Highly self-tapping dental implant system with hybrid connection and parallel double cone locking between prosthetic abutment, implant and infernal screw

Abstract

Highly self-tapping dental implant system with hybrid cone type connection and interlocking rails, which allows high insertion (or removal) torque and double parallel cone locking between the implant, prosthetic abutment and internal screw, even in its 3.0 mm diameter embodiment, and gives the whole system high primary and secondary stability, optimal watertightness thanks to the double cone sealing, as well as predictable long-term fixation of the dental prosthesis on the implant.

Claims

1. A dental implant system comprising: an external part of an implant body formed of a progressive conical core of variable conicity depending on a diameter and length of the implant body, which is surrounded by cutting spirals separated from the conical core both horizontally and vertically; an internal part of the implant body comprising a blind hole with two elements: a hybrid connection and a female thread on which an abutment screw sits, the hybrid connection is a cone of between 5 and 6 degrees mixed with six vertical rails which form a hexagon; an abutment with a tapered seat on the implant body that prevents loosening of the prosthesis; and a tapered seating screw on the abutment, which tightens the abutment onto the implant by locking it; wherein the hybrid connection forms a parallel double cone lock, between the abutment and the implant, and between abutment and the abutment screw and wherein the hybrid connection which is 3 mm long, comprises the cone and six vertical rails which form a hexagon and that are intermingled in its central part of hybrid zone, forming 1 mm of the cone, 1 mm a central part of hybrid zone and 1 mm of rails.

2. The dental implant system according to claim 1, wherein the implant body includes in the external part a four blade helix in an apical part.

3. The dental implant system according to claim 2, wherein the external part of the implant body includes four oblique cutting channels that start from the four-blade helix and go up to the middle of the length of the implant body and serve as an escape distribution route of the bone chip produced during insertion.

4. The dental implant system according to claim 1 wherein the threads of the external part of the implant body show a progressive widening of an edge which, in the middle of the length of the implant body undergoes a splitting.

5. The dental implant system according to claim 1, wherein the tapered seating screw has a thinned hourglass shape in a center whose taper is parallel to the taper of the abutment and to the taper of the implant body at its connection.

6. The dental implant system according to claim 1, wherein the connection rails measuring 2 mm in total length between a hexagonal part and a hybrid part between the hexagon and the cone.

7. The dental implant system according to claim 1, wherein the abutment has an internal conical seat for the screw that tightens it and another external conical seat parallel to the previous one that it assembles the abutment with the implant body forming an internal double parallel cone lock with double sealing.

8. The dental implant system according to claim 7, wherein an abutment extraction thread is located at the height of the screw head once the assembly is assembled, and not at the height of the hexagon.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) To complement the description being made and in order to help a better understanding of the characteristics of the invention, is accompanied as an integral part of that description, a set of drawings where with illustrative and not restrictive, has been represented as follows:

(2) FIG. 1.—Elevation of the implant in a possible realization in terms of size and length.

(3) FIG. 2.—Elevation of the implant section and its wide connection, standard platform (SP).

(4) FIG. 3.—Perspective of the implant and its external shape.

(5) FIG. 4.—Apex of the implant.

(6) FIG. 5.—Elevation of the abutment in a possible implementation for wide connection, standard platform (SP).

(7) FIG. 6.—Section of the abutment for wide connection (SP)

(8) FIG. 7.—Apical view of the wide connecting pillar (SP)

(9) FIG. 8.—Section of the wide connection screw SP

(10) FIG. 9.—Height of the wide connection screw (SP)

(11) FIG. 10.—Elevation of the wide connection screw section (SP)

(12) FIG. 11.—Elevation of the wide connection pillar section (SP)

(13) FIG. 12.—Elevation of the wide connection implant section (SP)

(14) FIG. 13.—Section of the assembled assembly of a possible implementation of the “implant—abutment—screw” wide connection system (SP)

(15) FIG. 14.—Elevation of the implant section in a possible narrow diameter realization (ø3.0 mm) and its narrow connection, narrow platform (NP)

(16) FIG. 15.—Elevation of the implant section in a possible wide diameter realization (ø equal or greater than 4.0 mm) with its wide connection (SP)

(17) FIG. 16.—Elevation of the implant in a possible narrow diameter (ø3.0 mm) narrow connection realization (NP).

(18) FIG. 17.—Section elevation of the narrow implant (ø3.0 mm) with its narrow connection (NP)

(19) FIG. 18.—Perspective of the implant in a possible narrow diameter implementation (ø3.0 mm)

(20) FIG. 19.—Apex of the narrow diameter implant (ø3.0 mm)

(21) FIG. 20.—Elevation of the narrow connecting pillar (NP)

(22) FIG. 21.—Elevation of the narrow connection pillar section (NP)

(23) FIG. 22.—Apical view of the Narrow Connecting Pillar (NP)

(24) FIG. 23.—Elevation of the narrow connection screw (NP)

(25) FIG. 24.—Narrow connection screw section (NP)

(26) FIG. 25.—Narrow connecting pillar section (NP)

(27) FIG. 26.—Narrow connection implant section (NP)

(28) FIG. 27.—Section of the assembled assembly of a possible “implant-abutment-screw” system.

DETAILED DESCRIPTION OF THE INVENTION

(29) The invention as shown in FIGS. 1-27 is a very self-tapping implant that penetrates the bone very progressively, which in turn is internally equipped with a connection that allows a high insertion torque to be applied without generating blockages of the insertion key and which also serves to block the prosthetic abutment thanks to the friction created by two parallel cones, that of the abutment on the implant and that of the screw on the abutment.

