Partial removable denture

By combining implants and magnetic attraction, the design solves the problem of insufficient retention stability in removable dentures, achieving greater wearing comfort and stability, and extending their service life.

CN224345025UActive Publication Date: 2026-06-12YANGZHIJIN DENTAL LAB (BEIJING) CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YANGZHIJIN DENTAL LAB (BEIJING) CO LTD
Filing Date
2025-06-10
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

Existing removable dentures are insufficient in terms of retention and stability, and cannot provide enough support. This may cause pressure or friction on the gums or oral mucosa when chewing or speaking, and long-term use may lead to damage or inflammation of oral tissues.

Method used

Using implants as the support structure, chewing force is transmitted to the implants through connectors and then to the alveolar bone through the implants. The combination of neodymium magnets and soft magnets with a threaded connection design enhances the stability and retention of the denture. A sealing ring is set to prevent oral contaminants from entering, and the design of a detachable threaded connection makes it easy to replace and clean.

Benefits of technology

It improves wearing comfort, reduces the risk of gum discomfort and inflammation, enhances the stability and lifespan of dentures, and facilitates daily maintenance and cleaning.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the technical field of dentures, and discloses a partial removable denture which comprises a base, two plug-in joints and two implants, two clamping plates which are mirror-imaged are slidably arranged in two sliding grooves, two mounting holes are arranged in two dentures, neodymium magnets are fixedly connected to the bottom of the two mounting holes, and soft magnets are fixedly connected to the bottom of the two plug-in joints. The partial removable denture has the advantages that the implant serves as a supporting structure and is used for transmitting the pressure received during mastication to the implant through the plug-in joint, the stress burden of the gum area is reduced, gum discomfort or damage caused by excessive local stress is avoided, the denture can be quickly connected and separated with the plug-in joint through simple mechanical operation due to the arrangement of the through holes, the sliding grooves, the springs and the clamping plates, the user can clean the denture itself and the denture, the occurrence of oral diseases is prevented, and the service life of the denture is prolonged.
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Description

Technical Field

[0001] This application relates to the field of dental prosthesis technology, specifically to a partially removable denture. Background Technology

[0002] Dentures, commonly known as "false teeth," refer to teeth that fulfill their "duties" for humans. In medicine, they are a general term for restorations made after partial or complete loss of upper and lower jaw teeth, serving as replacements for missing teeth.

[0003] However, while existing removable dentures can be easily removed, they may be insufficient in terms of retention and stability, and may not provide enough support. This could cause pressure or friction on the gums or oral mucosa during chewing or speaking, and long-term use may lead to damage or inflammation of oral tissues, affecting the patient's normal use. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides a partial removable denture, which has advantages such as improved wearing comfort. It solves the problem that although existing removable dentures can be easily removed, they may be insufficient in terms of retention stability and may not provide enough support, which may cause pressure or friction on the gums or oral mucosa during chewing or speaking. Long-term use may lead to damage or inflammation of oral tissues and affect the patient's normal use.

[0005] To achieve the above objectives, this application provides the following technical solution: a partial removable denture, comprising a base, two connectors, and two implants. The base has two through holes arranged in a mirror-image configuration. The base also has two sliding grooves arranged in a mirror-image configuration. Two springs arranged in a mirror-image configuration are fixedly connected to both sides of the inner walls of the two sliding grooves. Two retaining plates arranged in a mirror-image configuration are slidably disposed within each of the two sliding grooves. Two dentures arranged in a mirror-image configuration are fixedly connected to the bottom of the base. Each denture has an installation hole. A neodymium magnet is fixedly connected to the bottom of each of the two installation holes. A partition is fixedly connected to the upper end of each of the two neodymium magnets. The outer walls of the two connectors each have retaining grooves. A soft magnet is fixedly connected to the bottom of each of the two connectors. A sealing ring is fixedly connected to the bottom of each of the two implants.

