SYSTEM OF DENTAL COMPONENTS AND IMPLANTS CONTAINING GEOMETRIC CONFIGURATIONS THAT ONLY ALLOW ASSEMBLY BETWEEN CORRESPONDING PARTS

Abstract

The present invention belongs to the field of dentistry, more precisely implantodontics, and relates to a system of implants, components, and prosthetic instruments for the installation of single or multiple prostheses, whose interfaces only allow coupling and fixation between corresponding implants and components; that is, they have a geometry that prevents fixation between parts that do not combine. This system comprises interfaces with geometric characteristics that only allow perfect couplings between the implant (10, 100) and the corresponding regular or narrow prosthetic component (20, 120), wherein these geometric characteristics are defined by the fact that a pre-hole of the internal thread (14) of the regular implant (10) has a diameter slightly larger than the external diameter of the thread (122) of the prosthetic component (120), and by the following equation encompassing the implant (100) and the prosthetic component (20): when D111 =D 21 , then L 111 > L 22 (1).

Description

“DENTAL COMPONENT AND IMPLANT SYSTEM WITH GEOMETRIC CONFIGURATIONS THAT ONLY ALLOW ASSEMBLY BETWEEN CORRESPONDING PARTS.

[001] The present invention belongs to the field of dentistry, more precisely implantodontics, and relates to a system of implants, components and prosthetic instruments for the installation of single or multiple prostheses, whose interfaces only allow coupling and fixing between implants and corresponding components, that is, they have a geometry such that it prevents fixing between parts that do not combine, thus avoiding the occurrence of installation errors that could cause serious discomfort to the patient in the future. BACKGROUND OF THE INVENTION

[002] As technicians know, the process of installing implanted dental prostheses in patients with single or multiple edentulous regions requires drilling a bone socket into which an implant previously selected by the implant dentist will be screwed, and the choice of the most suitable implant for the case depends on several factors, such as the width and height of bone available at the site.

[003] After implant placement, a prosthetic component must be attached to it. This component serves as the base for the effective installation of the dental prosthesis. The implant has an internal cavity that forms the interface for attaching the component. This component typically has an internal thread in the apical or lower portion for screw fixation, which is intended to ensure the prosthetic component is properly bonded to the implant. In the middle and coronal (or upper) portions of the implant's internal cavity, the walls are shaped into varying geometries, designed to promote the component's optimal seating.

[0010] 1 1574614 of 14 prosthetic and, consequently, the correct seal between the parts - which aims to prevent the entry of food debris and / or bacteria that can cause swelling, pain, bleeding, or inflammation in the region and, therefore, inflict serious discomfort on the patient. An anti-torsion geometry is usually defined in the central region of the mating interface, and a coronal geometry that can be conical, vertical, or have several other configurations.

[004] Due to the existence of various types and dimensions of I implants, there are also various types of CP prosthetic components, each intended for use with a specific implant model to promote a perfect fit and seal between the parts. While manufacturers indicate which implants are suitable for use with each component, there are situations where incompatible components can be attached—inappropriately, it should be noted—to ill-fitting implants, thus promoting an installation that, although seemingly rigid, has deficiencies—inadequate attachment due to a small area of ​​R thread installed, despite CT contact between the parts, or the persistence of V-shaped gaps between the CP component and the I implant even with the entire R thread installed, as can be seen in the examples presented in the accompanying Figures 1.1 and 1.2.In this case, the parts fit together and the implant receives torque from the threaded region—which, alternatively, could be a screw—albeit only for a few thread pitches. However, due to this inadequate fixation, the constant forces exerted on the system during chewing can eventually loosen the screw and cause the component's thread to break. This is a serious problem that can lead to the loss of the component and require the removal of the fractured thread so that the implant can at least continue to be used.

[0010] 1574614 of 14

[005] Document WO2011 / 071228 is an example of the prior art, which aims to increase the contact area of ​​the thread interface between the implant and the prosthetic component. It is considered that the best mating and sealing conditions occur when the thread contact area is greater than the contact area between the smooth surfaces of the prosthetic component and the coronal region of the implant interface. Document JP2005270334 also aims to improve the type of mating between the implant and the prosthetic component in order to enhance the fixation and sealing conditions between the parts. However, both solutions only yield good results when the prosthetic components are installed on the corresponding implants.

