A system of dental components and implants including geometric configurations that only allow assembly between corresponding parts

Abstract

The present invention belongs to the field of dentistry, more precisely implantology, and refers to a system of implants, components and prosthetic devices for mounting one or more prostheses, the interface of which has a shape that allows only the connection and fixation of the implant with its corresponding component, i.e., that prevents fixation between non-corresponding parts. The system includes an interface with a geometric feature that allows only a perfect connection between the implant (10, 100) and the prosthetic component (20, 120), the geometric feature being defined by the fact that the pre-bore of the internal thread (14) of the regular implant (10) has a diameter slightly larger than the outer diameter of the thread (122) of the prosthetic component (120), and by the following equation for the implant (100) and the prosthetic component (20): D 111 =D 21 ,L 111 >L 22 (1) L 22 >=L 14 / twenty two)

Description

[Technical Field]

[0001] The present invention belongs to the field of dentistry, more precisely implantology, and refers to a system of implants, components and prosthetic appliances for mounting one or more prostheses, the interfaces of which have a geometry that only allows the connection and fixation of the implant with its corresponding component, i.e., that prevents fixation between non-corresponding parts, thereby avoiding the occurrence of mounting errors that could cause serious inconvenience to the patient in the future. [Background technology]

[0002] As known by those skilled in the art, the process of installing dental prostheses to be implanted in patients with single or multiple edentulous areas requires drilling holes in the alveoli into which the implants previously selected by the implant specialist will be screwed, and the selection of the implant that is best suited to the case depends on several factors, such as the width and height of the bone available at the installation site.

[0003] Once the implant is installed, the prosthetic components must be attached, which forms the basis for the effective attachment of the dental prosthesis. For this purpose, the implant has an internal cavity that constitutes the component's bonding interface, which generally presents an internal thread at the tip or bottom to secure screws whose purpose is to keep the prosthetic components properly attached to the implant. In the central and cervical (or upper) parts of the implant's internal cavity, the walls are shaped in various shapes and are designed to promote complete attachment of the prosthetic components and therefore a proper seal between the parts, with the aim of preventing food waste and / or bacteria from entering and causing swelling, pain, bleeding, or inflammation in the area, resulting in serious inconvenience to the patient. Typically, it has a counter-rotation shape in the central region of the coupling interface and a neck shape that can exhibit a conical, vertical, or some other configuration.

[0004] There are several types and dimensions of implants, and several types of prosthetic components (CP), each intended for use with a specific implant model to promote a perfect bond and seal between the pieces. While manufacturers indicate the appropriate implant for use with each component, there are situations in which an inappropriate component can be fixed to an incompatible implant—it should be noted that this is inappropriate—facilitating a seemingly robust but flawed installation, as seen in the examples shown in Figures 1.1 and 1.2: there is contact (CT) between the parts, but insufficient fixation due to a small area of ​​the attached thread (R), or the entire thread (R) is attached but a persistent gap (V) between the component (CP) and the implant (I). In this case, the parts fit together, and the implant receives torque from the threaded area—which can also be a screw—but only for a few thread pitches; however, due to this poor fixation, the constant forces the system experiences during mastication can loosen the screw and break the component threads. This is a serious problem that can lead to component loss and requires removal of part of the broken screw so that at least the implant can be saved.

[0005] WO 2011 / 071228 is an example of a prior art approach aimed at increasing the contact area of ​​the threaded portion of the interface between the implant and the prosthetic component, believing that the best bonding and sealing conditions occur when the contact area of ​​the thread is greater than the contact area between the smooth surface of the prosthetic component and the neck region of the implant interface. The subject matter of JP 2005270334 also aims to improve the bonding between the implant and the prosthetic component, aiming to improve the fixation and sealing between the parts. However, both solutions only show good results when the prosthetic component is attached to a corresponding implant.