[0006] Through the above-described design, the implant, acting as a support structure, transmits the pressure exerted during chewing to the implant via the connector, and then the implant transmits the chewing force to the surrounding alveolar bone. This reduces the stress on the gingival area, preventing discomfort or damage to the gums that may result from excessive localized stress. Users experience a more natural and comfortable chewing experience, thus improving wearing comfort. The design, including through-holes, grooves, springs, and retainers, allows for quick connection and disconnection of the denture with the connector through simple mechanical operations, facilitating daily use and maintenance. The retainer within the groove engages with the retainer on the connector, forming a robust mechanical locking mechanism that ensures the denture is securely installed. The implant is firmly fixed to the connector, preventing it from easily falling off. The neodymium magnet inside the denture attracts the soft magnet inside the connector, providing additional fixing force and further enhancing the stability of the denture. This reduces the risk of loosening due to chewing or talking. The partition prevents the neodymium magnet from contacting the oral cavity, preventing saliva and other substances from affecting it. The sealing ring at the bottom of the implant prevents liquids and food debris from entering the connection between the implant and the connector, protecting the implant and surrounding tissues from contamination and damage. Because the denture can be easily removed, users can easily clean the denture itself and the oral areas in contact with it, effectively preventing oral diseases and increasing the lifespan of the denture.

[0007] Furthermore, both of the aforementioned connectors have threaded posts fixedly connected to their upper ends.

[0008] With the above solution, the threaded post, as the connecting component between the connector and the implant, can directly transmit the chewing force on the denture to the implant, ensuring the uniform distribution of force and reducing the stress on the gums. If a connector is damaged, it can also be removed and replaced separately.

[0009] Furthermore, both implant bodies have internal threads on their inner walls, and both implant bodies have external threads on their outer walls.

[0010] Through the above scheme, the internal threads on the inner wall of the implant body cooperate with the threaded post at the upper end of the connector to form a reliable mechanical connection, which enhances the stability between the connector and the implant. The external threads on the outer wall of the implant body enable the implant to better integrate with the alveolar bone, increasing the contact area and friction between the implant and the alveolar bone, thus improving the stability of the implant. The stable implant provides solid support for the denture and reduces the instability or pain that may be caused by implant loosening.

[0011] Furthermore, both of the threaded posts are threadedly connected to internal threads.

[0012] The above-mentioned design allows the chewing force on the denture to be transmitted to the implant more efficiently through the threaded post, and then distributed to the alveolar bone by the implant. This ensures uniform force distribution, reduces the stress on the gums, and because the threaded connection is detachable, it can be replaced individually if a connector is damaged.

[0013] Furthermore, both of the aforementioned connectors are slidably disposed inside the mounting holes, and both of the aforementioned soft magnets correspond to neodymium magnets.

[0014] With the above solution, the connector is slidably set inside the mounting hole of the denture, making the installation and removal of the denture more convenient. The user only needs to apply an outward pulling force to the base to pull the connector out from the mounting hole, thus realizing the quick installation or removal of the denture. The corresponding setting of the soft magnet and neodymium magnet allows the denture to obtain additional fixation force through magnetic attraction after it is installed in place.

[0015] Furthermore, the ends of the multiple springs that are away from the slide groove are fixedly connected to the card plates in pairs, and the four card plates are slidably arranged inside the card groove in pairs.

[0016] With the above solution, the four locking plates are slidably set in pairs inside the slots of the connector, forming a stable mechanical locking structure. This ensures that the denture can be firmly fixed to the connector after installation, reducing discomfort that may be caused by loose dentures and improving the stability and comfort of wearing it.

[0017] Furthermore, the ends of both sealing rings furthest from the implant are in contact with the upper end of the connector.

[0018] With the above solution, the sealing ring is placed at the connection between the implant and the connector, preventing saliva, food debris and bacteria in the oral cavity from entering the connection area, avoiding infection or inflammation that may be caused by the infiltration of contaminants, thereby maintaining a healthy oral environment.

[0019] Furthermore, the connector, threaded post, and implant are all made of titanium alloy, and the two sealing rings are made of medical-grade silicone.

