WO2012126935A2 - Kit and preform for producing a dental product - Google Patents

Abstract

The invention relates to a kit for producing a dental product, comprising an impression tray (1, 20), which has a bottom (2, 21) adapted to a jaw shape, a preform (6, 25) arranged in or on the impression tray (1, 20) and adapted to a jaw shape at least in some sections for producing the dental product, the preform consisting of a thermoplastic film that is solid at body temperature, and a plastically deformable stamping mass (7, 26) arranged in or on the impression tray (1, 20) between the bottom (2, 21) of the impression tray (1, 20) and the preform (6, 25) at least in some sections. An element (8, 10, 27) that can collapse under pressure is arranged between the bottom of the impression tray (1, 20) and the stamping mass (7, 26) at least in some areas. The invention further relates to a preform therefor.

Description

 Kit and preform for the production of a dental product

The invention relates to a kit and a preform for the production of a dental product.

In particular, an orthodontic splint, a bite template, a mini-splint splint, a splint splint, a dressing plate, a bite splint, a bite guide rail, a fluidization splint, a bleaching splint, a delivery splint, a mouthguard, a positioner, or the like are to be understood as a dental product in the sense of the present invention Drug carrier understood from a thermoplastic material. However, a dental product can also be a dental impression, ie a negative form of the dental situation, which is obtained for example in the form of a solidified thermoplastic film. From such an impression can then analogous to the classical dental impression materials by pouring with a model material, such as gypsum, a working model for the further preparation of dentures are made. The kit for producing a dental product can be an impression tray, for example a spoon constructed as described in DE 10 2008 029 765 A1, with a base adapted to a jaw shape and side walls projecting from the jaw, a preform arranged in or on the impression tray for producing the dental product and a plastically deformable stamp mass arranged at least in sections between the bottom of the impression tray and the preform in or on the impression tray. Preferably, the preform is formed by a solid at body temperature thermoplastic film and adapted at least partially a jaw shape. From DE 103 49 047 B3 a method for producing a dental rail is known, wherein an impression tray is loaded with a plastically deformable material on which a thermoplastic film is provided, which together with the plastically deformable material or separately therefrom, for example in a water bath, is heated. In this heated state, the thermoplastic film is plastically deformable and can be applied directly into the mouth of a patient for the production of the dental splint. For this purpose, the thermoplastic film is applied to the teeth and / or the gums by means of the plastically deformable material. After cooling the thermoplastic film to body temperature solidifies it and can be easily removed from the patient's mouth in this state.

This known method is based on the idea that the filled with the stamp mass and provided with the heated foil or preform impression tray for producing a customized rail (dental product) is pressed onto the jaw of the patient and thereby deforms the film so that after the cooling forms a rail that corresponds to the shape of the jaw or tooth situation as detailed as possible. In some applications, too high a required extrusion pressure is felt to be disadvantageous, which may be caused by the fact that the stamp mass between the bucket walls and the preform is enclosed as in a chamber and thus displaced stamp mass can not or only with difficulty escape. This leads in part to the fact that the preform extends in a bag-like or pocket-like manner. Mainly to be observed, for example, in an anterior, sublingual and vestibular region, in a kit used for mandibular impression. Such pockets or deformations of the preform interfere with the production of a detailed track from the film of the preform. It is an object of the present invention to provide an improved kit or preform for the manufacture of a dental product with which a dental product with high accuracy of fit can be prepared intraorally. This object is achieved according to the invention essentially by a kit according to claim 1 or a preform according to claim 15. A kit according to the invention is distinguished, for example, by the fact that an element which is collapsible under pressure is arranged at least in regions between the bottom of the impression tray and the stamping compound. The invention is thus based on the idea of providing a volume which can be compressed during the intraoral adaptation of the splint or preform and which at least partially corresponds to the volume of stamp mass displaced by the teeth and / or the jaw in the impression tray. The stamp mass does not swell out of the kit in an uncontrolled manner, and pockets that impair the accuracy of the impression are reduced.

In the following, with regard to a kit according to the invention, the term impression tray is used both for a classic tray-type impression tray with a bottom and side walls and for a plate-like carrier without side walls, for example.

The volume of the cavity formed by the collapsible element should be oriented substantially to the volume of the jaw, which in turn displaces the stamp mass. In a preferred embodiment, the volume of the cavity corresponds at most to the volume of the stamp mass to be displaced.

