Universal height-adjustable dental implant healing abutment

Abstract

The utility model relates to the technical field of oral implantation, in particular to a universal height-adjustable dental implant healing abutment which comprises a main abutment and a height adjusting table, one end of the main abutment is provided with a connecting section used for being connected with an implant, the other end of the main abutment is provided with a threaded hole, and one end of the height adjusting table is provided with a threaded rod extending outwards. The threaded rod is in threaded connection with a threaded hole in the main base table, and the other end of the height adjusting table is of a square structure and used for being matched with an installation tool. The end face of the main base table and the end face, making contact with the main base table, of the height adjusting table are each provided with a plurality of anti-loose wedge-shaped faces, and the two anti-loose wedge-shaped faces are meshed with each other. The utility model can solve the technical problem that the connection stability of the healing abutment is reduced due to the fact that the existing two-section abutment adopts screw connection and is easy to loosen and concentrated in stress in the long-term use process.

Description

TECHNICAL FIELD

[0001] The utility model relates to oral implant technology field, concretely is general adjustable height implant tooth healing base. BACKGROUND

[0002] The second stage of implant surgery is usually carried out after the implant is implanted into the alveolar bone and a period of healing, and the main purpose is to install the healing base on the implant to guide the healing of the soft tissue around the implant and lay the foundation for the subsequent installation of permanent restoration. At present, the common healing bases on the market are mostly several fixed models, and the common height specifications are 3mm, 5mm, 7mm, etc. In actual clinical application, due to the unique nature of the oral condition of each patient, there are obvious differences in alveolar bone height, gum thickness and implant implantation depth, and it is difficult for the fixed model healing base to achieve precise fitting when facing these diversified oral conditions.

[0003] The prior art CN215130540U discloses a split two-section personalized scanable healing base, which comprises an implant, a main base and a secondary base, the implant and the main base are connected by a center screw, and the main base and the secondary base are connected by a secondary screw; by setting the secondary base, and the secondary base has different heights, and the secondary base with different heights is connected with the main base by the secondary screw, so as to adapt to different gingival penetration heights of patients. Although the above-mentioned prior art can realize certain height adjustment, the following technical problems still exist in actual use:

[0004] 1. The environment in the oral cavity is complex, and the vibration and force generated by the patient in daily activities such as chewing and speaking will cause the base to be subjected to continuous dynamic load, which will cause the screw to wear and loosen, and the tightness of the connection between the main base and the secondary base will be greatly reduced, which will eventually affect the fixing effect of the healing base on the implant, and interfere with the normal healing and repair process of the soft tissue around the implant.

[0005] 2. The secondary screw connection point is prone to stress concentration under stress, for example, when the patient accidentally bites hard objects, under the action of lateral occlusal force or sudden impact force, the stress will be concentrated at the screw part, which may cause the screw to deform and loosen, thereby damaging the connection between the main base and the secondary base, increasing the risk of implant surgery failure, and also may cause damage to the implant and surrounding tissue. UTILITY MODEL CONTENTS

[0006] The utility model provides general adjustable height implant tooth healing base, can solve the technical problem that the two-section base of prior art adopts screw connection and is prone to looseness and stress concentration in the long-term use process, and further causes the connection stability of healing base to decline.

[0007] The present application provides the following technical solutions:

[0008] The general adjustable height implant tooth healing abutment comprises a main abutment and a height adjustment abutment, one end of the main abutment is provided with a connecting section for connecting with an implant, the other end is provided with a threaded hole, one end of the height adjustment abutment is provided with an outwardly extending threaded rod, the threaded rod is threadedly connected with the threaded hole on the main abutment, the other end of the height adjustment abutment is a square structure for cooperating with an installation tool; a plurality of anti-loosening wedge surfaces are arranged on the end face of the main abutment and the end face of the height adjustment abutment in contact with the main abutment, and the two groups of anti-loosening wedge surfaces are engaged with each other.

