Bendable prosthesis post and angular adjustment method

Abstract

A bendable prosthetic abutment includes a guiding and anchoring segment, a connection zone, for connecting to an implant arranged on a gingival tissue for receiving a prosthetic abutment model, an intermediate restriction for angular orientation, a mounting and fastening portion forming an upper portion of the bondable prosthetic abutment for receiving a prosthesis, and a sacrificial and anchoring zone which has a diameter greater than a diameter of the connection zone so as to define a protuberant ring-shaped shoulder arranged between the intermediate restriction (4) and the connection zone (2) for connecting to an implant and anchoring in a cavity.

Claims

1. An angular adjustment method for a definitive bendable prosthetic abutment provided with a single body, the method comprising: providing a definitive bendable prosthetic abutment with a single body, the prosthetic abutment formed to have a guiding and anchoring segment (1) of the single body to guide and anchor the prosthetic abutment, a connection zone (2) of the single body connected to an end portion of the guiding and anchoring segment and extending upwardly therefrom to connect to an implant when arranged on the gingival tissue, a sacrificial and anchoring zone (3) connected to an end portion of the connection zone and having a diameter greater than a diameter of the connection zone so as to define a protuberant ring-shaped shoulder, the guiding and anchoring segment, the connection zone, and the sacrificial and anchoring zone collectively defining a lower portion of the single body, the diameter of the sacrificial and anchoring zone (3) being greater than the diameter of the largest portion of the connection zone, a bendable intermediate restriction (4) connected to the sacrificial and anchoring zone and extending upwardly therefrom and positioned to define an intermediate portion of the single body, and a mounting and fastening portion (5) having a greater cross-sectional diameter than the intermediate restriction, connected to an end portion of the intermediate restriction, and extending upwardly therefrom to receive a prosthesis to be mounted and fastened when positioned thereon, the mounting and fastening portion defining the upper portion of the single body of the definitive bendable prosthetic abutment; positioning the guiding and anchoring segment (1) of the prosthetic abutment into a cavity (29) of a base (28) of a separate bendable device (D) so that peripheral portions of the shoulder of the sacrificial and anchoring zone (3) of the prosthetic abutment contact peripheral portions of the cavity (29) of the separate bendable device (D); and bending an upper portion of the single body about the intermediate portion for angular orientation with respect to the lower portion when positioned in the cavity (29) of the bending device (D).

2. The angular adjustment method according to claim 1, wherein the sacrificial and anchoring zone (3) has a conical shape and has an external geometry consistent with an internal geometry of the cavity (29) of the base (28) of the separate bending device (D) when positioned therein, thereby to promote anchoring of a definitive prosthetic abutment model during the bending step.

3. The angular adjustment method according to claim 2, wherein the sacrificial and anchoring zone (3) has an outer surface that extends outwardly from an outer surface of the end portion of the connection zone (2) at an angle ranging from 1 and 30 (degrees) to promote anchorage of the shoulder in the cavity of the separate bending device.

4. The angular adjustment method according to claim 1, wherein the intermediate restriction (4) is dimensioned based on a ratio between a height (h) of the intermediate restriction as defined by an extent between an upper end portion of the shoulder and the end portion of the mounting and fastening portion and the smallest diameter (d) of the intermediate restriction (4), the ratio being at least 0.37 and being increasable according to a degree of inclination of the upper portion of bendable prosthetic abutment with respect to the lower portion of the bendable prosthetic abutment.

5. The angular adjustment method according to claim 4, wherein the height (h) of the intermediate restriction (4) is variable and also is determined based on different gingival tissue heights of a mouth.

6. The angular adjustment method according to claim 1, wherein the intermediate restriction (4) includes a conical portion (7) which has a variable height as defined by an extent between an upper end portion of the shoulder to the lower end portion of the mounting and fastening portions, thereby to enable adaptation of gum tissue during regeneration.

7. The angular adjustment method according to claim 1, wherein the guiding and anchoring segment (1) has an external geometry consistent with the internal geometry of a mounting area (12) arranged within the cavity (29) of the separate bending device and to be arranged concentrically, thereby to promote alignment and anchoring of a definitive prosthetic abutment during the bending step, and wherein the guiding and anchoring segment has a smaller circumference than the connection zone.