A kit or set is a particularly prefabricated combination of several elements. For this purpose, the kit according to the invention has an impression tray, which consists of a solid material which is at temperatures below about 110 ° C., in particular below about 150 ° C., an asterisk provided in or on the impression tray. pelmasse, which is plastically deformable at least at temperatures between 1 0 ° C and about 90 ° C, and a thermoplastic film for producing a rail-like dental product, for example, fixed at body temperature and at a temperature between body temperature and about 150 ° C, eg. between body temperature and about 100 ° C, is plastically deformable. The thermoplastic film is in this case formed with a first section adapted to the jaw shape (preform bottom), which is arranged on the side facing away from the bottom of the impression tray side of the stamp mass, and project from the edge portions (preform side walls), which can rest on the bottom of the impression tray , or - if the impression tray has side walls - at least partially abut the side walls of the impression tray overlapping or overlapping inside or outside of the impression tray.

According to a preferred embodiment, the collapsible element is formed by at least one foam insert. This is, for example, an open and / or closed-cell foam which can be irreversibly (plastically) and / or reversibly (elastically) collapsible.

The foam may have a dense surface or coating such as a skin, a foil, a gauze, etc., which is not passable to the stamp mass. As a result, it is possible to avoid creeping or diffusing the flowable stamp mass during storage in the foam. In other words, the foam insert on its side facing away from the bottom of the impression tray side is impermeable to the material of the stamp mass and / or it is separated by an intermediate layer of the stamp mass. For better removal of the stamping compound and the foam from the preform, the foam can also be covered on all sides.

As an alternative or in addition to a foam layer, the collapsible element may have at least one cavity, possibly filled with gas or air. A further tere alternative to the creation of the cavity is a collapsible sandwich structure, for example. Of horizontal and vertical grid elements. Such a compressible volume can also be formed by covering the stamp mass with a film, gauze, membrane, cover plate or the like, which is tear-proof and / or detachable, for example, attached to the spoon wall. As a further alternative or in addition to a collapsible element, a free space, preferably a vented free space, may be provided between the bottom of the impression tray and the stamp mass. This use of vacuum allows the inclusion of at least a portion of the displaced by the teeth portion of the stamp mass.

According to a preferred embodiment, the collapsible element is a space filled with air or another gas defined by the bottom of the impression tray, the preform and stamp mass, or by the bottom of the impression gap and a spacer. The spacing element may in this case be a bent shell, adapted at least in sections to a jaw shape, with two lateral limbs and a roof connecting them, i. have an approximately U-shaped cross-section, wherein the stamp mass is arranged on the roof and the legs are supported with their free ends on the bottom of the impression tray. The spacer thus acts as a placeholder and is, for example, designed as a thin-walled deep-drawn mold, which forms a gas-filled (air) cavity after placement together with the carrier spoon, which collapses later in impression taking and thereby creates space for the displaced by the dental impressions stamp mass ,

It has proved to be particularly advantageous if the material of the thermoplastic film is selected from the following group:

Ethylene vinyl acetate (EVA) copolymer with a high vinyl acetate content (Evatane ^®, Arkema or Elvax ^®, DuPont ™), ethylene / methacrylic acid (E / MAA) copolymer in which the methacrylic acid groups (partly by alkali metal ions NAT Ministry ions, Surlyn from DuPont) are neutralisert linear polyester derived from caprolactone monomer (Capa ^®, Perstorp), Ethylene-Acrylic Acid Copolymer (eg. Nucrel ^® 2806 (DuPont ™)) copolymers of ethylene and Vinyl acetate, copolymers of ethylene and methyl methacrylate, polycaprolactone, polypropylene, polyethylene, polybutenes, styrene-isoprene-styrene and styrene-butadiene-styrene copolymers, thermoplastic elastomers, amorphous polyolefins, linear thermoplastic polyurethanes, copolyesters, polyamide resins, polyamide / EVA copolymers , Polyaminoamiden based on dimer fatty acids, polyester amides, polyether amides, polyvinyl chloride, cellulose esters, such as cellulose acetate, cellulose propionate, cellulose butyrate, polylactic acid, polyhydroxy butyrate or a shape memory plastic and mixtures of said plastics. These materials, when heated sufficiently, allow plastic deformation and, upon cooling, retain some elasticity which facilitates removal from the mouth without destroying the shape of the dental product.