(30) The external shape of the implant is composed of a progressively tapered core (1b) that is different for each size of implant, which in turn is surrounded by very sharp spirals (1c) and separated from it, which begin in their most apical part by a four-bladed helix (1d) and then become progressively wider towards occlusal and approximately half the length of the implant undergoes a split (1e) that continues to the top of the implant (1a), providing the implant with an added vertical anchorage as shown in FIG. 1. This helix is twisted as we ascend towards the occlusal face of the implant, forming four oblique evacuation channels (1f).

(31) With respect to the connection (FIG. 2), it is of the hybrid type: A cone of between 5 and 6 degrees (2a) is mixed with 6 vertical rails (2c) which form a hexagon similar to a torx connection.

(32) There are three distinct areas in the connection, described from top to bottom, with the following characteristics:

(33) (a) A first part, of approximately 1 mm, formed by a pure cone (2a).

(34) (b) A second zone, hybrid, shared between the extension of the cone and the beginning of the vertical rails, which is also approximately 1 mm long (2b).

(35) c) The third, lower, zone is composed exclusively of the vertical rails which form a torx-type hexagon that serves for indexing the pillar and transmitting torque, and is also approximately 1 mm long (2c).

(36) This hybrid connection allows the mechanical platform of the hexagon to be wider, and therefore, supports more torque, and at the same time gives more stability to the implant-abutment assembly. This innovative feature allows us the great advantage of being able to remove the already osseointegrated implant by applying inverse torque in the case of poorly placed implants or those affected by periimplantitis, without trephining and maintaining the bone in a minimally invasive manner, which greatly facilitates the work of the clinician and improves future treatment.

(37) Another advantage of this hybrid configuration is the fact that it is much easier for the impression coping to be ejected from the implant, since it is not necessary to reach the lower third of the connection in order to index the coping, it is sufficient for the coping to enter the hybrid area.

(38) This fact is particularly important when impression taking in cases with very inclined and divergent implants, such as those increasingly common in All on Four, All on Six, tuberous implants, great bone vestibularization, etc.

(39) Another innovative feature of this system is that the abutment extractor thread (FIG. 6) is at the height of the screw head (6a), and not at the height of the hexagon, as is usual in the market. This gives us the great advantage of being able to lock and unlock the rotating abutments whenever we want, an action that would not be possible without this location of the extractor thread. This greatly facilitates the parallelization of the abutments, both in the mouth and in the laboratory model.

(40) Another new feature of this implant is the conical seating of the screw (9a with 6b) on the abutment, which is parallel to the conical seating of the abutment on the implant (5a with 2a), constituting a novel system of parallel double cone seating (13a and 13b).

(41) The first great advantage of this configuration of double parallel cone is the fact that the set formed by implant (FIG. 12)—abutment (FIG. 11)—screw (FIG. 10), behaves as a whole, supporting the mechanical stress and distributing it much better.

(42) The other great advantage of this parallel conical settlement is that the friction created by the screw on the abutment (13a) prevents loosening of the same, thus solving one of the great daily problems in clinical practice.

(43) Another novel feature of this abutment screw, apart from its conical seating, is that it has an hourglass shape with a thinning in its middle part (9b), which facilitates its entry into the crown in cases of angled access chimneys (anterior sector).

(44) This hourglass shape means that the implant-abutment-screw assembly flexes without deformation under high load, with the epicentre of the flexure being precisely the screw thinning area (9b).

(45) The system has two platforms, narrow platform NP (FIG. 14) for the narrow diameter implant versions (3.0 mm, 3.25 mm and 3.5 mm) and wide platform SP (FIG. 15) for the wide diameter implant versions (4.0 mm and larger). The length of both connections (12a) is the same and the cone angles are also the same. Only the width and depth of the rails (2c) vary, which are larger in the wider connection.

(46) Another new feature that improves the technique is that the double cone gives the system a double watertight seal.

(47) The protocol for placing this implant consists of making a conical osteotomy staggered to the total length corresponding to the implant, in which the body of the implant, also conical, is only slightly superior, to allow the cutting coils to be introduced into the adjacent bone, generating stability without damaging it, cutting and not crushing it, thus preserving cell activity and physiology as much as possible.

(48) In the case of very hard bone, the so-called type I, the cone of the osteotomy must be slightly wider.

(49) The invention can be realized in various sizes as to length of the implant and diameter. Without this enumeration pretending to be restrictive, they can be made:

(50) In sizes of ø 3.0 with the following lengths: L 7, L 8.5, L 10, L 11.5, L13 and L15, L17.

(51) In sizes of ø 3.25 with the following lengths: L 7, L 8.5, L 10, L 11.5, L13 and L15, L17.

(52) In sizes of ø 3.5 with the following lengths: L 7, L 8.5, L 10, L 11.5, L13 and L15, L17.

(53) In sizes of ø 4 with the following lengths: L 7, L 8.5, L 10, L 11.5, L13 and L15, L17.

(54) In sizes of ø 4.5 with the following lengths: L 7, L 8.5, L 10, L 11.5, L13 and L15, L17.

(55) In sizes of ø 5 with the following lengths: L 7, L 8.5, L 10, L 11.5, L13 and L15, L17.

(56) In sizes of ø 5.5 with the following lengths: L 7, L 8.5, L 10, L 11.5, L13 and L15, L17.

(57) In sizes of ø 6 with the following lengths: L 7, L 8.5, L 10, L 11.5, L13 and L15, L17.

(58) In the diameters 3.0, 3.25 and 3.5 the connection will be in its narrow version NP “narrow platform” (FIG. 14), and in the bigger diameters the connection will be standard SP “standard platform” (FIG. 15).