastics based on methyl methacrylate for the prosthesis padding, which remain soft due to the addition of plasticizers, has also proven to be disadvantageous.
  • embrittlement occurs immediately, which can be attributed to the fact that the plasticizer migrates, with further complications that plasticizers are known to be good breeding grounds for bacterial formation, so that odor nuisance very often results from such prostheses.
  • plastic mixtures that remain soft (exact composition unknown) without plasticizers are known, which, although less prone to embrittlement, but practice has shown, such prostheses are also extremely bacteria-friendly and also immediately lead to unpleasant odors.
  • the invention is therefore based on the object to provide a polymerizable mass for the production of soft molded parts, in particular dental prostheses, which do not have the disadvantages mentioned, well as pourable and, if necessary, also pasty as moldable or directly applicable to a model in some areas Have the manufacture of such special prostheses processed, which are hygienically perfect and which form a firm connection with the actual prosthesis body, so that there is no fear of detachment.
  • the mass according to the invention can also be used for the production of so-called gum epitheses, especially since the same mass can be used here by appropriate hardness adjustment, on the one hand to form the surface shell which is labially harder on the face side, while the mass set according to the invention is used on the tooth side, which is then suitable according to the impression molded nubs with which the epithesis can be locked in the interdental areas. Since the mass according to the invention has very good hygienic properties, it is also, for example, for producing otoplastic parts, for example, but also for medical hose lines and the like. Like. Suitable. The proviso that.
  • components a) and b) should be present in the mixture in a ratio such that shore hardnesses of 20 to 80 are obtained ben and a tensile strength of at least 0.3 is due to the fact that these components a) and b) can be brought together in different mixing ratios, ie different oligomers of component a) can be mixed together with the different types of component b) for which, however, according to exemplary embodiments still to be explained, in each case different mixing ratios are to be observed.
  • the components according to a) and b) are mixed for the preparation of the composition, and a component according to c) which is effective for polymerization is also added, which depends on the type of polymerization to be used. For reasons of process engineering, the use of components which have an effect on light polymerization is preferred, which will be explained in more detail below.
  • bactericidal additives can be added to it without further ado.
  • a mold cavity corresponding to the impression must of course also be used, as mentioned above, into which the composition and also that for the actual prosthesis body must be introduced and then polymerized.
  • the procedure according to the invention is such that the molded part that remains soft and elastic is manufactured separately and introduced into the cavity for the manufacture of the entire prosthesis in a polymerized final form and the tooth cavity on the tooth position side is filled with the hard polymerizing plastic and polymerized.
  • the manufacturing process for the prosthesis is advantageously carried out in such a way that transparent duplicating material is used for the second molded upper part to be molded onto the removed wax model and light-polymerizable plastic is used for the remaining soft-elastic prosthesis part and this is light-polymerized with the transparent top attached.
  • transparent duplicating material is used for the second molded upper part to be molded onto the removed wax model and light-polymerizable plastic is used for the remaining soft-elastic prosthesis part and this is light-polymerized with the transparent top attached.
  • the composition according to the invention is almost fully polymerized during light polymerization, so that the residual monomer content is advantageously below 0.5%.
  • the procedure is advantageously carried out in such a way that both the molding and solidification of the duplicating material for both upper mold parts and the polymerization of the plastics which remain soft and elastic and the hard polymerizing plastics take place while maintaining a differential pressure between the upper and lower mold parts, that there is less pressure on the lower part than on the upper part.
  • This measure is known in principle according to DE-PS 34 40 205, but in the present case it ensures in particular that the duplicating compound and also the plastics lie optimally on the lower part of the mold.
  • the shape or the cuvette that is used for the method according to the invention essentially corresponds to previous cuvette shapes, such as are used for the aforementioned method according to DE-PS, but in this form alone, however, not for the implementation of the method using light polymerization is sufficient.
  • the shape must consist of a further cuvette upper part which can also be connected to the lower part of the cuvette and which is designed as a frame which keeps the entire cross-section of the cuvette free and which corresponds to the receiving contour of the lower part of the cuvette.
  • the device for carrying out the method by means of the above-mentioned special form requires special training, starting from a pressure-tight seal and with Pressurizable container with a connection for the lower mold part connected to the atmosphere, in that at least one polymerization-effective light source is arranged in the interior of the container.
  • Fig. 1 the process diagram for the manufacture of a mandibular prosthesis
  • Fig. 3 the cuvette for carrying out the method
  • Fig. 4 the device for light polymerization
  • Fig. 5 shows the device for the polymerization of the entire prosthesis.
  • FIG. 1 in which half a cuvette part is always shown only in a highly schematic manner.
  • W is the wax model and Z the tooth position.
  • the cuvette top 1 is poured out with duplicating compound, which forms the top 3 after solidification, which is then removed as a whole with the cuvette top 1.
  • the wax model W is now, as shown to the right of it, removed to the thickness that the soft cushion part is to receive. This residual wax model is designated W '.