In a preferred embodiment, the thermoplastic material of the dental product is a blend of about 99 to about 30 weight percent, more preferably about 95 to about 70 weight percent ethylene / vinyl acetate copolymer (EVA), and about 1 to about 70 weight percent from about 5 to about 30 weight percent poly (epsilon-caprolactone) (PCL, ^Capa® ). In this case, a proportion of about 5 wt .-% PCL at about 95 wt .-% EVA and about 25 wt .-% PCL at about 75 wt .-% EVA is particularly preferred. Such blends of EVA and PCL show, with acceptable transparency, an improvement in the mechanical properties compared to pure EVA and a decrease in the gel temperatures in the rheological heating and cooling curves, which has a positive effect on the impression and wearing properties of the splint. In addition, EVA, PCL and their blends show very positive properties in the temperature-dependent rheological behavior. In the heating curve, which simulates the process of softening in a heating module, all materials are tolerated temperature of 85 ° C and above, preferably even at lower temperatures, sufficiently plastic for an impression and have only small disturbing elastic components. Alternatively, the thermoplastic material may comprise a blend or compound of about 99 to about 30 weight percent, more preferably about 95 to about 70 weight percent ethylene vinyl acetate copolymer (EVA) and about 1 to about 70 weight percent, more preferably about 5 to about 30 weight percent ethylene / acrylic acetate copolymer (E / AA). In the cooling curve so-called plateaus can be recognized in these particularly suitable materials. Despite progressive cooling, the material does not solidify as quickly as would be expected from the heating curve (hysteresis). The plasticity is maintained down to lower temperatures (eg up to about 60 ° C). In principle, it is preferred if the heating and cooling behavior of the thermoplastic material has a hysteresis effect, which on cooling exhibits plastic deformability at lower temperatures than during heating. This complies with the molding process in the rail creation, since the materials on the way out of the heating module or the like can already cool down to the patient's mouth, but then still suitable for the molding process, ie are sufficiently plastic and the lower temperature even better from Patient is accepted. At mouth temperature, ie at a safe distance of a few ° C, the materials are again solidified to such an extent that they can withstand the mechanical stress in the mouth without permanent deformation.

For good processing, it is preferred if the thermoplastic material at a temperature of about 60 ° C to about 90 ° C, in particular at about 85 ° C, is sufficiently plastic for an impression and has only small elastic components. The thermoplastic film must have sufficient thickness to produce a dental product to avoid tearing or biting of the film. On the other hand, the thermoplastic film must not be too thick, so that a rapid heating and cooling is possible. It is preferred if the thermoplastic film has a layer thickness between about 0, 1 mm and about 4 mm, in particular between about 0.5 mm and about 2.5 mm. These layer thicknesses are perceived as advantageous in terms of wearing comfort. The layer thickness of the film can also vary, for example with a greater layer thickness in the anterior region than in the posterior region.

Depending on the dental product which is to be produced by the method according to the invention, it may be advantageous if the thermoplastic material and the stamping compound can be detached from one another more easily or more severely. Thus, it is preferred for the production of a dental impression as a dental product when the stamp mass is so tacky formulated that the adhesive bond between stamp mass and thermoplastic material is greater than the withdrawal forces occurring during removal of the dental product from the patient's mouth. In development of this invention, it is preferred if the stamp mass is also formulated so sticky that the adhesive bond between stamp mass and impression tray is greater than the withdrawal forces occurring during removal of the dental product from the patient's mouth. The adhesive bond between the stamp mass and the impression mold and / or the thermoplastic rail can also be achieved with mechanical and / or chemical bonding agents.

In contrast, it is preferred in the production of a dental splint as a dental product, if only the impression tray and the stamp mass are, for example, (releasably) adherent to each other, while the thermoplastic material can be easily detached from the stamp mass and the impression tray. For Positioning a dental splint, it is further preferred if the material of the thermoplastic film and / or the stamp mass are selected and / or equipped such that at least substantially no adhesion forces are formed between the thermoplastic film and the stamp mass. The detachment of a dental mold formed from the thermoplastic film from the stamp mass can also be further facilitated by providing at least one insulating layer formed as an insulating film, insulating film and / or insulating solution between the thermoplastic film and the stamping compound. In order to avoid accidental release of the stamp mass from the impression tray, especially during removal, it is provided according to a preferred embodiment of the invention that the impression löffei and the stamp mass are releasably connected to each other by a mechanical retention and / or by an adhesive bond.

