Aesthetic function repairing device for sealing planting screw hole

Abstract

The utility model discloses an aesthetic function repairing device for sealing a planting screw hole, the repairing device comprises a main body and a hole sealing body, the outer surface of the main body is in a natural tooth form, a missing site can be reconstructed to improve the aesthetic effect, the main body is perfectly fused with other natural teeth, and the inner surface is matched with a non-screw hole part of a bottom crown to ensure stable installation. One end of the hole sealing body is connected with the inner surface of the main body, and the other end of the hole sealing body cylindrically extends into the bottom crown screw hole, so that the screw hole is effectively sealed, retention force is enhanced, falling risk is reduced, and repair durability is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of oral cavity restoration and implantation, and particularly relates to an aesthetic function restoration device for closing an implant screw hole. BACKGROUND

[0002] In the field of restoration of dentition defect and dentition loss, implant restoration is a commonly used and important solution. The specific operation process is to implant the implant into the alveolar bone at the tooth loss site to replace the missing natural tooth root, and then to realize stable connection with the abutment through the central screw (primary screw), and to connect the artificial tooth crown to the abutment through the restoration screw (secondary screw) or adhesive.

[0003] From the perspective of maintenance convenience, reserving a screw hole on the surface of the tooth crown is a common way in clinical practice. This is because when the screw hole is reserved on the surface of the tooth crown, once the restoration body needs to be replaced due to complications in the later stage, the abutment and the restoration body can be smoothly removed by opening the screw channel without damaging the overall structure of the tooth crown, and the operation is relatively simple. However, this method has a significant disadvantage, that is, the exposure of the screw hole will have an adverse effect on the aesthetic effect, especially in the anterior tooth area, the screw hole often penetrates from the labial side of the tooth crown, which seriously affects the appearance of the tooth.

[0004] In contrast, for the posterior tooth area, since its position in the oral cavity is relatively concealed, the aesthetic effect is usually not considered as the primary factor. Therefore, in clinical practice, composite resin is often used to close the screw hole in the posterior tooth area. However, composite resin itself has poor wear resistance and will age over time, which inevitably leads to a gradual decrease in its sealing effect, making it unable to effectively maintain the closed state of the screw hole for a long time.

[0005] In the existing patent technology, the published patent CN210697861U "Preformed inlay for closing upper restoration screw hole of implant tooth" has a "T" shaped cross section and a whole shape similar to a round cap. In actual application, when it is applied to the anterior tooth, due to the differences in material and shape between the crown and the inlay, as well as the incomplete adaptation of the shape of the inlay to the natural tooth, the problem of reduced aesthetic effect caused by the differences in material and shape is inevitable. In addition, the published patent CN216221750U "Sealing device for screw retention type implant restoration body" has a cylindrical structure and needs to be used in combination with composite resin to simply close the screw hole. However, the material of the sealing device is not the same as that of the tooth crown, and there is inevitably a weak boundary between them. The obvious boundary in structure and color makes it impossible to achieve good aesthetic and functional restoration of the screw hole, and it cannot meet the expectations of clinical restoration effect. UTILITY MODEL CONTENT

[0006] The purpose of this invention is to provide an aesthetic and functional restoration device for sealing implant screw holes. The screw hole can be sealed by the sealing body on the inner surface of the main body, while the shape and function of the missing natural tooth are restored on the outer surface of the main body. This solves the problems of poor aesthetic restoration effect of screw holes and obvious boundary between the sealing material and the crown after restoration in the prior art.

[0007] This utility model is achieved through the following technical solution:

[0008] An aesthetic functional restoration device for sealing implant screw holes, comprising:

[0009] The main body includes an outer surface and an inner surface, the outer surface being formed with a natural tooth shape for reconstructing the missing site, and the inner surface matching the non-screw hole shape portion of the bottom crown;

[0010] A sealing body, one end of which is connected to the inner surface, and the other end of which is columnar and extends into the screw hole of the bottom crown.