  • a new upper part 6 of the cell which has the shape of a frame 6 'which keeps the overall cross section of the cell, is now placed on this prepared lower part 2 of the cell.
  • the cuvette After a corresponding polymerization time (10 to 15 minutes depending on the setting of the mass), the cuvette is removed again and the top part of the cuvette with the transparent doubling gel, through which the light polymerization was carried out, is removed.
  • the cuvette upper part 1 with its molded upper part 3, which is also made of duplicating material, is put back on again (see bottom right in FIG. 1) and now the plastic K, which forms the actual prosthesis body, and the tooth position, is placed in the remaining cavity Includes Z, filled with appropriate pouring channels and with the whole cuvette in the vertical position, vertically adjusted in a container according to FIG. 5 and polymerized under pressure and heat, depending on the type of plastic K.
  • the light polymerization method can of course be used for this final polymerization through a transparent upper mold part 3 can also be used, regardless of whether, as mentioned above, a soft cushion part is already present in the mold cavity or not.
  • the process steps for the manufacture of a maxillary prosthesis is the process steps for the manufacture of a maxillary prosthesis, only half of the cuvette part being shown here as well. It is also important here to replace the cuvette upper parts 1 and 6, but removal of the wax model W, as described above, is not absolutely necessary, since only the area of the so-called gum envelope edge is to be grasped here and designed as a soft cushion part.
  • the transparent duplicating material is filled into the frame 6 '(hatched), but only up to a height as indicated, i.e. up to the upper limit of the area forming the gum envelope edge.
  • the upper part is raised.
  • the solidification can be accelerated, for example, by inserting the cuvette horizontally, as shown, into a container according to FIG. 4, which is equipped on the bottom with a heat exchanger 13 in the form of a cooling coil through which the water in the container 11 is heated can be withdrawn.
  • a container according to FIG. 4 which is equipped on the bottom with a heat exchanger 13 in the form of a cooling coil through which the water in the container 11 is heated can be withdrawn.
  • phase B After lifting off the upper part, the entire wax model W is now removed in phase B, so that the soft-elastically polymerizing plastic mass WE can now be introduced into the groove between the lower mold part 4 made of plaster and the "molded upper part" 3 'made of transparent duplicating material. If desired, as indicated, the exposed surface of the lower mold part 4 made of plaster can also be applied with a thin layer WE 'of the same soft-elastic polymerizing material (phase C). In this state, the cuvette is placed in the container 11 4 and exposed to the whole of the polymerizing radiation emitted by the emitter 12 for a sufficiently long time to polymerize the mass WE and the thin layer WE '.
  • the frame-like cuvette upper part 6 is replaced again with the cuvette upper part 1 provided (phase D), so that after the appropriate pouring channels (see phase E), the hard-polymerizable plastic K is introduced into the vertical position of the cuvette and the whole is then placed in a container 15 as shown in FIG. 5 can be polymerized.
  • the cuvette lower part is designed in the sense of DE-PS 34 40 205, i.e. in such a way that a lower pressure is established on the lower mold part 4 than on the upper mold part 3 or 3 '.
  • the cuvette upper part 1 is shown in FIG. 3 advantageously designed in such a way that a closable filler neck 8 is interchangeably arranged in the at least one filling opening 5 and that a differential pressure piston device 9 is also releasably provided on the cuvette, the piston 10 of which having the larger area is located outside the cuvette.
  • a differential pressure piston device 9 is also releasably provided on the cuvette, the piston 10 of which having the larger area is located outside the cuvette.
  • the differential pressure piston device 9 after the mold cavity has been filled, it can also be used directly anchored in the filler neck 8.
  • test specimens in disk form with a thickness of 30 mm and 5 mm were produced from the mass mixtures in question using light polymerization (about 15 minutes) and the hardness was measured on them.
  • the tensile strength (RF) was measured according to DIN 53 504 at 21 ° C on appropriate test specimens.
  • partial areas are to be present on a prosthesis as soft cushion parts, these partial areas can be made on the plaster model (form lower part) can be achieved by direct application of paste-like compositions, in which case the plaster model with the applied partial mass areas is exposed to polymerizing light and, after polymerisation, the molded upper part 1 is placed, the plastic K is poured in and the whole is polymerized with respect to the plastic K.
  • phase E in FIG. 2 which of course also applies to a lower jaw prosthesis in this case.
  • the finely hatched part then only represents a partial application of paste-like mass and, if provided, the dashed layer application does not have to extend over the entire model area.
  • Embodiment 5 for a pourable plastic mass is a liquid crystal display
  • the methyl and ethyl methacrylate are introduced into a 10 liter vessel and then the urethane oligomer is added with stirring. This mixture is stirred until the mixture is homogeneous. In the absence of light, the correspondingly weighed amount of UV initiator is then also added while stirring continuously. The whole thing is done at normal temperature. The homogeneous mixture is then filled into light-tight consumer containers (e.g. bottles).
  • UV initiator acetophen derivative
  • suitable thickener 20 g UV initiator (acetophen derivative) 60 g suitable thickener
  • these components are mixed together under the same conditions as in embodiment 5 in a correspondingly smaller vessel, the thickener finally being added with rapid stirring and likewise being distributed homogeneously.
  • This homogeneous mass is then also filled into light-tight consumer containers in the form of tubes, which expediently have a pointed mouthpiece, so that the mass can be applied directly to desired sub-areas of the model, as described above, using this tube, if necessary. Silicon dioxide was used as the thickener.