Essentially, the stamp compound serves to adapt the thermoplastic film well to the tooth situation or the gingival margin even in undercut areas. In the present case, a stamp material is understood to mean any suitable material which is sufficiently elastic or plastically deformable in order to apply and adapt the thermoplastic film to teeth. For this purpose, the stamp mass preferably has a viscosity (viscosity measurement on the rheometer Bohlin Gemini 200, method: frequency sweep, geometry: plate / plate diameter 25 mm, measuring gap: 0.5 mm, temperature: 23 ° C, shear stress: 12,500 Pa, frequency range: 0 , 01 - 100 Hz) at the beginning of the test from 500,000 Pas to 10,000 Pas, at the end of the test from 10,000 Pas to 100 Pas or a consistency (consistency measurement according to ISO 4823, 0.5 ml stamp mass with 1, 500 g loading weight, loaded for 15 seconds) of 10 mm to 35 mm, in particular 20 mm to 30 mm. The impression tray has, according to a first embodiment, the bottom and side walls projecting therefrom, ie the impression tray forms a rail or shell which is approximately U-shaped in cross-section and which is adapted at least in sections to a jaw shape approximately horseshoe-shaped. This design corresponds to conventional impression trays.

Regardless of the features mentioned above, an impression tray according to the invention may, according to an alternative embodiment, essentially have a bottom and, according to a preferred embodiment, optionally a further web (flange) protruding therefrom or a groove provided in the bottom. The impression tray thus has, for example, the shape of a disc or plate adapted to a jaw shape (with or without a web or groove), on which possibly a handle can be provided. In this embodiment of the impression tray, the preform may have a preform bottom and preform side walls projecting therefrom, which rest with their free edge either on the bottom of the carrier and / or on the web or in the groove. Preferably, the preform side walls are fastened with their free edge on the web or in the groove. This attachment can be done in particular by gluing, ultrasonic welding, locking and / or latching. In this design, after the molding has been completed, it must first be roughly cut out of the preform for separation from the remainder of the kit.

Surprisingly, it could be found that in the impression tray according to the invention without a side wall, the preform is still sufficiently stable so as not to collapse in the impression pressure and thus maintain the necessary distance to the tray bottom. Due to the missing side wall, more space is available for the impression area. This can cover a wider range of jaw shapes. It is therefore possible to use a carrier size for both the rail shaping of the upper jaw and the lower jaw. In addition, according to another embodiment, simultaneously the upper and lower jaw are made with such an impression tray.

Due to the lack of side wall stiffening and / or thickening of the preform walls may be useful. In addition, a different layer thickness of the preform on the top, i. be beneficial on the surface that receives the teeth. Furthermore, it is also possible to provide a different layer thickness of the preform walls. The layer thickness can also be different in the radius region between preform bottom and preform wall.

Due to the design of the impression tray without side wall, the heat radiation can also be done on the preform walls. This requires precise control of the heating so that on the one hand the preform walls do not completely plasticize and collapse and on the other hand a slight inclination of the preform walls towards the jaw can occur, thus reducing the stretch of the preform material so that it does not become too thin or tear down.

In order to allow any air to escape from the collapsible element during the formation of a rail or the like from the preform, preferably through-openings are provided in the bottom and / or at least one of the optionally provided side walls of the impression tray.

The kit according to the invention can be handled particularly easily if the impression tray, the stamping material and the thermoplastic material or the dental product formed therefrom are taken together as a unit from the patient's mouth. In some applications, however, it may also be advantageous to initially remove only the impression tray and / or the stamp mass, while at least the thermoplastic material still remains for further adaptation and / or curing in the patient's mouth. If the thermoplastic film is pulled with its edge portions inside or outside over the side walls of the impression tray as described above, an unintentional leakage of stamping material from the impression tray can be avoided. If the thermoplastic film with a tight fit, ie essentially without play, inside or outside rests on the impression tray, the thermoplastic film warps (shrinks) during heating not or at most slightly. Preferably, the preform side wall is designed so that at least partially the preform protrudes with the preform bottom in the direction of the spoon bottom in the height above the edge of the side walls of the spoon, whereby a particularly good Anformung to the tooth surface is possible just in the anterior region.

Regardless of the features described above, the invention relates to a preform for producing a dental product. The preform consists of an at least partially adapted to a jaw shape and solid at body temperature thermoplastic film having a preform and this projecting preform side walls and is at least partially filled with a plastically deformable stamp mass. According to the invention, means for covering or releasably securing the stamp mass are provided in the preform. As a result, for example, a space between the spoon bottom and stamp mass can be created, in which the stamp mass can escape. Such a detachable or tearable cover already filled in the thermoplastic preform stamp mass has the advantage that you can offer the pre-filled preform separately from the carrier spoon and you can work with reusable carrier spoons.

In a further development of this inventive concept, the means for releasably securing the stamp mass are arranged such that the preform side walls on the side facing away from the preform bottom at least in sections on the Stamping mass and / or the means for releasably securing the stamp mass protrude.