8. The angular adjustment method according to claim 1, wherein the intermediate restriction comprises a first restriction of the single body, and the definitive bendable prosthetic abutment further comprises a second restriction (11) of the single body positioned between and connected to the lower end portion of the mounting and fastening portion (5) and to an upper end portion of the intermediate restriction (4), and wherein the bendable intermediate restriction also has a circumferential profile which is arc-shaped concave.

9. An angular adjustment method, according to claim 1, wherein the prosthetic abutment is formed by a mechanical forming process which includes the bending device (D), a reference abutment (R), and a protective cover (31 or 32) to be selectively coupled to the mounting portion (5) of the definitive prosthetic abutment (A, A, B, B or C) for a prosthesis.

10. The angular adjustment method, according to claim 9, wherein the bending device (D) comprises the base (28), one or more cavities (29) housed in the base to position the definitive prosthetic abutment (A, A, B, B or C) therein, and a support (27) associated with an actuator (26) which promotes bending of an upper portion of the definitive abutment for angular adjustment.

11. The angular adjustment method, according to claim 9, further comprising providing a reference abutment (R), the reference abutment comprises a guiding and anchoring segment (10), a connection zone (20) for connection to an implant when positioned in a mouth, an anchoring region (30) minimally greater than the external geometry of the connection zone (20), a restriction (40) shaped with an angle, and a rod (50) for suitable angle reference of the definitive prosthetic abutment (A, A, B, B or C); and copying the angular position of the reference abutment (R) when bending the definitive prosthetic abutment with the separate bending device.

12. The angular adjustment method, according to claim 11, wherein the guiding and anchoring segment (10) of the reference abutment (R) has an external geometry which is consistent with the internal geometry of a mounting area (12) arranged within the cavity (29) in the separate bending device (D) concentrically to promote alignment in combination with the definitive prosthetic abutment (A, A, B, B or C) to be angled.

13. The angular adjustment method, according to claim 11, further comprising: a) placement and connection of the reference abutment (R) in a conical cavity of an implant in a mouth in order to promote anchorage through an anchoring region (30); b) execution of the bend by determining an angle by flex of a rod (50) of the reference abutment (R) to promote warping of the restriction (4); c) removal of the reference abutment (R) from the cavity of the implant; d) placement and connection of the reference abutment (R) in the cavity (29) arranged on the base (28) of the bending device (D), promoting its anchoring through the anchoring region (3) and alignment through the guiding segment (1) embedded in the mounting area (12) arranged within the cavity (29) concentrically; e) placement and connection of the definitive bendable prosthetic abutment (A, A, B, B or C) in another cavity (29) of the bending device (D), promoting its anchoring through the sacrificial zone (3) and alignment through the guiding and anchoring segment (1) embedded in the mounting area (12), arranged within the cavity (29) concentrically; f) coupling of a protective cover (31 or 32) to a prosthesis mounting portion of the definitive prosthetic abutment; g) execution of the bend by means of a gradual progress actuator (26) directed towards the upper portion of the definitive prosthetic abutment model (A, A, B, B or C) coated by a protective cover (31 or 32) so as to bend the restriction (4) to obtain equal angle between the reference abutment (R) and the definitive prosthetic abutment (A); and h) pullout of the actuator (26) and removal of the angled definitive prosthetic abutment from the cavity (29) of the bending device (D), of its respective protective cover (31 or 32), and the reference abutment (R) for angular adjustment.

