WO2018184680A1 - Élément de facette pour une dent ainsi que procédé pour la fabrication de l'élément de facette - Google Patents

Élément de facette pour une dent ainsi que procédé pour la fabrication de l'élément de facette Download PDF

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Publication number
WO2018184680A1
WO2018184680A1 PCT/EP2017/058170 EP2017058170W WO2018184680A1 WO 2018184680 A1 WO2018184680 A1 WO 2018184680A1 EP 2017058170 W EP2017058170 W EP 2017058170W WO 2018184680 A1 WO2018184680 A1 WO 2018184680A1
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WO
WIPO (PCT)
Prior art keywords
tooth
veneering
model
composite
layer
Prior art date
Application number
PCT/EP2017/058170
Other languages
German (de)
English (en)
Inventor
Birgit Stührenberg
Johann Philipp LOEWE
Original Assignee
Dentale Competence Germany Kg
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 Dentale Competence Germany Kg filed Critical Dentale Competence Germany Kg
Priority to PCT/EP2017/058170 priority Critical patent/WO2018184680A1/fr
Publication of WO2018184680A1 publication Critical patent/WO2018184680A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/20—Protective coatings for natural or artificial teeth, e.g. sealings, dye coatings or varnish
    • 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

Definitions

  • the invention relates to a veneering element and method for exoralen production of a veneering element for at least partial veneering of a tooth surface.
  • the veneering element described here has an inner surface which can be attached directly or indirectly to a tooth surface.
  • Veneers for teeth so-called veneers or table-top veneers are known from the prior art, which allow a partial or complete coverage of a tooth.
  • These veneers are ceramic shells for teeth that are applied to the tooth surface with a special adhesive. While the teeth are regularly covered only with veneers in the anterior area of the front, table-top veneers are used to achieve at least temporary, provisional overlap of the teeth for molars, to adjust the bite height to a permanent crown in the mouth is used.
  • Veneers give the visible surfaces of the teeth an optimized appearance and tooth color can also be changed individually with these veneers.
  • veneers serve to optimize the appearance of teeth in the visible area.
  • veneers especially in the area of the molars and premolars, often have the function of counteracting age-related wear and tear of the teeth and the thereby caused jaw malpositions.
  • Tooth surface is etched.
  • the veneer is treated with a special etching gel and silanized to ensure good adhesion of the composite plastic adhesive.
  • Veneers are usually made of ceramic material, such as glass ceramic, which has the advantage that generally no health complications are to be expected since the
  • Ceramic material has a very high biocompatibility. Only the preparation of the tooth to which the veneer is to be applied carries a certain health risk, in particular of chronic pulpitis (inflammation of the teeth). In order to avoid the aforementioned preparation of the tooth, sometimes so-called non-prep veneers or non-invasive veneers are used which, in contrast to conventional veneers, can also be adhesively fixed to plastic fillings, ceramic crowns or bridges.
  • a veneer for veneering plastic teeth, metal frameworks or natural teeth known.
  • the veneer or veneer described has vestibular, ie on the front, a
  • Lumineers are known, which are relatively thin, namely with a wall thickness up to 0.2 mm, running.
  • these veneers are made of a special ceramic, a leucite-reinforced glass ceramic, and compared to the known ceramic veneers expensive to manufacture and thus in the purchase.
  • such veneers are opaque, so that the natural tooth color does not shine through and these veneers often seem comparatively artificial.
  • ceramic for example, compared to plastic fillings
  • ceramic is relatively difficult and tends to crack formation or even breakage too thin-walled design, especially for prolonged use.
  • ceramic is often perceived as a foreign body due to the sensitivity of the tongue compared to the natural teeth.
  • it is regularly necessary due to the wall thicknesses required for ceramic veneers to grind them in the mouth, in particular in the region of transitions to the covered tooth, and to rework them in such a way that unpleasant transitions or gaps, in which impurities can accumulate, are avoided.
  • the invention is based on the object to provide a facing element and a method for producing a veneering element, in particular a non-prep veneering element for at least partially covering a tooth, in which the cost of production compared to conventional veneering elements is significantly reduced and to realize both the manufacturer of dental prosthesis and the patient economic benefits.
  • the veneering element to be specified should have properties which are almost identical to those of a natural tooth.
  • the Verblendelement should be designed as thin as possible and
  • the veneering element in particular veneer, should be executable in such a way that, in combination with suitable bonding material and cement, it is possible to realize a layer structure which has at least virtually identical material properties.
  • a corresponding veneering element should offer at least the same options as known veneers with regard to the at least partial veneering of a tooth and the punctual correction of undesired tooth discolorations.
  • the manufacturing process to be specified and the corresponding facing should also ensure that the
  • Verblendelement both half-cupped anterior tooth could cover, as well as a table-top veneer that almost completely covers a premolar or molars, executable.
  • a partial, namely a vestibular, buccal, pallatal, lingual and / or occlusal covering of a premolar or molar should be possible.
  • the veneering element according to the invention for the at least partial veneering of a tooth surface which has an inner surface for direct or indirect attachment to the tooth surface, is characterized in that at least one main body of the veneering element is made of a special ceramic composite which has at least one monomer via a matrix selected from the group consisting of