In principle, the preform side walls can be of different heights. Either the wall height extends to the floor or roof of the carrier tray and rests there, or the wall height ends in front of the floor or roof of the carrier tray, e.g. at half height, and is locked there with the spoon wall or fixed. In this embodiment, the locking / fixing has two functions: First, it fixes the filled preform spaced to the bottom of the spoon, thus creating a cavity. On the other hand, the preform filled with stamp mass is connected to the carrier spoon in such a way that unintentional falling out upon introduction into the mouth is avoided. In order to avoid falling out in the version with wall heights to the bottom or roof of the carrier spoon, the filled preform also about z. B. tabs that engage through corresponding openings in the bottom or the roof of the spoon, are locked. The detents can be circumferentially attached to the bottom or roof of the carrier spoon or segmented. Individual segments may also be attached to the retromolar / posterior end. With a corresponding design at the rear end, creeping out of the stamp mass during storage can be additionally avoided. The tab can z. B. just in this area surround the entire rear edge. In support of this cushioning effect, other constructive features may be present on the carrier tray, such as e.g. a final bead, interacting with the tab of the preform. The invention will be explained in more detail by means of embodiments and with reference to the drawings.

They show schematically: 1 is a plan view of an unfilled impression tray according to a first embodiment,

Fig. 2 in cross section along the line A-A in Figure 1 a kit according to a first

 Embodiment of the invention,

Fig. 3 in cross-section along the line A-A in Figure 1 a kit according to a second embodiment of the invention, Fig. 4 in cross section along the line A-A in Figure 1 a kit according to a third

 Embodiment of the invention,

5 shows in cross section a filled preform according to a further embodiment of the invention,

6 is a perspective view of another unfilled impression tray according to the invention,

Fig. 7 in exploded view, the components of an inventive

 Lower jaw kits according to a fourth embodiment,

8 is a partially sectioned perspective view of the kit of Figure 7,

9 is a sectional view of a kit according to the invention according to a fifth embodiment,

10 is a perspective view of an inventive kit according to a sixth

embodiment, 1 1 in plan view a carrier spoon according to the invention according to a seventh embodiment, and

Fig. 12a-f in plan view of the invention carrier spoon according to further embodiments.

In Figures 1 to 4, an impression tray 1 is shown, for example. A conventional impression tray for producing a denture impression with a thickness z. B. of 0.5 mm, 0.8 mm, 1, 0 mm or 1, 5 mm corresponds, from which a plaster model can be created. The impression tray 1 may be made of metal or preferably of a plastic which is stiff and essentially not manually deformable, at least at temperatures below 95 ° C., preferably also at temperatures below 120 ° C. If the impression tray 1 is dimensionally stable even at temperatures below 140 ° C, it can be sterilized in an autoclave. The impression tray 1 has a bottom 2, which is modeled on the contour of a bit in the shape of a horseshoe, and has side walls 3, 4 extending upwards from the bottom in the figures, so that the impression tray 1 can be seen in FIGS. 2 and 3 , Has an approximately U-shaped cross-section. Next, the spoon is provided with a handle 5.

To produce a dental splint or other dental product from a preform 6 (thermoplastic film), as shown in FIGS. 2 and 3, it is filled with a kneadable, plastically deformable material as a stamping compound 7 and possibly foam and introduced into the impression tray 1. The stamp mass 7 preferably has a viscosity (viscosity measurement on the rheometer Bohlin Gemini 200, method: frequency sweep, geometry: plate / plate diameter 25 mm, measuring gap: 0.5 mm, temperature: 23 ° C, shear stress specification: 12,500 Pa, frequency range: 0 , 01 - 100 Hz) at the beginning of the test from 500,000 Pas to 10,000 Pas, at the end of the test from 10,000 Pas to 100 Pas or a consistency (consistency measurement according to ISO 4823, 0.5 ml stamping weight with 1 500 g load weight, loaded for 15 seconds) from 10 mm to 35 mm, in particular 20 mm to 30 mm. This thermoplastic film has a layer thickness between 0, 1 mm and about 4 mm, for example. About 0.5 mm to about 2 mm. At body temperature and at room temperature, the thermoplastic film is solid. Only at temperatures that are above body temperature, ie between 40 ° C and 90 ° C or up to about 120 ° C, the thermoplastic film is plastically deformable. The kneadable material of the stamp mass 7 undergoes no or only slight changes in viscosity at these temperatures or may have a tougher consistency in the initial state at room temperature and obtain a less viscous consistency only at the higher processing temperatures.