[0011] In this approach, the natural tooth shape formed by the outer surface of the main body precisely reconstructs the missing tooth site, allowing it to blend seamlessly with the patient's other natural teeth, significantly enhancing the aesthetic effect and meeting the patient's aesthetic needs. The matching design between the inner surface of the main body and the non-screw hole portion of the base crown ensures the stability and accuracy of the prosthesis during installation, firmly fixing it to the base crown and effectively preventing displacement or loosening during use. One end of the sealing body connects to the inner surface of the main body, while the other end extends in a columnar shape into the screw hole of the base crown. This structural design not only effectively seals the screw hole, preventing external substances from entering and affecting the stability and lifespan of the implant, but also enhances the retention force of the entire prosthesis, reducing the risk of detachment from the base crown and ensuring the durability of the restoration. Through the synergistic effect of the main body and the sealing body, this prosthesis provides a comprehensive and effective solution for implant screw hole restoration from both aesthetic and functional perspectives, improving the overall quality and reliability of implant restoration.

[0012] As a further technical solution for the aesthetic function restoration device, the contact surfaces of the main body and the bottom crown are connected by an adhesive.

[0013] In this design, the adhesive fills the tiny gaps between the main body and the base crown, ensuring a tight fit and forming a stable, integrated structure. Functionally, this connection method enhances the stability of the prosthesis, making it less prone to displacement or loosening under various complex external forces within the oral cavity, such as chewing forces, thus guaranteeing the durability of the restoration. From an aesthetic perspective, the tight adhesive connection avoids gaps or unevenness, resulting in a more natural and streamlined appearance that harmonizes with surrounding teeth and oral tissues, effectively improving the overall aesthetic effect. Moreover, the adhesive is relatively simple and flexible to use, easy to operate during the installation process, and eliminates the need for complex mechanical connections, reducing installation difficulty and cost, while also facilitating possible subsequent repairs or adjustments.

[0014] As a further technical solution for the aesthetic function restoration device, the sealing body is cylindrical or conical.

[0015] In this design, the cylindrical sealing body has a relatively simple structure. Its regular shape facilitates manufacturing and allows it to be stably inserted into the screw hole, effectively sealing it and preventing the entry of bacteria, food debris, and other foreign objects, thus protecting the health of the implant and surrounding tissues. The conical sealing body, on the other hand, has unique advantages. Its gradually tapering shape allows it to better adapt to the internal structure of the screw hole, forming a tighter fit with the hole wall, further enhancing the sealing effect and preventing accidental dislodgement. This provides more reliable retention for the restorative device. Both cylindrical and conical designs contribute to improving the overall stability and functionality of the restorative device. Aesthetically, they blend naturally with the main body and surrounding tooth structure, without affecting the overall aesthetics of the restoration. This results in a superior appearance and function for the restored teeth, meeting patients' high demands for implant restoration.

[0016] As a further technical solution for the aesthetic function restoration device, when the sealing body is cylindrical, the connecting end of the sealing body to the inner surface is flush with and has the same shape as the screw hole opening, and a filling cavity for filling protective material is reserved between the free end of the sealing body and the screw hole.

[0017] In this design, the flush and consistent shape of the inner connecting end with the screw hole opening ensures a tight fit between the sealing body and the screw hole, achieving a seamless connection in appearance. This greatly enhances the overall aesthetic effect of the restorative device, making the restored teeth look more natural and beautiful. Functionally, it effectively prevents external substances from entering through the gap between the connecting end and the screw hole, enhancing the sealing performance of the screw hole and protecting the implant and surrounding tissues from potential hazards such as bacteria and food debris. Simultaneously, the pre-reserved cavity between the free end of the sealing body and the screw hole provides space for the filling material. This material further enhances the protection of the screw hole's interior, preventing damage to the central screw, extending the lifespan of the implant and restorative device, and also acts as a buffer. When the restorative device is subjected to external forces such as chewing forces, the protective material can disperse stress, reducing the impact on the sealing body and screw hole structure, thereby maintaining the stability and reliability of the restorative device and ensuring the long-term effectiveness of the implant restoration.

[0018] As a further technical solution for the aesthetic function restoration device, when the sealing body is a conical cylinder, the end of the sealing body that connects to the inner surface is provided with a chamfer with an inward pull-out angle of θ. The outer contour line formed by the chamfer surface and the inner surface at the connection point is flush with and consistent with the opening of the screw hole. A filling cavity for filling protective material is reserved between the free end of the sealing body and the screw hole.