[0006] It is therefore observed that in the current state of the art, solutions have already been sought to improve the seal between implant and prosthetic components that belong to the same line, i.e. that have corresponding parts that must be used. However, no solution is known to the lack of suitable conditions of use when joining parts that do not correspond (simply due to incorrect selection or otherwise) but nevertheless appear to fit properly, especially if a torque can be applied during installation to secure the fixation screws. In other words, the current technology has not provided a means to prevent the apparent proper joining between non-corresponding parts as a way of providing greater safety, effectiveness and service life for the components used for the installation of dental implants. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] International Publication No. 2011 / 071228 [Patent Document 2] Patent Publication No. 2005270334 Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention therefore aims to provide an attachment geometry that allows only the correct prosthetic components to be attached to the implant.

[0009] It is therefore an object of the present invention to provide a dental component and implant system having an interface geometry that only allows assembly between corresponding parts. [Means for solving the problem]

[0010] Therefore, another of the primary objectives of the present invention is to provide a system of preferably narrow and regular placement dental components and implants, where a narrow line prosthetic component cannot be bonded to a regular implant, and vice versa.

[0011] Therefore, one of the objects of the present invention is to disclose a system of dental components and implants that only allows bonding between corresponding parts, facilitating the best possible fastening and sealing conditions for installation.

[0012] The present invention therefore relates to a system of dental components and implants comprising geometric configurations that only allow assembly between corresponding parts, the system comprising: - diameter (D 111 ) at least one region of substantially conical shape (11, 111), a contra-rotational shape (12, 112) in its middle portion, and a diameter (D 14 ,D 114 ,D 115 ) Length (L 14 ,L 114 ,L 115 At least one implant (10,100) including at least one internal thread (14,114,115) of length (L 111 ) is the diameter (D 111 ) is the distance between the area and the start of the female thread, and - at least one prosthetic component (20, 120) cooperating with said implant (10, 100), said prosthetic component (20, 120) having a substantially conical shape cooperating with the substantially conical shape (11, 111) of the implant (10, 100), and a diameter (D 21 ) interface area (21,121) and at least one diameter (D 22 ,D 122 ) Length (L 22 ,L 122 ) and including a male thread (22, 122) cooperating with at least one of the female threads (14, 114, 115) of the implant; provided that the system includes an interface having geometric features that allow only a complete connection between the implant (10, 100) and the prosthetic component (20, 120); The geometric characteristics are defined by the pre-bore of the internal thread (14) of the regular implant (10) having a diameter slightly larger than the outer diameter of the thread (122) of the prosthetic component (120) and by the following equation for the implant (100) and the prosthetic component (20): D 111 =D 21 , when L 111 >L 22 (1).

[0013] Preferably, the system further includes a geometric feature defined by the following formula: L 22 >=L 14 / 2 (formula 2); D 114 >D 115 (Equation 3), and L 122 >=L 115 (Equation 4).

[0014] The system can include an implant (10) with a regular prosthetic interface and an implant (100) with a narrow prosthetic interface, and can include a regular interface prosthetic component (20) and a narrow interface prosthetic component (120).

[0015] Ideally, the regular interface prosthetic component (20) cooperates only with the regular interface implant (10), and the external threads (22) of the prosthetic component (20) cooperate only with the internal threads (14) of the regular interface implant (10). The narrow interface prosthetic component (120) cooperates only with the narrow interface prosthetic implant (100), and the external threads (122) of the narrow interface prosthetic component (120) cooperate only with the internal threads (115) of the narrow interface implant (100). More preferably, the narrow interface prosthetic component (120) has a length L 123 The lower abutment includes a smooth cylindrical middle region (123).

[0016] The invention is explained in more detail below on the basis of examples of preferred embodiments shown in the accompanying drawings. [Brief explanation of the drawings]

