Internally-spanning epithelium abutment

Abstract

The utility model discloses an internal cross-epithelium abutment which is used as a device for connecting a dental implant and a dental restoration and is used for solving the problems related to the height and angle of the dental restoration. Comprising an abutment body rotationally symmetrical about its axis "a", the abutment body comprising: an upper region disposed at a first end of the abutment body, having an upper surface, a first outer wall, and a first cavity having a first inner wall; a lower region disposed at the second end of the abutment body having an externally threaded surface, and an intermediate region disposed between the upper region and the lower region having a second outer wall extending from the first outer wall to the externally threaded surface, and having a second cavity having a threaded inner wall immediately after the first cavity; the joint between the upper surface and the first outer wall is provided with an inclined plane.

Description

Technical Field

[0001] The utility model relates to the field of dental technology, and specifically to an internal trans-epithelial abutment, which is used as a device for connecting a dental implant and a dental restoration, and its main purpose is to solve problems related to the height and angle of the dental restoration; preferably, the internal trans-epithelial abutment is made of a biocompatible material and is anchored to the dental implant and formed as a whole with the dental implant. In particular, the interface device for fixing a prosthesis on a dental implant is installed on the maxilla and the mandible, and a dental restoration is connected thereto, and the dental restoration can be a crown or a tooth superstructure, such as a dental bridge or a complete denture. Background Art

[0002] Today, dental implant technology allows tooth roots to be replaced by biocompatible dental implants, which are usually made of some kind of titanium alloy and attached to a corresponding denture or artificial tooth.

[0003] Generally speaking, the process of implanting the dental implant includes an initial dental implant insertion phase, followed by an intermediate bone integration phase requiring a waiting period, and finally a final prosthesis fixation phase.

[0004] Before the final prosthesis is fixed, a temporary prosthesis that is as similar as possible to the final prosthesis can be placed on the implant, which allows early use of said prosthesis with or without functional loads, but with immediate esthetic functionality. The transepithelial abutment is the fixed part that protrudes from the mouth. In other words, it is the component that ensures that the dental implant and the crown fit and are connected to each other, thus supporting the prosthesis.

[0005] The technology available today allows said attachment of a crown or anatomical prosthesis by means of adhesive cements or screw-retained cements, which results in cemented or screw-retained prostheses, and where standard abutments or custom-made prostheses are prefabricated in titanium - usually manufactured using mainly CAD-CAM methods.

[0006] Although today there have been considerable advances in surgical techniques for implant placement and positioning, with the advent of surgical guidance systems, and pre-planning through CT-type radiographic methods, previously formed techniques for positioning implants in the bone, the final position of the implant will always depend on the bone structure and insertion position generated by the osseointegration process, from the antagonistic position of implant placement to the tilted position of the implant, which usually ranges between 0° and 45°, the latter being the most important disadvantage. And it is impossible to provide all straight abutments and angled abutments manufactured in a standard way to solve all the defects that occur in implant restorations through their corresponding prostheses. Among the restorative solutions, transepithelial abutments are one of the most highly regarded products by users. These abutments act as an attachment between the implant and the crown or prosthesis (complete prosthesis, crown or bridge), with different characteristics and advantages that can increase the precision and comfort of dental surgery and prevent possible complications.

[0007] The Full Quad Technique is an implant technique that stands out from the known techniques by addressing the entire arch with only 4 implants and placing a fixed prosthesis along the entire arch on the day of surgery. This system usually uses transepithelial abutments, combined with angled and / or straight abutments depending on the anatomy required for the restoration to address the case being examined.

[0008] Therefore, the main object of the present invention relates to a straight transepithelial abutment with internal connections, which allows the insertion of multiple prostheses therein, wherein the angles between the implants diverge between 0° and 60°. Utility Model Content

[0009] The invention therefore relates to an internal transepithelial abutment with internal connections and which can have multiple gingival heights. Likewise, the abutment has different couplings depending on the dental implant system to which it is applied, i.e. it is directly connected to an endosseous dental implant. The abutment allows preferably connecting or inserting multiple prostheses with an angular deviation between the implants of between 0° and 60°. The abutment object of the invention is particularly designed for multiple prosthetic restorations and single crowns.