[0019] In this design, the end of the sealing body that connects to the inner surface features an inward pull-out angle of θ. This ensures that the outer contour formed by the chamfered surface and the inner surface at the connection point is flush with and consistent with the screw hole opening, achieving a natural transition between the sealing body and the screw hole. This results in a more refined and aesthetically pleasing appearance of the restored tooth, seamlessly integrating it with surrounding teeth and oral tissues, thus enhancing the overall aesthetic effect. Simultaneously, this structure improves the compatibility between the sealing body and the screw hole, effectively preventing external impurities from entering the screw hole, further improving sealing performance, and protecting the implant and surrounding tissues. The cavity filled with protective material between the free end of the sealing body and the screw hole, after being filled with the protective material, further strengthens the protection of the screw hole's interior, preventing damage to the central screw and extending the lifespan of the implant restoration.

[0020] As a further technical solution for the aesthetic function restoration device, the pull-out angle θ is 30° to 60°.

[0021] In this design, when the angle θ approaches 30°, the bottom of the sealing body is relatively wide, allowing for more stable positioning during screw insertion. The larger contact area with the screw hole wall enhances initial sealing and retention, effectively preventing accidental dislodgement. It also provides ample space for the filling material, protecting the central screw from external interference. When the angle approaches 60°, the upper part of the sealing body is relatively narrower, facilitating insertion into the screw hole. After insertion, its unique tapered shape creates a wedge-like effect, further improving stability in complex oral environments (such as the forces generated by chewing and swallowing). Aesthetically, the appropriate angle allows for a natural transition between the sealing body, the main body, and the screw hole opening, enhancing the overall harmony and aesthetics of the restoration. This angle range comprehensively considers factors such as the sealing performance, retention effect, filling space requirements, and aesthetic requirements of the sealing body, ensuring that the tapered sealing body functions efficiently and persistently in implant screw hole restorations, providing patients with a reliable and aesthetically pleasing restorative experience.

[0022] As a further technical solution for the aesthetic function restoration device, a filling cavity with a depth of at least 2mm is reserved between the free end of the sealing body and the screw hole.

[0023] In this design, the filling cavity with a depth of at least 2mm provides ample space for the protective material. This material effectively isolates the central screw from the external environment, preventing bacteria, food residue, and other impurities from corroding it and causing rust or damage. This significantly extends the lifespan of the central screw and the entire implant system. Secondly, when the implant is subjected to external forces such as chewing forces, the protective material filling the cavity acts as a buffer, evenly distributing stress and preventing stress concentration at the contact points between the sealing body and the screw holes. This reduces the risk of deformation, wear, or even cracking of the sealing body and screw holes due to long-term stress, effectively ensuring the integrity and stability of the implant structure.

[0024] As a further technical solution for the aesthetic function restoration device, the filling protective material is polytetrafluoroethylene.

[0025] In this solution, polytetrafluoroethylene (PTFE) exhibits excellent chemical stability, resisting the corrosive effects of various chemicals in the oral cavity, including acidic food debris and oral secretions. In the complex oral environment, this stability ensures that the filling material does not deteriorate due to chemical corrosion, thus maintaining effective protection for the central screw at all times.

[0026] As a further technical solution for the aesthetic function restoration device, the main body and the sealing body are made of any one of the following materials: zirconium oxide, alumina, composite ceramics, lithium disilicate glass ceramics, leucite glass ceramics, feldspar glass ceramics, polyetheretherketone, and polyetherketoneketone.

[0027] In this solution, the aforementioned materials exhibit excellent performance in all aspects, facilitating the fabrication of restorative devices that conform to the patient's oral anatomy and individual needs, thereby improving fabrication precision and efficiency.

[0028] As a further technical solution for the aesthetic functional restoration device, in order to optimize the manufacturing process, improve production efficiency, reduce costs, and promote the widespread application of the aesthetic functional restoration device in the field of oral restoration, the main body and the sealing body are manufactured by three-dimensional printing, CNC cutting, or embedding casting.

