Split implant healing abutment

Abstract

The application provides a split implant healing abutment, and relates to the field of dental implants, which comprises a base, the bottom of which is provided as an inverted cone section, the top of which is provided as a cylindrical section, and the inside of which is provided with a central passage that penetrates the top and the bottom, the central passage being provided in a tapering manner from the top to the bottom of the base; a central screw, which comprises a threaded portion and a screw end, the threaded portion being threadedly connected to the implant through the central passage, and the screw end abutting against the inner wall of the base to fixedly connect the base to the implant; and an adjusting cap, which is detachably connected to the cylindrical section of the base, and which, by cooperating with the base through adjusting caps of different sizes and materials, forms healing abutments of different diameters, different heights and applied to different dental implant sites. The application has the effect of improving the clinical reliability and adaptability of the healing abutment.

Description

Technical Field

[0001] This application relates to the field of dental implant technology, and more particularly to a split implant healing abutment. Background Technology

[0002] The healing abutment is a crucial temporary component in dental implant surgery. Its core function is to maintain the stability and shaping of the soft tissue in the implant-perigingival area after implant placement and before permanent restoration, guiding the gums to form a healthy and aesthetically pleasing profile. It is widely used in the second stage of dental implant surgery to lay the soft tissue foundation for subsequent crown restoration.

[0003] Currently, the healing abutments widely used in clinical practice mainly adopt a one-piece molded structure, meaning that the abutment base used to connect to the implant and the cuff portion that passes through the gum line are an inseparable whole. During use, the dentist needs to select a one-piece healing abutment from a variety of pre-prepared models based on the patient's gum thickness, edentulous space width, and soft tissue morphology, according to preoperative measurements or intraoperative assessments, and then fasten it to the implant with screws.

[0004] However, this traditional one-piece design has significant drawbacks. First, its applicability is poor: due to the wide individual differences in patients' gingival conditions, even in the same patient's mouth, the thickness and shape of the gingiva at different tooth positions often vary. Clinicians must maintain a large inventory of healing abutment models of different sizes (such as various diameters and heights) for selection. This not only greatly increases the hospital's procurement costs, inventory management pressure, and sterilization burden, but also may not be able to find a completely suitable model when encountering gingival cuffs with special shapes, leading to compromises and affecting soft tissue healing and aesthetic results. Second, this approach lacks intraoperative flexibility. If it is found during surgery that the originally selected model is not suitable, the abutment needs to be replaced, which not only prolongs the operation time but also increases the risk of soft tissue trauma from repeated manipulations. Utility Model Content

[0005] To address the issue of poor flexibility in the application of healing abutments, this application provides a modular implant healing abutment.

[0006] The technical solution for a split implant healing abutment provided in this application is as follows: A modular implant healing abutment, comprising: The base has an inverted conical section at the bottom and a cylindrical section at the top. A central channel is provided inside the base, which is tapered from the top to the bottom. The central screw includes a threaded portion and a screw end. The threaded portion engages with the implant threadedly through a central channel, and the screw end abuts against the inner wall of the abutment base to fix the abutment base to the implant. The adjusting cap is detachably connected to the cylindrical section of the abutment base. By adjusting the size and material of the adjusting cap, healing abutments with different diameters, different heights, and applications in different dental implant sites can be formed in conjunction with the abutment base.

[0007] Furthermore, the adjusting cap is a cylindrical shape made of resin and is interference-fitted with the cylindrical section. It is fixed to the cylindrical section by constraint force and friction force.

[0008] Furthermore, the top of the adjusting cap is provided with a groove, which is either strip-shaped or cross-shaped.

[0009] Furthermore, the adjusting cap is cast in a shape that fits the extraction cuff.

[0010] Furthermore, the base has an annular shoulder with an outer diameter larger than that of the cylindrical section on its side wall, and the annular shoulder is located between the cylindrical section and the inverted conical section of the base.

[0011] Furthermore, multiple side holes are provided on the peripheral wall of the cylindrical section.

