WO2006007885A1

WO2006007885A1 - Matrix for delimiting the filling space in the field of dentistry and method for filling a cavity of a tooth

Info

Publication number: WO2006007885A1
Application number: PCT/EP2005/003591
Authority: WO
Inventors: Domonkos Horvath; Sebastian Horvath
Original assignee: Domonkos Horvath; Sebastian Horvath
Priority date: 2004-07-16
Filing date: 2005-04-06
Publication date: 2006-01-26

Abstract

The inventive matrix is produced, at least in areas, from a stretchable and deformable material. In order to fill a cavity (37), the matrix is placed onto this cavity whereby sealing the lateral edges (38) of the cavity (37) so that the fixing cement and filling material cannot escape when filling the cavity (37). The eliminates complicated work required for removing excessive fixing cement and filling material. When filling the cavity (37), the matrix is arched between said edges (38) according to the anatomy of the tooth, and thus imitates the original shape of the tooth with convex approximal surfaces and contact surfaces with regard to the adjacent tooth as well as the anatomical reconstruction of the marginal ridge of the tooth.

Description

Die for the Füllraumbegrenzung in the

Dentistry and method for filling a cavity of a tooth

The invention relates to a mold for the Füllraumbegrenzung in dentistry, which is to be applied to a tooth to be filled. The invention also relates to a method for filling a cavity of a tooth and a set of modeling bodies.

Dies of the type mentioned form a kind of shuttering and serve to Füllraumbegrenzung when filling cavities. An essential requirement that is placed on such matrices, is that after removal of the die as little as possible excess filler material is present, which must be removed very time-consuming. It should also make it possible to bring the tooth to the desired anatomical shape. When using the composite fillings which are generally customary today, it should in particular make it possible to make the convex approximal surfaces and the contact surfaces with the neighboring tooth anatomically correct. In particular, it should also allow an anatomical reconstruction of the edge strip (the transition of the occlusal surface to the approximal contact). This is particularly difficult because the teeth and tooth surfaces are anatomically very different.

In the prior art, very many matrices have become known, which should meet the requirements mentioned. Thus, DE 199 36 461 discloses a die, which is formed as a band, wherein a lower edge is wedge-shaped. EP 097 266 discloses a matrix band which is to be laid around the tooth to be filled in an untensioned state. The matrix band consists of a memory metal, which expands by mechanical force and after the Apply is brought by heating over the transition temperature in the tensioned position.

US 6,712,608 discloses a die formed as an asymmetrically shaped band. US 6,435,874 also discloses a tape made of an elastic material and stretchable with a tool. It has a thinned central area which can be inserted into the space between two adjacent teeth. The tape is used to apply a die or other molding to a tooth. US 3,082,531 discloses a tape-shaped die having two adhesive areas with which it is fixable to an adjacent tooth.

In the matrices mentioned, there is still the difficulty of making the convex approximal surfaces anatomically correct and at the same time substantially completely preventing the outflow of the filling material. In the known matrices, it was thus far still necessary, after filling and curing of the filling excess filler time-consuming and thus to remove at a relatively high cost.

The invention is based on the object, a die, a method as well as suitable modeling, which allow a largely surplus free filling.

The object is achieved in a first aspect of the invention in that it is stretchable and at least partially malleable. The matrix can be applied to the tooth under tension so that it seals the cavity to be filled in its edge region. When filling the cavity, the template is stretched between these edges.

Advantageously, the die can be linearly plugged by at least 10%, preferably by at least 50%, without tearing. This makes it possible for them to unevenness and irregularities of the tooth surfaces adapt. For a linear elongation of 10%, a tensile force of at most 50 N, in particular at most 20 N, should be used. Significantly larger forces are difficult for the dentist to apply in the application and can lead to undesirably high forces on the teeth.

By stretching, a very thin wall can be achieved, which replicates the anatomical external shape of the tooth. Another advantage is seen in that the inventive template

Randleistenrundungen allows and thus contribute to the anatomical reconstruction of the transition of the occlusal surface for proximal contact. The matrix can also adapt very anatomically to very different teeth and tooth surfaces. With the help of the modeling material or ceramic inlays introduced into the cavity, the matrix adopts the exact anatomical tooth form, including the contact point to the neighboring tooth, and can be overmolded with a contact material, which can be cured with light or chemically. So the cavity gets a hard wall circularly. After removal of the modeling material or inlay, it is now possible to fill the cavity with composite material without any excess on the side, or the inlay can be definitely adhesively cemented without lateral excess cement.