14. The angular adjustment method, according to claim 11, further comprising: a) placement and connection of the reference abutment (R) in the conical cavity of the implant in order to promote its anchoring through the anchoring region (30); b) execution of the bend by determining the proper angle by flex of a rod (50) of the reference abutment (R) to promote warping of the restriction (4); c) removal of the reference abutment (R) from the cavity of the implant; d) placement and connection of the reference abutment (R) in the cavity (29) arranged on the base (28) of the bending device (D), promoting its anchoring through the anchoring region (3) and alignment through the guiding segment (1) coupled to a mounting area (12) arranged within said cavity (29) concentrically; e) placement and connection of the definitive bendable prosthetic abutment (A, A, B, B or C) in another cavity (29) of the bending device (D), promoting its anchoring through the sacrificial zone (3) and alignment through the guiding and anchoring segment (1) coupled to the mounting area (12), arranged within said cavity (29) concentrically; f) execution of the bend by means of the gradual progress of an actuator (26) directed towards the upper portion (5) of the definitive prosthetic abutment (A, A, B, B or C) in order to promote warping of the restriction (4) to obtain equal angle between the reference abutment (R) and the definitive prosthetic abutment (A); and g) pullout of the actuator (26) and removal of the angle definitive prosthetic abutment from the cavity (29) of the bending device (D), and the reference abutment (R) for determining the angle.

15. The angular adjustment method, according to claim 9, wherein the protective cover (31 or 32) comprises a conical coupling region (31A or 32A) positioned to have an internal geometry consistent with the external geometry of the upper portion (5) of the prosthetic abutment for mounting and fastening a prosthesis so as to promote anchorage when bending.

16. The angular adjustment method, according to claim 1, wherein the prosthetic abutment is formed by a mechanical forming process which includes the bending device (D), a first measuring instrument for determining an angle, a protective cover (31 or 32) to be coupled to the mounting portion (5) of a definitive prosthetic abutment (A, A, B, B or C) for the prosthesis, and a second measuring instrument associated with the bending device (D) for determining angles.

17. The angular adjustment method, according to claim 16, wherein the first measuring instrument comprises an intraoral goniometer, and wherein the second measuring instrument comprises a goniometer.

18. The angular adjustment method, according to claim 16, further comprising: a) determination of an angle measured by means of an intraoral goniometer; b) placement and connection of a definitive prosthetic abutment (A, A, B, B or C) in a cavity (29) of the bending device (D), promoting its anchoring through the sacrificial zone (3) and alignment through the guiding and anchoring segment (1) connected to the mounting area (12), arranged within said cavity (29) concentrically; c) coupling the protective cover (31 or 32) to the mounting portion upper third portion (5); d) execution of the bend by means of a gradual progress actuator (26) directed towards the upper portion (5) of the definitive prosthetic abutment (A, A, B, B or C) to promote warping of the restriction (4) to obtain an angle determined by means of a measurement instrument associated with the bending device (D); and e) pullout of the actuator (26) and removal of the angled definitive prosthetic abutment from the cavity (29) of the bending device (D), and its respective protective cover (31 or 32).

19. The angular adjustment method, according to claim 16, further comprising: a) determining an angle measured in a mouth by an intraoral goniometer; b) placement and connection of the definitive bendable prosthetic abutment (A, A, B, B or C) in a cavity (29) of the bending device (D), promoting its anchoring through the sacrificial zone (3) and alignment through the guiding and anchoring segment (1) connected to the mounting area (12), arranged within the cavity (29) concentrically; c) execution of the bend by means of the gradual progress of an actuator (26) directed towards the upper portion (5) of the definitive prosthetic abutment (A, A, B, B or C) in order to promote warping of the restriction (4) to obtain an angle determined by a measuring instrument associated with the bending device (D); and d) pullout of the actuator (26) and removal of the angled definitive prosthetic abutment from the cavity (29) of the bending device (D).

20. The angular adjustment method, according to claim 1, wherein the prosthetic abutment further is formed by a mechanical forming process which includes the bending device (D) and a reference abutment (R).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The definitive and bendable prosthetic abutment and the corresponding angular adjustment method will be described below based on the accompanying drawings, in which:

(2) FIG. 1 illustrates a perspective view of a model of cemented, definitive and bendable prosthetic abutment (A), in a particular embodiment, comprising a conical connection region (2);

(3) FIG. 2 illustrates a lateral view of the cemented, definitive and bendable abutment (A);

(4) FIG. 2A illustrates a lateral view of a model of a cemented, definitive and bendable abutment (A) in a particular embodiment, comprising a threaded segment (22);