[0029] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0030] 1. The main sealing body of this utility model can seal the screw hole, and at the same time, the outside of its main body restores the shape and function of the missing natural tooth, avoiding the adverse effect on the aesthetic effect of the obvious boundary between the sealing material and the crown in the traditional solution.

[0031] 2. This utility model eliminates the need for external screw holes, avoiding the adverse effects of screw holes on the overall mechanical properties of the crown. This results in a more complete crown structure, more stable mechanical properties, and better ability to withstand external forces such as chewing forces, reducing the risk of damage caused by structural weaknesses. In contrast, in the prior art, screw holes on the surface of the crown can affect its mechanical properties, and the crown completely covering the screw holes makes it inconvenient to handle complications.

[0032] 3. The sealing body of this utility model extends into the screw hole, which enhances the retaining force and reduces the risk of falling off. At the same time, the sealing body can be cylindrical or conical, which can fit tightly with the screw hole and effectively prevent external substances from entering the screw hole.

[0033] 4. This utility model can be bonded to the bottom crown, avoiding the detachment of the sealing material. If complications such as breakage or cracking occur during use, it can be directly removed and replaced without removing the abutment together. The operation is convenient and quick, improving the convenience and flexibility of the restoration. Compared with the complicated operation of the prior art where the crown completely covers the screw hole and complications require the complete removal of the crown along with the abutment, this utility model provides a simpler and more effective solution for patients and doctors. Attached Figure Description

[0034] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0035] Figure 1 This is a schematic diagram of the structure of the main body of this utility model when applied to the anterior teeth;

[0036] Figure 2 This is a schematic diagram showing that the screw hole of this utility model is located on the bottom crown lip side;

[0037] Figure 3 This is a schematic diagram of the sealing body of this utility model;

[0038] Figure 4 This is a schematic diagram of the structure of this utility model when applied to the anterior teeth;

[0039] Figure 5 A schematic diagram illustrating the use of the device of this invention to repair the labial screw hole of anterior teeth;

[0040] Figure 6 This is a schematic diagram showing the base and the bottom crown with screw holes after being bonded together.

[0041] Figure 7 This is a schematic diagram of the structure of this utility model when applied to posterior teeth;

[0042] Figure 8 This is a schematic diagram illustrating the use of this invention to repair screw holes on the occlusal surface of posterior teeth.

[0043] The attached diagram shows the markings and corresponding component names:

[0044] 1-Main body, 2-Bottom crown, 3-Screw hole, 4-Sealing body. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0046] Example 1

[0047] This embodiment 1 provides an aesthetic functional restoration device for sealing implant screw holes, such as... Figures 1-4 As shown, it includes a main body 1 and a sealing body 4. The main body 1 provides the external shape of the repair device and the connection base with the bottom crown 2, while the sealing body 4 is mainly responsible for sealing the screw holes 3. The two work together to enable the repair device to meet both aesthetic requirements and good functional characteristics.

[0048] Among them, such as Figure 1As shown, the main body 1 includes an outer surface and an inner surface. The outer surface is formed with a natural tooth shape for reconstructing the missing site. This shape can coordinate with the appearance of other natural teeth in the patient's oral cavity, making the restored tooth look natural and beautiful. In terms of occlusal function, it can also cooperate normally with the opposing teeth to ensure the patient's chewing efficiency. The inner surface matches the non-screw hole shape of the bottom crown 2, which can ensure that the restoration device has good stability after installation, is not easy to shift or loosen, and ensure the durability of the restoration effect. Furthermore, the shape and size of the inner surface are adapted to the bottom crown 2. Through precise design and processing, the two can be seamlessly connected, which enhances the overall structural strength of the restoration device and also helps to distribute chewing forces and protect the implant and surrounding tissues.

[0049] Please refer to Figure 2 and Figures 4-5 As shown, one end of the sealing body 4 is connected to the inner surface, and the other end of the sealing body 4 is columnar and extends into the screw hole 3 of the bottom crown 2;

[0050] The sealing body 4 can be cylindrical or conical. The cylindrical sealing body has a simple structure and is relatively easy to manufacture. It can effectively seal the screw hole and prevent external substances from entering the screw hole. At the same time, it has a certain stability in its fit with the screw hole. The conical sealing body has better adaptability. Its gradually tapering shape can better fit the internal structure of the screw hole. While providing a good sealing effect, it can also enhance the retention force and reduce the risk of the sealing body falling out of the screw hole. It is especially suitable for situations where the retention requirement is high.