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • Chemical & Material Sciences (AREA)
  • Plastic & Reconstructive Surgery (AREA)
  • Dentistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Dental Preparations (AREA)

Abstract

La masse polymérisable décrite est constituée d'un mélange de: a) oligomères d'uréthane avec un ou plusieurs groupes d'acrylate et/ou de méthacrylate provoquant la polymérisation; b) un ou plusieurs C1-C14-alkylacrylates, -méthacrylates, -bi- ou -tri(méth)acrylates; c) constituants provoquant la polymérisation sélectionnés dans le groupe des cétales de benzyle, esters de cétoxime, benzophénones, quinones de camphre, en particulier les dérivés d'acétophénone et les composés d'oxyde de phosphine d'acyle, les constituants a) et b) étant contenus dans la masse dans un rapport tel que cette dernière présente une dureté Shore comprise entre 20 et 80, de préférence entre 40 et 60 et une résistance à la rupture minimale de 0,3 N/m2 à l'état polymérisé. Cette masse est mise en oeuvre de telle manière que l'élément moulé demeurant souple est fabriqué séparément et est introduit, sous la forme finale polymérisée, dans la cavité pour la fabrication de la prothèse complète, et le reste de la cavité du côté positionnement de la prothèse est rempli de plastique à polymérisation dure et polymérisé.
PCT/DE1987/000135 1986-03-29 1987-03-27 Masse polymerisable pour la fabrication d'elements moules ne durcissant pas, notamment de protheses dentaires WO1987005800A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863610683 DE3610683A1 (de) 1986-03-29 1986-03-29 Polymerisierbare masse fuer die herstellung weichbleibender formteile von insbesondere zahnprothesen
DEP3610683.6 1986-03-29

Publications (2)

Publication Number Publication Date
WO1987005800A2 true WO1987005800A2 (fr) 1987-10-08
WO1987005800A3 WO1987005800A3 (fr) 1988-03-24

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WO (1) WO1987005800A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5554665A (en) * 1993-06-23 1996-09-10 Dentsply Research & Development Corp. Method and dispenser for making dental products
EP1589039A1 (fr) * 2003-01-28 2005-10-26 National Institute for Materials Science Precurseur de cristaux colloidaux gelifies, cristaux colloidaux gelifies, et procede et dispositif de fabrication de cristaux colloidaux gelifies