[0009] Technical principle: the anti-loosening wedge surfaces on the end faces of the main abutment and the height adjustment abutment are engaged with each other, when subjected to an axial force (such as downward pressure on the abutment), the wedge surfaces generate a radial component force, which increases the pressure between the two end faces, thereby increasing the friction force between the end faces, and the friction force generated by the threaded connection acts together to greatly improve the anti-loosening ability of the connection. In addition, the angle design of the anti-loosening wedge surfaces usually has a self-locking feature, when subjected to an external force trying to rotate the height adjustment abutment relative to the main abutment, the self-locking angle of the wedge surface will prevent such relative rotation. Finally, the engaged anti-loosening wedge surfaces can limit the relative movement between the height adjustment abutment and the main abutment, when the abutment is subjected to external forces in various directions, the engagement structure of the wedge surfaces can prevent the relative rotation and axial movement between the two components, so that the entire healing abutment structure becomes a more stable whole, effectively resisting the influence of external forces on the stability of the connection.

[0010] Beneficial effects:

[0011] 1. By arranging the anti-loosening wedge surfaces, the connection between the main abutment and the height adjustment abutment is more stable and reliable, compared to the existing screw connection, the long-term stability of the healing abutment on the implant is improved, which is beneficial to the healing and repair of the tissue around the implant.

[0012] 2. The healing abutment is composed of a main abutment and a height adjustment abutment, during use, the doctor can adjust the height of the abutment according to the thickness of the patient's gum, thereby better meeting the individual needs of different patients, which is beneficial to reducing the number of surgical adjustments due to inappropriate abutment height, shortening the operation time and improving the clinical work efficiency.

[0013] 3. The free end of the height adjustment abutment is a square structure, which is convenient for cooperating with the installation tool for disassembly and assembly, improving the convenience of surgical operation; in addition, the end of the height adjustment abutment located in the upper segment of the gum is not provided with a threaded hole, the surface is smoother, compared to the existing healing abutment whose surface is a screw cap, the smooth structure of the present application is more convenient to clean and reduces bacterial growth.

[0014] Further, the fine adjustment gasket is provided with anti-loosening wedge surfaces on the upper and lower connecting surfaces, and the anti-loosening wedge surfaces on the upper and lower connecting surfaces of the fine adjustment gasket are respectively engaged with the anti-loosening wedge surfaces on the main base and the height adjustment base.

[0015] Advantages:

[0016] 1. The addition of the fine adjustment gasket further improves the height adjustment accuracy. In actual application, there may be a situation that the combination of the height adjustment base and the main base cannot meet the extremely precise height requirement, while the fine adjustment gasket can provide a smaller height adjustment increment, for example, only a few tenths of a millimeter or even smaller, which is very important for some cases with extremely high requirements for soft tissue around the implant and can better adapt to the small individual differences in different patients' oral cavities.

[0017] 2. The fine adjustment gasket can be used as a compensation means. When it is found that the height changes slightly due to wear and tear, the height accuracy of the healing abutment can be restored by replacing or adjusting the position and number of the fine adjustment gaskets, thereby prolonging the service life of the healing abutment and ensuring its stability and reliability during long-term use. In addition, it may be necessary to temporarily decide whether to add or replace the fine adjustment gasket according to the actual observed soft tissue situation in clinical surgery to achieve the best healing effect. This flexibility enables doctors to better cope with various complex clinical situations and improve the success rate of surgery and patient satisfaction.

[0018] Further, the outer end surface of the threaded hole of the main base is provided with an internal hexagonal wrench hole.

[0019] Advantages: The internal hexagonal wrench can be used to install the main base on the implant in the oral cavity. Compared with using only a screwdriver to extend into the threaded hole and rotate into place, and then installing the main base on the implant, the present application can reduce the wear of the screwdriver and the threads in the threaded hole, and avoid the problem that the main base is pulled out of the implant when the screwdriver is withdrawn, affecting the stability of the main base connected to the implant.

[0020] Further, the height adjustment base is further provided with a secondary threaded hole for connecting with the threaded rod of another height adjustment base.

[0021] Advantages: By providing a secondary threaded hole, the height of the height adjustment base can be further increased, and the height of the healing abutment can be further adjusted by adding or subtracting the number of height adjustment bases.

[0022] Further, the end of the main base close to the connecting section is a tapered surface.

[0023] Advantages: The main base is installed in the transgingival section, and the end close to the implant is set as a tapered surface, which is conducive to guiding the attachment growth of the gum tissue.

