Endodontic obturator
View Patent ↗An endodontic obturator comprising a shaft section and a filler section fabricated of the same material and formed as a single unit. A handle section may be included and may be formed integrally with the shaft section and filler section as a single unit, or may be fabricated separately and attached to the single unit containing the shaft section and the filler section. An endodontic post is provided having a post section and a filler section fabricated of the same matrix material to provide a cohesive bond between the two sections.
1. An appliance for applying a filler material to a root canal comprising:
an elongated body having a proximal handle portion and a distal shaft portion;
whereby the shaft portion may be inserted in a root canal;
whereby the shaft portion comprises a filler material portion as an integral part of the shaft portion;
wherein the filler material portion has a greater width than the shaft portion that connects the filler material portion to the handle portion;
wherein the handle portion has a greater width than the shaft portion to which the handle is connected;
wherein the shaft and entire filler material portions are fabricated from a first material as a single one-piece unit;
wherein the handle portion is manufactured from a second material that is different than the first material; and
wherein the second material is a material that cohesively bonds to the first material.
2. The appliance of claim 1 wherein the shaft portion and the entire filler material portion are fabricated of a thermoplastic material or a synthetic rubber material.
3. The appliance of claim 2 wherein the synthetic rubber material comprises a silicone rubber material.
4. The appliance of claim 3 wherein the silicone rubber materials comprise polysiloxanes.
5. The appliance of claim 2 wherein the shaft portion and the entire filler material portion are fabricated of polysiloxanes, styrene-butadiene, ethylene-propylene, polysulfones, polyacrylates, polyisoprenes, epicholorohydrin, polyacetals, polyphenylene sulfides, polyarylsulfides, polyurethane dimethacrylate (PUDMA), styrene acrylonitrile, acrylonitrile-butadiene-styrene (ABS) polymers or mixtures thereof.
6. The appliance of claim 2 wherein the shaft portion and the entire filler material portion are fabricated of polyarylates, polyurethanes, polypropylenes, polyethylenes, polyamides, polyimides, fluoropolymers, polyesters, polyphosphazenes, polyanhydrides, polysulfides, polyethers, epoxies, polycarbonates, polystyrenes, polybutadienes, polyphenylene oxides or mixtures thereof.
7. The appliance of claim 6 wherein the polyacrylates are selected from the group consisting of polymethyl methacrylate, polyhydroxy ethyl methacrylate, and hydroxy ethyl methacrylate (HEMA).
8. The appliance of claim 6 wherein the fluoropolymers are selected from the group consisting of Teflon® polytetraflouethylene (PTFE) and Teflon® perflouroalkoxy (PFA).
9. The appliance of claim 6 wherein the polyesters are selected from the group consisting of polylactic acid, glycolide, polycaprolactone and co-polymers thereof.
10. The appliance of claim 1 wherein the shaft portion and the entire filler material portion are fabricated of a polymeric or resinous material.
11. The appliance of claim 1 wherein the handle portion is fabricated from a thermoplastic, thermoset material or synthetic rubber material.
12. The appliance of claim 11 wherein the synthetic rubber material comprises silicone rubber materials.
13. The appliance of claim 12 wherein the silicone rubber materials comprise polysiloxanes.
14. The appliance of claim 11 wherein the handle portion is fabricated of polysiloxanes, styrene-butadiene, ethylene-propylene, polysulfones, polyacrylates, polyisoprenes, epicholorohydrin, polyacetals, polyphenylene sulfides, polyarylsulfides, polyurethane dimethacrylate (PUDMA), styrene acrylonitrile, acrylonitrile-butadiene-styrene (ABS) polymers or mixtures thereof.
15. The appliance of claim 14 wherein the polyacrylates are selected from the group consisting of polymethyl methacrylate, polyhydroxy ethyl methacrylate, and hydroxy ethyl methacrylate (HEMA).
16. The appliance of claim 11 wherein the thermoset material comprises an epoxy material.
17. The appliance of claim 1 wherein the handle portion is fabricated of a polymeric or resinous material.
18. The appliance of claim 1 wherein the handle portion is fabricated of polyarylates, polyurethanes, polypropylenes, polyethylenes, polyamides, polyimides, fluoropolymers, polyesters, polyphosphazenes, polyanhydrides, polysulfides, polyethers, epoxies, polycarbonates, polystyrenes, polybutadienes, polyphenylene oxides, vinyl esters or mixtures thereof.
19. The appliance of claim 18 wherein the fluoropolymers are selected from the group consisting of Teflon® polytetraflouethylene (PTFE) and Teflon® perflouroalkoxy (PFA).
20. The appliance of claim 18 wherein the polyesters are selected from the group consisting of polylactic acid, glycolide, polycaprolactone and co-polymers thereof.
21. The appliance of claim 1 wherein the shaft and entire filler portions are fabricated of a material comprising plasticizing, antibiotic, cariostatic, antibacterial, anti-inflammatory, biologically active, therapeutic materials or mixtures thereof.
22. The appliance of claim 1 wherein the handle portion is fabricated of a material comprising plasticizing, antibiotic, cariostatic, antibacterial, anti-inflammatory, biologically active, therapeutic materials or mixtures thereof.
