DUAL FIXATION SYSTEM FOR PROSTHESIS ON DENTAL IMPLANTS THAT ALLOWS THE PROSTHESIS TO BE SCREWED OR CLIP RETAINED AS APPROPRI-ATE

Abstract

The invention relates to a dual fixation system for dental implant prosthesis consisting of: an intermediate abutment assembly for fixation on the implant, clip fixation device, fixation screw and cylinder that allows the prosthesis to be screwed or retained by clip as appropriate, individually or independently for each implant.

This system facilitates both the immediate loading technique and the execution of the definitive prosthesis made on an intermediate abutment, since retention by clip is very advantageous in the case of implants with unfavorable emergencies, joining them to the structure as abutments and without compromising the esthetics of the case.

Claims

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25. A dual fixation system for a prosthesis on dental implants that allows the prosthesis to be screwed or retained by clip as appropriate, where such system comprises: an intermediate abutment between implant and prosthesis; a cylinder that incorporates in its retention area an upper housing and a lower one; a fixing screw that fits in the upper housing; and a clip fixing device that fits into the lower housing; where the fixing screw and the clip fixing device are housed in the same internal thread of the intermediate abutment, so the use of one excludes the other, being interchangeable and reversible.

26. A method for fixing the prosthesis on dental implants in a dual form, either by screw or by clip, according to the convenience of the user dentist, both on the intermediate abutment, between the implant and the prosthesis, where said method comprises the steps of: placing a double housing cylinder on the intermediate abutment, in whose upper housing a fixation screw fits and retains the cylinder on the abutment; or placing on the intermediate abutment a double-housing cylinder, in whose lower housing a clip fixing device retains the cylinder on the intermediate abutment without having to be screwed.

27. The dual fixing system for dental implant prosthesis according to claim 25, wherein the cylinder can have different shapes depending on its application: base form for cementing or casting; long cylinder shape; or closed capsule shape with no upper housing.

28. The dual fixing system for prosthesis on dental implants according to claim 25, wherein the clip fixing device includes: a thread that fits over the intermediate abutment; a circumferential convexity as a ring that retains the cylinder; a female screwdriver housing at the top, to be screwed and unscrewed as required on the intermediate abutment.

29. The dual fixing system for prosthesis on dental implants according to claim 25 wherein the clip fixing device can be manufactured in PEEK, the clip fixing device being the lodging of the cylinders in any of its forms including long cylinders, cementing or casting bases and closed capsules, the cylinders being manufactured in a metal.

30. The dual fixing system for prosthesis on dental implants according to claim 25 wherein the clip fixing device can be manufactured in metal, the clip fixing device being the lodging of the cylinders in any of its forms including long cylinders, cementing or casting bases and closed capsules, the cylinders being manufactured in Peek.

31. The dual fixation system for dental implant according to claim 25, wherein the fixation screw tightens the cylinder against the intermediate abutment fitting into its upper cylinder housing.

32. The dual fixing system for dental implant prosthesis according to claim 25 wherein it can be adapted to any implant system on the market by modifying the shape but not the function of the intermediate abutment of each system.

33. The dual fixing system for prosthesis on dental implants according to claim 25 wherein the cylinder in the form of a closed capsule lacks upper accommodation, thus losing the screwed retention, but the clip retention system remains unalterable; in such a way that the long cylinders, the cementing or casting bases and the closed capsules can use the same clip-on system, but only the long cylinders and the cementing or casting bases are screwed on from above.

34. The dual fixing system for prosthesis on dental implants according to claim 25 wherein the incorporation of impression transfers closed on the upper side, whose retention is the clip fixing device, to be used with a closed tray.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0055] To complement the description that is being made, and in order to help a better understanding of the characteristics of the invention in its preferential and not exclusive realization, it is accompanied as an integral part of that description, a set of drawings where with illustrative and not restrictive character, the following has been represented

[0056] FIG. 1. Sectional cut of the cylinder

[0057] 1a. Retention slots for the resin or cement (optional).

[0058] 1b. Concave ring-shaped housing of the clip-on device

[0059] 1c. Conical housing of the fixing screw.

[0060] FIG. 2. Cylinder external view

[0061] FIG. 3. Sectional cut of the clip-on device.