[0024] Further, two sets of fine adjustment shims are included, the two sets of fine adjustment shims are engaged by anti-loosening wedge surfaces, and the other surfaces of the two sets of fine adjustment shims are respectively connected to the main base and the height adjustment base by plane friction. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 Structure diagram of the main base in Example 1;

[0026] Figure 2 Structure diagram of the height adjustment base in Example 1;

[0027] Figure 3 Top view of Figure 2

[0028] Connection diagram of the main base and the height adjustment base in Example 1; Figure 4

[0029] Connection diagram of the main base and the height adjustment base in Example 1 with fine adjustment shims arranged therebetween; Figure 5

[0030] Connection diagram of the main base and the height adjustment base in Example 2; Figure 6

[0031] Connection diagram of the main base and the height adjustment base in Example 3. Figure 7 DETAILED DESCRIPTION

[0032] The following will be further described in detail through specific embodiments:

[0033] The marks in the drawings of the specification include: main base 1, connection section 11, tapered surface 111, threaded hole 12, inner hexagonal wrench hole 121, height adjustment base 2, threaded rod 21, square structure 22, anti-loosening wedge surface 3, fine adjustment shim 4, and intermediate base 5.

[0034] Example 1

[0035] As shown in the drawings, the universal height-adjustable implant abutment includes a main base 1 and a height adjustment base 2. One end of the main base 1 is provided with a connection section 11 for connecting with an implant, and the other end is provided with a threaded hole 12. The connection section 11 is used for connecting with the implant. More preferably, in this embodiment, the end of the main base 1 close to the connection section 11 is a tapered surface 111, which is conducive to guiding the growth of gingival tissue. Figures 1-2

[0036] ​​The outer end surface of the threaded hole 12 of the main abutment 1 in the embodiment is provided with an internal hexagonal wrench hole 121, which facilitates the use of an internal hexagonal wrench to install the main abutment 1 on the implant in the oral cavity. Compared with the use of only a screwdriver to extend into the threaded hole 12 and rotate into place, and then install the main abutment 1 on the implant, the application can reduce the wear of the screwdriver and the threads in the threaded hole 12, and avoid the problem of the main abutment 1 being pulled out of the implant when the screwdriver is withdrawn, affecting the stability of the connection of the main abutment 1 on the implant.

[0037] As shown in Figures 2-3 , one end of the height adjustment platform 2 is provided with an outwardly extending threaded rod 21, which is threadedly connected with the threaded hole 12 on the main abutment 1. The other end of the height adjustment platform 2 is a square structure 22, which is used to cooperate with the installation tool. More preferably, the height adjustment platform 2 includes two parts. The end in contact with the main abutment 1 has the same diameter and shape as the main abutment 1. The part located on the upper segment of the gum has a hexagonal or octagonal structure.

[0038] By providing the other end of the height adjustment platform 2 with a square structure 22, it is convenient to cooperate with the installation tool for disassembly and assembly, improving the convenience of surgical operation. In addition, the end of the height adjustment platform 2 located on the upper segment of the gum is not provided with a threaded hole 12, so the surface is smoother. Compared with the existing healing abutment with a screw cap, the smooth structure of the application is more convenient to clean and reduces bacterial growth.

[0039] As shown in Figure 4 , the end surface of the main abutment 1 and the end surface of the height adjustment platform 2 in contact therewith are both provided with a plurality of anti-loosening wedge surfaces 3. The two sets of anti-loosening wedge surfaces 3 are engaged with each other. When subjected to an axial force, the wedge surfaces will generate a radial component force, increasing the pressure between the two end surfaces, thereby increasing the frictional force between the end surfaces. In addition, the engaged anti-loosening wedge surfaces 3 can limit the relative movement between the height adjustment platform 2 and the main abutment 1. When the healing abutment is subjected to external forces in various directions, the engagement structure of the wedge surfaces can prevent the relative rotation and axial movement between the two components, so that the entire healing abutment structure becomes a more stable whole, effectively resisting the influence of external forces on the connection stability.

[0040] As shown in Figure 5As shown, this embodiment also includes a fine-tuning shim 4. Both the upper and lower connecting surfaces of the fine-tuning shim 4 are provided with anti-loosening wedge-shaped surfaces 3. The upper and lower anti-loosening wedge-shaped surfaces 3 of the fine-tuning shim 4 engage with the anti-loosening wedge-shaped surfaces 3 on the main base 1 and the height adjustment platform 2, respectively. The addition of the fine-tuning shim 4 further improves the accuracy of height adjustment. In practical applications, situations may arise where the combination of the height adjustment platform 2 and the main base 1 alone cannot meet the extremely precise height requirements, or when it is necessary to increase or decrease the height midway based on the observed soft tissue condition. The fine-tuning shim 4 can provide a smaller height adjustment increment, better adapting to the subtle individual differences within the oral cavity of different patients.