[0020] Through the above-mentioned solution, the connector, threaded post, and implant are all made of titanium alloy. Titanium alloy has excellent biocompatibility, which can coexist harmoniously with human tissue, reducing allergic reactions and rejection. This reduces discomfort such as gingival redness and pain that may be caused by material incompatibility. Titanium alloy also has the characteristics of low density and high strength, which makes the denture components lighter while maintaining sufficient strength, reducing the burden during wearing and improving user comfort. Medical-grade silicone has good stability and is not prone to chemical reactions or degradation, thus ensuring the long-term effectiveness and reliability of the sealing ring.

[0021] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0022] This type of partially removable denture uses an implant as a supporting structure. The implant transmits the pressure from chewing to the implant via a connector, and then the implant transmits the chewing force to the surrounding alveolar bone, reducing the stress on the gingival area and preventing discomfort or damage to the gums caused by excessive localized stress. Users experience a more natural and comfortable chewing experience, thus improving wearing comfort. The design, including through-holes, grooves, springs, and retainers, allows for quick and easy connection and disconnection of the denture with the connector through simple mechanical operations, facilitating daily use and maintenance. The retainer within the groove cooperates with the retainer on the connector to form a stable mechanical locking mechanism, ensuring the denture remains securely in place after installation. The implant is firmly fixed to the connector, preventing it from easily falling off. The neodymium magnet inside the denture attracts the soft magnet inside the connector, providing additional fixing force and further enhancing the stability of the denture. This reduces the risk of loosening due to chewing or talking. The partition prevents the neodymium magnet from contacting the oral cavity, preventing saliva and other substances from affecting it. The sealing ring at the bottom of the implant prevents liquids and food debris from entering the connection between the implant and the connector, protecting the implant and surrounding tissues from contamination and damage. Because the denture can be easily removed, users can easily clean the denture itself and the oral areas in contact with it, effectively preventing oral diseases and increasing the lifespan of the denture. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this application;

[0024] Figure 2 This is a schematic diagram of the denture component structure of this application;

[0025] Figure 3 This is a schematic diagram of the implant structure in this application;

[0026] Figure 4 This is a cross-sectional view of the connector connection structure of this application.

[0027] Figure 5 This is a schematic diagram of the overall installation structure of the structure in this application.

[0028] In the picture:

[0029] 1. Base; 2. Through hole; 3. Slide; 4. Spring; 5. Clamping plate; 6. Denture; 7. Mounting hole; 8. Neodymium magnet; 9. Partition; 10. Connector; 11. Slot; 12. Soft magnet; 13. Threaded post; 14. Implant; 15. Internal thread; 16. External thread; 17. Sealing ring. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] Please see Figure 1 , Figure 2 and Figure 3 This embodiment of a partially removable denture includes a base 1, two connectors 10, and two implants 14. The implants 14 serve as a support structure, transmitting the pressure during chewing to the implants 14 via the connectors 10, and transmitting the chewing force to the surrounding alveolar bone via the implants 14. This reduces the stress on the gingival area and avoids potential gingival discomfort or damage due to excessive local stress. Using this denture 6 provides a more natural and comfortable chewing experience, thus improving wearing comfort. The base 1 has two through holes 2 arranged in a mirror-image configuration, and two sliding grooves 3 arranged in a mirror-image configuration. Two springs 4 arranged in a mirror-image configuration are fixedly connected to both sides of the inner wall of each sliding groove 3. Two retaining plates 5 arranged in a mirror-image configuration are slidably disposed within each sliding groove 3. The bottom end of the base 1 is fixedly connected to… Two dentures 6 are arranged in a mirror image. Each denture 6 has an installation hole 7 inside. A neodymium magnet 8 is fixedly connected to the bottom of each installation hole 7. A partition 9 is fixedly connected to the top of each neodymium magnet 8. The partition 9 is designed to prevent the neodymium magnet 8 from contacting the oral cavity, preventing saliva or other substances from affecting the neodymium magnet 8. Each connector 10 has a slot 11 on its outer wall. The retaining plate 5 in the slide groove 3 cooperates with the slot 11 on the connector 10 to form a stable mechanical locking mechanism, ensuring that the denture 6 is firmly fixed to the connector 10 after installation and is not easily dislodged. A soft magnet 12 is fixedly connected to the bottom of each connector 10. The neodymium magnet 8 inside the denture 6 attracts the soft magnet 12 inside the connector 10, providing additional fixing force and further enhancing the stability of the denture 6. A sealing ring 17 is fixedly connected to the bottom of each implant 14.