The excesses shift occlusally, where they can be easily removed under direct vision. The contact material can be adhesively bonded to the outer side of the die and held or not connected; In this case, after inserting the inlay or the composite, the die is pressed to the hard wall of the pressing material. The AusfHessen the filling can thus be largely prevented. After removing the die, therefore, the previously required work for aftertreatment is not necessary and thus the cost can be significantly reduced. The The matrix according to the invention thus enables a largely overflow-free filling and, at the same time, an anatomical reconstruction, also a border of the transition of the occlusal surface to the approximal contact. In a second aspect of the invention is the

Die tube formed tubular. It rests on the tooth after application to the tooth under tension. It advantageously has a circumference between 10 mm and 20 mm, so that it can be placed with slight elongation over the usual tooth sizes. It is also possible to provide a set of matrices of varying degrees. The width or height of the die is advantageously between 5 and 15 mm, so that a sufficient height of the tooth can be covered and the tooth still remains accessible.

In a further aspect of the invention, the die has a strip-shaped, linear stretchable by at least 10% plastic sheet of a length of at least 1.5 cm and a width between 5 and 15 mm. As mentioned below, such a template can be placed around a tooth and its surface adjusted. The said width in turn ensures sufficient coverage and yet good accessibility of the tooth.

According to an embodiment of the invention, the die is provided with adhesive means, which are preferably arranged so that the die can be adhered to the edges of the cavity to be filled, whereby the sealing of the cavity can be further increased. This can be more reliably avoided that when filling the tooth filling material can escape. In addition, a layer of the matrix can remain on the filling surface, thereby rendering polishing unnecessary.

According to one embodiment of the invention, it is provided that the die is made in one piece from a rubber-elastic material. The die can then, for example, as a piece of tubing or as a section of a Hose can be produced very inexpensively. For example, it can be cut off from a roll of the desired length.

Due to the relatively high elongation, a wall is reached, which is very thin in the stretched state. The thickness of the wall is then for example 5-60 microns or even less than 5 microns. A significant advantage is also that such a matrix holds on the tooth without further resources itself. The application is very simple and time-saving. In the unstretched state, the die should have a thickness of at most 100 .mu.m, in particular at most 50 microns.

According to an embodiment of the invention it is provided that it has a first and a second edge and that at least one of these edges as

Rolled edge is formed. Such a rolled edge allows a particularly simple and accurate change in length, so that the die can be made substantially in a standard length. A rolled edge also allows an ideal width tension to the sulcus.

According to one embodiment of the invention, it is provided that the matrix according to the invention is conical. This allows application of the die even with a correspondingly strong conical formation of a tooth to be filled. The matrix can be set up so that it is narrower at the top or bottom. According to one embodiment of the invention, a contact pressure means for filling the interdental space is provided. This means is preferably designed so that it can be sprayed. In addition, the agent is preferably formed as a curable plastic, in particular as an acrylate. The contact pressure can be injected with or without contact pressure in the gap.

Further advantageous features emerge from the dependent claims, the following description and the drawings. Embodiments of the invention will be explained in more detail with reference to the drawing. Show it:

1 shows schematically a plan view of teeth with an inventive interdental attached matrix

2 schematically shows a side view of the arrangement according to FIG. 1. FIG. 3 shows a schematic view of a spatial view of a die according to the invention in accordance with a variant,

FIG. 4 shows a further spatial view of a further variant of the die according to the invention,

FIG. 5 schematically shows the attachment of the die according to FIG. 3 to a tooth to be filled,

FIG. 6 shows a further view of a die according to a further variant,

FIG. 7 schematically shows the attachment of the female mold according to FIG. 3 to a tooth, wherein two cavities are sealed,

Fig. 8 - 11 sections by inventive matrices

FIG. 12 schematically shows a plan view of teeth, wherein the middle tooth has a cavity to be filled, FIG. 13 shows schematically the teeth according to FIG. 12, wherein a matrix according to the invention is applied to the middle tooth,

FIG. 13 a shows a schematic view of a tooth according to FIG. 12 with a die applied thereto, FIG.

FIG. 14 schematically shows the teeth according to FIG. 13, but after the cavity has been filled,

14a shows schematically a spatial view of the filled tooth according to FIG. 14, FIGS. 15-17 sections through further variants of the inventive die, FIG. FIG. 18 a shows a schematic side view of a tooth group, wherein the middle tooth has a cavity with a filling,

FIG. 18b schematically shows the tooth group according to FIG. 18a, wherein a matrix according to the invention according to one of the FIGS. 15 to 17 is applied to the middle tooth,

FIG. 18c schematically shows the group of teeth according to FIG. 18a, but after the filling of the cavity and applied matrix,

FIG. 19 a shows a schematic view of a tooth which has a cavity,

FIG. 19b shows the tooth according to FIG. 19a with the filling applied, FIG. 20 shows a view of a die according to a further variant,