(5) FIG. 3 illustrates a perspective view of another model of screwed, definitive and bendable abutment (B), in a particular embodiment, comprising a conical connection region (2);

(6) FIG. 4 illustrates a lateral view of the screwed, definitive and bendable abutment (B) with a possibility of variation in height (h) of the restriction (4) for compensation of different gingival heights;

(7) FIG. 5 illustrates a lateral view of a cemented, definitive and bendable abutment (A) in a constructive variant, showing an example of variation of height (h) of the restriction (4) for compensation of different gingival heights;

(8) FIG. 6 illustrates a lateral view of a screwed, definitive and bendable abutment (B) in a constructive variant, further showing a conical portion (7) for compensation of different gingival heights;

(9) FIG. 7 illustrates a schematic view of a screwed, definitive and bendable abutment (B) showing an example of angular adjustment with the restriction (4) formed;

(10) FIG. 8 illustrates a schematic lateral view of a cemented, definitive and bendable abutment (C) in a constructive variant, showing a restriction (4) in the lower third bent portion, and another restriction (11), optionally bendable, in the upper third portion (5) for settlement of the prosthesis;

(11) FIG. 9 illustrates a schematic lateral view of a cemented, definitive and bendable abutment (C) in a constructive variant, showing a restriction (11) in the upper third portion (5) for settlement of the bent prosthesis, and another restriction (9) bent in the lower third portion;

(12) FIG. 10 illustrates a schematic lateral view of a simulation of bends of a cemented, definitive and bendable abutment, the restriction (9) in the lower third portion, in combination with the conformation of the restriction (11) in the upper third portion (5) for the mounting of the prosthesis allowing numerous adaptations of the prosthesis;

(13) FIG. 11 illustrates a lateral view of a reference abutment (R), with a lower geometry similar to that of the already mentioned definitive prosthetic abutment models, differing primarily in an upper region formed by a reference rod (16);

(14) FIG. 12 shows a model of the protective cover (31) of the cemented, definitive and bendable abutments (A and C);

(15) FIG. 12A shows a model of the protective cover (32) of the screwed, definitive and bendable abutments (B and B);

(16) FIG. 13 shows a model of a bending device (D) for conformation of the definitive abutments;

(17) FIG. 14 shows a schematic view of the reference abutment (R) being connected in a cavity (29) of the bending device (D);

(18) FIG. 15 shows a schematic view of a mounting sequence of the protective cover (31) in a definitive abutment model (A) with a bending device (D);

(19) FIG. 16 shows a schematic view of the conveniently positioned and connected components in the cavities of the bending device (C);

(20) FIG. 17 shows a partial schematic sectional view simulating the progress of an actuator (26) associated with the bending device (D) for execution of the bend;

(21) FIG. 17A shows a partial schematic sectional view of a definitive abutment model (B) connected to a cavity (29) of the bending device (D), comprising a protective cover (32) coupled to the mounting portion (5) for the prosthesis;

(22) FIG. 18 shows a partial schematic view simulating the removal of a definitive abutment model (A) suitably angled in the bending device (D);

(23) FIG. 19 shows a comparison between a definitive abutment (A) and a reference abutment (R) with similar angles; and

(24) FIG. 20 shows an example of another type of bending device (E) in a schematic perspective view.

DETAILED DESCRIPTION OF THE INVENTION

(25) As illustrated in the attached drawings, the present invention relates to a new concept of a definitive and bendable prosthetic abutment including an angular adjustment method wherein:

(26) FIGS. 1 and 2 illustrate a model of a cemented, definitive and bendable abutment (A), in a particular embodiment, which comprises a guiding and anchoring segment (1) followed by a zone (2) for connection to an osseointegrated implant (not depicted); a sacrificial and anchoring zone (3) minimally greater than the external geometry of the zone for connection (2); a restriction (4) in the lower third to achieve angular adjustment; and adjoining the latter a mounting and fastening portion of cemented or screwed prosthesis (5). In this particular embodiment, the prosthesis is anchored in the portion (5) through the cementing process.

(27) Preferably, the zone for connection (2) is conical shaped concordant with a conical cavity arranged within the implant (not depicted) so as to promote fastening by means of a system of frictional fitting known as Morse taper.