[0062] 3a. Circumferential convexity in the form of a ring which is housed in 1b.

[0063] FIG. 4. Sectional section of the conical seat fixing screw.

[0064] 4a. Conical seat of the fixing screw.

[0065] FIG. 5. Cementation base for zirconium or ceramic-metal prostheses

[0066] 5a. Retention slots for cement (optional).

[0067] 1b. Concave ring shaped lodging of the clip fixing device

[0068] 1c. Conical screw housing.

[0069] FIG. 6. Intermediate abutment on implant.

[0070] 6a. Internal thread for clip or screw fixation device.

[0071] 6b. Female screwdriver footprint.

[0072] 6c. Conical wall that sits on the corresponding cone of the implant.

[0073] FIG. 7. External view of the clip-on device.

[0074] 3a. Circumferential convexity in the form of a ring which is housed in 1b.

[0075] FIG. 8. Sectional cut of the clip-on device.

[0076] 8a. Screwdriver's female footprint.

[0077] 8b. Fixation thread on the intermediate abutment that goes over the implant.

[0078] FIGS. 9, 10 and 11. Different perspectives of the clip-on device

[0079] FIG. 12. Sectional cut of the fixing screw

[0080] 12a. Female screwdriver housing.

[0081] FIG. 13. External view of fixing screw.

[0082] 4a. Conical seat of the fixing screw

[0083] FIG. 14. Sectional view of the assembly abutment—clip-on device.

[0084] 3a. Circumferential convexity in the form of a ring which is housed in 1b.

[0085] FIG. 15. External view of the implant assembly (not claimed in the invention) with the intermediate abutment and the built-in clip-on device.

[0086] 3a. Circumferential convexity in the form of a ring which is housed in 1b.

[0087] FIG. 16. Section of the implant assembly (not claimed in the invention), with intermediate abutment and cylinder, without clip or screw fixing device.

[0088] FIG. 17. Section of the implant assembly (not claimed in the invention), with intermediate abutment and cylinder, with a clip fixing device.

[0089] FIG. 18. Section of the implant assembly (not claimed in the invention), with intermediate abutment and cylinder, with fixing screw.

[0090] FIG. 19. External view of the assembly

[0091] FIG. 20. Section of the assembly, intermediate abutment clip fixing device with the cement base to be inserted.

[0092] FIG. 21. Section of the assembly intermediate abutment, clip-on device with the cementing base inserted.

[0093] FIG. 22. Section of the assembly intermediate abutment, with the cementing base inserted and tightened by means of the fixing screw.

[0094] FIG. 23. Capsule-cementing base with height cut off from the standard represented in FIG. 5.

[0095] FIG. 24. Section of the assembly intermediate abutment with threaded clip attachment device on it and cementing capsule-base retained by clip.

[0096] FIG. 25. Section of the capsule-cylinder cut out from the standard one shown in FIG. 1.

[0097] FIG. 26. Section of the intermediate pillar- clip and capsule-cylinder assembly.

[0098] FIG. 27. Clip-on print transfer or coping, closed at the top (FIG. 27a) that can be used with a closed tray and dragged in the measure.

[0099] FIG. 28. Section of the system formed by an intermediate pillar with a clip fastening device and a cylinder, both incorporated.

PREFERENTIAL IMPLEMENTATION OF THE INVENTION

[0100] In addition to what is already specified in the drawings and in the previous section of the description as the preferential and not exclusive realization of the invention, various materials can be used to manufacture the system.

[0101] The male device that is threaded on the intermediate pillar can be manufactured in Peek. This material provides it with a high resistance to abrasion as well as the necessary flexibility for the clip effect. The material also allows for high precision machining. Based on this machining precision, and by changing the tolerances, we can obtain different degrees of retention and for this purpose a colour code can be established to indicate the degree of retention.

[0102] Another manufacturing alternative would be to make the male of the clip fixture (FIG. 3) in titanium instead of peek, and consequently make the capsule in peek instead of titanium. None of these possibilities or materials are exclusive to others.

[0103] Both the cylinder and the cementing base can be made of various materials, such as titanium, gold-palladium, peek and equivalent, without these materials being exclusive or necessary for the realization of the invention.