21a-21i are schematic views of further variants of the inventive die,

FIG. 22 a shows schematically a matrix according to the invention according to a further variant with a peelable protective film,

FIG. 22b shows the die according to FIG. 22a, but with a partially removed protective film,

FIGS. 23a-23k show schematic spatial representations of further exemplary embodiments of the matrix according to the invention,

FIG. 24 is a schematic side view of a group of teeth with a matrix according to FIG. 23a on the middle tooth and pressure means below the dental equator;

FIG. 25 is a schematic view of a tooth with an artificial crown and an attached matrix according to the invention,

FIG. 26 shows schematically the rolling out of a lower rolled edge of the female part according to the invention into the sulcus, FIG. 27 shows an application tool for stretching a die according to the invention,

FIGS. 28-33 schematically show the reconstruction of a cavity with a ceramic inlay and a plastic cement or luting cement and a die,

FIG. 34 shows a further embodiment of the die, FIG.

35 shows a view of the die of FIG. 34 from above, FIG. 36 shows a detail from FIG. 35

FIG. 37 shows a first modification of the embodiment according to FIG. 34, FIG.

FIG. 38 shows a second modification of the embodiment according to FIG. 34, FIG. 39 shows a set of modeling bodies, FIG.

Fig. 40 shows an embodiment of a die with handle and

Fig. 41, the embodiment of FIG. 40 in the applied state.

Figures 3 and 4 show an inventive dies 30 and 30 ', each having a closed frame 34 in which a membrane 35 is attached or clamped. The frame 34 consists of a preferably plastically deformable material, such as plastic. It can also be made of a light-curing material. After applying the die 30 or 30 'to a tooth, the frame 34 can be fixed in shape by light. The membrane 35 is made of a relatively thin film and deformable as well as stretchable. The membrane 35 may also be elastically extensible. It is made for example of polyuretane, polyethylene or other suitable plastic (latex). Plastics as material for the membrane or film of the die are also advantageous in the embodiments described below because of their good elongation properties. The frame 34 is relatively stable, so that the die 30 and 30 'can be held on this frame 34 and brought into the desired shape. If the frame 34, as mentioned, is made of a light-curing material, it will be exposed to a desired light source after reaching the desired shape, thereby fixing this shape.

FIGS. 5 and 7 show a tooth Z with a cavity 37. The tooth Z is located between two teeth Z1 and Z2. To fill the cavity 37, the die 30 is placed around the tooth Z, similar to a cuff. By plastic deformation of the frame 34 is achieved that the membrane 35 rests against the edges of the cavity 37. It forms a taut, approximately flat wall area between the edges. From above, however, the cavity 37 is for

Introducing the filling material, not shown here open. The frame 34 is relatively flat, but preferably somewhat thicker than the membrane 35. The die 30 can therefore be inserted into comparatively narrow spaces between teeth. Since the die 30 is open, it can be applied to the tooth Z in different ways. FIG. 7 shows a tooth Z with two cavities 37. The die 30 is placed around the tooth Z such that both cavities 37 are tightly closed to the outside but accessible from above.

The frame 34 is according to Figure 4 as shown oblong square. However, embodiments are also conceivable in which the frame 34 has a different shape, for example circular according to FIG. 3, elliptical or polygonal or semicircular as in the die 30 "according to FIG. 6.

The membrane 35 is clamped in the frame 34 as mentioned. The attachment of the membrane 35 to the frame 34 can be done differently. According to FIG. 8, the membrane 35 is fastened to the frame 34 in the middle.

FIG. 9 shows a die 31, in which the membrane 35 is secured diagonally in the frame 34. The Figure 10 shows a die 32 in which the membrane 35 is secured to the frame 34 so that it is laterally and the tooth averted from the cavity. Finally, FIG. 11 shows a die 33, in which the membrane 35 faces laterally and towards the tooth. The membrane 35 can be arranged such that it is located on the side of the frame 34 facing or facing away from the cavity.

Figures 12 and 13 illustrate schematically the filling of a cavity 37 of a tooth Z by means of a die 30. The die 30 is placed on the tooth Z according to Figures 13 and 13a so that the cavity 37 is open at the top for filling, but at the bottom after outside is completed. The deformable and stretchable membrane 35 is applied to the tooth Z, that the lateral edges 38 of the cavity 37 are sealed to the outside. If filling material 36 is introduced into cavity 37 (FIG. 19b), diaphragm 35 finally bulges into the shape shown in FIGS. 14 and 14a, which essentially reproduces the original tooth shape. Since the edges 38 are laterally sealed, there results at the edges 38 a flush transition between the outside of the tooth Z and the surface 39 of the filling material 36 (FIG. 19b). In Figure 14a, the filler material 36 is cured and the die 30 can be removed. An elaborate removal of leaked filling material 36 is not required, since, as mentioned, the die 30 seals the cavity 37 during filling to the outside.