[0017] [Figure 1] 1.1 and 1.2 show longitudinal cross-sections of two assemblies of prosthetic components that fit and torque the implant but are in fact non-compatible assemblies that can cause problems for both the parts and the patient. [Figure 2] 1 shows a partial cross-sectional view of a regular implant according to one preferred embodiment of the system of the present invention. [Figure 3] 3 shows a prosthetic component attached to the implant shown in FIG. 2. [Figure 4] 4 shows a partial longitudinal cross-sectional view of the connection of the prosthetic component of FIG. 3 with the implant of FIG. 2. [Figure 5] FIG. 4 shows a partial cross-sectional view of an attempted assembly of the prosthetic component of FIG. 3 onto a non-compatible / mismatched implant. [Figure 6] 10 shows a partial cross-sectional view of a narrow implant according to another preferred embodiment of the system of the present invention. [Figure 7] 7 illustrates a prosthetic component that can be attached to the narrow implant shown in FIG. 6. [Figure 8] 8 shows a partial longitudinal cross-sectional view of the coupling of the prosthetic component of FIG. 7 with the implant of FIG. 6. [Figure 9] FIG. 8 shows a partial cross-sectional view of an attempted assembly of the prosthetic component of FIG. 7 onto a non-compatible / mismatched implant. [Figure 10] Individually, only the interface area of ​​any regular prosthetic component that is attached to a regular implant in the system disclosed herein is shown. [Figure 11] Individually, only the interface area of ​​any narrow prosthetic component that may be attached to the narrow implant of the system disclosed herein is shown. [Figure 12] A cross-sectional view of a regular implant interface is shown. [Figure 13] A cross-sectional view of the narrow implant interface is shown. [Figure 14] 10 shows an example of a healing cap having a configuration in the shape of a regular interface for coupling to a regular implant, according to a preferred embodiment of the present invention. [Figure 15] 10 shows an example of a healing cap having a configuration in the shape of a narrow-narrow interface for coupling to a narrow implant, according to a preferred embodiment of the present invention. [Figure 16] 1 shows an example of a "Novaloc Attachment" type component illustrating the configuration of a regular interface shape for coupling to a regular implant according to a preferred embodiment of the present invention. [Figure 17]1 shows an example of an "Equator Attachment" component having a configuration in the shape of a narrow interface for coupling to a narrow implant, according to a preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0018] The object of the invention will now be explained and illustrated in more detail on the basis of the accompanying drawings, which are merely exemplary and non-limiting in nature, since adaptations and modifications can be made thereto without altering the scope of protection claimed.

[0019] In a preferred embodiment, the dental component and implant system of the present invention essentially comprises a set of implants and prosthetic components having a conical interface defined by a specific shape that does not allow inappropriate prosthetic components (i.e., those not indicated for use with that particular implant) to bind and / or torque when placed on an incompatible implant. Such a condition is obtained by a specific combination of the following features: (i) Prosthetic interface type: narrow and regular (ii) Linear and angular dimensions of the interface cervical region (iii) type of screw; and (iv) Screw diameter.

[0020] In Figure 2, a regular interface implant 10 is shown, which is defined by a conical shape 11 in its neck portion, an anti-rotation shape 12 and transition chamfer 13 in its midsection, and constant diameter internal threads 14 (in the preferred embodiment shown here, the internal threads are configured to receive M2.0x0.40 screws) in the central and apical portions of the implant 10. An example of a prosthetic component 20 corresponding to the implant 10 is shown in Figure 3, where it can be observed that the interface region 21 exhibits a conical shape tapered at the same angle α as the conical shape 11 of the implant 10. Additionally, the prosthetic component 20 has a length L 22 The condition to be observed in this case is that for a good attachment of the prosthetic component 20 to the regular implant 10, we need a length L 22 The threaded portion of the regular implant is 14cm long. 14 It is recommended that at least half of the

[0021] In such a configuration, the connection between the regular prosthetic component 20 and the regular implant 10 is complete as shown in FIG. 4, which means that: (i) there is a location with a good contact area C between the component 20 and the implant 10; (ii) the length L of the male thread 22 of the prosthetic component 20 22 the entire thread portion of the implant 10 is in contact with the female thread 14 of the implant 10; and (iii) Length L 22 is the female thread length L 14 More than half of the (iv) The contact that promotes sealing of the neck of the assembly occurs only when the components 20 are fully screwed in, which provides a tight, sealed and secure attachment and prevents the ingress of substances at the interface inside the implant, thereby greatly minimizing the risk of bacterial development and inflammation.