  • the veneering element embodied according to the invention thus has a special high-performance bioceramic composite which has physical properties which enable a preferred production and use of veneering elements produced in this way as veneers or table-top veneers. It is possible in a relatively simple manner to produce the desired shape and the color by selecting suitable special masses with demand varying amount of pigments contained in the
  • the material used according to the invention for a facing element has ceramic-like properties and a particularly high abrasion resistance.
  • the veneering element is designed such that it can be used as a so-called non-prep veneering element, which can be used without prior preparation of the tooth to be treated.
  • the composite material of the veneering element has a monomer matrix which is above the monomers
  • the veneering element has an average wall thickness which is less than 200 ⁇ m, in particular between 50 and 150 mm.
  • veneering elements are produced with an average wall thickness of 100 ⁇ .
  • the average wall thickness is in the range specified above.
  • the wall thickness can be less than 50 ⁇ partially and can also be reduced to 0 ⁇ at least in selectively selected areas, so thus in such a selectively selected area a hole within the wall of the
  • Veneering element is present.
  • a veneering element is made with such holes, if certain preparations are to be made on the tooth after attachment of the veneer element. After completion of the preparation on the tooth, the holes are filled in the usual way in the mouth. This is also due to the used composite material possible because this attaches very well to the subsequently introduced filler.
  • a special embodiment of the invention provides that a veneering element according to the invention has, at least in some areas, a wall thickness of up to 400 ⁇ m. Due to the used composite material for the production of a
  • Veneering element it is thus possible to provide a veneer or table-top veneer, the wall thickness varies in regions comparatively strong, for example, 0 ⁇ in a first range and 400 ⁇ in a second range. This is possible without the risk of cracking or breakage of the veneer element.
  • veneering element according to the invention has natural appearance, its longevity combined with high dimensional stability and its low plaque affinity. Furthermore, such veneering elements, which are virtually indistinguishable from natural teeth by the patient, can be polished very well. For this reason, veneering elements designed according to the invention can be used in a particularly advantageous manner as non-prep veneering elements. A prior preparation of the tooth before placing the element is therefore not mandatory.
  • Veneering element exists.
  • the proportion of the filler used in the total weight of the veneering element is preferably 75% by weight.
  • the filler is designed as an organic filler and has a proportion of the total weight of the facing element of 52-60 wt .-%.
  • the proportion of the organic filler in the composite material used for the veneering element amounts to 57% by weight.
  • the filler has a glass filler, which has a mean particle size of 0.6 to 0.8 ⁇ m, in particular 0.7 ⁇ m.
  • the filler of the composite material used for the veneering element may contain fumed silica, often also referred to as fumed silica.
  • fumed silica often also referred to as fumed silica.
  • the mean grain size of the invention used Fumed silica preferably assumes a value of 0.035-0.045 ⁇ .
  • the fumed silica has an average particle size of 0.045 ⁇ m.
  • the veneering element in particular the composite material from which the base body is made, has nanoparticles.
  • carbon nanotubes that are added to the composite material can have a positive effect on the strength of the veneering element, in particular.
  • Veneering element in the monomer matrix further via urethane dimethacrylate.
  • further additives which assume a proportion of 0.8-1.2% by weight, in particular of 1% by weight.
  • the additives used are initiators, stabilizers and / or pigments.
  • a bonding material is at least partially located on the inner surface of the veneer element. Preference is given here to a light-curing one-component primer and bonding system that does not require additional
  • connection is when the activator has a mixture of ethanol and water, methacrylate and a photoinitiator.
  • the bonding material is made of ethanol-based and hydrophilic.
  • the bonding material comprises bisphenol A diglycidyl methacrylate (bis-GMA), uretanedimethacrylate and 1,4-butanediol dimethacrylate.
  • bis-GMA bisphenol A diglycidyl methacrylate
  • uretanedimethacrylate 1,4-butanediol dimethacrylate
  • fumed silica often referred to as fumed silica, and / or silanized glass powder.
  • Further additives are preferably a photoinitiator, in particular a photoactivator, a UV photoinitiator as light stabilizer and / or at least one stabilizer selected from the group consisting of iron oxide pigments, titanium dioxide pigments and CU phthalocyaninpigment provided.
  • a photoinitiator in particular a photoactivator, a UV photoinitiator as light stabilizer and / or at least one stabilizer selected from the group consisting of iron oxide pigments, titanium dioxide pigments and CU phthalocyaninpigment provided.
  • the luting cement is fluorescent and / or radiopaque. It is particularly advantageous if the applied to the bonding material and thus indirectly on the facing element
  • Luting cement is also made on a composite basis.
  • the advantage of using a dual-curing luting cement is, above all, that no mixing of the cement is required and curing does not require irradiation with light, but in this way is certainly to be accelerated. If the luting cement used is bis-GMA (bisphenol glycidyl methacrylate), this is still advantageous due to the optimized biocompatibility.
  • bis-GMA bisphenol glycidyl methacrylate
  • a fixing cement is applied to the bonding material and thus at least indirectly to the facing element, which has a Momomermatrix.