FIGS. 15, 16 and 17 show sections through dies 41 a, 41 b and 41 c having a frame 41. The frame 41 is attached, for example according to FIG. 15, to a uniformly thin membrane 43a. According to FIG. 15, a membrane 43a is fastened to this frame 41, which, for example, has a corresponding rectangular design and is likewise deformable and extensible. The frame 41 is also preferably plastically deformable and, for example, of a suitable Made of plastic. In cross section, the frame 41 may be circular or flat. The frame 41 may also be made of an elastic and in particular rubber-elastic as well as light-curing material. The frame 41 may also be stretchable.

The die 41b according to FIG. 16 has a membrane 43b which, unlike the membrane 43a, has a different thickness. As can be seen, the membrane 43b according to FIG. 16 is substantially thicker in a lower region than in an upper region. In the die 41c according to FIG. 17, a membrane 43c is provided, which is thin and moderately thin and preferably becomes continuously thicker towards the frame 41. Finally, the thickness of the membrane 43c may reach the thickness of the frame 41. The membrane 43c and the frame 41 may be made of the same material. In principle, the membrane 43c and the frame 41 may be integrally made of the same material.

Figures 18a to 18c show a preferred use of the die 41a for filling the

Cavity 37 of the tooth Z according to Figure 19a. The membrane 41a '■ is applied laterally to the tooth Z, wherein the frame 42 is closed. The arrow 40 in Figure 18b shows the direction in which filling material, not shown here, is filled from above into the cavity 37. Also in this

Case, the membrane 41a is preferably under tension at the edges of the cavity 37 and prevents lateral leakage of filler. After curing of the filler, the die 41a is pulled off the tooth Z. FIG. 18c shows the tooth Z after the filling of the cavity 37 and with a corresponding expansion of the die 43a. After removal of the die 41a, the tooth Z according to FIG. 19b is repaired. As shown in FIG. 19b, the surface 39 of the filling is flush with the surface of the tooth Z. The die 43a may have a layer, not shown here, which remains on the filling after removal of the die 43a and forms a surface where polishing is unnecessary.

Figures 21b to 21i show further band or strip-shaped matrices 49a to 49h. These each have in a strip-shaped, slightly thicker film 47a, which forms a frame, one or more membranes 48a, which is stretchable and are according to Figure 2 can be applied to the cavity of a tooth Z or are. In fig. 21b is a membrane 48a, in FIG. 21c three membranes 48 are seen. The matrices can also with a

Breakthrough 52 (see Figures 21d and 2), with which the die is attached to a tooth e.g. is attached with light-curing adhesive, as Figure 2 illustrates. Suitable adhesives are known to the person skilled in the art as so-called dental adhesives.

The die 49e according to FIG. 21e is provided centrally and that according to FIG. 21f flatly with an adhesive layer 53, which, however, does not serve for attachment here, but instead seals the membrane at the edges of a cavity. In the dies 49i and 49k according to FIGS. 22a and 22b, the adhesive layer 53 is covered with a removable protective strip 54.

FIGS. 21g, 21h and 21i show the embodiments of the matrices according to FIGS. 21b-d after an elongation.

The adhesive layer may also be formed so that it remains after removal of the membrane on the outside of the filling and forms an outer layer on its surface. At this point, then a polish is unnecessary.

Figure 20 shows a die 46 having a U-shaped frame 47 in which a membrane 48 is secured. The frame 47 is flat or round in cross section. The membrane 48 is also made of a deformable and stretchable plastic film, for example

Polyuretan produced. The frame 47 is thus open here and allows use similar to the dies 41a to 41c.

Finally, FIG. 21a shows a die 49, which has two holding parts 50 arranged at a distance from one another, between which a band-shaped or strip-shaped membrane 51 is fastened. The die 49 can be held on the holding parts 50 and applied according to Figure 1 for filling a cavity to a tooth Z. The membrane 51 is stretchable and deformable. The membrane 51, and this also applies to the other membranes mentioned above, may be formed so that it is stretchable and deformable but not fully elastic. After stretching or stretching, the membrane 1 thus no longer changes over to the original shape. The strip-shaped membrane 51 can be produced with different widths and also with different lengths. The holding members 50 may be used with the interdental attachment of the die 49 shown in FIG. Figures 23a to 23k show tubular

Matrices.