[006] It is observed, therefore, that the current state of the art has already sought solutions to improve the seal between implants and prosthetic components that belong to the same line, that is, those that have corresponding parts with which they must be used. However, no solutions are known to the problem of inadequate conditions of use when parts that do not correspond are coupled—whether due to a simple error of selection or for any other reason—but which, nevertheless, appear to fit correctly, mainly through torque applied when installing the fixation screw. In other words, the current art has not provided ways to avoid achieving an apparently adequate fit between non-matching parts as a means of providing greater safety, efficiency, and service life to the components used for the installation of dental implants. OBJECTIVES OF THE INVENTION

[007] The present invention, therefore, aims to provide a mounting geometry that only allows fixing the

[0010] 1574614 of 14 correct prosthetic components for implant.

[008] Therefore, it is an objective of the present invention to provide a system of dental components and implants having an interface geometry that only permits assembly between corresponding parts.

[009] Thus, another of the main objectives of the invention is to provide a system of dental components and implants of preferably narrow and regular shape, in which it is not possible to couple prosthetic components of the narrow line to regular implants, and vice versa.

[0010] Accordingly, it is one of the objectives of the present invention to disclose a system of dental components and implants that only allows coupling between corresponding parts, in order to promote the best possible conditions of fixation and sealing for installation. SUMMARY OF THE INVENTION

[0011] The present invention, therefore, relates to a system of dental components and implants containing geometric configurations that only allow assembly between corresponding parts, said system comprising: at least one implant (10, 100) comprising substantially conical geometry (11, 111) with at least one diameter section (Dm) in its coronal portion, anti-torsion geometry (12, 112) in its intermediate portion, and at least one internal thread (14, 114, 115) of diameter (D14, D114, D115) and length (L14, L114, L115) in its middle and apical portion, wherein the length (Lm) represents the distance between the diameter section (Dm) and the beginning of the internal thread (114); and at least one prosthetic component (20, 120) cooperating with said implant (10, 100), wherein said prosthetic component (20, 120) comprises an interface region (21, 121) of diameter (D21) and substantially conical geometry that

[0010] 1574614 of 14 cooperates with the substantially conical geometry (11, 111) of the implant (10, 100), and at least one external thread (22, 122) of diameter (D22, D122) and length (L22, L122) cooperating with at least one internal thread (14, 114, 115) of the implant (10, 100), characterized in that said system comprises interfaces with geometric features that only allow perfect couplings between the implant (10, 100) and the prosthetic component (20, 120), wherein said geometric features are defined by the fact that a pre-hole of the internal thread (14) of the regular implant (10) has a diameter slightly larger than the external diameter of the thread (122) of the prosthetic component (120), and by the following equation encompassing the implant (100) and the prosthetic component (20): when D111= D21, then L111>L22(1).

[0012] Preferably, the system may additionally comprise the geometric features defined by the following equations:

[0013] L22 >= L14 / 2 (equation 2);

[0014] Dii4>Dii5 (equation 3), and

[0015] L122>=L115 (equation 4).

[0016] The system may have implants with regular prosthetic interfaces (10) and implants with narrow prosthetic interfaces (100), and comprise prosthetic components with regular interfaces (20) and prosthetic components with narrow interfaces (120).

[0017] Ideally, regular interface prosthetic components (20) cooperate only with regular interface prosthetic implants (10), where the external thread (22) of the prosthetic component (20) cooperates only with the internal thread (14) of the regular interface implant (10). Narrow interface prosthetic components (120), on the other hand, cooperate only with narrow interface prosthetic implants (100), where the external thread (122) of the component

[0010] The narrow interface prosthetic component (120) (1574614) cooperates only with the internal thread (115) of the narrow interface implant (100). Furthermore, the narrow interface prosthetic component (120) preferably comprises a lower abutment with a smooth cylindrical intermediate region (123) of length (L123). BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be described in more detail based on an example of a preferred embodiment, represented in the accompanying figures.