  • the monomer matrix used for the luting cement has diurethane dimethacrylate and / or 1,4
  • Butanediol dimethacrylate wherein these two monomers are present in a particularly advantageous manner together in the monomer matrix.
  • a veneering element which can preferably be fastened as a non-prep veneering element on an unprepared tooth and which, due to the use of a very special composite material, permits a particularly thin-walled design.
  • veneering elements can be made so thin, namely with an average wall thickness which is less than 200 ⁇ m, so that they can be used in a special way for use as veneers for covering anterior teeth and / or as table surfaces.
  • Top veneers are suitable for covering premolars and molars.
  • the Inventive veneering element which does not necessarily require a complicated preparation of the tooth to be treated in the mouth and which further has a surface corresponding to the natural tooth, is mimicked in a special way the cutting mass of a natural tooth.
  • the veneering element is due to the used
  • the color of a veneering element designed according to the invention is variable and can be adapted to the needs of the patient as needed. According to a particular embodiment of the veneering element according to the invention this is at least made almost transparent.
  • the degree to which the natural tooth shines through the veneering element is variable and can be adjusted by admixing suitable pigments.
  • a particularly suitable layer structure for at least partial covering of a tooth can be provided by using a particularly suitable bonding material as well as a cement suitable for special purposes according to the preceding description.
  • the specified combination of a veneer element with a bonding material and a fastening element makes it possible to provide a layer structure which has at least almost uniform uniform material properties.
  • additives in particular the pigments of the facing element on the one hand and the fixing cement on the other hand
  • the luting cement can be adjusted from opaque to translucent by adding suitable additives and selecting the amount with regard to its optical properties.
  • the invention also relates to a process for producing a
  • a translucent facing shell as a function of the desired tooth surface contour, wherein the facing shell is designed such that it only partially covers a surface of the model of the tooth to be treated and at least partially has a distance to the model surface in the overlapping area
  • a model in particular a plaster model, of the tooth to be treated is produced.
  • this is done on the basis of data generated by means of an intraoral scan of the tooth to be treated.
  • These data can then be made for machine fabrication of the model, either by material removing techniques such as milling, or by material applying methods such as 3D printing.
  • An essential element for the method according to the invention for producing a facing element, in particular a veneer, is the facing shell.
  • the facing shell In the manufacture of the facing shell, it is of great importance that it is shaped in such a way that that later a suitable, possibly needs-varying distance between
  • Forming shell and model is formed, in which the composite is during its curing. Essentially two methods are available for the production of such an attachment shell. According to a first particularly suitable alternative, the
  • Attachment shell produced by the following steps:
  • a polymer film is used.
  • the polymer film is first cut in a suitable manner, in order then finally to be filled with the still soft composite.
  • a polymer film as an attachment shell offers in this
  • the exposure parameters in particular the wavelength, intensity and / or duration of the exposure, are set such that the composite is completely through-hardened.
  • an exorale post-processing of the composite or of the veneering element produced from a special high-performance composite takes place.
  • the cured composite is dyed, in particular painted.
  • An adaptation of the veneering element to the natural tooth color makes sense here. In combination with this it is conceivable already to choose the ones used for the facing element
  • the veneer element embodied according to the invention or produced by the method according to the invention is particularly suitable for the restoration of teeth in the anterior and posterior regions, in particular for permanent shells on the posterior teeth, occlusally, and for the anterior teeth, vestibularly to improve the tooth position aesthetically and functionally and / or to repair damage to the teeth.
  • Figure 1 Schematically represented flow of a specific embodiment of
  • FIG. 2 sectional view of a facing element according to the invention
  • FIG. 3 Layer structure consisting of a product produced according to the invention
  • Veneering element a layer of bonding material and a layer of luting cement.
  • FIG. 1 is a schematic representation of the different steps for producing a veneering element, in particular a veneer, in part
  • step B a model of the tooth to be treated is produced, wherein the model represents at least the adjacent teeth, but usually also the entire dentition after the preparation of the teeth to be treated by the dentist.
  • the model is typically a gypsum model made on the basis of an impression of the jaw and the opposing jaw made in an upstream process step A or taking into account data generated by means of an intraoral scan.
  • step C the desired tooth situation is waxed onto the model.
  • a wax layer is applied to the model that corresponds to the desired state of the tooth to be treated in terms of size, shape and surface structure.
  • a layer of an at least partially translucent silicone is then applied to this wax layer in a step D.
  • step E the facing shell formed of the silicone material is cured, in particular light-cured and removed in the cured state of the wax layer.
  • step F the wax layer is removed from the model. If now the attachment shell would be placed onto the model without further steps, then there would be a cavity between the attachment shell and the model. The size and shape of this cavity corresponds to the shape, which should eventually accept the veneer element to be produced.