As shown in FIG. 23a, the die 1a is cylindrical and has an upper opening 5 and a lower opening 27. The upper opening 5 is formed by the edge 2, which is here designed as a rolled edge. The lower edge 3, which forms the opening 27, is also formed as a rolled edge. Between the edges 2 and 3, the die Ia is tubular or cylindrical and has a corresponding tubular or cylindrical wall 4 with an outside 6 on. The matrix Ia is formed in one piece and tubular and is formed by a thin, stretchable film or membrane, which advantageously has constant thickness. It can be manufactured as a section of a hose. The diameter d of the die Ia may be substantially smaller in the initial state than the diameter of the tooth Z. The diameter d is preferably at least 1.5 times smaller than the diameter of the tooth. When placing the die Ia on the tooth Z, this is thus radially essential and preferably stretched by a multiple. The wall 4 is correspondingly thinner during stretching. The thickness of the wall 4 is for example designed so that it has a thickness of for example 3-50 in the stretched state according to FIG. The wall 4 is thus very thin with attached die Ia. Due to the thin wall 4 and the relatively high elastic stress, the die Ia the

Exactly simulate the external shape of the tooth Z or the crown K. The matrix Ia may be formed so that it is stretchable, but not elastic. The pressing force of the die Ia is such that it is greater than the force of the filling material on the die Ia and thus prevents the lateral leakage of the filling material or fixing cement. This is the case with all matrices mentioned.

The rolling edges 2 and 3 are preferably formed as rolling edges, i. they can be unrolled and rolled up. This makes it possible to substantially vary the length L indicated in FIG. 23a. The matrix Ia can thus be used for crowns K of different lengths and also for crowns K of different widths. With a standard design of the die Ia so that very different teeth Z can be treated. Also conceivable is an embodiment in which the rolling edges 2 and 3 are replaced or supplemented by another material, for example with a cotton thread or the like, which is impregnated with hemostatic drugs.

FIG. 23b shows a tubular one

Die Ib, which is conical. It has a corresponding conical wall 11 which extends between a rollable edge 3 and a simple non-rollable edge 9. The matrix Ib is particularly suitable for teeth Z, which are correspondingly conical, wherein the rolled edge 3 can be below or above. The edges 3 and 9 are parallel here, but this is not mandatory. It is also conceivable embodiment in which the edges 3 and 9 are not parallel to each other, as shown in Figs. 23h, 23i and 23k. This is also conceivable in the other embodiments. Finally, one is

Execution possible, in which the edge 9 is also a rolled edge.

FIG. 40 shows a tubular embodiment Im of the die, on whose upper edge two upwardly projecting gripping aids 64 are provided. These simplify the insertion of an inlay into a tooth Z to be repaired when the matrix IM is placed around the tooth Z to be repaired, as shown in FIG. such that one of the grip aids 64 comes to lie adjacent to the cavity 37. If now an inlay is to be inserted into the cavity 37, then the adjoining gripping aid 64 can be gripped with tweezers and pulled outwards so that the matrix is not in the way when the inlay is inserted. In the embodiment of FIG. 40 are the

Gripping aids 64 designed as upwardly projecting extensions of the die forming film. However, they may also have other shapes, and e.g. be configured as rings, in which a suitably shaped hook tool can engage. It may also be provided only a grip aid 64 on the edge of the die.

FIG. 23c shows a die Ic which is essentially cylindrical and has a rolled edge 2 and a simple edge 10. Again, a design is conceivable in which the edge 2 is also a rolling edge.

FIG. 23d shows a matrix Id, which has an opening 12 in the cylindrical wall. In the die Ie shown in FIG. 23e, two openings 12 and 13 are provided.

FIG. 23f shows a female mold If, which has two simple edges 14 and 15 and which essentially tubular, esp. Cylindrical is formed. This die If, for example, can be made very easily as a section of a hose.

FIG. 23g shows a matrix Ig in the rolled-up state.

The matrices Ia-Ik are each two

Openings 5 and 27 are provided. In principle, a die is conceivable in which only one opening is provided. The other end of the die Ia is closed in this case. The die is thus only open at one end. This is used to insert an artificial crown.

FIG. 24 shows a tooth Z with a recess 18 or cavity into which a ceramic inlay 25 is inserted. At this tooth, the template Ia is under tension and absorbs the anatomical shape of the tooth and the ceramic inlay 25. The interdental space 8 is filled by the dentist with a pressing means 16, which can be injected into this space or introduced in some other way. The pressing means 16 presses the

In some cases, the matrix Ia is attached to the outer surface of the tooth Z and the ceramic inlay 25. The pressing means 16 is a hardenable plastic, for example an acrylate. Preferably, a pressing means 16 is used, which also cures by exposure to light. The hard wall of the die thus formed prevents the subsequent insertion of the ceramic inlay 25, the luting cement can flow out.