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3928987A1 (de) * 1989-09-01 1991-03-28 Siegfried Reiss Verfahren und formmasse zur herstellung von formlingen fuer den dentalbereich
DE4028728A1 (de) * 1990-09-10 1992-03-12 Wolfgang Dreve Verfahren zur herstellung einer kunststoff-zahnprothese
JPH09504572A (ja) * 1994-11-04 1997-05-06 ザ カー コーポレイション 放射線硬化可能な成形用組成物
DE10127728B4 (de) 2001-06-07 2008-04-17 Ivoclar Vivadent Ag Kunststoffzahn sowie Verfahren zu seiner Herstellung
US6923649B2 (en) 2001-06-07 2005-08-02 Ivoclar Vivadent Ag Artificial tooth and a process for making an artificial tooth
DE102015112800A1 (de) 2015-04-09 2016-10-13 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Mehrteilig aufgebaute Dentalprothese sowie Verfahren und Vorrichtung zu ihrer Herstellung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1441108A (en) * 1973-01-23 1976-06-30 Redfarn C A Cross linked polymers
US4024637A (en) * 1975-07-11 1977-05-24 Polythetics, Inc. Dentures and process for making the same
US4110184A (en) * 1973-04-24 1978-08-29 Imperial Chemical Industries Limited Photocurable dental filling compositions
DE3209547A1 (de) * 1981-03-16 1982-10-21 ESPE Fabrik pharmazeutischer Präparate GmbH, 8031 Seefeld Geraet zum behandeln von zahnersatzteilen
DE3440205C1 (de) * 1984-10-17 1986-03-20 Wolfgang 6000 Frankfurt Heynold Verfahren und Vorrichtung zur Herstellung von Zahnprothesen oder Prothesenteilen aus polymerisierbaren Kunststoff
US4595364A (en) * 1984-02-15 1986-06-17 Molten Corp. Dental prosthesis and process for preparing the same
DE3522526A1 (de) * 1985-06-24 1987-01-02 Herbert Hofinger Duplierkuevettensatz fuer dentalmodelle

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1401805A (en) * 1972-03-15 1975-07-30 Amalgamated Dental Co Ltd Dental filling materials

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1441108A (en) * 1973-01-23 1976-06-30 Redfarn C A Cross linked polymers
US4110184A (en) * 1973-04-24 1978-08-29 Imperial Chemical Industries Limited Photocurable dental filling compositions
US4024637A (en) * 1975-07-11 1977-05-24 Polythetics, Inc. Dentures and process for making the same
DE3209547A1 (de) * 1981-03-16 1982-10-21 ESPE Fabrik pharmazeutischer Präparate GmbH, 8031 Seefeld Geraet zum behandeln von zahnersatzteilen
US4595364A (en) * 1984-02-15 1986-06-17 Molten Corp. Dental prosthesis and process for preparing the same
DE3440205C1 (de) * 1984-10-17 1986-03-20 Wolfgang 6000 Frankfurt Heynold Verfahren und Vorrichtung zur Herstellung von Zahnprothesen oder Prothesenteilen aus polymerisierbaren Kunststoff
DE3522526A1 (de) * 1985-06-24 1987-01-02 Herbert Hofinger Duplierkuevettensatz fuer dentalmodelle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5554665A (en) * 1993-06-23 1996-09-10 Dentsply Research & Development Corp. Method and dispenser for making dental products
EP1589039A1 (fr) * 2003-01-28 2005-10-26 National Institute for Materials Science Precurseur de cristaux colloidaux gelifies, cristaux colloidaux gelifies, et procede et dispositif de fabrication de cristaux colloidaux gelifies
EP1589039A4 (fr) * 2003-01-28 2008-11-26 Nat Inst For Materials Science Precurseur de cristaux colloidaux gelifies, cristaux colloidaux gelifies, et procede et dispositif de fabrication de cristaux colloidaux gelifies

Also Published As

Publication number Publication date
WO1987005800A3 (fr) 1988-03-24
DE3610683A1 (de) 1987-10-01

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