[0012] Furthermore, the adjusting cap is cast in a shape resembling anterior teeth.

[0013] Furthermore, the top of the adjustment cap is provided with a silicone rubber layer for recording the engagement relationship.

[0014] Furthermore, the taper of the inverted conical section of the base plate is in the range of 6-8°.

[0015] Furthermore, the adjusting cap is made of polyetheretherketone or a composite resin.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. This application adopts a split structure design for the healing abutment, with the adjustment cap and abutment base being detachably connected. This avoids the problem of needing to keep a large number of models in stock for traditional one-piece healing abutments, allowing doctors to flexibly select and combine according to the patient's gingival thickness and soft tissue morphology, significantly improving clinical adaptability and reducing the complexity and blindness of hospital inventory and clinical selection. 2. The adjusting cap of this application is made of elastic resin material, which securely wraps around the cylindrical section through its own elasticity. This ensures a reliable seal and makes replacement or disassembly easy, avoiding secondary soft tissue damage caused by repeated replacement of the entire healing abutment, thus improving the safety and efficiency of the surgery. In addition, the adjusting cap can also be cast in place, allowing its outer wall to precisely conform to the shape of the patient's extraction wound, thereby better filling and sealing the defect area, reducing food debris accumulation, promoting clean wound healing, and improving postoperative aesthetics. Furthermore, the adjusting cap can also be cast into the shape of a natural tooth. When a patient is missing an anterior tooth, affecting aesthetics and requiring immediate restoration, resin can be deposited on the abutment base to form a tooth and restore the defect.

[0017] 3. This application has an annular shoulder, side holes and detachable sealing components on the abutment base, which can play a role in guiding, positioning and limiting the shape during the in-situ casting process of the adjusting cap, so that the sealing material is evenly distributed and firmly formed, improving the fit and forming quality of the adjusting cap and the gingival cuff, thereby further ensuring the healing effect and the accuracy of the restoration installation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0020] Figure 2 This is an exploded structural diagram of Embodiment 1 of this application.

[0021] Figure 3 This is a top view of the application scenario of Embodiment 1 of this application.

[0022] Figure 4 This is a cross-sectional view of the application scenario of Embodiment 1 of this application.

[0023] Figure 5 This is a top view of the application scenario of Embodiment 2 of this application.

[0024] Figure 6 This is a cross-sectional view of the application scenario of Embodiment 2 of this application.

[0025] Figure 7 This is a cross-sectional view of the application scenario of Embodiment 3 of this application.

[0026] Figure reference numerals: 1. Implant; 2. Abutment base; 21. Inverted conical section; 22. Cylindrical section; 221. Side hole; 23. Annular shoulder; 3. Central screw; 31. Threaded part; 32. Screw end; 4. Adjusting cap; 41. Groove; 5. Silicone rubber layer; 6. Sealing element; 7. Gingival cuff; 8. Natural tooth; 9. Gingival layer; 10. Alveolar bone. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0028] Example 1 like Figure 1 , Figure 2 As shown, the split implant healing abutment provided in this embodiment includes an abutment base 2, a central screw 3, and an adjustment cap 4.

[0029] The base 2 has an inverted conical section 21 at its bottom, which is an inverted frustum shape. Preferably, the inclination angle of its side is in the range of 6-8°, that is, the angle between the inclined surface of the inverted conical section 21 and its axis is 6-8°. It is used to insert and stabilize the implant in the planting hole above the implant 1. The top has a cylindrical section 22, which serves as the installation section and connects to the adjusting cap 4. The base has a central channel inside, which gradually narrows from the top to the bottom. The threaded part 31 of the central screw 3 engages with the internal thread of the implant 1 through this channel, and the screw end 32 abuts against the inner wall of the base, so that the base 2 and the implant 1 are firmly fixed.

[0030] An annular shoulder 23 is provided between the cylindrical section 22 and the inverted conical section 21. Its function is to limit and support the adjusting cap 4, so that the adjusting cap does not slip or shift during wearing, thus ensuring a sealing effect.