  • step G the facing shell is first filled with a high-performance composite, which preferably has the substance composition which will be explained in more detail below.
  • step H the facing shell is placed and pressed together with the still pasty high-performance composite at the space provided for this purpose on the model and then followed the light curing of the composite, wherein the UV radiation passes through the facing shell.
  • post-processing of the cured composite or the veneering element in particular by polishing in step I and / or dyeing in step J, can take place after removal of the facing shell.
  • polymer films can also be used in a suitable manner. These are first cut to the desired shape, then filled with high-performance composite and placed in the filled state on the tooth to be treated. This is followed, in turn, by light curing of the composite by the at least UV-transparent polymer film and removal of the film.
  • Manufacturing steps can also be performed directly in the mouth of the patient.
  • a treating dentist first prepares the relevant tooth, then produces a suitable shaped foil blank as a facing shell, fills this facing shell with a high-performance composite according to the invention and finally places the filled facing shell on the tooth to be treated and the final process steps, in particular light curing of the composite directly in the mouth.
  • the special manufacturing process which is a hardened
  • FIG. 2 shows a vestibular-oral cross-section of a veneering element 1 designed according to the invention.
  • the facing element 1 in this case has a visible surface 2 and an inner surface 3, which is fastened by means of a bonding material and an adhesive or a fixing cement on the surface of the tooth to be treated.
  • the veneering element 1 shown is characterized in particular by the fact that it is made of a special bioceramic high-performance composite and a medium
  • Wall thickness of 100 ⁇ has.
  • Verblendettis 1 which lies after attachment of the element 1 on the tooth to be treated in the region of the gum, the facing element 1 is designed thin-walled expiring. After the veneer element has been fastened to the tooth to be treated, a veneering of the veneer element 1 in the mouth by the dentist is possible without problems.
  • the lower region 5 of the veneer element 1 is designed in the form of a hook, which completely surrounds the cutting edge of the tooth to be treated.
  • an after treatment by the dentist is possible, for example in the edge region 6 of the veneering element 1, without the risk of damaging the veneering element 1.
  • the veneering element embodied according to the invention is produced from a composite material which has a monomer matrix which is above diurethane dimethacrylate,
  • inorganic fillers with fillers comprising a glass filler having an average particle size of 0.7 ⁇ m and pyrogenic silicon dioxide (pyrogenic silica) having a mean particle size of 0.04 ⁇ m.
  • additives such as initiators, stabilizers and
  • Pigments for coloring in the facing element 1 included.
  • the high-performance composite used for the veneering element 1 makes it possible to provide a particularly resistant, thin-walled veneering element 1 similar to the natural tooth.
  • FIG. 3 shows a layer structure 7 which comprises a facing element 1 according to FIG. 3
  • a bonding material layer 9 and a luting cement layer 8 has.
  • the illustrated layer structure is intended to cover an unprepared anterior tooth in the field of vision.
  • the bonding material layer 9 comprises bisphenol A diglycidyl methacrylate (Bis-GMA), urethane dimethacrylate and 1,4-butanediol dimethacrylate. Furthermore, fumed silica, silanized glass powder and, as further additives, a photoinitiator as photoactivator, a UV photoinitiator as light stabilizer and iron oxide pigments,
  • the bonding material layer 9 constitutes an intermediate layer between the veneering element 1 and the fixing cement layer 8 applied to the bonding material layer.
  • the luting cement layer 8 has a monomer matrix which
  • Diurethane dimethacrylate and 1,4 butanediol dimethacrylate It is essential to the layer structure 7 shown in FIG. 2 that a chemical composite is created which, although it is composed of different layers or components, has virtually homogeneous properties.
  • Verblendettis 1 applied attachment cement 8 is a dual-curing luting cement.
  • the composite-based fixing cement 8 is radiopaque.
  • the advantage of using a dual-curing luting cement is above all that no mixing of the cement is required and curing takes place both without light, but is accelerated by additional UV irradiation.
  • the luting cement 7 used is free of bis-GMA (bisphenol glycidyl methacrylate) and therefore has optimized biocompatibility.
  • the fixing cement 8 shown in FIG. 3 has the following physical properties.
  • the veneering element 1 is again produced from a high-performance bioceramic composite, as has already been described in connection with FIG.
  • the idea essential to the invention consists in providing a veneering element (veneer or top-table veneer) made of a special high-performance bioceramic composite.
  • a veneering element vendor or top-table veneer
  • This special high-performance composite makes it possible in a surprising manner to provide veneers which, on the one hand, are made particularly thin and, on the other hand, are particularly resistant, in particular abrasion-resistant.
  • High performance composite veneering elements can be adapted in a relatively simple manner to the patient-specific requirements in terms of shape, color and color distribution and do not necessarily require a preparation of the tooth to be treated before application of the veneer can also be post-treated by the dentist after the attachment to the tooth to be treated become.
  • a preparation of the tooth to be treated before application of the veneer can also be post-treated by the dentist after the attachment to the tooth to be treated become.
  • Manufacturing process veneering elements can be made very effective and at the same time with very high quality.

