FASTENING ELEMENT AND SYSTEM FOR INTRODUCTION IN THE TOOTH CANAL AND USE OF THE FASTENING ELEMENT FOR INTRODUCTION IN THE TOOTH CANAL

Abstract

Fastening element and system for introduction in the canals of teeth to be treated, being used alone or together with a prefabricated intra-radicular pin serving as a root reinforcement or an anchorage of prostheses to be installed on the tooth, said fastening element comprises:a body of parallel or conical shape;a parallel or tapered longitudinal through bore; anda main longitudinal slot running from the upper end to the lower end of the body of the fastening element.

Claims

1. A fastening element (10) for introduction in the tooth canal (11), characterized in that it comprises: a body of parallel or conical shape; a parallel or tapered longitudinal through bore (1); and a main longitudinal slot (2) running from the upper end to the lower end of the body of the fastening element.

2. The fastening element (10) according to claim 1, characterized in that the material of the fastening element (10) is a fiber-reinforced composite comprising a polymer matrix and fibers dispersed in the polymer matrix in the single direction or multidirectional.

3. The fastening element (10) according to claim 2, characterized in that said reinforced composite comprises radiopacifier and pigments dispersed in the polymer matrix, the radio-opacifier and the pigments being selected from the group comprising: silica, phosphate calcium oxide, barium sulfate, alumina, zirconia, tin oxide, tantalum oxide, niobium oxide, titanium oxide, poly (methacrylate) and mixtures thereof.

4. The fastening element (10) according to claim 2, characterized in that said polymer matrix of the reinforced composite is selected from the group comprising polyamides, polyesters, polyolefins, polyimides, polyacrylates, polyurethanes, vinyl esters, materials based polymers, such as epoxy, styrene, styrene, acrylonitrile, ABS polymers, polysulfones, polyacetals, polycarbonates, polyphenylene sulfides, acrylic monomers, methacrylic monomers and mixtures thereof.

5. The fastening element (10) according to claim 4, characterized in that said polymer matrix is preferably epoxy resin.

6. The fastening element (10) according to claim 2, characterized in that the fibers of the reinforced composite are fibers selected from the group comprising glass, quartz, carbon, polyamide and mixtures thereof.

7. The fastening element (10) according to claim 6, characterized in that said fiber is preferably glass fiber or quartz.

8. The fastening element (10) according to claim 1, characterized in that it comprises a flexural strength in the range of 300 to 1200 MPa.

9. The fastening element (10) according to claim 1, characterized in that the fastening element (10) is fixed tangentially to the inner wall of the root canal (11) by means of chemical cements.

10. A fastening element (20) for introduction in the tooth canal (11), characterized in that it comprises: a body of parallel or conical shape; a parallel or tapered longitudinal through hole (3); a main longitudinal slit (4); and partial longitudinal slots (5, 6) in the upper and/or lower part of the body of the fastening element, wherein said partial longitudinal slits (5, 6) are parallel with said main longitudinal slit (4); and wherein the partial longitudinal slots (5, 6) leave one end of the body of the fastening element partially advancing its extension.

11. The fastening element (20) according to claim 10, characterized in that the material of the fastening element is a fiber reinforced composite comprising a polymer matrix and fibers dispersed in the polymer matrix in the single or multidirectional direction.

12. The fastening element (20) according to claim 11, characterized in that said reinforced composite comprises radiopacifier and pigments dispersed in the polymer matrix, the radiopacifier and the pigments being selected from the group comprising: silica, phosphate calcium oxide, barium sulfate, alumina, zirconia, tin oxide, tantalum oxide, niobium oxide, titanium oxide, poly (methacrylate) and mixtures thereof.

13. The fastening element (20) according to claim 11, characterized in that said polymer matrix of the reinforced composite is selected from the group comprising polyamides, polyesters, polyolefins, polyimides, polyacrylates , polyurethanes, vinyl esters, materials based polymers such as epoxy, styrene, acrylonitrile, ABS polymers, polysulfones, polyacetals, polycarbonates, polyphenylene sulfides, acrylic monomers, methacrylic monomers and mixtures thereof.

14. The fastening element (20) according to claim 13, characterized in that said polymeric matrix is preferably epoxy resin.

15. The fastening element (20) according to claim 11, characterized in that the fibers of the reinforced composite are fibers selected from the group comprising glass, quartz, carbon, polyamide and mixtures thereof.

16. The fastening element (20) according to claim 15, characterized in that said fiber is preferably glass fiber or quartz.

17. The fastening element (20) according to claim 11, characterized in that it comprises a flexural strength in the range of 300 to 1200 Mpa,

18. The fastening element (20) according to claim 10, characterized in that the fastening element is fixed tangentially to the inner wall of the root canal (11) by means of chemical cements.

19. A fastening system for introduction in the tooth canal (8), characterized in that it comprises the fastening element (10, 20) and a prefabricated pin (9); in which the fastening element (10, 20) with its through bore (1, 3) is inserted in the prefabricated pin (9).