[0051] In some embodiments, when the sealing body 4 is cylindrical, the connecting end of the sealing body 4 to the inner surface is flush with and has the same shape as the opening of the screw hole 3. The consistent shape design ensures a tight fit between the sealing body 4 and the screw hole 3, achieving a seamless connection in appearance. At the same time, a filling cavity for filling protective material is reserved between the free end of the sealing body 4 and the screw hole 3. Typically, 2mm high polytetrafluoroethylene protective material is filled into the screw hole 3 and compacted. When the repair device is subjected to external forces such as chewing force, the protective material can disperse stress and reduce the impact on the structure of the sealing body 4 and the screw hole 3.

[0052] In some embodiments, when the sealing body 4 is conical, the end of the sealing body 4 that connects to the inner surface is provided with a chamfer with an inward pull-out angle of θ. The angle θ can be 30 degrees to 60 degrees, and the specific value can be determined according to the actual situation. At the same time, the outer contour line formed by the chamfer surface and the inner surface at the connection point is flush with and consistent with the opening of the screw hole 3. A filling cavity for filling protective material is reserved between the free end of the sealing body 4 and the screw hole 3. Usually, 2 mm high polytetrafluoroethylene protective material is filled into the screw hole 3 and compacted. After the filling cavity is filled with protective material, it can enhance the protection of the inside of the screw hole.

[0053] In some embodiments, the main body 1 and the sealing body 4 are made of the same material, which may be any one of zirconium oxide, alumina, composite ceramics, lithium disilicate glass ceramics, leucite glass ceramics, feldspar glass ceramics, polyetheretherketone and polyetherketoneketone.

[0054] The manufacturing process of the aesthetic function restoration device in this embodiment is as follows:

[0055] Step 1. Use a 3D dental imaging device (such as a dental CBCT) to scan the implants in the patient's mouth, obtaining precise 3D position information of the implants, including their depth and angle in the alveolar bone, and their spatial relationship with surrounding tissues. Import this data into professional dental restoration construction software (such as 3Shape, Exocad, etc.). In the software environment, begin constructing the superabutment according to the implant specifications and the patient's oral anatomy. The design must consider factors such as the height of the abutment and the shape of the connection parts to ensure a stable connection between the abutment and the implant and to provide a suitable foundation for the subsequent restoration. After completion, save the abutment data as Data 1.

[0056] Step 2. In Geomagic Studio, open Data 1, and use the "Spline Boundary" function to select the screw hole 3 structure inside the base data body. Create boundary lines at its upper and lower ends. These two boundary lines clearly define the range of screw hole 3. Then, use the software's extraction function to extract the data of screw hole 3 separately and save it as Data 2.

[0057] Step 3. Select Data 2, use the stretch function of the construction software, set the stretch direction to upward and away from the base, and set the stretch height according to actual needs to meet the requirements of subsequent construction of the sealing body and other structures. After stretching, convert the stretched structure into solid data. This solid data will be used as one of the basic structures for constructing the sealing body 4, and saved as Data 3.

[0058] Step 4. Return to the base data represented by Data 1, delete the data between the upper and lower boundaries of the base data (i.e., the area where the original screw hole 3 was located), and only keep the base part above the upper boundary. Then, based on this upper boundary, use the closing function of the construction software to close the opening of the remaining part of the base, forming a complete base shape data with the screw hole area removed, and save it as Data 4;

[0059] Step 5. Open Data 4 and begin constructing the base crown 2 based on it. Consider the patient's dentition, adjacent tooth morphology, and occlusal relationship, design the outline, thickness, and connection point with the abutment of the base crown 2. During construction, ensure that the base crown 2 fits tightly with the abutment, and that its position and shape within the oral cavity meet aesthetic and functional requirements. After completion, save the base crown data as Data 5.