[0010] The first object of the utility model is to provide a trans-epithelial abutment connected between a tooth structure and a dental implant, and the material of the trans-epithelial abutment is preferably a biocompatible material. Specifically, the trans-epithelial adjacent object of the utility model includes an abutment body rotating around an axis "a", which has a first area or upper area arranged at the first end of the body, having a preferably flat upper surface, a first outer wall, and a first cavity having a first inner wall; a third area or lower area, arranged at the second end of the abutment body, having an external threaded surface; and a second area or middle area, arranged between the upper area and the lower area, having a second outer wall extending from the first outer wall to the external threaded surface, and having a second cavity immediately after the first cavity, the second cavity having an internal threaded surface; the attachment between the upper surface and the first outer wall has a bevel or an external bevel.

[0011] Preferably, the dental structure, which is understood to mean the dental restoration and those parts required for its connection to the transepithelial abutment, which is screwed to the dental implant, will be arranged only on the bevel. For example, the element may be an interface to which the prosthesis is glued, the assembly being subsequently screwed to the transepithelial abutment, which was previously screwed to the dental implant.

[0012] Sometimes it may be necessary to use an intermediate component, mainly in the case of multiple prostheses, i.e., the prostheses are connected to multiple bone dental implants, not just one. In these cases, a tubular component similar to a bushing is arranged in the first cavity of the adjacent object of the utility model, and the bushing has an upper end protruding above the first cavity to support on the outer bevel of the trans-epithelial adjacent object. The interface of the utility model with the bone cement denture can be introduced into the interior of the bushing, and then, the screw is tightened after passing through the structure, the prosthesis and the interface, so that the dental restoration is mounted on the base. The base is fixed in advance inside the implant by screwing the outer threaded surface of the base into a dental implant with complementary threads. To this end, a screwdriver is used, the head of which is complementary to the inner wall of the first cavity, so that the outer threaded surface of the base can be rotated into the cavity of the dental implant.

[0013] The bushing or intermediate portion between the dental restoration and the first cavity of the abutment enables the structure to be rotated relative to the abutment, which simplifies the operation in case a plurality of prostheses need to be connected to various implants.

[0014] Preferably, the first cavity is larger than the second cavity.

[0015] In a preferred alternative, the first outer wall is flat, with a constant diameter. In another preferred alternative, the first inner wall of the first cavity has a non-circular geometric profile for connecting a screwdriver head, allowing the outer threaded surface of the abutment to be rotated into the dental implant when the screwdriver head is introduced into the first cavity. Preferably, the geometric profile has at least two recesses and two protrusions, the recesses and protrusions preferably being lobular, wherein it may also have three, four, five, six and eight recesses and protrusions. More preferably, the geometric profile is hexalobular, with six recesses and six protrusions of leaf shape alternating with each other.

[0016] In a preferred configuration, the diameter of the first outer wall is greater than the diameter of the second outer wall. More preferably, the diameter of the second outer wall decreases between the first outer wall and the outer threaded surface.

[0017] The lower portion of the second outer wall immediately before the outer threaded surface has a shape complementary to a connection region of the dental implant, is introduced into the housing of the dental implant, and the connection region varies depending on the connection type of the dental implant.

[0018] The lower portion of the second outer wall can be rotating or non-rotating, depending on the connection of the dental implant. The threads of the outer threaded surface are the same as the threads of the inner shell of the dental implant. Similarly, the upper portion of the second outer wall after the first portion (which is the portion protruding above the dental implant) can have different external shapes, such as a cone, an ellipse with a radius profile, or a combination thereof, so as to be shaped according to the required shape. Similarly, the height of the upper portion of the second outer wall mainly determines the height of the gums, and therefore, an abutment with one or another height will be used depending on the patient's gum height. The height can vary and preferably has a length between 0.3 mm and 7 mm.

[0019] According to the foregoing, the transepithelial abutment object of the present invention is composed of a single body despite having different regions. As described above, the abutment is properly screwed onto the implant until it is properly fixed and biologically closed in a predetermined position between the abutment and the implant. The pressure usually applied between them to prevent them from rotating is preferably between 15 and 40 N·cm.

[0020] The inclined surface between the upper surface and the first outer wall acts as a support surface, maintaining a constant dimension around the upper region of the abutment body so that the denture or tooth structure on the abutment can be better supported. This bevel can have different diameters, depending on the tooth structure or dental abutment located thereon. Depending on the circumstances of each case, a narrower support surface is more aesthetically pleasing than a wider support surface, wherein the diameter of the first outer wall is preferably between 2.5 mm and 6 mm.