Figures 25 and 26 show a tooth Z with an artificial crown 17. The artificial crown 17 is placed here as usual on a stump 19 of the original tooth Z. The attachment of the crown 17 on the stump 19 in a known manner with fixing cement 20. When placing the artificial crown 17 on the stump 19 penetrates excess

Luting cement 20 radially outward. To remove this excess attachment cement 20 is on the artificial crown 17 a die Ia placed and the lower roll edge 3 is rolled in the directions of the arrows 21 down, wherein leaked luting cement 20 is virtually cut off by the rolled edge 3. The remaining in tooth Z fixing cement 20 is formed by the die Ia, so that after curing, an anatomically desired transition between the root and the artificial crown 17 results. FIG. 26 shows how the lower rolled edge 3 finally extends into the sulcus 22. After removing the excess fixing cement 20, the remaining in tooth Z fixing cement is cured. Subsequently, the template Ia is removed.

The method for filling the cavity 23 will be explained in more detail below with reference to FIGS. 28 to 33:

After drilling out of the cavity 23 in Figure 32

1. the template Ia stretched around the tooth Z (Fig. 31). The already manufactured and suitable inlay 25 is positioned by stretching the matrix Ia against the open cavity walls into the cavity 23 (FIG. 30). With a pressing material 16 which hardens, the die Ia is molded from the outside. Subsequently, the inlay 25 is removed and prepared for cementing. The plastic cement 20 is introduced into the cavity and the Inläy used (Fig. 29). Surpluses can now only escape occlusally, where they are easily removable. After hardening of the adhesive cement, pressing material and matrix are removed. An anatomically exactly reconstructed tooth remains without lateral cement excesses (FIG. 28).

2. Composite fillings can be done without lateral

Surpluses are produced similarly. After drilling out of the cavity 23, the (ring rolling) matrix Ia is stretched around the tooth Z and takes on its anatomical shape. A modeling silicone (or other modeling bodies or inlays) is injected into the cavity and modeling the filling, and by stretching the matrix Ia on the open cavity walls, the matrix receives the original tooth anatomy and expands to the point of contact of the adjacent tooth. When the modeling silicone has cured without lateral excess, the female exterior wall is overmolded with contact material and, after curing, forms a hard wall against the subsequent plug pressure of the composite. The modeling silicone or the modeling body is removed and the cavity prepared for the adhesive composite filling. The composite can now be introduced with tampers into the cavity 23 and cured with light. Finally, pressing material and die are removed and the composite filling is finished circularly free of excess; it only needs to be ground and polished occlusally under direct vision. In addition, the membrane can be adhesively sealed at the edges of cavities and optionally also have a layer that remains on the filling surface. 3. Composite fillings can also be made directly. After drilling out of the cavity, the ring roll die is clamped around the tooth. The cavity is prepared for adhesive composite filling and the composite is stuffed into the cavity with slight pressure, the template bulging correspondingly on the open cavity walls of the dental anatomy. By Lichtpolimerisation so the cavity is filled in layers and the strong radial tension ensures that no lateral excesses.

In another advantageous embodiment, the plastic used as pressing means 16 is still elastic even in the cured form. In this case, in the procedure described above under 2 also a dimensionally stable inlay with undercut shape as

Modeling bodies are used. By the pressing means 16 is still elastic even after curing, the Inlay can be removed in any case without destroying the Anpressmittels 16 from the cavity.

FIG. 27 shows a suitable forceps-like application tool 29 with which the matrices Ia-Ik can be stretched and applied to the one tooth Z to be treated.

The aforementioned matrices Ia to Ik are tubular. Essential here is the stretchable wall, which is also deformable and can be applied close to a tooth outer side. When filling the cavity, the die performs sealing function and prevents filling material from escaping and having to be removed after curing.

Another embodiment of the die is shown in Figs. 34-36. As can be seen, here the die 55 is formed substantially band-shaped, that is, it has a band-shaped film or membrane 51, preferably a constant thickness. In each end region of the die 55, a holding part 50 for fixing a spreading forceps of the type shown in Fig. 27 is provided. In the embodiment of FIGS. 34-36, the attachment means each consist of a tube 56 which extends transversely to the longitudinal axis A over the entire width of the die and is firmly connected thereto and in each of which a tip of the spreading forceps can be inserted. The holding parts 50 make it possible to fasten the spreading forceps to the matrix in such a way that a tension is exerted in the direction of the longitudinal axis A and so the matrix can be stretched and placed around the desired tooth. The distance a of the two holding parts 50 should be at least 1.5 cm, so that the die can be pulled as far as possible in the manner shown in FIGS. 1 and 2 up to a tooth 57 adjacent to the tooth Z to be repaired (see FIG. 1). Advantageously, the distance a is at least 2.5 cm, in particular about 3 cm, so that the die can be fastened with a clamp in a tooth space 58 which is adjacent to the tooth 57 on the adjacent to the tooth Z to be repaired (see FIG. 1, but where a differently attached female part is shown).