Between the spoon bottom 2 and the stamp mass 7, a foam insert 8 is provided in the embodiment of FIG. 2, which can be compressed by the pressure of the stamp mass 7 during the penetration of the teeth into the spoon 1 during the impression. In the illustrated embodiment, a thin film 9 is provided between the foam insert 8 and the stamp mass 7, which prevents the stamp mass 7 can penetrate into the foam 8. The film 9 can also tear or tear during the impression. The foam insert 8 consists, for example, of a collapsible rigid foam. Alternatively, for example, an elastically deformable flexible foam can be used.

In the embodiment of Figure 3, the stamp mass 7 is held by a film or cover plate 9 within the preform 6, wherein between the film 9 and the bottom 2 of the spoon 1, an air cushion 10 remains, as described above with respect to the foam 8 is collapsible during the impression. In Figure 3, the length of the preform side walls is so gewält that they extend to the spoon bottom 2. Alternatively, however, the preform side walls may be formed shorter than the side walls 3, 4 of the spoon. FIG. 4 shows how such shorter preform sidewalls are connected to the side walls. walls 3, 4 of the spoon can be connected. In principle, other connection possibilities are also suitable, for example by means of projections projecting radially outwards of the preform side walls, which engage in corresponding recesses in the side walls 3, 4 of the spoon. As can be seen from FIG. 5, the preform 6 can also be filled with the stamp mass 7 as a unit separate from the spoon 1, the stamp mass 7 in turn being held in the preform by means of suitable locking elements, for example the foil 9. Similarly, a preform 6 pre-filled with the stamp compound 7 and a foam 8 or the like can also form a kit or set that can be used with a separate impression tray 1 for producing a rail, etc.

The impression tray 1 may be formed as a perforated spoon with openings 1 1 at least in the bottom 2. These openings can be designed so that they allow the escape of the stamp mass 7 such that excess stamp mass can escape from the impression tray 1 and that forms a mechanical connection between the impression tray 1 and the stamp mass 7. In particular, however, the passage openings 1 1 also allow the escape of air when a collapsible element, such as the foam 8 or the air layer 10 is compressed during the impression.

The thermoplastic film of the preform 6 is heated to a processing temperature for producing a dental splint, which may for example be between 40 ° C and 90 ° C. In order to achieve a defined heating of the thermoplastic film, without heating the stamp mass 7 or the impression tray 1 strongly, the film can be specifically heated, in particular by only the film (directed) heat energy is supplied.

As soon as the preform 6 has reached its processing temperature and is sufficiently plastically deformable, the film can be applied directly in the mouth of a patient. For this purpose, the thermoplastic film together with the Ab- pressure spoon 1 and the stamp mass 7 applied to a row of teeth or individual teeth. When the rigid impression tray 1 filled with kneadable material is pressed against the row of teeth, the thermoplastic film deforms according to the contours of the teeth, the stamping compound 7 exerting a uniform pressure on the thermoplastic film on all sides. At the same time by the pressure of the stamp mass 7 of the foam 8 and the air layer 10 is compressed or from the spoon 1, for example. Through the openings 1 1, displaced, so that the stamp mass 7 is not or hardly on the side facing away from the spoon bottom of the Impression tray swells or bags in preform 6 forms.

The impression tray 1 can then be removed together with the stamp mass 7 and the dental splint from the mouth. Alternatively, first the impression tray 1 can be removed from the mouth, while the dental splint remains with the stamp mass 7 in the mouth and is removed separately. After any necessary trimming or other post-processing can be created directly in the patient's mouth as orthodontic splint, bite block, mini slide rail, crunching rail, bandage, bite splint, bite guide rail, Fluoridierungsschiene, bleaching splint, transfer rail, (sports) mouthguard, positioner, medicament carrier or the like. be used.

FIGS. 6 to 8 show a further embodiment of an impression tray 20 according to the invention and of a kit with such an impression tray. In comparison with the embodiment according to FIG. 1, it is noticeable that the impression tray 20 consists essentially only of a base 21 and a handle 22, ie it has no side walls. However, a flange-like web 23 or a groove is provided in the vicinity of the peripheral edges of the bottom. As can also be seen from the illustration of FIG. 8, this web 23 is set back relative to the edge of the bottom 21, whereby a bearing surface for the preform is formed. In the area in which the handle 22 connects to the bottom 21 is between the web 23 and the thicker compared to the bottom 21 handle 22 a groove 24 is formed. The lower jaw carrier spoon 20 shown in Fig. 6, in this embodiment, has a step in the transition from the anterior teeth to the posterior teeth for jaw anatomical reasons.