[0032] Please see Figure 3 , Figure 4 and Figure 5Both connectors 10 have threaded posts 13 fixedly connected to their upper ends. The threaded posts 13 serve as the connection between the connectors 10 and the implants 14, directly transmitting the chewing force from the denture 6 to the implants 14, ensuring even force distribution and reducing the stress on the gums. If one connector 10 is damaged, it can be removed and replaced individually. Both implants 14 have internal threads 15 on their inner walls and external threads 16 on their outer walls. The internal threads 15 on the inner walls of the implants 14 mate with the threaded posts 13 at the upper ends of the connectors 10, forming a reliable mechanical connection. The external threads 16 on the outer wall of the implant 14 enhance the stability between the connector 10 and the implant 14, allowing the implant 14 to better integrate with the alveolar bone. This increases the contact area and friction between the implant 14 and the alveolar bone, improving the stability of the implant 14. The stable implant 14 provides solid support for the denture 6, reducing the instability or pain that may be caused by the loosening of the implant 14. Both threaded posts 13 are threaded to the internal threads 15. This threaded connection design allows the chewing force on the denture 6 to be transmitted to the implant 14 more efficiently through the threaded posts 13. 4. The force is then distributed to the alveolar bone by the implant 14, ensuring even force distribution and reducing the stress on the gums. Because the threaded connection is detachable, a damaged connector 10 can be replaced individually. Both connectors 10 are slidably positioned inside the mounting holes 7. Both soft magnets 12 correspond to neodymium magnets 8. The connectors 10 slidably positioned inside the mounting holes 7 of the denture 6 make the installation and removal of the denture 6 more convenient. The user only needs to apply an outward pulling force to the base 1 to pull the connector 10 out of the mounting hole 7, thus achieving quick installation of the denture 6. The corresponding arrangement of the soft magnet 12 and neodymium magnet 8 allows the denture 6 to obtain additional fixing force through magnetic attraction after installation or removal. The ends of multiple springs 4, which are in pairs away from the slide groove 3, are fixedly connected to the retaining plate 5. The four retaining plates 5 are slidably arranged in pairs inside the retaining groove 11. The four retaining plates 5 are slidably arranged in pairs inside the retaining groove 11 of the connector 10, forming a stable mechanical locking structure. This ensures that the denture 6 can be firmly fixed on the connector 10 after installation, reducing discomfort that may be caused by the denture 6 becoming loose, and improving the stability and comfort of wearing it.

[0033] Please see Figure 1 , Figure 3 and Figure 5The ends of the two sealing rings 17 furthest from the implant 14 are in contact with the upper end of the connector 10. The sealing rings 17 are located at the connection between the implant 14 and the connector 10, preventing saliva, food debris, and bacteria in the oral cavity from entering the connection area, avoiding infection or inflammation that may be caused by the infiltration of contaminants, thereby maintaining a healthy oral environment. The connector 10, threaded post 13, and implant 14 are all made of titanium alloy, and the two sealing rings 17 are made of medical-grade silicone. Titanium alloy has excellent biocompatibility, can coexist harmoniously with human tissue, reduces allergic reactions and rejection, thereby reducing discomfort such as gingival redness and pain that may be caused by material discomfort. Titanium alloy also has the characteristics of low density and high strength, which makes the denture 6 components lighter while maintaining sufficient strength, reducing the burden when wearing and improving user comfort. Medical-grade silicone has good stability and is not prone to chemical reactions or degradation, thus ensuring the long-term effectiveness and reliability of the sealing rings 17.

