ABUTMENT FOR DENTAL IMPLANTS, PARTICULARLY FOR DENTAL INTERVENTIONS IN ASSISTED SURGERY

Abstract

The invention relates to an abutment (100), in particular for dental interventions in assisted surgery, comprising: —a first element (1), comprising a lower cylindrical element (2) and a semi-spherical element (3) integral above with said cylindrical element (2), divided into a plurality of segments, held together by an outer element (4), in the transition zone between said lower cylindrical element (2) and said semi-spherical element (3) there being provided, internally, a shoulder (7), said semi-spherical element comprising a thread (5), ending at said shoulder (7), in which a centrally perforated screw (6) is coupled, a plurality of steps or protrusions (8) being provided on said lower cylindrical element (2); —a second element (10), comprising a first upper cylindrical element (11), which inserts inside said cylindrical element (2) of said first element (1) and equipped externally with a plurality of steps or protrusions (12), which are able to move vertically with respect to staid plurality of steps or protrusions (8) provided on said cylindrical element (2), and a lower semi-spherical element (13); and —a third semi-spherical element (16), divided into a plurality of segments, and ending with coupling means (14) with a dental implant (15).

Claims

1. Abutment, in particular for dental interventions in assisted surgery, comprising: a first element, comprising a lower cylindrical element and a semi-spherical element, integrally joined above said cylindrical element, divided into a plurality of parts, held together by an outer element, in the transition zone between said lower cylindrical element and said semi-spherical element being internally provided a shoulder, said semi-spherical element being provided with a thread, terminating in correspondence of said shoulder, in which a centrally perforated screw is coupled, a plurality of steps or protrusions being provided on said lower cylindrical element; a second element, comprising a first upper cylindrical element, inserting inside said cylindrical element of said first element and externally provided with a plurality of steps or protrusions able to move vertically with respect to said plurality of steps or protrusions provided on said cylindrical element, and a lower semi-spherical element; and a third semi-spherical element, divided into a plurality of parts, and terminating with means for coupling with a dental implant.

2. Abutment according to claim 1, characterized in that said semispherical element of said first element is divided into a number of parts ranging between three and six, preferably three parts.

3. Abutment according to claim 1, characterized in that said outer element is constituted by a ring.

4. Abutment according to claim 1, characterized in that said third lower semisphere element is subdivided into four parts.

Description

[0021] The present invention is now described, by way of example and without limiting the scope of the invention, according to its embodiment, with reference to the accompanying drawings. More specifically:

[0022] FIG. 1 is a transversal cross-section of an abutment according to the invention;

[0023] FIG. 2 is a first partial cutaway perspective view of the abutment of FIG. 1; and

[0024] FIG. 3 is a second partial cutaway perspective view of the abutment of FIG. 1.

[0025] With reference to the drawings, in particular for assisted surgery interventions, the numeral 100 denotes in its entirety an abutment.

[0026] The abutment 100 comprises a first upper element 1, consisting substantially of a lower cylindrical part 2 and an upper semi-spherical part 3, divided, in the embodiment shown in the drawings, in three parts, held together by a ring 4. Obviously, the number of parts into which the upper element 1 is divided can be different to three, for example, four, five or six.

[0027] Said upper semi-spherical part 3 is equipped internally with a thread 5, on which a perforated screw 6 is screwed.

[0028] Again internally, in the transition zone between said lower cylindrical element 2 and said upper semi-spherical element 3, at the start of the thread 5, there is a shoulder 7.

[0029] Screwing or unscrewing said perforated screw 6, which interacts with said shoulder 7, will determine an opening or a closing, as required, of the first element 1.

[0030] The lower cylindrical part 2 has internally a series of steps 8.

[0031] The abutment 100 according to the invention comprises a second element 10, consisting at the top of a cylindrical part 11, which has externally a series of steps 12, corresponding to the steps 8 made on the lower cylindrical part 2 of the first element 1. Said cylindrical part 11 will have dimensions such as to be able to couple internally with the cylindrical part 2 of the first element 1, with the respective steps 8 and 12 which will allow the adjustment according to axis z.

[0032] Below, said second element 10 comprises a semi-spherical part 13.

[0033] There is also a third semi-spherical element 16, the semi-spherical part of which is divided into four parts (but the number of parts may be greater or less than four), which are housed in the semi-spherical element 13 of the second element. Beneath the third element 16 there is the mathematical seat 14 of the dental implant 15, which may be of any mathematical implant type on the market, or which will be put on the market in the future. When the screw (not shown) of the dental implant 15 is tightened, there ill be an expansion of the third semi-spherical element 16, so as to block its rotation-tilting.

[0034] The solution according to the invention achieves an abutment of the said type which is able to completely overcome the drawbacks of the prior art, sine its stability is guaranteed by mechanical forces.

[0035] The present invention is described by way of example only, without limiting the scope of application, according to its preferred embodiments, but it shall be understood that the invention may be modified and/or adapted by an expert in the field without thereby departing from the scope of the inventive concept.