[0031] The adjusting cap 4 is prefabricated from an elastic resin material. The resin possesses excellent flexibility and resilience, allowing it to firmly encase the cylindrical section 22, ensuring a stable seal. The resin material also exhibits excellent biocompatibility, is non-irritating to oral soft tissues, and promotes wound healing. Depending on the requirements, the adjusting cap 4 can be made of polyetheretherketone (PEEK) or oral composite resin material.

[0032] To facilitate intraoperative and postoperative procedures, such as Figure 2 As shown, the top of the adjustment cap 4 can be provided with a groove 41, which allows the doctor to easily put on and take off the cap with the aid of instruments.

[0033] Because some patients have teeth at the front of the edentulous area but lost their posterior teeth early, meaning at least one side of the implant is in a free state, it is difficult to determine the occlusal height of the prosthesis during implantation. A common measurement method is to directly bite on wax to record the distance between the gingiva at the edentulous area and the opposite tooth; however, due to the softness of the gingiva, this leads to significant measurement errors. In this embodiment, the top of the adjusting cap 4 can also be injected with an occlusal recording silicone rubber layer 5 for quickly and accurately recording the patient's occlusal relationship. Specifically, after the adjusting cap 4 is installed, a silicone rubber layer 5 is injected onto the top surface of the adjusting cap 4. Before the silicone rubber layer 5 hardens, the patient bites on the cap, allowing the silicone rubber layer 5 to record the occlusal relationship. This facilitates the determination of the crown height and the vertical distance to the opposing tooth during the later 3D scanning and crown fabrication process, improving the fit between the implant and the opposing tooth.

[0034] like Figure 3 and Figure 4 As shown, this embodiment is suitable for conventional gingival cuffs (nearly circular gingival cuffs). In actual use, the dentist fixes the abutment base 2 to the implant 1 using the central screw 3, and then selects a suitable prefabricated resin adjustment cap 4 to fit onto the cylindrical section 22, maintaining stability under the limiting effect of the annular shoulder 23. The resin cap 4 not only ensures a seal but also avoids the pressure that a metal cap might cause to the gums, promoting natural soft tissue healing. Furthermore, it is highly malleable and flexible, and compared to the titanium alloy material of ordinary healing abutments, the detachable resin cap significantly reduces material preparation costs.

[0035] Example 2 For patients with complex gingival defects that cannot be fully fitted by standard sizes, such as Figure 5 As shown, this utility model provides a solution for on-site resin casting adjustment caps.

[0036] like Figure 6 As shown, the cylindrical section 22 of the base 2 has several side holes 221 around its perimeter, which are used in conjunction with the annular shoulder 23.

[0037] During the procedure, the surgeon fixes the abutment base 2 to the implant 1 and installs the sealing element 6 inside the abutment base before pouring. The function of the sealing element 6 is to isolate the side hole 221 from the internal space of the abutment base 2, preventing resin from flowing into the central channel during pouring and thus clogging the central screw 3, which would affect subsequent disassembly.

[0038] Subsequently, the dentist injects light-cured or flowable resin into the gap between the cylindrical section 22 and the gingival cuff. The annular shoulder 23 provides limiting support, allowing the resin to gather and shape at a predetermined height; the side holes 221 allow partial resin infiltration and curing, forming a "mechanical lock," which significantly enhances the connection stability between the adjustment cap 4 and the base 2.

[0039] like Figure 5-6 As shown, after the resin is injected, it is quickly cured using a light-curing lamp, ultimately forming a personalized adjustment cap 4 directly inside the patient's mouth. The cured resin adjustment cap can precisely fit the shape of the extraction notch, providing excellent sealing. It can prevent food debris accumulation and guide the gingival tissue to heal along the ideal contour, thus balancing functionality and aesthetics.