[0060] Step 6. Construct the main body 1 of the aesthetic functional restoration device based on data 5. Depending on the location and type of the patient's missing teeth (e.g., front or back teeth), such as... Figure 1 As shown, the natural tooth shape of the outer surface of the main body 1 is designed, taking into account individual differences such as tooth wear due to age and the manifestation of gender differences in tooth shape, and personalized design. At the same time, the inner surface of the main body 1 is constructed to ensure that it can be precisely matched with the non-screw hole part of the bottom crown 2 to ensure stability after installation. After the construction is completed, the data of the main body 1 is saved as data 6;

[0061] Step 7. Perform Boolean operations in Geomagic Studio. Using data 5 (bottom crown data) as the object being operated on and data 3 (the screw hole-related entity data after extrusion conversion) as the object to be subtracted, execute the "Boolean Subtraction" command, as follows: Figure 2 As shown, this gives us data for the bottom crown 2 with the accurate position of the screw hole 3. This data will play a key role in the subsequent construction of the sealing body 4 and the bottom crown 2. This data is saved as data 7.

[0062] Step 8. In Geomagic Studio, open Data 7 and use the "Spline Boundary" function to create boundary lines again at the top and bottom ends of the screw hole 3. Then select the area between these two boundary lines and extract the screw hole 3 data in this area. Perform a "Boolean merge" operation on the extracted screw hole 3 data and the previously saved screw hole 3 data 2. The purpose is to integrate and optimize the screw hole data to ensure the accuracy and integrity of the screw hole data. Save the merged data as Data 8.

[0063] Step 9. In Geomagic Studio, use the "Planar Cut" function to cut off the portion near the implant end. Leave 2mm of space for the protective material (such as PTFE) to fill the screw hole 3. Then, offset the cut data in the direction of diameter reduction. The offset distance is determined based on factors such as the designed adhesive thickness; in this embodiment, the offset value is 0.04mm. Save the resulting data as data 9. The gap between data 9 and the screw hole 3 is the adhesive space, which is 0.04mm.

[0064] Step 10. In Geomagic Studio, use the "Plane Fill" function to close data 9, sealing its two ends, thus obtaining the data model of the sealing body 4. Finally, perform a "Boolean merge" operation on the sealing body 4 data and data 6 (main body data) to integrate the sealing body 4 and the main body 1 into a complete aesthetic and functional repair device data model. This model can be used for subsequent processing and manufacturing, such as using 3D printing, CNC cutting, or embedding casting to create a physical product of the repair device.

[0065] Example 2

[0066] Since the anterior region of the oral cavity, including the central incisors, lateral incisors, and canines, primarily functions for food cutting and aesthetics, any restorative device applied to the anterior region must prioritize aesthetic factors to achieve a natural and aesthetically pleasing restoration that harmonizes with the surrounding teeth and gums. Under this premise, this embodiment, based on the technical solution of Embodiment 1, provides an aesthetic functional restoration device for sealing implant screw holes. This device can be highly personalized according to the shape, size, and color of the central and lateral incisors, as well as individual age and tooth wear. When the screw hole 3 protrudes through the artificial gingiva, the outer surface of the main body 1 can simulate the gingival morphology, allowing the restored tooth to transition naturally with the surrounding gingival tissue, appearing almost identical to a natural anterior tooth, greatly enhancing the patient's aesthetics and self-confidence. During installation, the bottom crown 2 is first bonded to the abutment externally, such as... Figure 2 As shown, position screw hole 3 on the labial side of the bottom crown 2, then remove the healing abutment installed during surgery to expose the implant connection interface. Place the abutment and bottom crown 2 together on the intraoral implant and tighten the central screw with a torque of 35 Ncm. Fill screw hole 3 with 2 mm high polytetrafluoroethylene protective material and compact it. Try on the implant as shown. Figure 4 The aesthetic functional restoration device shown allows the sealing body 4 to be positioned within the labial screw hole 3. Simultaneously, the main body 1 mates with the base crown 2, and the main body 1 and base crown 2 fit tightly together. Using adhesive, the entire aesthetic functional restoration device is bonded to the base crown 2, completing the aesthetic restoration of the labial screw hole of the anterior tooth. Figure 5 As shown, it effectively solves the aesthetic problems caused by the presence of screw holes in the anterior teeth area, while its stable structure can also ensure normal occlusal function.