[0019] Figs. 1.1 and 1.2 show longitudinal section views of two sets of prosthetic components on implants that have fit and / or torque, but are actually misfit component sets that can cause problems for the parts and the patient;

[0020] Fig. 2 shows a partial cross-sectional view of a regular implant according to one of the preferred embodiments of the system of the present invention;

[0021] Fig. 3 shows a prosthetic component that can be installed on the implant shown in Fig. 2;

[0022] Fig. 4 shows a partial longitudinal section view of the coupling type of the prosthetic component of Figs. 3 on the implant of Fig. 2;

[0023] Fig. 5 shows a partial cross-sectional view of the attempted mounting of the prosthetic component of Fig. 3 on a non-matching / unsuitable implant;

[0024] Fig. 6 shows a partial cross-sectional view of a narrow implant as another preferred embodiment of the system of the present invention;

[0025] Fig. 7 shows a prosthetic component that can be installed on the narrow implant shown in Fig. 6;

[0026] Fig. 8 shows a partial longitudinal section view

[0010] 1574614 of 14 of the type of coupling of the prosthetic component of Figs. 7 to the implant of Fig. 6;

[0027] Fig. 9 shows a partial cross-sectional view of the attempted mounting of the prosthetic component of Fig. 7 on a non-matching / unsuitable implant;

[0028] Fig. 10 shows, in isolation, only the interface region of any regular prosthetic component that can be installed in a regular implant of the system of the presented invention;

[0029] Fig. 11 shows, in isolation, only the interface region of any narrow prosthetic component that can be installed in a narrow implant of the system of the present invention;

[0030] Fig. 12 shows a cross-sectional view of the regular implant interface;

[0031] Fig. 13 shows a cross-sectional view of the narrow implant interface;

[0032] Fig. 14 shows an example of a healing cap showing the geometric configuration of a regular interface for coupling to a regular implant according to a preferred embodiment of the present invention;

[0033] Fig. 15 shows an example of a healing cap having the geometric configuration of a narrow interface to fit a narrow implant according to a preferred embodiment of the present invention;

[0034] Fig. 16 shows an example of an Attachment Novaloc type component having the geometric configuration of a regular interface for coupling to a regular implant according to a preferred embodiment of the present invention; and

[0035] Fig. 17 shows an example of a component of type

[0010] 1574614 of 14 'Attachment equator' which presents the geometric configuration of a narrow interface to couple to a narrow implant according to a preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0036] The object of the present invention will be described and explained in more detail based on the attached drawings, which are merely illustrative and not limiting, since adaptations and modifications can be made without thereby escaping the scope of the claimed protection.

[0037] In a preferred embodiment, the dental component and implant system of the present invention basically comprises a set of implants and prosthetic components provided with a conical interface defined by specific geometries that prevent unsuitable prosthetic components—that is, those not specified for use with that particular implant—from mating and / or exhibiting torque when positioned on incompatible implants. This condition is achieved through a specific combination of the following characteristics: (i) type of prosthetic interface: narrow and regular; (ii) linear and angular dimensions of the coronal region of the interface; (iii) thread type; and (iv) thread diameter.

[0038] Figure 2 shows a regular interface implant 10, which is defined by a conical geometry 11 in its coronal portion, an anti-torsion geometry 12 and a transition chamfer 13 in its intermediate portion, and an internal thread 14 of constant diameter in the middle and apical portions of the implant 10. In the preferred embodiment presented in the present invention, the internal thread is configured to receive an M2.0 x 0.40 screw. An example of a prosthetic component 20 corresponding to the implant 10 is shown in Figure 3, in which it can be observed that the interface zone 21 has a conical geometry.

[0010] 1574614 of 14 with an angulation identical to that of angle α of the conical geometry 11 of implant 10. In addition, the prosthetic component 20 has a type 22 M2.0 x 0.40 thread with length L22. One condition to be taken into account in this case is that, for good fixation of the prosthetic component 20 in the regular implant 10, it is recommended that the thread portion of length L22 remains fixed / in contact with at least half of the length L14 of the internal thread 14 of the regular implant 10.

[0039] With such geometry, the coupling of a regular prosthetic component 20 with a regular implant 10 is perfectly accomplished, as shown in Fig. 4, which means that: (i) there is a seating with a good contact area C between the component 20 and the implant 10; (ii) the entire threaded portion of length L22 of the external thread 22 of the prosthetic component 20 is in contact with the internal thread 14 of the implant 10; furthermore, (iii) the length L22 is greater than or equal to half the length of the internal thread L14, and (iv) the contact that promotes coronal sealing of the assembly only occurs when the component 20 is fully threaded, providing a rigid, sealed, and secure installation, capable of preventing the penetration of substances into the internal interface of the implant and, consequently, minimizing the risk of bacteria and inflammation.