23. An endodontic post comprising:
a filler section and a post section;
whereby the filler section and the post section both comprise the same matrix material;
whereby the post section further comprises a reinforcing material dispersed in the matrix material;
whereby the filler section does not include a reinforcing material dispersed in the matrix material;
whereby the filler and post sections are provided in hardened, solid form; and
whereby the post can support a core thereon.
24. The endodontic post of claim 23 wherein the matrix material is a thermoplastic material or synthetic rubber material.
25. The endodontic post of claim 23 wherein the matrix material is a resinous or polymeric material.
26. The endodontic post of claim 23 wherein the matrix material comprises polyarylates, polyurethanes, polypropylenes, polyethylenes, polyamides, polyimides, fluoropolymers, polyesters, polyphosphazenes, polyanhydrides, polysulfides, polyethers, epoxies, polycarbonates, polystyrenes, polybutadienes, polyphenylene oxides or mixtures thereof.
27. The endodontic post of claim 26 wherein the fluoropolymers are selected from the group consisting of Teflon® polytetraflouethylene (PTFE) and Teflon® perflouroalkoxy (PFA).
28. The endodontic post of claim 26 wherein the polyesters are selected from the group consisting of polylactic acid, glycolide, polycaprolactone and co-polymers thereof.
29. The endodontic post of claim 23 wherein the synthetic rubber material comprises a silicone rubber material.
30. The endodontic post of claim 29 wherein the silicone rubber material comprises polysiloxanes.
31. The endodontic post of claim 23 wherein the matrix material comprises polysiloxanes, styrene-butadiene, ethylene-propylene, polysulfones, polyacrylates, polyisoprenes, epicholorohydrin, polyacetals, polyphenylene sulfides, polyarylsulfides, polyurethane dimethacrylate (PUDMA), styrene acrylonitrile, acrylonitrile-butadiene-styrene (ABS) polymers or mixtures thereof.
32. The endodontic post of claim 31 wherein the polyacrylates are selected from the group consisting of polymethyl methacrylate, polyhydroxy ethyl methacrylate, and hydroxy ethyl methacrylate (HEMA).
33. The endodontic post of claim 23 wherein the matrix material comprises plasticizing, antibiotic, cariostatic, antibacterial, anti-inflammatory, biologically active, therapeutic materials or mixtures thereof.
34. The endodontic post of claim 23 wherein the reinforcing material comprises fillers, fibers or mixtures thereof.
35. The endodontic post of claim 34 wherein the fillers comprise silica, silicate glass, quartz, barium silicate, strontium silicate, barium borosilicate, barium sulfate, bismuth oxychloride, strontium borosilicate, borosilicate, lithium silicate, amorphous silica, ammoniated or deammoniated calcium phosphate and alumina, zirconia, tin oxide, titania or mixtures thereof.
36. The endodontic post of claim 34 wherein the fibers comprise glass, ceramic, metal, carbon, graphite, polymeric such as cellulose, polyamide, aramid, polyester, polyaramid, acrylic, vinyl and modacrylic, polyolefin, polytetrafluorethylene, or mixtures thereof.
37. The endodontic post of claim 34 wherein the fibers comprise long, unidirectional, continuous filaments which are preferably at least partially aligned and oriented along the longitudinal dimension of the post.
38. The endodontic post of claim 34 wherein the fibers are aligned perpendicular to the longitudinal dimension of the post.
39. The endodontic post of claim 34 wherein the fibers comprise random- length fibers.
40. The endodontic post of claim 34 wherein the fibers comprise uniform-length fibers.
41. The endodontic post of claim 34 wherein the fibers comprise randomly dispersed fibers.
42. The endodontic post of claim 34 wherein the fibers comprise fabric.
43. The endodontic post of claim 23 wherein the reinforcing material is surface treated.
44. The endodontic post of claim 23 wherein the reinforcing material is surface treated with a silane.
45. The endodontic post of claim 44 wherein the silane comprises 3-methacryloxypropyl tri-methoxy silane, N-(2-aminoethyl)-3-aminopropyl trimethoxysilane, or a mixture thereof.
46. The endodontic post of claim 23 wherein the matrix comprises polymerization initiators, polymerization accelerators, ultra-violet light absorbers, anti-oxidants, fluorescent whitening agents, free radical initiators, or mixtures thereof.
47. An endodontic post comprising:
a filler section and a post section;
whereby the filler section and the post section both comprise the same matrix material;
whereby the post section further comprises a reinforcing material dispersed in the matrix material;
whereby the matrix material is a thermoplastic material or a synthetic rubber material;
whereby the filler section does not include a reinforcing material dispersed in the matrix material;
whereby the filler and post sections are provided in hardened, solid form;
whereby the post can support a core thereon.
48. An endodontic post comprising:
a filler section and a post section;
whereby the filler section and the post section both comprise the same matrix material;
whereby the post section further comprises a reinforcing material dispersed in the matrix material;
whereby the matrix material is a resinous or polymeric material;
whereby the filler section does not include a reinforcing material dispersed in the matrix material;
whereby the filler and post sections are provided in hardened, solid form;
whereby the post can support a core thereon.