20. A method comprising introducing a fastening system (10, 20) into a tooth canal (11).

21. The method according to claim 20, characterized in that said fastening element (10, 20) is used alone or together with a prefabricated pin (9) for root reinforcement and supporting for prostheses to be installed on the tooth.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The structure and operation of the present invention together with further advantages thereof may be better understood with reference to the accompanying drawings and the following description:

[0033] FIG. 1A shows the introduction of a plastic pin in the state of the art;

[0034] FIG. 1B shows the filling of the resin canal made in the prior art;

[0035] FIG. 1C shows the filling of the top part of the canal with resin made in the prior art;

[0036] FIG. 1D shows the final shape after the sculpture with the use of drills that occurs in the prior art;

[0037] FIG. 2 shows a configuration of a prefabricated pin introduced in the tooth canal that occurs in the prior art;

[0038] FIG. 3 shows a preferred embodiment of the fastening element for introduction in the tooth canal of the present invention;

[0039] FIGS. 4.1 and 4.2 show an alternative embodiment of the fastening element for introduction in the tooth canal of the present invention.

[0040] FIG. 5.1 shows the fastening system of the present invention, wherein the tooth canal is arranged for insertion of the pin.

[0041] FIG. 5.2 shows the fastening system of the present invention, wherein the pin is positioned in the canal.

[0042] FIG. 5.3 shows the fastening system of the present invention, wherein the fastening element is adapted in the pin.

DETAILED DESCRIPTION OF THE INVENTION

[0043] Although the present invention may be susceptible to different embodiments, it is shown in the drawings and in the following detailed discussion, a preferred embodiment and an alternate embodiment with the understanding that said embodiments are to be considered exemplifications of the principles of the invention and not limitations of the present invention.

[0044] As shown by FIG. 3 of the present application, in a preferred embodiment, the present invention discloses a fastening element (10) for introduction in the tooth canal (11) comprising: [0045] a body of parallel or conical shape; [0046] a parallel or tapered longitudinal through bore (1); [0047] a main longitudinal slot (2) running from the upper end to the lower end of the body of the fastening element.

[0048] In an alternative embodiment, the fastening element (20) for introduction in the tooth canal (11) of the present invention comprises: [0049] a body of parallel or conical shape; [0050] a parallel or tapered longitudinal through bore (3); and [0051] a main longitudinal slot (4) extending from the upper end to the lower end of the body of the fastening element; [0052] partial longitudinal slits (5, 6) in the lower and/or upper part, [0053] wherein said partial longitudinal slits (5, 6) are parallel with said main longitudinal slit (3); and [0054] wherein the partial longitudinal slits (5, 6) leave one end of the body of the securing element partially advancing its extension.

[0055] FIGS. 4.1 and 4.2 show said alternative embodiment of the fastening element (20) of the present application.

[0056] The material of the fastening element (10, 20) may be a fiber reinforced composite comprising a polymer matrix and fibers dispersed in the polymer matrix in the single or multidirectional direction.

[0057] The fibers of the reinforced composite for manufacturing the fastening element (10, 20) are fibers selected from the following group: glass, quartz, carbon, polyamide and mixtures thereof, being preferably glass fiber and quartz.

[0058] In addition, the polymer matrix of the reinforced composite for manufacturing the fastening element (10, 20) is selected from the group comprising polyamides, polyesters, polyolefins, polyimides, polyacrylates, polyurethanes, vinyl esters, epoxy-based materials, such as epoxy resin, styrene, styrene acrylonitrile, ABS polymers, polysulfones, polyacetals, polycarbonates, polyphenylene sulfides, acrylic monomers, methacrylic monomers and mixtures thereof, preferably epoxy resin.

[0059] The reinforced composite is the union of a fiber and a polymer matrix; the polymer matrix being preferably the epoxy resin.

[0060] Said reinforced composite of the fastening element (10, 20) contains radiopacifier and pigments dispersed in the polymer matrix, one or more elements of the group comprising silica, calcium phosphate, barium sulfate, alumina, zirconia, tin oxide, oxide of tantalum, niobium oxide, titanium oxide, poly (methacrylate) and mixtures thereof.

[0061] The fastening element (10, 20) for introduction in the tooth canal of the present invention has a flexural strength in the range of 300 to 1200 Mpa.

[0062] The fastening element (10, 20) according to the present invention will be fixed tangentially to the inner wall of the root canal (11) by means of chemical cements used in odontology.

[0063] Further, the body of the fastening element (10, 20) is rigid or flexible.

[0064] In addition, the present invention describes a fastening system (8) for introduction into the tooth canal (11) comprising the fastening element (10, 20) defined in the present invention and a prefabricated pin (9), and the fastening element (10, 20) with its through bore (1,3) is inserted into the prefabricated pin (9).

[0065] FIGS. 5.1, 5.2 and 5.3 show the fastening system of the present invention.

[0066] Further, the present invention describes the use of the fastening element (10, 20) defined in the present invention, wherein said fastening element (10, 20) is to be introduced in the root canal (11) of the tooth, the fastening element (10, 20) being used alone or together with a prefabricated pin (9) for strengthening the root and/or anchoring of prostheses to be installed on the tooth.

[0067] Thus, although only some embodiments of the present invention have been shown, it will be understood that various omissions, substitutions and changes in the fastening element for insertion into the tooth canal may be made by a person skilled in the art without departing from the spirit and scope of the present invention.

[0068] It is expressly provided that all combinations of the elements performing the same function in substantially the same manner to achieve the same results are within the scope of the invention. Substitutions of elements from one embodiment to another are also fully intended and contemplated.

[0069] It is also necessary to understand that the drawings are not necessarily in scale, but that they are only of a conceptual nature. The intention is therefore to be limited, as indicated by the scope of the appended claims.