[0067] Example 3

[0068] Since the posterior teeth region includes molars or premolars and primarily bears the function of chewing, to ensure a good occlusion, during installation, the base crown 2 is first bonded to the abutment, as shown below. Figure 6As shown, screw hole 3 is located on the occlusal surface of the bottom crown 2. Remove the healing abutment installed during surgery to expose the implant connection interface. Place the abutment and bottom crown 2 together on the intraoral implant and tighten the central screw with a torque of 35 Ncm. Fill screw hole 3 with 2 mm high polytetrafluoroethylene protective material and compact it. Try on the implant as shown. Figure 7 The aesthetic functional restoration device shown allows the sealing body 4 to be positioned within the screw hole 3 on the occlusal surface. Simultaneously, the main body 1 mates with the base crown 2, and the main body 1 and base crown 2 fit tightly together. Using adhesive, this aesthetic functional restoration device is bonded to the base crown 2, completing the functional restoration of the screw hole on the occlusal surface of the posterior teeth. Figure 8 As shown, this enhances the stability and durability of posterior tooth restoration devices, enabling them to withstand greater chewing forces. While ensuring the function of posterior teeth, it also maintains the overall aesthetics of the posterior tooth area, achieving a balance between aesthetics and function in posterior tooth restoration and providing patients with a comprehensive posterior tooth implant restoration solution.

[0069] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An aesthetic functional restoration device for sealing implant screw holes, characterized in that, include: The main body (1) includes an outer surface and an inner surface, the outer surface being formed with a natural tooth shape for reconstructing the missing site, and the inner surface matching the non-screw hole shape portion of the bottom crown (2); A sealing body (4) is provided, one end of which is connected to the inner surface, and the other end of which is columnar and extends into the screw hole (3) of the bottom crown (2).

2. The aesthetic functional restoration device for sealing implant screw holes according to claim 1, characterized in that, The contact surfaces of the main body (1) and the bottom crown (2) are connected by an adhesive.

3. The aesthetic functional restoration device for sealing implant screw holes according to claim 1, characterized in that, The sealing body (4) is cylindrical or conical.

4. The aesthetic functional restoration device for sealing implant screw holes according to claim 3, characterized in that, When the sealing body (4) is cylindrical, the connection end of the sealing body (4) to the inner surface is flush with the opening of the screw hole (3) and has the same shape. A filling cavity for filling protective material is reserved between the free end of the sealing body (4) and the screw hole (3).

5. The aesthetic functional restoration device for sealing implant screw holes according to claim 3, characterized in that, When the sealing body (4) is a conical cylinder, the end of the sealing body (4) connected to the inner surface is provided with a chamfer with an inward pull-out angle of θ. The outer contour line formed by the chamfer surface and the inner surface at the connection point is flush with and consistent with the opening of the screw hole (3). A filling cavity for filling protective material is reserved between the free end of the sealing body (4) and the screw hole (3).

6. The aesthetic functional restoration device for sealing implant screw holes according to claim 5, characterized in that, The pull-out angle θ is 30° to 60°.

7. An aesthetic functional restoration device for sealing implant screw holes according to any one of claims 4-6, characterized in that, A filling cavity with a depth of at least 2 mm is reserved between the free end of the sealing body (4) and the screw hole (3).

8. The aesthetic functional restoration device for sealing implant screw holes according to claim 7, characterized in that, The filling protective material is polytetrafluoroethylene.

9. The aesthetic functional restoration device for sealing implant screw holes according to claim 7, characterized in that, The main body (1) and the sealing body (4) are made of any one of the following materials: zirconium oxide, alumina, composite ceramics, lithium disilicate glass ceramics, leucite glass ceramics, feldspar glass ceramics, polyetheretherketone and polyetherketoneketone.

10. The aesthetic functional restoration device for sealing implant screw holes according to claim 7, characterized in that, The main body (1) and the sealing body (4) are manufactured by three-dimensional printing, CNC cutting or embedding casting.

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