Dual fixation system for prosthesis on dental implants that allows the prosthesis to be screwed or clip retained as appropriate

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

1. A dual fixation system for receiving a prosthesis on a dental implant that allows the prosthesis to be screwed or retained by clip as appropriate, said system comprises: an intermediate abutment configured to be received on the dental implant, the intermediate abutment including an internal thread; a cylinder configured to be received on the intermediate abutment, the cylinder having a retention area, the retention area including an upper housing, a lower housing and a middle housing, the upper housing having a conical internal surface and is configured to seat a fixing screw, the lower housing having a conical internal surface and is configured to seat a head of the intermediate abutment, the middle housing having an internal surface which is a concave ring and is configured to receive a clip fixing device; the fixing screw having a cone, the cone removably being seated in the upper housing; and the clip fixing device having a convex ring in an upper part of the clip fixing device and a thread in a lower part of the clip fixing device, the convex ring of the clip fixing device removably being received in the concave ring of the middle housing; wherein the fixing screw and the clip fixing device are interchangeably removably coupled to the internal thread of the intermediate abutment, so the use of one excludes the other.

2. A method for fixing a prosthesis on a dental implant in a dual form, either by screw or by clip, according to the convenience of the user dentist, both on an intermediate abutment, between the implant and the prosthesis, where said method comprises the steps of: placing a cylinder on the intermediate abutment, the cylinder having a retention area, the retention area including an upper housing a lower housing and a middle housing, the upper housing having a conical internal surface the lower housing having a conical internal surface and the middle housing having an internal surface which is a concave ring; seating a fixing screw in the upper housing seating a head of the intermediate abutment in the lower housing, the fixing screw having a cone, the cone being seated in the upper housing and being coupled to an internal thread of the intermediate abutment or seating a clip fixing device in the middle housing, the clip fixing device having a lower housing which is conical, a convex ring in an upper part of the clip fixing device and a thread in a lower part of the clip fixing device, the convex ring of the clip fixing device being seated in the concave ring of the middle housing and the thread of the clip fixing device being coupled to an internal thread of the intermediate abutment; the cylinder is retained on the intermediate abutment without having to be screwed.

3. The dual fixation system according to claim 1, wherein the cylinder has a: short cylinder shape; base form; or long cylinder shape.

4. The dual fixation system according to claim 1, wherein the clip fixing device includes: a female screwdriver housing in the convex ring of the clip fixing device at the top, the female screw driver housing configured to be screwed and unscrewed to attach the clip fixing device to the intermediate abutment.

5. The dual fixation system according to claim 1 wherein the clip fixing device being manufactured in PEEK, and the cylinder being manufactured in a metal.

6. The dual fixation system according to claim 1 wherein the clip fixing device being manufactured in metal and the cylinder being manufactured in Peek.

7. The dual fixation system according to claim 1, wherein the fixing screw tightens the upper housing of the cylinder against the intermediate abutment.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) 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

(2) FIG. 1.Sectional cut of the cylinder 1a.Retention slots for the resin or cement (optional). 1b.Concave ring-shaped housing of the clip-on device 1c.Conical housing of the fixing screw.

(3) FIG. 2.Cylinder external view

(4) FIG. 3.Sectional cut of the clip-on device. 3a.Circumferential convexity in the form of a ring which is housed in 1b.

(5) FIG. 4.Sectional section of the conical seat fixing screw. 4a.Conical seat of the fixing screw.

(6) FIG. 5.Cementation base for zirconium or ceramic-metal prostheses 5a.Retention slots for cement (optional). 1b.Concave ring shaped lodging of the clip fixing device 1c.Conical screw housing. 1d. lower housing.

(7) FIG. 6.Intermediate abutment on implant. 6a.Internal thread for clip or screw fixation device. 6b.Female screwdriver footprint. 6c.Conical wall that sits on the corresponding cone of the implant.

(8) FIG. 7.External view of the clip-on device. 3a.Circumferential convexity in the form of a ring which is housed in 1 b.

(9) FIG. 8.Sectional cut of the clip-on device. 8a.Screwdriver's female footprint. 8b.Fixation thread on the intermediate abutment that goes over the implant.

(10) FIGS. 9, 10 and 11.Different perspectives of the clip-on device

(11) FIG. 12.Sectional cut of the fixing screw 12a.Female screwdriver housing.

(12) FIG. 13. External view of fixing screw. 4a.Conical seat of the fixing screw

(13) FIG. 14.Sectional view of the assembly abutmentclip-on device. 3a.Circumferential convexity in the form of a ring which is housed in 1 b.

(14) FIG. 15.External view of the implant assembly (not claimed in the invention) with the intermediate abutment and the built-in clip-on device. 3a.Circumferential convexity in the form of a ring which is housed in 1 b.

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

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

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

(18) FIG. 19.External view of the assembly

(19) FIG. 20.Section of the assembly, intermediate abutment clip fixing device with the cement base to be inserted.

(20) FIG. 21.Section of the assembly intermediate abutment, clip-on device with the cementing base inserted.

(21) FIG. 22.Section of the assembly intermediate abutment, with the cementing base inserted and tightened by means of the fixing screw.

(22) FIG. 23.Capsule-cementing base with height cut off from the standard represented in FIG. 5.

(23) FIG. 24.Section of the assembly intermediate abutment with threaded clip attachment device on it and cementing capsule-base retained by clip.

(24) FIG. 25.Section of the capsule-cylinder cut out from the standard one shown in FIG. 1.

(25) FIG. 26.Section of the intermediate pillar-clip and capsule-cylinder assembly.

(26) 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.

(27) 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

(28) 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.

(29) 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.

(30) 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.

(31) 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.