[0021] The inclined support surface with a constant support dimension along the entire first area allows to improve the biological seal between the denture or tooth structure and the abutment due to a larger and better contact surface between the mentioned elements due to the fact that the contact is achieved with a slope inclined relative to said upper surface. The upper surface is preferably flat and perpendicular to the axis of rotation of the abutment body and the inclined surface forms an angle with the axis of the abutment between 1° and 89°, preferably between 30° and 70°, more preferably between 40° and 60°, even more preferably 50° with said axis of rotation.

[0022] Preferably, the attachment between the first inner wall of the present invention and the upper surface of the adjacent object also has an inclined surface therebetween, thereby facilitating better insertion of the denture or structure into the first cavity.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] Increasing the contact surface between a dental restoration, or a dental structure, or an intermediate part of a dental restoration and a structure and the transepithelial abutment, improving said contact surface, achieving improved biological closure, and reducing the gingival height of the assembly formed by the transepithelial abutment and the dental restoration or structure. The assembly mounted to this transepithelial abutment can be identical for fixing all implant compatibility, depending only on whether it is for a complete 30 prosthesis, a bridge or a single crown, such as a healing cap, a straight or dynamic abutment element, a CAD / CAM structure, etc.

[0025] The transepithelial abutment of the utility model is designed to be used for the upper jaw or the lower jaw and to support tooth replacements to restore chewing function and aesthetics. The abutments are combined with endosseous implants and are suitable for multiple restorations and single tooth restorations.

[0026] In the present invention, the term "bevel" should be interpreted as a plane that is arranged instead of a corner and connects two angled surfaces. Similarly, the bevel is a continuation of the previous plane, forming a surface connecting two angled surfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a first stereoscopic view of the internal trans-epithelial abutment disclosed in the utility model;

[0028] Figure 2 It is a first stereoscopic view of the internal trans-epithelial abutment disclosed in the utility model;

[0029] Figure 3 It is a front view and a cross-sectional view of the internal trans-epithelial abutment disclosed in the utility model;

[0030] Figure 4 A top view of the internal trans-epithelial abutment disclosed in the utility model;

[0031] Figure 5 It is a schematic diagram of the connection between the internal trans-epithelial abutment and the dental implant disclosed in the utility model;

[0032] Figure 6 The utility model discloses a connection diagram of an internal trans-epithelial abutment, a dental implant and a dental restoration.

[0033] In the figure:

[0034] A, upper area, B, middle area, C, lower area; P, dental restoration;

[0035] 20. First outer wall; 25. Second cavity; 30. Second outer wall; 40. External threaded surface; 50. First cavity; 60. Inclined surface; 65. Upper surface; 70. Six-flowered shape; 80. Screwdriver; 90. Dental implant; 91. Cavity; 92. Intermediate element; 95. Interface component; 96. Screw. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] The utility model is further described in detail below in conjunction with the accompanying drawings:

[0038] like Figure 1 , 2 As shown, the utility model provides an internal trans-epithelial abutment, in particular a straight internal trans-epithelial abutment, for connecting a dental restoration and a dental implant, that is, the dental restoration is fixed on the trans-epithelial abutment, and the trans-epithelial abutment is fixed on the dental implant; it has an abutment body relative to the axis "a", and the abutment body has three different areas, namely: a first area or upper area A, a second area or middle area B and a third area or lower area C; wherein,

[0039] The first area or upper area A is arranged at the first end of the base body and has an upper surface 65, a first outer wall 20 and a first cavity 50 with a first inner wall, the upper surface 65 is flat, and the first outer wall 20 is a flat outer wall structure with a constant diameter. There is an inclined surface 60 between the flat upper surface 65 and the first outer wall 20. Preferably, the flat upper surface 65 is perpendicularly arranged at 90° to the axis "a" of the base body. Preferably, the connection between the first cavity 50 and the flat upper surface 65 also has an inclined surface 60, and the angle between the inclined surface 60 and the axis "a" is 1° to 89°, preferably between 30° and 70°, more preferably between 40° and 60°, and even more preferably 50°. The first inner wall of the first cavity 50 has a geometric shape preferably in the form of a hexagonal flower 70, which is used to introduce the head of a screwdriver 80 having a complementary outer surface. During assembly, the hexagonal head of the screwdriver 80 is placed in the first cavity 50, so that the abutment can be screwed into and fixed on the dental implant 90. Figure 6 The final dental structure, sintered metal component or reprocessed or milled component and other dental restoration P are connected to the interface component 95 or the base body by screws 96, as shown in FIG. Figure 6 As shown, it will be placed on the first end of the abutment body, specifically on the outer inclined surface 60 between the first outer wall 20 and the upper surface 65.