The total length Ll of the band is at least equal to the distance a. The length Ll is thus at least 1.5 cm, in particular at least 2.5 cm. Advantageously, a length L1, which is greater than the distance a, in particular at least 4 cm, so that outside the holding parts 50 tabs 59 survive, on which the die can be detected manually.

The width b (Fig. 34) of the band-shaped

The template is advantageously at least 5 mm, so that it can be placed around the entire height of the tooth. The width b should not exceed 15 mm, otherwise the tooth to be repaired will be difficult to access. Preferred is a width b of about 10 mm.

As can be seen in particular from FIG. 36, the membrane 51 is preferably applied substantially over the whole area to a carrier foil 60. The carrier film is a film which is stiffer than the membrane 51 and gives the die a higher stability, so that it is easier to handle. Before application, the membrane 51 is pulled off the carrier film 60. As holding parts 50 for fixing a spreading forceps, in addition to the solution shown in Figs. 34-36, other means are also contemplated, in which the holding forceps can be inserted for applying a tension, e.g. Openings or holes 61 which are cut out in the membrane 51 and into which the spreading forceps can be inserted. This is shown in FIG. 37.

As shown in Fig. 38, loops 62 may be provided as holding members 50 at the ends of the die.

Depending on the shape of the spreading forceps, the holding parts 50 can also be designed, for example, in the form of thickenings, threads with loops or hooks. As mentioned, according to one of the abovementioned tubular or band-shaped embodiments, prior to the curing of the pressing means 16, the matrix is preferably stretched outwards by temporarily inserting a modeling body into the cavity. FIG. 39 shows a preferred embodiment of corresponding modeling bodies made of foam or another elastic, easily compressible material. Foam is advantageous because of its high compressibility. As indicated in Fig. 39, the dentist is preferably a set of

Modeling bodies of different sizes provided. The dentist selects one of them whose size clearly exceeds that of the cavity, forms it into a small ball and inserts it into the cavity. There, the modeling body unfolds and pushes the die slightly outwards so that it defines a convex outer surface for the tooth Z to be repaired. Then the Anspressmittel 16 cured and the Modellierkörper be removed. A set of modeling bodies should comprise a plurality of deformable modeling bodies with different diameters D 1, D 2, D 3 at least in the range of 4 to 8 mm. Each modeling body should be compressible in its volume by at least a factor of 2, preferably by at least a factor of 4.

The shape of the modeling body according to FIG. 39 is cylindrical, since this shape can be easily produced by cutting long foam cylinders to length. However, the modeling bodies, because they are well compressible, but also have other shapes. For example, they may be spherical. LIST OF REFERENCE NUMBERS

a-k dies 41 a-c dies upper roll edge 42 frame lower roll edge 42a end

Wall 42b end

Opening 43 a-c membrane

Outside 45 edge

Inside 46 matrix

Interdental space 47 frame

Edge 48 membrane

Rand 49 die

Wall 50 holding part

Opening 51 membrane

Opening 52 breakthrough

Edge 53 adhesive layer

Edge 54 protective strips

Contact agent 55 Die

Artificial crown 56 tubes

Recess (cavity) 57 adjacent tooth

Stump 58 interdental space

Fastening cement 59 lobes

Arrow 60 carrier film

Sulcus 61 holes

Recess 62 loops

Outside 63 modeling body

Ceramic inlay 64 Handle aid

Interspace A longitudinal axis

Opening a distance

Application tool b width

Matrix d diameter

Matrix Dl, D2, D3 diameter

Matrix K crown

Matrix L length

Frame Ll tape length

Membrane P gums

Filling material R Border rounding

Cavity W root

Edge Z tooth

Surface Zl tooth

Arrow Z2 tooth

frame

Claims

claims

1. template for Füllraumbegrenzung in dentistry, which is made of a deformable material and to be applied to a tooth to be filled (Z), characterized in that it is at least partially stretchable, that they to a cavity of the tooth to be filled under tension can be applied so that the cavity is sealed at edges of the tooth and that it can stretch and bulge when filling the cavity between the sealed edges to reconstruct the original tooth shape.

2. Die according to claim 1, wherein it is at least partially made of a deformable and in particular stretchable material.

3. Die according to claim 2, wherein it is stretchable.

4. Die according to one of the preceding claims, wherein it is tubular and its diameter can be increased.

A die according to claim 1, wherein it has a frame (34, 42, 47, 50) in which a stretchable membrane (35, 43, 48, 51) is secured.

6. Die according to claim 5, wherein the frame

(34, 42, 47, 50) is plastically deformable and / or stretchable.

A die according to any one of claims 5 or 6, wherein the frame (34) is closed.