[0040] Figures 6 and 7 show, respectively, an implant with a narrow prosthetic interface 100 and a corresponding prosthetic component 120; that is, both have specific geometries to allow for perfect coupling and fixation with each other. As shown in Figure 6, the narrow implant 100 also has a conical geometry 111 in its coronal portion, an anti-torsion geometry 112 and a transition chamfer 113 in its intermediate portion, and a mid- and apical region with double internal threads, with the internal thread diameter 115 being larger at the apex.

[0010] 1574614 of 14 - which, in the example of preferred embodiment presented in the present invention, is of type M1.6 x 0.35 - smaller than the diameter of the internal thread 114 plus coronal - preferably of type M2.0 x 0.40. The prosthetic component 120 shown in Fig. 7 is also very similar to the regular prosthetic component 20, especially in its upper part, since it has an interface zone 121 of conical geometry. However, the lower abutment has a smooth cylindrical intermediate region 123 of length L123 and an external thread 122 (in the example, it is type M1.6 x 0.35) of length L122 only at its apical end, since the external thread 122 of the prosthetic component 120 collaborates only with the most apical internal thread 115 of the implant 100. Note that the length L122 of the external thread 122 must be greater than or equal to the length L115 of the apical internal thread 115 of the narrow implant 100.Therefore, the total length of the internal thread L114 + L115 of the narrow implant 100 must be equal to the total length of the cylindrical region and the external thread L123 + L122 of the narrow prosthetic component 120. Such geometry makes the proper contact C between the interface 121 of component 120 and the tapered geometry 111 of implant 100 occur only when the external thread 122 of component 120 is in contact with at least half of the extension L115 of the narrow implant 100 to promote proper fixation.

[0041] With such a configuration, the coupling and fixation between the narrow implant 100 and the narrow prosthetic component 120 is carried out as illustrated in the section reproduced in Fig. 8: (i) there is a seating with a good contact area C between the component 120 and the implant 100; (ii) the external thread 122 of the prosthetic component 120 is in contact with more than 50% of the length L115 of the internal thread 115 of the implant 100, which provides a rigid, sealed and patient-safe installation.

[0042] Figs. 5 and 9 demonstrate how the configuration

[0010] The geometric design of the system of the present invention, 1574614, prevents incompatible prosthetic components from being incorrectly installed on mismatched implants. Figure 5 shows what happens when, by mistake, an attempt is made to install a regular prosthetic component 20 on a narrow implant 100: when contact occurs in the diameter region D21 of the interface 21 with the conical geometry 111 of the narrow implant 100—contact that prevents the component from being inserted further into the implant 100—the external thread 22 (type M2.0 x 0.40) of the component does not even reach the beginning of the internal thread 114 (also type M2.0 x 0.40), so there is no torque in this installation and, consequently, the implantologist can immediately see that the selected component is not suitable for fixation to the implant already installed in the patient's dental arch.It should be noted that for this condition to be met, it is necessary that (i) at the point where the diameter Dm of the conical geometry 11 of the implant 10 has the same measurement as the diameter D21 of the component 20, the distance L111 must be at least slightly longer than the length L22 of the thread 22 of the prosthetic component 20, and (ii) the diameter D22 of the thread 22 is less than the diameter D114 of the apical thread 114 of the narrow implant 100. It is to prevent the occurrence of torque that there is a limitation of diameter D22 and length L22 on the thread 22 of the prosthetic component 20 as already mentioned, since a thread of larger diameter and length would possibly present a torque when coming into contact with the upper internal thread 114 of the narrow implant 100, which the present invention intends to avoid.

[0043] Conversely, in Fig. 9 it can be seen that if a narrow prosthetic component 120 is introduced into a regular implant 10, there is no contact because (i) the regular implant 10 has a conical geometry 11 with a diameter much larger than that of the interface region

[0010] 1574614 of 14 121 of the narrow component 120 and (ii) the pre-hole of the internal thread 14 of the regular implant 10 has a slightly larger diameter than the external diameter of the thread 122 of the prosthetic component 120. In one of the preferred embodiments of the invention, the internal thread 14 of the regular implant 10 is M2.0 x 0.40 - but with a pre-hole diameter slightly larger than the conventional one - while the external thread 122 of the narrow component 120 is M1.6 x 0.35; in this way, there is no possibility of contact that could lead the practitioner to think that there was torque in the improper coupling between these two parts and, therefore, it is easy to perceive that the chosen component is not suitable for the implant already installed.