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Plastic & Reconstructive Surgery (AREA)
  • Dental Preparations (AREA)

Abstract

L'invention concerne un élément de facette (1), un procédé pour la fabrication d'un élément de facette (1) ainsi qu'une structure à couches (7) présentant l'élément à facette pour le revêtement au moins partiel d'une surface dentaire, qui présente une surface interne (3) pour la fixation directe ou indirecte à la surface de la dent. La solution technique décrite se caractérise en ce qu'on fabrique au moins un corps de base en un composite, qui dispose, via une matrice monomère, qui présente au moins un monomère choisi dans le groupe constitué par le diméthacrylate de diuréthane, le diméthacrylate de butanediol et le bisméthacrylate d'isopropylidène-bis[2(3)-hydroxy-3(2)-(4-phénoxy)propyle], d'une charge en verre silanisé et de dioxyde de silicium pyrogène.
PCT/EP2017/058170 2017-04-05 2017-04-05 Élément de facette pour une dent ainsi que procédé pour la fabrication de l'élément de facette WO2018184680A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/058170 WO2018184680A1 (fr) 2017-04-05 2017-04-05 Élément de facette pour une dent ainsi que procédé pour la fabrication de l'élément de facette

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Application Number Priority Date Filing Date Title
PCT/EP2017/058170 WO2018184680A1 (fr) 2017-04-05 2017-04-05 Élément de facette pour une dent ainsi que procédé pour la fabrication de l'élément de facette

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WO2018184680A1 true WO2018184680A1 (fr) 2018-10-11

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD242170A1 (de) 1985-11-04 1987-01-21 Univ Schiller Jena Verblendschale
US20050124715A1 (en) * 2003-12-03 2005-06-09 Cohen Gordon M. Dental compositions containing liquid and other elastomers
DE102013007894A1 (de) * 2013-05-08 2014-11-13 Heraeus Kulzer Gmbh Langlebiges Dentalmaterial mit verbesserten transparenten Eigenschaften
EP2987480A1 (fr) * 2014-08-19 2016-02-24 Ivoclar Vivadent AG Composite dentaire durcissant à la lumière présentant une opacité croissante

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD242170A1 (de) 1985-11-04 1987-01-21 Univ Schiller Jena Verblendschale
US20050124715A1 (en) * 2003-12-03 2005-06-09 Cohen Gordon M. Dental compositions containing liquid and other elastomers
DE102013007894A1 (de) * 2013-05-08 2014-11-13 Heraeus Kulzer Gmbh Langlebiges Dentalmaterial mit verbesserten transparenten Eigenschaften
EP2987480A1 (fr) * 2014-08-19 2016-02-24 Ivoclar Vivadent AG Composite dentaire durcissant à la lumière présentant une opacité croissante

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