FIG. 7 shows in an exploded view the components of a kit according to the invention for the lower jaw using the impression tray 20. In addition to a preform 25 and a stamp mass 26, a spacing element 27 is provided which serves as a placeholder. As can also be seen from FIG. 8, the spacer element 27, which is designed as an arcuately curved shell or rail which is open at the bottom in FIG. 7, is arranged between the base 21 and the stamp mass 26. The spacer element 27 is in this embodiment, a thin-walled deep-drawn mold, which forms after placing together with the impression tray 20 an air- or gas-filled cavity, which creates later in impression and after collapse of the placeholder space for the displaced by the dental impressions stamp mass 26.

Since the impression tray 20 (with the exception of the web 23) has no actual side walls, the side walls of the preform 25 extend to the bottom 21st The free edge of the preform 25 is located outside of the web 23 on the floor 21 on or in the groove 24. The preform 25 is fixed to the web 23, in the groove 24 and / or on the bottom 21, for example. By a Bonding, ultrasonic welding, locking and / or locking. The preform 25 is thus firmly connected to the impression tray 20. The spacer element 27 can also rest on the bottom 21 with its free edge (lower in FIG. 8), so that the spacer element 27 supports the stamp mass 26, if this is not already held in the preform 25 in another suitable manner as described above. While FIGS. 6 to 8 show a kit suitable for the lower jaw, a similar embodiment of a kit is shown in sectional view in FIG. 9, which can be used for rail shaping of the upper jaw as well as of the lower jaw. The section in the posterior region shows a 3 mm shorter inner wall of the preform 25 in comparison to the outer wall. This results in an obliquely inwardly sloping upper preform level. In the area of the inner wall, the roof of the roof is located in the upper jaw. By shortening the inner wall can be molded in this way even in the region of the roof of the palate, which would be in the way with unbacked wall, without much resistance. When using this complete set for the rail shaping on the lower jaw, this different wall height and resulting slope is not a hindrance.

FIGS. 10 and 11 show a further embodiment of a kit or carrier in which the upper and lower jaw forming is carried out simultaneously with a carrier (impression tray 20). In this embodiment, both sides of the impression tray 20 are, for example, provided with a web 23 and a groove 24, as shown in Figure 6, so that on both sides in each case a preform 25, a stamp mass 26 and a spacer 27 can be provided. The configuration of the preform, the stamp mass and / or the spacer can be adapted to either the lower jaw and the upper jaw differently or both sides are designed the same. For the latter alternative, both sides are preferably designed as a combination carrier spoon, with the alternatively both upper jaw and lower jaw molding can be made. As shown in FIG. 11, a combination carrier spoon unites the outer round upper jaw contour and the inner V-shaped lower jaw contour into a bulbous contour of a carrier spoon, which can be used either for the upper jaw or for the lower jaw.

The differences between the jaw shapes and sizes can be taken into account by means of different impression trays 20 in order to achieve optimal results. to achieve. FIGS. 12a to 12f show a carrier spoon according to the invention in a plan view, wherein FIGS. 12a to 12c each represent a carrier for a lower jaw and FIGS. 12d to 12f respectively represent a carrier for an upper jaw. From this overview of the carrier trays for the lower jaw and upper jaw, each in three jaw sizes, it becomes clear that the basic contour of the lower jaw carrier spoon is V-shaped or angular, while the basic contour of the upper jaw carrier spoon is somewhat rounder or bulbous. The upper jaw carrier spoon in this embodiment has no step between the anterior and posterior regions, ie, it is flat. The size of the impression tray decreases in Figures 12a to 12c and 12d to 12f from left to right starting with a large spoon, on a middle spoon to a small spoon.

Reference numerals:

1 impression tray

 2 floor

 3, 4 side walls

 5 handle

 6 preform (thermoplastic film)

 7 stamp mass

 8 foam (collapsible element)

 9 intermediate layer (foil)

 10 air cushion / cavity (collapsible element)

1 1 passage opening

20 impression spoons (carrier)

 21 floor

 22 handle

23 footbridge

 24 groove

 25 preform (thermoplastic film)

 26 stamp mass

 27 spacer (placeholder)