(28) FIG. 2A illustrates a model of a cemented, definitive and bendable abutment (A) in a constructive variant comprising a screw threaded segment (22) as an example of another form of connection conveniently designed to be threaded into a cavity arranged within an implant (not depicted), so as to promote their connection and attachment.

(29) However, the connection between the abutment and the implant can be carried out through any suitable means known in the art.

(30) FIGS. 3 and 4 illustrate another model of a screwed, definitive and bendable prosthetic abutment (B) comprising a mounting portion (5) with reduced area and provided with a threaded hole (6) for fastening of the prosthesis by means of a screw (not depicted), and keeping the other characteristics of said definitive prosthetic abutment model (A).

(31) Being aware that, technically, the mechanical forming process in a bending operation may cause dimensional changes in the regions close to the bending point, said sacrificial and anchoring zone (3) has been designed having a larger metal volume in comparison with the zone for connection (2 or 22) to an osseointegrated implant (not depicted); said larger volume defining a ring-shaped shoulder with a larger diameter so as to provide an area to withstand all the efforts arising from the bending operation without compromising the requiring dimensional accuracy, especially in the zone for connection (2 or 22).

(32) Any deformation in the zone (2 or 22) for connection to the implant may cause loss of roundness, flatness regions and cracks making it difficult or even impossible for the correct fitting of the abutment on the osseointegrated implant, for fastening through a system of frictional fitting known as Morse taper, screwing or similar.

(33) Technically, the sacrificial and anchoring zone (3) promotes the anchoring of the abutment near the cavity (29 or 29) of the bending device (D), for execution of the bend. Because of the forces generated in the bending operation, the sacrificial zone (3) suffers intentional surface deformation as the anchoring region in the cavities (29 or 29) confers greater mechanical strength.

(34) Advantageously, said sacrificial and anchoring zone (3) restricts the contact between the zone for connection (2 or 22) and the inner region of the cavity (29 or 29) to the bending device (D), which avoids any deformation of the dimensional and mechanical properties of this region, requiring dimensional accuracy to promote proper connection between the abutment and the implant.

(35) The sacrificial and anchoring zone (3) is minimally larger than the external geometry of the zone for connection (2 or 22) so as to define a ring-shaped shoulder arranged between the bending area (4) and the zone for connection (2 or 22), the purpose of said ring-shaped shoulder being the anchoring of a definitive abutment in a cavity (29 or 29) of the bending device (D) so as to define a minimum distance between the zone for connection (2 or 22) and the cavities (29 or 29) arranged on a base (28) of the suitable bending device (D), which will be subsequently detailed.

(36) Preferably, the sacrificial and anchoring zone (3) is substantially conical and has an angle ranging from 1 and 30 (degrees) to conveniently promote anchorage to withstand efforts arising from the bending operation of the definitive abutment. Moreover, said sacrificial and anchoring zone (3) is concordant with the internal geometry of cavities (29 or 29) so as to promote fastening through a concept known as Morse taper, as depicted in FIG. 17A, that will be subsequently detailed.

(37) Additionally, any of the cavities (29 or 29) comprises a mounting area (12) arranged in the lower portion, concentrically and in low relief, in which the guiding and anchoring segment (1) of the definitive prosthetic abutment is connected so as to promote alignment, helping to anchor the abutment during the bending process in the restriction (4).

(38) While segment (1) promotes proper guiding and anchoring in the mounting area (12), the ring-shaped shoulder (3) promotes anchoring of the abutment in the cavity (29 or 29) of the bending device (D) for the bending process.

(39) Because of the forces generated in the bending operation and applied to the upper third portion (5) close to the restriction (4), the ring-shaped shoulder (3) suffers intentional surface deformation as the anchoring zone in the cavities (29 or 29) confers greater mechanical strength.

(40) Preferably, the restriction (4) comprises a circular hyperboloid configuration, which defines an appropriate morphological structure to obtain a proper angle without compromising their mechanical strength necessary to withstand the occlusal forces generated during the act of mastication.