[0022] 6 and 7, it can be seen that the implant 100 with a narrow prosthetic interface and the implant 120 with a corresponding prosthetic component, respectively, exhibit specific geometries that allow for complete connection and fixation with each other. As shown in FIG. 6, the narrow implant 100 also exhibits a conical shape in its neck portion, an anti-rotation shape 112 and a passage groove 113 in its middle portion, and a central and apical portion with double internal threads, the diameter of the most distal internal thread 115 (in the exemplary preferred embodiment shown here, type M1.6x0.35) being smaller than the diameter of the most distal internal thread 114 (preferably type M2.0x0.40). The prosthetic component 120 shown in FIG. 7 also closely resembles the regular prosthetic component 20, mainly due to the conical interface 121 in its upper portion. However, the lower abutment has a length L only at its tip, since the external thread 122 of the prosthetic component cooperates only with the most distal internal thread 115 of the implant 100. 123 of a smooth cylindrical intermediate area 123 and length L 122 The male thread 122 has a length L (in the example, it is of type M1.6x0.35). 122 is the length L of the most distal female thread 115 of the narrow implant 100 115 It should be noted that the total female thread length L of the narrow implant 100 should be equal to or greater than the 114 +L 115 is the total length L of the cylindrical area and the male thread of the narrow prosthetic component 120 123 +L 122 It is understood that such a shape must be equal to the external threads 122 of the component. 115 Only when at least half of the component interface 121 is in contact with the conical shape 111 of the implant 100 will proper contact C occur between the component interface 121 and the conical shape 111 of the implant 100, facilitating proper fixation.

[0023] In such a configuration, the coupling and attachment between the narrow implant 100 and the narrow prosthetic component 120 occurs as shown in the section shown in FIG. 8: (i) There is a location with good contact area C between component 120 and implant 100 (ii) The male thread 122 of the prosthetic component is equal to the length L of the female thread 115 of the implant. 115 contact with over 50% of the patient's body, providing a strong, sealed and safe installation for the patient.

[0024] 5 and 9 illustrate how the geometric configuration of the system of the present invention prevents the improper installation of a mismatched prosthetic component onto a corresponding implant. Figure 5 illustrates what happens if a regular prosthetic component 20 is mistakenly installed onto a narrow implant 100: the diameter D of the interface 21 21 When this area contacts the conical shape 111 of the narrow implant 100 (a contact that prevents the component from going too deep inside the implant 100), the external thread 22 (type M2.0x0.40) of the component does not even reach the start of the internal thread 114 (also type M2.0x0.40), so there is no torque in this installation, and as a result the implantologist can immediately notice that the selected component is not suitable to be fixed to an implant that is already installed in the patient's dental arch. Note that in order to fulfill this condition, the following is necessary: (i) Diameter D of the implant cone shape 11 111 is the diameter D of component 20 21 At the point with the same measurement as 111 is at least the length L of the screw 22 of the prosthetic component 20 22 It needs to be slightly larger than (ii) Diameter D of the narrow implant tip screw 114 114 than the diameter D of the screw 22 22 is smaller. When contacting the narrow implant upper female thread 114, a screw of a larger diameter and length may exhibit torque, which is what the present invention seeks to avoid, and therefore, as already mentioned, to prevent torque from occurring, the prosthetic component screw 22 is provided with a diameter D22 and length L 22 There are limitations.

[0025] On the other hand, in FIG. 9, if a narrow prosthetic component 120 is introduced into a regular implant 10, (i) Regular implant 10 has a conical shape 11 with a diameter much larger than 120; (ii) It is observed that the pre-bore of the regular implant female thread 14 has a diameter slightly larger than the outer diameter of the prosthetic component thread 122, so that no contact occurs. In one preferred embodiment of the present invention, the female thread 14 of the regular implant 10 is M2.0 x 0.40 (but with a pre-bore diameter that fits the slightly larger dimensions than conventional), while the male thread 122 of the narrow component 120 is M1.6 x 0.35; thus, there is no opportunity for contact that would lead an expert to believe that torque has occurred in an improper connection between these two parts, and it is therefore easy to see that the selected component is not suitable for the implant that has already been installed.