Claims

Claims: 1 . Kit for producing a dental product with an impression tray (1, 20) having a bottom (2, 21) adapted to a jaw shape, with a preform (6, 6) arranged in or on the impression tray (1, 20) and adapted at least in sections to a jaw shape 25) for the production of the dental product, which is formed by a solid at body temperature thermoplastic film, and with a in or on the impression tray (1, 20) at least partially between the bottom (2, 21) of the impression tray (1, 20) and the Preform (6, 25) arranged, plastically deformable stamp mass (7, 26), characterized in that between the bottom of the impression tray (1, 20) and the stamp mass (7, 26) at least partially a collapsible under pressure element (8, 10 , 27) is arranged. 2. Kit according to claim 1, characterized in that the collapsible element has at least one foam insert (8). 3. Kit according to claim 2, characterized in that the foam insert (8) on its the bottom (2) of the impression tray (1) facing away from the side Material of the stamp mass (7) is impermeable and / or by an intermediate layer (9) of the stamp mass (7) is separated. 4. Kit according to claim 1, characterized in that the collapsible element has at least one, possibly filled with gas or air, cavity (10). 5. Kit according to claim 4, characterized in that the cavity (10) is a space filled with air through the bottom (2) of the impression tray (1), the Preform (6) and the stamp mass (7) or the bottom (21) of the impression tray (20) and a spacer element (27) is defined. 6. Kit according to claim 5, characterized in that the Distanzsele- element (27) at least partially adapted to a jaw shape, curved shell with two lateral legs and a roof connecting them, wherein the stamp mass (26) is arranged on the roof and the legs are supported with their free ends on the bottom (21) of the impression tray (20). 7. Kit according to one of the preceding claims, characterized in that the impression tray (1, 20) with the preform (6, 25) and / or the stamp mass (7, 26) by a mechanical retention and / or by an adhesive bond and / or by chemical bonding agents, preferably releasably connected. Kit according to any one of the preceding claims, characterized in that the thermoplastic film of the preform (6, 25) consists of a material chosen from the following group: ethylene-acrylic acid copolymer, copolymers of ethylene and vinyl acetate, copolymers of ethylene and methyl methacrylate, polycaprolactone, polypropylene, polyethylene, polybutenes, styrene-isoprene-styrene and styrene-butadiene-styrene copolymers, thermoplastic elastomers, amorphous polyolefins, linear thermoplastic polyurethanes, copolyesters, polyamide resins, polyamide / EVA copolymers, polyaminoamides Base of dimer fatty acids, polyester amides, polyether amides, polyvinyl chloride, cellulose esters, such as cellulose acetate, cellulose propionate, cellulose butyrate, polylactic acid, polyhydroxybutyrates or a shape memory plastic and mixtures of the plastics mentioned. 9. Kit according to one of the preceding claims, characterized in that the thermoplastic film of the preform (6, 25) has a layer thickness between about 0, 1 mm and about 4 mm, in particular between about 0.5 mm and about 2, 5 mm, having. 10. Kit according to one of the preceding claims, characterized in that the impression tray (1, 20) in its bottom (2, 21) and / or at least one of the optionally provided side walls (3, 4) at least one passage opening (1 1) having. 1 1. Kit according to one of the preceding claims, characterized in that the impression tray (1) has a bottom (2) and side walls (3, 4) projecting therefrom, and in that the preform (6) has a preform bottom and preform side walls projecting therefrom on the floor (2) and / or a shoulder of the side walls (3, 4) of the impression tray (1) rest. 12. Kit according to one of claims 1 to 10, characterized in that the impression tray (20) has a bottom (21) and a web projecting from this web (23) and / or provided in this groove (24), and that the Preform (25) has a Vorformboden and projecting from this preform side walls, which abut with its free edge on the web (23) and / or in the groove (24). 13. Kit according to claim 12, characterized in that the preform side walls are fastened with their free edge on the web (23) and / or in the groove (24). 14. Kit according to one of the preceding claims, characterized in that the stamp mass (7, 26) has a viscosity (viscosity measurement at the rheometer Bohlin Gemini 200, method: frequency sweep, geometry: plate / plate diameter 25 mm, measuring gap: 0.5 mm, temperature: 23 ° C, shear stress specification: 12,500 Pa, frequency range: 0.01 - 100 Hz) at the beginning of the measurement from 500,000 Pas to 10,000 Pas and at the end of the measurement from 10,000 Pas to 100 Pas or a consistency ( Consistency measurement according to ISO 4823, 0.5 ml stamping mass with 1.500 g load weight, loaded for 15 seconds) from 10 mm to 35 mm, in particular 20 mm to 30 mm. 15. preform for producing a dental product with an at least partially adapted to a jaw shape and solid at body temperature thermoplastic film having a preform and this protruding preform sidewalls and at least partially filled with a plastically deformable stamp mass (7, 26), characterized in that in the preform (6, 26) means (9, 27) are provided for releasably securing and / or covering the stamp mass (7, 26), wherein preferably the means (9) for releasably securing and / or covering the stamp mass (7, 26) are arranged such that the preform side walls on the side facing away from the preform bottom at least partially over the stamp mass (7, 26) and / or the means (9, 27) for releasably securing the stamp mass (7, 26) protrude.