(41) To achieve this goal, the restriction (4) is sized considering a relationship that must be obeyed, described in the ration between the height (h) by the smallest diameter (d) of the restriction (4), being at least 0.37, and it may increase according to the desired degree of inclination and the material used to manufacture the component.

(42) The abutments may be made of materials compatible with the application, that is, commercially pure titanium and its alloys or stainless steel, and may have different metallurgical conditions, as for example, in the annealed state or in different degrees of cold deformation.

(43) In one example of angular adjustment requiring an inclination of approximately 20 degrees, the smallest diameter (d) for the restriction (4) is approximately 2.25 mm, while the height (h) is approximately 1.5 mm, thus resulting in a ratio of approximately 0.67, that is, greater than 0.37.

(44) Considering the possibility of different gingival heights, both models of definitive prosthetic abutment (A and B) may comprise a variation in height (h) of the restriction (4) to compensate for different gingival heights, as depicted in FIG. 5.

(45) FIG. 4 illustrates a model of a screwed, definitive and bendable prosthetic abutment (B) with a possibility of variation in height (h) of the restriction (4), while FIG. 5 illustrates a constructive variant for a cemented, definitive and bendable prosthetic abutment (A) showing a variation in height (h) of the restriction (4) for compensation of different gingival heights.

(46) FIG. 6 illustrates a screwed, definitive and bendable prosthetic abutment (B), in one embodiment, additionally having a conical portion (7) for compensation of different gingival heights from the restriction (4) of concordant manner, and convenient geometry so as to allow the adaptation of gum tissue during regeneration.

(47) FIG. 7 illustrates a schematic view of a screwed bendable prosthetic abutment (B) showing an example of angular adjustment with an inclination ranging from 0 and 35 degrees.

(48) FIGS. 8, 9, and 10 show a constructive variant of a cemented prosthetic abutment (C and C) comprising a guiding and anchoring segment (1); followed by a zone (2) for connection to an osseointegrated implant (not depicted); a sacrificial and anchoring zone (3); a restriction (4 and 9) in the lower third to achieve angular adaptation; and, optionally, a second restriction (11) close to the mounting and fastening area for the prosthesis (5) in order to allow further adjustments if needed, depending on the aesthetic and mechanical requirements of the implant system. Thus, another suitable bending device may be used to promote bending of the mounting and fastening portion (5) before anchoring the prosthesis (not depicted).

(49) One example of angular adjustment is shown in FIG. 8, in which the prosthetic abutment (C) was bent in the restriction (4) in the lower third with an inclination ranging from 0 and 35 degrees.

(50) FIG. 9 shows another example of angular adjustment in which the definitive prosthetic abutment (C) was bent, alternatively, in the restriction (11) of the mounting and fastening portion (5) for the prosthesis (not depicted) with an inclination ranging from 0 and 35 degrees.

(51) FIG. 10 shows, in illustrative manner, a summation of bends for a specific angular adaptation, which, based on the reference axis (E1), a bending carried out in the restriction (9) in the lower third can be observed with a suitable inclination of 25 degrees, represented by the axis (E2), and another restriction (11) of the mounting and fastening portion (5) for the prosthesis (not depicted), having a complementary inclination of 7 degrees, represented by axis (E3).

(52) The preferred method of angular adjustment is formed by a customized mechanical forming process, preferably involving a proper bending device (D); a reference abutment (R), having a geometry similar to that of the bendable abutment models (A, A, B, B or C), made of easily bendable plastics; a protective cover (31 or 32) to be conveniently coupled to the mounting portion (5) of a definitive prosthetic abutment (A, A, B, B or C) for the prosthesis (not depicted); and said sacrificial and anchoring zone (3) associated with the abutment models previously described.

(53) FIG. 11 illustrates a reference abutment (R) made of easily bendable plastics, further comprising a guiding and anchoring segment (10); followed by a zone (20) for connection to an implant in the mouth; an anchoring region (30) minimally larger than the external geometry of the zone for connection (20); a restriction (40) in the lower third to achieve angular adjustment; and from this, a rod (50) for determining the appropriate angle.