[0040] Furthermore, similar to Example 1, when at least one side of the dental implant is in a free state and it is necessary to determine the occlusal relationship, this example injects a silicone rubber layer 5 on the top of the adjustment cap 4 to quickly and accurately record the patient's occlusal relationship.

[0041] The advantage of this embodiment is that, thanks to the plasticity of the resin material and the locking effect of the side holes 221, on-site casting can provide highly individualized repair solutions for complex cases. The sealing component 6 can be made of Teflon to seal the interior of the cylindrical section 22 of the abutment base 2, ensuring that the central screw 3 is not blocked by resin during the casting process, thus guaranteeing clinical maintainability and ease of subsequent disassembly.

[0042] Example 3 The difference between this embodiment and embodiment two is that the adjusting cap in this embodiment is cast in a shape that mimics the front teeth.

[0043] like Figure 7 As shown, when a patient is missing an anterior tooth, affecting their appearance and requiring immediate restoration, an implant 1 is inserted, and an abutment base 2 is installed on the implant 1. Resin is then applied to the abutment base 2, and manually stacked by the dentist to form a shape that mimics an anterior tooth. This resin is then quickly cured using a light-curing lamp to restore the anterior tooth and resolve the temporary aesthetic issue. After the temporary tooth has been in use for about three to six months, the final finished denture is completed. The temporary tooth is then removed, and the finished denture is installed, thus resolving the temporary aesthetic problem.

[0044] As can be seen from Embodiments 1, 2, and 3, the resin adjusting cap 4 of this invention not only achieves the simplicity and flexibility of prefabrication and installation, but also meets the needs of personalized adaptation through on-site casting. Especially in Embodiment 2, the cooperation between the side hole 221 and the sealing component 6 makes the resin molding both stable and safe, avoiding operational risks and thus improving the clinical reliability and adaptability of the healing abutment. In Embodiment 3, in the case of missing anterior teeth, the adjusting cap 4 can be cast into a shape mimicking anterior teeth to serve as a temporary tooth, immediately filling the edentulous space and solving the temporary aesthetic problem.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A split-type implant healing abutment, characterized in that, include: The base has an inverted conical section at the bottom and a cylindrical section at the top. A central channel is provided inside the base, which is tapered from the top to the bottom. The central screw includes a threaded portion and a screw end. The threaded portion engages with the implant threadedly through a central channel, and the screw end abuts against the inner wall of the abutment base to fix the abutment base to the implant. The adjusting cap is detachably connected to the cylindrical section of the abutment base. By using adjusting caps of different sizes and materials to cooperate with the abutment base, healing abutments of different diameters, different heights and applications for different dental implant sites can be formed.

2. The split-type implant healing abutment according to claim 1, characterized in that, The adjusting cap is a cylindrical shape made of resin and is interference-fitted with the cylindrical section. It is fixed to the cylindrical section by constraint force and friction force.

3. The split-type implant healing abutment according to claim 2, characterized in that, The top of the adjusting cap has a groove, which is either strip-shaped or cross-shaped.

4. The split-type implant healing abutment according to claim 1, characterized in that, The adjusting cap is cast in a shape that fits the extraction cuff.

5. A split-type implant healing abutment according to claim 4, characterized in that, The base has an annular shoulder with an outer diameter larger than that of the cylindrical section on its side wall. The annular shoulder is located between the cylindrical section and the inverted conical section of the base.

6. A split-type implant healing abutment according to claim 5, characterized in that, Multiple side holes are provided on the peripheral wall of the cylindrical section.

7. A split-type implant healing abutment according to claim 6, characterized in that, The adjusting cap is cast in a shape that mimics natural teeth.

8. A split-type implant healing abutment according to claim 1, characterized in that, The top of the adjusting cap is provided with a silicone rubber layer for recording the bite relationship.

9. A split-type implant healing abutment according to claim 1, characterized in that, The taper of the inverted conical section of the base plate is 6-8°.

10. A split-type implant healing abutment according to claim 2, characterized in that, The adjusting cap is made of polyetheretherketone or composite resin material.

Images