[0040] After the first or upper region A, a second or intermediate region B is arranged after the first or upper region A; the intermediate region B has a second outer wall 30 extending after the first outer wall 20. Similarly, the intermediate region B also has a second cavity 25 with a threaded inner wall immediately after the first cavity 50, such as Figure 3 shown.

[0041] Subsequently, after the intermediate region B, a third region or lower region C is arranged as a continuation of the second outer wall 30 and terminates in an outer threaded surface 40. This outer threaded surface 40 is intended to be introduced into a cavity 91 of a dental implant 90, the lower part of the cavity 91 being provided with an inner threaded surface cooperating with the outer threaded surface 40 to connect the abutment to the dental implant 90. The upper part of the cavity 91 of the dental implant 90 also accommodates the lower part 35 of the second outer wall 30 of the abutment body. The lower part 35 of the second outer wall 30 of the abutment body has a geometry or surface complementary to the geometry or upper surface of the cavity 91 of the dental implant 90, the two complementary surfaces varying depending on the type of connection of the dental implant 90. In order to introduce the abutment into the cavity 91 of the dental implant 90, the outer threaded surface 40 of the abutment is screwed into the cavity 91 with the aid of a screwdriver 80, as shown. Figure 6 shown.

[0042] Figure 2 , 3It shows how to form a second cavity 25 with a threaded inner wall in the second cavity 50, and a screw 96 is screwed into the second cavity 25 to achieve the fixation of the dental restoration to the abutment body. The lower part 35 of the second outer wall 30 is also shown in this figure, and the geometry of the lower part 35 will depend on the type of dental implant 90 connected to the abutment, wherein the outer threaded surface 40 protrudes from below.

[0043] In addition to the front view, Figure 3 Also shown is a cross section of a transepithelial abutment as viewed in accordance with the specification; in particular, the figure shows a second cavity 25 with a threaded inner wall into which a screw 96 is coupled after the introduction of a dental restoration or before another dental component is introduced into the structure, which screw 96 will secure the tooth structure to the abutment, as shown in FIG. Figure 6 Likewise, an external threaded surface 40 is observed that allows coupling with a dental implant 90 .

[0044] The transepithelial abutment has an upper support surface with a bevel 60, on which a tooth structure or a possible dental restoration connected to the abutment will be supported. Alternatively, the tooth structure or a possible dental restoration can be supported on a flat upper surface 65. Thus, a constant and balanced support of the dental restoration P is maintained, which will lead to an improved seating of the dental restoration P on the abutment, especially a better stability of the support when the dental restoration P is supported on the bevel 60. The inclined support bevel 60 has an inclination, because in critical cases the dental restoration P supported thereon will have a wide insertion of up to 60°.

[0045] As described above, the lower portion 35 of the second outer wall 30 located below the inclined support ramp 60 will depend on the type of dental implant 90 to which the abutment will be coupled, and more specifically on the type of abutment and the type of connection of the dental implant 90); because the abutment and the lower portion 35 of the second outer wall will be fixed to the maxillary or mandibular dental implant 90, the other is introduced into the cavity 91 of the implant 90. Therefore, the design of the second outer wall 30 and its lower portion 35 or the connection with the dental implant 90 will vary depending on the type of dental implant 90 to be used and the type of dental implant. At the same time, the outer threaded surface 40 also depends on the type of dental implant 90.

[0046] Figure 4 A cross section of the first cavity 50 is shown, which is a hexagram 70 in this example, wherein the height or depth of the cavity is at least 1 mm. The total length of the abutment can vary according to the required gum height, preferably with the upper portion of the second outer wall 30 being higher than the dental implant 90 according to the height requirement.