(54) Preferably, the anchoring region (30) of the reference abutment (R) is also substantially conical and has an external geometry consistent with the internal geometry of cavities (29 or 29) of the bending device (D) and the external cavity (not depicted) of an implant in the mouth (not depicted) so as to promote its connection to determine the angle by the professional in the mouth, and for reference in the bending operation of a definitive bendable prosthetic abutment (A, A, B, B or C).

(55) Said reference abutment (R) can be defined as a body of evidence, which allows the determination of an appropriate inclination by the professional, who simply places it in the mouth, the conical implant cavity (not depicted) promoting its connection by means of the anchoring region (3), and its cold conformation to obtain the desired angle by checking the patient's occlusal conditions.

(56) FIG. 12 shows a model of a protective cover (31) of a cemented definitive prosthetic abutment (A, A, or C), said cover (31) having a coupling region (31A) which is substantially conical in geometry and consistent with the external geometry of the coronal portion (5) so as to promote coupling into said coronal portion (5) of a cemented definitive prosthetic abutment; and also a through hole (31B) in its upper portion to make it easier to remove it after the warping process.

(57) FIG. 12A shows another type of protective cover (32) of the upper third portion of the mounting and fastening portion (5) of a screwed definitive prosthetic abutment (B) for the prosthesis, said cover (32) having a coupling region (32A) which is substantially conical in geometry and consistent with the external geometry of the coronal portion (5) so as to promote coupling of the coronal portion (5) of a screwed definitive prosthetic abutment.

(58) Technically, the protective cover (31 or 32), while protecting the upper third portion (5) against surface deformations, enables the distribution of loads in the regions close to the restriction (4), arising from the bending operation which, when coupled, allows a uniform angular orientation thus avoiding any deformation in the dimensional and mechanical properties of the upper third portion (5) of mounting and fastening for a prosthesis.

(59) FIG. 13 shows a model of appropriate bending device (D) comprising a base (28) which houses a cavity (29) for mounting a reference abutment (R), pre-bent, according to the ideal morphology of the patient's mouth, and another cavity (29) for mounting a definitive prosthetic abutment (A, A, B, B or C) to be bent. Said bending device (D) further comprises a support (27) associated with an actuator (26), which will exert force through a warping displacement zone in contact with the protective cover (31 or 32) connected to a definitive abutment so as to bend thereof for angular adjustment.

(60) FIG. 14 shows a simulation of a step of positioning the reference abutment (R) in the cavity (29) arranged on the base (28) of the bending device (D), and in this step the reference abutment (R) comprises proper inclination determined by the professional in the mouth.

(61) FIG. 15 shows a mounting sequence starting from the reference abutment (R) already anchored and with the appropriate inclination angle determined by the professional who, in the first step, positions and anchors the definitive bendable abutment model (A) in the cavity (29) arranged on the base (28) of the bending device (D) and subsequently makes the introduction and anchorage of said protective cover (31) in the mounting portion for the future prosthesis (5).

(62) FIG. 16 shows a sequence of completed preparation for the bending operation, in which through the rotary movement of the actuator (26), the bending of a definitive prosthetic abutment is started.

(63) FIG. 17 shows a simulation of warping, where the gradual progress actuator (26) promotes the desired inclination until an equal angle is obtained between the reference abutment (R) and a definitive prosthetic abutment.

(64) FIG. 17A illustrates a definitive prosthetic abutment model (B), properly anchored in a cavity (29) through the sacrificial zone (3) and connected concentrically to the mounting area (12) through the guiding and anchoring segment (1) arranged in the lower end of a definitive prosthetic abutment.

(65) The guiding and anchoring segment (1) of the definitive prosthetic abutment (A, A, B, B or C) and of the reference abutment (R) comprises an external geometry consistent with the internal geometry of the mounting area (12) arranged within the cavities (29 and 29) concentrically and in low relief, in order to promote the aligned connection of the abutments, definitive and reference abutments, and in the bending process of a definitive prosthetic abutment, said mounting area (12) helps anchoring for angular adjustment.

(66) FIG. 18 shows the removal of the definitive prosthetic abutment (A) of the cavity (29) of the bending device (C) and subsequently the protective cover (31).