8. Die according to one of claims 5 or

6, wherein the frame (42, 47, 50) is open.

9. Die according to one of the preceding An¬ claims, wherein it has adhesives with which it is sealable in the region of the cavity edges.

10. Die according to one of the preceding An¬ claims, wherein it has a layer which remains after removal of the die on a filling and forms a surface of the filling.

11. Die according to one of the preceding claims An¬, wherein it is band-shaped and for attachment with its ends to adjacent teeth can be applied and in particular with at least one end inserted into an interdental space.

12. Die according to one of the preceding claims An¬, wherein it has a first (2) and a second (3) edge and wherein at least one of these edges (2, 3) is formed as a rolled edge.

13. Die according to claim 12, wherein the

Rolling edge (2, 3) is unrolled and rolled up.

14. Die according to one of the preceding An¬ claims, wherein it is strip-shaped and has a length of at least 1.5 cm, in particular at least 2.5 cm, in particular at least 4 cm.

15. Die according to claim 14, wherein it has a width of at least 5 mm and / or at most 15 mm, in particular of about 10 mm.

16. Die for the Füllraumbegrenzung in dentistry, in particular according to one of claims 1 to 23, with a band-shaped, stretchable linearly by at least 10% plastic sheet of a length of at least 1.5 cm and a width between 5 and 15 mm.

17. Die according to one of the preceding claims, wherein it has a thickness of at most 100 .mu.m, in particular at most 50 .mu.m.

18. Die according to one of the preceding An¬ claims, wherein it comprises a stretchable membrane (51) and a carrier film (60), wherein the stretchable membrane (51) from the carrier film (60) is removable and the carrier film (60) stiffer than the membrane (51) is.

19. Die according to one of the preceding claims An¬, wherein it has holding parts (50) for attaching a spreading forceps for stretching the die.

20. Die according to claim 19, wherein the

Holding parts (50) are designed such that the spreading forceps in the holding parts (50) can be inserted.

21. Die according to claim 20, wherein the

Holding parts (50) are designed as tubes (56) which extend transversely to a longitudinal axis (A) of the die, or wherein the holding parts as openings (51) or loops (62) are designed.

22. Die according to one of claims 19 to 21, wherein two holding parts (50) are arranged on the die, whose distance is at least 1.5 cm, in particular at least 2.5 cm, preferably about 3 cm.

23. Die for the Füllraumbegrenzung in the

Dentistry, in particular according to one of the preceding claims, with a hose-shaped, stretchable film having a circumference between 10 mm and 20 mm and a width between 5 and 15 mm.

24. Die according to one of the preceding An¬ claims, wherein it has on one edge at least one beyond the edge Griffende grip (64).

25. Die according to one of the preceding An¬ claims, wherein it is without stretching by at least 10%, in particular by at least 50%, linearly stretchable.

26. A die according to claim 25, wherein for a linear elongation of 10%, a linear tensile force of at most 50 N, in particular at most 20 N, is necessary.

27. Die according to one of the preceding claims An¬, wherein it has a thickness of at most 100 .mu.m, in particular at most 50 microns unstretched.

28. A set of modeling bodies for temporarily filling a cavity adjacent a template and preforming the template comprising a plurality of deformable ones

Modeling body (63) with different diameters (Dl, D2, D3).

29. The set of modeling bodies according to claim 28, which comprises modeling bodies (63) with different diameters (D1, D2, D3) at least in the range between 4 to 8 mm.

30. The set of modeling bodies according to claim 28, wherein the modeling bodies (63) are compressible in their volume by at least a factor of 2, preferably by at least a factor of 4.

31. Set of modeling bodies according to one of

Claims 28 to 30, wherein the modeling bodies (63) are made of foam.

32. A method for filling a cavity of a tooth comprising the steps of applying an at least partially stretchable template to the cavity for

Filling space boundary, whereby a filling space delimited by the tooth and the die in an edge region of the cavity is sealed by the die, filling a space delimited by the tooth and the die with a filling material while stretching the die between the edges to the outside and

Remove the template after curing the filler.

33. The method of claim 32, wherein the

Mold has adhesive and is at least partially secured to the tooth sealingly on the circumference of the cavity.

34. The method according to any one of claims 32 or 33, wherein the die is stretched between said edges so that the die between these edges forms a taut planar wall area.

35. The method according to any one of claims 32 to

34, wherein the die has a layer which remains after the removal of the die on the Füllungsaussenfläche and forms a surface at which a polish is unnecessary.

36. The method according to any one of claims 32 to

35, wherein on one outer side of the applied die, a curable pressing means (16) is cured and in particular that before the curing of the pressing means (16), a compressed, elastic modeling body (63) is introduced into the cavity.