[0047] Figure 5The connection of the abutment body of the present invention on the dental implant 90 is shown. Specifically, the second outer wall 30, in particular the lower portion 35 of the second outer wall 30, is located inside the cavity 91 of the dental implant 90, so that the geometry of the lower portion 35 is consistent with the complementary shape of the upper portion of the cavity 91 of the dental implant 90. Subsequently, the outer threaded surface 40 of the abutment body is screwed into the inner thread of the cavity 91 of the dental implant 90. In addition, the dental restoration (such as a denture) P can be placed directly on the upper surface of the abutment, for example by bonding, and the denture is preferably supported on the inclined surface 60, although optionally, it can also be supported on the upper surface 65. Alternatively, it can have another dental device, such as an interface component 95 that acts as an interface between the abutment and the dental restoration P, however, the interface component 95 is also preferably supported on the inclined surface 60. However, alternatively, the interface component 95 can also be supported on the flat upper surface 65. The upper surface, the bevel (60, 65), on which the tooth structure or other possible tooth components are supported, maintains its geometry by maintaining the same surface along its entire perimeter. Thus, with this geometry and configuration, it is possible to achieve a greater support of the abutment for the structures and complementary parts mounted thereon, thereby improving biological closure and the distribution of different chewing loads of the tooth structure arranged on the abutment and towards the tooth base.

[0048] Figure 5 Specifically, between the upper dotted line passing through at about the height of the lower portion of the inclined surface 60 and the subsequent dotted line passing through at about the height of the upper end of the dental implant 90 .

[0049] Figure 6 It is shown that an interface component 95 or other connecting member is fixed to the first area A of the base body of the utility model. The trans-epithelial base has been screwed to the internal thread of the cavity 91 of the dental implant 90 in advance through its external thread surface 40. The artificial tooth or tooth P is preferably arranged on the interface component (intermediate dental element) 95 by bonding. The intermediate dental element or interface component 95 is preferably supported on the inclined surface 60, so as to maintain a constant size in the upper part of the base. In order to fasten the intermediate dental element or interface component 95 and the artificial tooth P, a screw 96 with an internal thread in the second cavity 25 of the base is used, which passes through the two and is screwed into the base. Tightening is done with a screwdriver 80, which allows tilting between 0° and 30°, that is, tilting between the axis "a" and the axis "b" of the trans-epithelial base and the components of which it is a part.

[0050] like Figure 6As shown, in this example, an intermediate element 92 arranged between the interface component 95 and the support is also shown. The intermediate element 92 is particularly suitable for the case of multiple prostheses, that is, connected to 35 different bone dental implants 90 instead of just one prosthesis. In these cases, the intermediate element 92 can be a sleeve-shaped tubular component arranged inside the first cavity 50 of the base, and the sleeve has an upper end protruding above the first cavity 50. It is supported on the outer bevel 60 of the trans-epithelial base. The interface component 95 with the prosthesis P can be introduced into the sleeve, and then, by means of a first screw 96 passing through the structure, the prosthesis and the interface, the structure will be installed by screwing the first screw 96 into the second cavity 25 with the threaded inner wall of the base and connecting the dental restoration to the base. The sleeve 92 or intermediate component arranged between the first cavity 50 of the structure and the support makes it possible to rotate the structure relative to the support, which simplifies the operation when the support needs to be connected.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An internal trans-epithelial abutment for connecting a dental implant to a dental restoration, characterized in that: The base body is rotationally symmetrical about its axis "a", and the base body comprises: an upper region (A) disposed at a first end of the base body, having an upper surface (65), a first outer wall (20) and a first cavity (50) having a first inner wall; a lower region (C), disposed at the second end of the abutment body, having an externally threaded surface (40), and an intermediate region (B), arranged between the upper region (A) and the lower region (C), having a second outer wall (30) extending from the first outer wall (20) to the outer threaded surface (40), and having a second cavity (25) with a threaded inner wall immediately after the first cavity (50); The upper surface (65) is connected to the first outer wall (20) via an inclined surface (60).

2. The base according to claim 1, characterized in that The first cavity is larger than the second cavity.

3. The base according to claim 1, characterized in that The first outer wall (20) is a flat outer wall structure with a constant diameter.

4. The base according to claim 1, characterized in that The first inner wall of the first cavity (50) describes a non-circular geometric profile.

5. The base according to claim 4, characterized in that The geometric profile of the first inner wall has at least two recesses and two protrusions.

6. The base according to claim 5, characterized in that The recesses and projections are lobulate.

7. The base according to claim 5 or 6, characterized in that: The geometric profile of the first inner wall is a hexagram shape, having six concave portions and six protrusions that alternate with each other.

8. The base according to claim 1, characterized in that The diameter of the first outer wall (20) is greater than the diameter of the second outer wall (30).

9. The base according to claim 1, characterized in that: The diameter of the second outer wall (30) decreases between the first outer wall (20) and the outer threaded surface (40).

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