(67) FIG. 19 shows a comparison between a definitive prosthetic abutment model (A) and a reference abutment (R), bent at equal angles.

(68) As previously mentioned in a particular embodiment, the present invention includes an angular adjustment method comprising the following steps:

(69) a) placement and connection of the reference abutment (R) in the conical cavity of the implant in the mouth (not depicted) in order to promote its anchorage through the anchoring region (30);

(70) b) execution of the bend by the professional who determines proper angle by manually flexing the rod (50) of the reference abutment (R) to promote warping of the restriction (4) by checking the patient's occlusal conditions;

(71) c) removal of the reference abutment (R) of the cavity of the implant (not depicted);

(72) d) placement and connection of the reference abutment (R) in the cavity (29) arranged on the base (28) of the bending device (D), promoting its anchoring through the anchoring region (3) and alignment through the guiding and anchoring segment (1) embedded in the mounting area (12) arranged within said cavity (29) concentrically and in low relief;

(73) e) placement and connection of a definitive bendable prosthetic abutment (A, A, B, B or C) in another cavity (29) of the bending device (D), promoting their anchorage through the sacrificial zone (3) and alignment through the guiding and anchoring segment (1) embedded in the mounting area (12), arranged within said cavity (29) concentrically and in low relief;

(74) f) coupling of protective cover (31 or 32) in the mounting portion for the prosthesis (5);

(75) g) execution of the bend by means of gradual progress of an actuator (26) directed towards the upper third portion (5) of a definitive prosthetic abutment model (A, A, B, B or C) coated by a protective cover (31 or 32) so as to promote the bending of the restriction (4) to obtain equal angle between the reference abutment (R) and the definitive prosthetic abutment (A); and

(76) h) pullout of the actuator (26) and removal of the angled definitive abutment from the cavity (29) of the bending device (D), of respective protective cover (31 or 32), and the reference abutment (R) for angular adjustment.

(77) Optionally, the reference prosthetic abutment (R) may be replaced by a device for determining the angle in the mouth, such as an intraoral goniometer which can be used in the mouth to determine the appropriate angle depending on the clinical need for each patient. This goniometer can be coupled onto the implant, inside the mouth, which will allow registration, via a pointer, the angle that best matches the alignment of the elements in the dental arch, considering the angle at which the implant was implanted.

(78) In this condition, another suitable measuring instrument (not depicted), associated with the bending device may be used to control the angle measured in the mouth by the professional. The goniometer is an instrument known in the art, and used for checking angular measurements.

(79) FIG. 20 shows as an example, another type of bending device (E) in schematic view, showing the abutments properly connected and angled, which can be used instead of the bending device (D), described as a particular embodiment, involving a proper angular adjustment method. Thus, other models can be used to achieve the same goal.

(80) The bending device (E) also comprises a base (28) which houses a cavity (29) for mounting of a reference abutment (R) pre-bent, according to the ideal morphology of the patient's mouth, and another cavity (29) for mounting of a definitive prosthetic abutment (A, A, B, B or C) to be bent. Said bending device (E) further comprises a support (27) associated with an actuator (26), which will exert force through a warping displacement zone, such as a lever, which, in contact with the protective cover (31 or 32) of a definitive abutment, promotes bending thereof for angular adjustment.

(81) This application is a divisional of U.S. Non-Provisional application Ser. No. 14/408,228, filed Dec. 15, 2014, titled BENDABLE PROSTHESIS POST AND ANGULAR ADJUSTMENT METHOD, which claims priority to PCT Application No. PCT/BR2013/000209, filed Jun. 13, 2013, titled BENDABLE PROSTHESIS POST AND ANGULAR ADJUSTMENT METHOD, which claims priority to PCT Application No. PCT/BR2012/000187, filed Jun. 18, 2012, titled BENDABLE PROSTHETIC ABUTMENT APPLIED TO OSSEOINTEGRATED DENTAL IMPLANTS, all of which are incorporated herein by reference.

(82) Variations and modifications with respect to the embodiments shown and described in the attached drawings will readily occur to a person skilled in the art without departing from the scope of the present invention as defined in the attached claims.