[0041] During the procedure, the patient's gingival tissue is cut open, and a suitable main abutment 1 is selected based on the patient's gingival condition. The connecting section 11 of the main abutment 1 is then installed into the implant. Next, a suitable height adjustment platform 2 is selected, and the need for adding a fine-tuning shim 4 for more precise adjustments is determined based on the patient's gingival thickness. If a fine-tuning shim 4 is required, it is threaded onto the threaded rod 21 of the height adjustment platform 2, and the threaded rod 21 is installed into the threaded hole 12 of the main abutment 1. The upper and lower anti-loosening wedge surfaces 3 of the fine-tuning shim 4 are then engaged with the anti-loosening wedge surfaces 3 on the main abutment 1 and the height adjustment platform 2, respectively. After installation, the gingival tissue is sutured, completing the second-stage dental implant surgery.

[0042] Example 2

[0043] The difference between this embodiment and Embodiment 1 is that, as Figure 6 As shown, the height adjustment platform 2 is also provided with a secondary threaded hole 23. In this embodiment, for ease of distinction, the base with the secondary threaded hole 23 is referred to as the intermediate base 5. The intermediate base 5 is used to connect with the threaded rod 21 of the height adjustment platform 2. Specifically, the connection end face between the intermediate base 5 and the height adjustment platform 2 can be connected by a plane or an anti-loosening wedge surface 3. Figure 6 The diagram shows a planar connection method. In this embodiment, by providing secondary threaded holes 12, the height of the intermediate base 5 can be further increased, thereby enabling further adjustment of the height of the healing base by adding or subtracting the number of height adjustment platforms 2.

[0044] Example 3

[0045] The difference between this embodiment and Embodiment 1 is that, as Figure 7 As shown, another connection method between the main base 1 and the height adjustment platform 2 is provided; specifically, it includes two sets of fine adjustment shims 4, which are engaged by anti-loosening wedge surfaces 3, and the other side of the two sets of fine adjustment shims 4 are respectively connected to the main base 1 and the height adjustment platform 2 by planar friction; that is, in this embodiment, the end faces of the main base 1 and the height adjustment platform 2 are not provided with anti-loosening wedge surfaces 3.

[0046] The above is only an embodiment of the present application, and the present application is not limited to this embodiment. The field involved in the embodiment, common knowledge of specific structures and properties in the scheme, and the like are not described in detail herein. It should be noted that, for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application. The protection scope of the present application should be subject to the content of the claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A universal adjustable height dental implant healing abutment, characterized in that, It includes a main abutment and a height adjustment platform. One end of the main abutment is provided with a connecting section for connecting to the implant, and the other end is provided with a threaded hole. One end of the height adjustment platform is provided with an outwardly extending threaded rod, which is threadedly connected to the threaded hole on the main abutment. The other end of the height adjustment platform has a square structure for cooperating with installation tools. Several anti-loosening wedge surfaces are provided on the end face of the main abutment and the end face of the height adjustment platform that contacts it. The two sets of anti-loosening wedge surfaces mesh with each other.

2. The universal adjustable height dental implant healing abutment according to claim 1, characterized in that: It also includes a fine-tuning shim, on which anti-loosening wedge-shaped surfaces are provided on both the upper and lower connecting surfaces. The upper and lower anti-loosening wedge-shaped surfaces of the fine-tuning shim engage with the anti-loosening wedge-shaped surfaces on the main base and the height adjustment platform, respectively.

3. The universal adjustable height dental implant healing abutment according to claim 2, characterized in that: The outer end face of the threaded hole of the main base is provided with an internal hex wrench hole.

4. The universal adjustable height dental implant healing abutment according to claim 3, characterized in that: The height adjustment platform is also provided with a secondary threaded hole for connecting to the threaded rod of another height adjustment platform.

5. The universal adjustable height dental implant healing abutment according to claim 4, characterized in that: The end of the main base near the connecting section has a conical surface.

6. The universal adjustable height dental implant healing abutment according to claim 2, characterized in that: It includes two sets of fine-tuning shims, which are engaged by anti-loosening wedge-shaped surfaces. The other side of the two sets of fine-tuning shims is connected to the main base and the height adjustment platform by planar friction, respectively.

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