[0044] Therefore, both the interface of the implants 10, 100 and their corresponding prosthetic components 20, 120 must have geometric configurations that comply with the following specific conditions:

[0045] When D111=D21, then L111>L22(1)

[0046] L22 >= L14 / 2(2)

[0047] Dii4>Dii5(3)

[0048] Li22>=Lii5(4)

[0049] L114 + Lii5= L123 + L122(5)

[0050] Figures 10 and 11 show, in isolation and respectively, the interface elements of the regular and narrow prosthetic components, in which these elements can have any upper portion to configure the most varied components that are generally used in implantology, such as, for example, the healing sleeves 30 and 300 illustrated in Figures 14 and 15, or the attachments 40, 400 of Figures 16 and 17. All of them have a lower zone with common geometries to fit only on the corresponding implants and thus eliminate the possibility of an incorrect installation

[0010] 1574614 of 14 inadequate. It should be clarified that the invention is not restricted to the exemplary formats and dimensions presented here, and other dimensional and functional compositions - especially with regard to prosthetic components - may be used under the conditions described herein, without thereby escaping the scope of the protection presented in the present invention.

[0010] 13 1574614 of 14 G. BREUER - 30525624826 Digitally signed by PORTALTRAM ITES - INPI Date: 2021.11.08 10:38:45 -03:00 Reason: Digitally Signed by the INPI Location: Buenos Aires, Argentina 1574614

Claims

1. A system of dental components and implants containing geometric configurations that only allow assembly between corresponding parts, said system comprising: at least one implant with a regular prosthetic interface (10) or at least one implant with a narrow prosthetic interface (100), wherein: the implant with a regular prosthetic interface (10) comprises a conical geometry (11), having at least one region with a coronal portion diameter (D11) in its coronal portion, anti-torsion geometry (12) in its intermediate portion, at least one female thread (14) with a female thread diameter (D14) wherein said female thread (14) has a female thread length (L14) extending from the coronal portion of the implant to the intermediate portion of the implant; the implant with a narrow prosthetic interface (100) comprises a conical geometry (111), having at least one region with a coronal portion diameter (D111) in its coronal portion,anti-torsion geometry (112) in its intermediate portion, and a first female thread (114) with a first female thread diameter (D114) and a first female thread length (L114) as well as a second female thread (115) with a second female thread diameter (D115) and a second female thread length (L115) in the middle and apical portion of the implant, said implant with narrow prosthetic interface (100) further comprises a first length (L111) which is the distance between the diameter region (D111) of the coronal portion and the beginning of the female thread (114), at least one prosthetic component with regular interface (20) or at least one prosthetic component with narrow interface (120) wherein: said at least one prosthetic component with regular interface (20) cooperates with the implant with regular prosthetic interface (10),said prosthetic component (20) comprises an interface region (21) located immediately above a region having an interface region diameter (D21) that cooperates with the conical geometry (11) of the regular prosthetic interface implant (10), and at least one male thread (22) having a male thread diameter (D22) and a male thread length (L22) that cooperates with said at least one female thread (14) of the regular prosthetic interface implant (10), said at least one narrow interface prosthetic component (120) cooperates with the narrow interface prosthetic implant (100),said prosthetic component with a narrow interface (120) comprises an interface region (121) with an interface region diameter (D121) that cooperates with the conical geometry (111) of the implant with a narrow prosthetic interface (100) and an interface region length (L121) defined as the height from the contact point of the prosthetic component (120) to the beginning of the first female thread (114) of the implant with a narrow prosthetic interface (100), and at least one male thread (122) having a male thread diameter (D122) and male thread length (L122) that cooperates with any one of a first female thread (114) or of the second female thread (115) of the implant with a narrow prosthetic interface (100), characterized in that said system comprises an interface with geometric features that only allow couplings between the implant with a regular prosthetic interface (10) and the prosthetic component with a regular interface (20),and between the implant with a narrow prosthetic interface (100) and the prosthetic component with a narrow interface (120), said geometric features are defined by: a female thread hole (14) of the implant with a regular prosthetic interface (10) having a diameter slightly larger than the outside diameter of the thread (122) of the prosthetic component with a narrow interface (120), and by the following equation encompassing the implant (100) and the regular prosthetic component (20), as well as also encompassing the regular implant (100) and the narrow prosthetic component (120): when D111 = D21, then L111 > L22 (1); L22 ≥ L14 / 2 (equation 2); D114 > D115 (equation 3), and L122 ≥ L115 (equation 4). Three claims follow.