[0026] Therefore, both the interface of the implant 10,100 and the corresponding prosthetic component 20,120 must have a geometric configuration that complies with certain conditions, as follows: D 111 =D 21 ,L 111 >L 22 (1) L 22 >=L 14 / twenty two) D 114 >D 115 (3) L 122 >=L 115 (4) L 114 +L 115 =L 123 +L 122 (5)

[0027] 10 and 11 show, separately, the interface elements of regular and narrow prosthetic components, respectively; such elements can have any upper part to constitute the most diverse components commonly used in implantology, such as, for example, the healing caps 30 and 300 shown in FIGS. 14 and 15, or the attachments 40, 400 shown in FIGS. 16 and 17. They all have a lower area with a common shape to fit only the corresponding implant, thus eliminating the possibility of improper attachment. It should be clear that the present invention is not limited to the exemplary shapes and dimensions presented here, and that other dimensions and functional configurations—especially with regard to the prosthetic components—can be used under the conditions described herein without departing from the scope of protection indicated here.

Claims

1. A system of dental components and implants including geometric configurations that allow only assembly between corresponding parts, the system including the following a) and b): a) an implant (10) with a regular prosthetic interface and an implant (100) with a narrow prosthetic interface, provided that: The implant (10) with the regular prosthetic interface Conical shape (11), An anti-rotation shape (12) in its middle part, and a female thread (14) having a female thread radius D 14 and a female thread length L 14 ; The implant (100) with the narrow prosthetic interface a conical shape (111) with a region of crown radius D 111 at its neck, Anti-rotation shape in the middle part (112) a central first internal thread (114) of radius D 114 and length L 114 ; and a second internal thread (115) at the tip of the shaft having a radius D 115 and a length L 115 ; L 111 is the distance between the area with the coronal radius D 111 and the start of the first internal thread (114); a) a prosthetic component (20) with a regular interface and a prosthetic component (120) with a narrow interface, provided that: The prosthetic component (20) having the regular interface comprises: completely bonded to the implant (10) having the regular prosthetic interface; an interface region (21) located immediately above the region of radius D 21 that perfectly blends with the conical shape (11) of the implant (10) with the regular prosthetic interface; and an external thread (22) having an external thread radius D 22 and an external thread length L 22 that completely engages with the internal thread (14) of the implant (10) having the regular prosthetic interface; The prosthetic component (120) having the narrow interface comprises: fully coupled with the implant (100) having said narrow prosthetic interface; an interface region (121) that fully mates with the conical shape (111) of the implant (100) with the narrow prosthetic interface; and The implant (100) having a narrow prosthetic interface includes an external thread (22) having an external thread radius D 22 and an external thread length L 22 that completely engages with the first internal thread (114) and the second internal thread (115). The system comprises: an interface having geometric features that only allow coupling between the implant (10) having the regular prosthetic interface and the prosthetic component (20) having one regular interface, and between the implant (100) having the narrow prosthetic interface and the prosthetic component (120) having the narrow interface; the geometric feature being the fact that the female thread (14) of the implant (10) with the regular prosthetic interface is larger than the outer diameter of the male thread (122) of the prosthetic component (120) with the narrow interface; and a system characterized by the following equation for an implant (100) having said narrow prosthetic interface and a prosthetic component (20) having said regular interface: D １１１ =D ２１ , when L １１１ >L ２２ (1) L ２２ >=L １４ / 2 (Formula 2); D １１４ >D １１５ (Equation 3), and L １２２ >=L １１５ (Equation 4).

2. The system described in claim 1, characterized in that the prosthetic component (20) having the regular interface is fully coupled only with the implant (10) having the regular prosthetic interface, and the male thread (22) of the prosthetic component (20) having the regular interface is fully coupled only with the female thread (14) of the implant (10) having the regular prosthetic interface.

3. The system described in claim 1, wherein the prosthetic component (120) having the narrow interface is fully coupled only with the implant (100) having the narrow prosthetic interface, and the male thread (122) of the prosthetic component (120) having the narrow interface is fully coupled only with the second female thread (115) of the implant (100) having the narrow prosthetic interface.

4. A system as described in any one of claims 1 to 3, characterized in that the prosthetic component (120) having the narrow interface includes a lower abutment including a smooth cylindrical intermediate region (123) of length L 123.

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