[0034] In this embodiment, the partially removable denture uses the implant 14 as a support structure to transmit the pressure during chewing to the implant 14 via the connector 10, and then transmits the chewing force to the surrounding alveolar bone via the implant 14. This reduces the stress on the gingival area and avoids potential gingival discomfort or damage caused by excessive local stress. Using this denture 6 provides a more natural and comfortable chewing experience, thus improving wearing comfort. The through-hole 2, slide 3, spring 4, and retainer 5 allow for quick connection and separation of the denture 6 with the connector 10 through simple mechanical operation, facilitating daily use and maintenance. The retainer 5 within the slide 3 cooperates with the retainer 11 on the connector 10 to form a stable mechanical locking mechanism, ensuring the denture 6 remains secure after installation. The denture 6 is securely fixed to the connector 10, preventing it from easily falling off. The neodymium magnet 8 inside the denture 6 attracts the soft magnet 12 inside the connector 10, providing additional fixing force and further enhancing the stability of the denture 6. This reduces the risk of the denture 6 loosening due to chewing or talking. The partition 9 prevents the neodymium magnet 8 from contacting the inside of the oral cavity, preventing saliva and other substances from affecting the neodymium magnet 8. The sealing ring 17 at the bottom of the implant 14 prevents liquids and food debris from entering the connection between the implant 14 and the connector 10, protecting the implant 14 and surrounding tissues from contamination and damage. Since the denture 6 can be easily removed, users can easily clean the denture 6 itself and the oral area in contact with it, effectively preventing oral diseases and increasing the lifespan of the denture 6.

[0035] The working principle of the above embodiments is as follows:

[0036] First, the implant 14 is inserted into the alveolar bone at the site of tooth loss. A stable osseointegration base is formed with the alveolar bone through the external thread 16. The connector 10 is rigidly connected to the implant 14 through the threaded post 13. When wearing the denture, the connector 10 is passed through the through hole 2 inside the base 1 and slidably placed inside the mounting hole 7. The mounting hole 7 is aligned with the connector 10 and pressed down. The retainer 5 automatically snaps into the slot 11 under the action of the spring 4 to form a mechanical lock. At the same time, the neodymium magnet 8 and the soft magnet 12 generate magnetic attraction, achieving dual fixation by mechanical and magnetic forces. The chewing force is transmitted to the connector 10 through the denture 6 and distributed to the implant 14 and alveolar bone through the threaded post 13, avoiding excessive local stress on the gums. The sealing ring 17 effectively isolates the oral environment and prevents bacteria from invading the connection interface. When disassembling, applying appropriate external force can overcome the magnetic attraction and the pressure of the spring 4, allowing the retainer 5 to detach from the slot 11, and the denture 6 to be quickly removed.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A partially removable denture, comprising a base (1), two connectors (10), and two implants (14), characterized in that: The base (1) has two through holes (2) arranged in a mirror image. The base (1) has two sliding grooves (3) arranged in a mirror image. Two springs (4) are fixedly connected to both sides of the inner wall of the two sliding grooves (3). Two retaining plates (5) are slidably arranged in a mirror image inside the two sliding grooves (3). Two dentures (6) arranged in a mirror image are fixedly connected to the bottom of the base (1). The two dentures (6) have mounting holes (7) inside. Neodymium magnets (8) are fixedly connected to the bottom of the two mounting holes (7). A partition (9) is fixedly connected to the upper end of the two neodymium magnets (8). The outer wall of the two connectors (10) has a retaining groove (11). A soft magnet (12) is fixedly connected to the bottom of the two connectors (10). A sealing ring (17) is fixedly connected to the bottom of the two implants (14).

2. A partially removable denture according to claim 1, characterized in that: Both of the two connectors (10) have a threaded post (13) fixedly connected to their upper ends.

3. A partially removable denture according to claim 1, characterized in that: Both implants (14) have internal threads (15) on their inner walls and external threads (16) on their outer walls.

4. A partially removable denture according to claim 2, characterized in that: Both of the threaded posts (13) are threaded to the internal thread (15).

5. A partially removable denture according to claim 1, characterized in that: Both of the connectors (10) are slidably disposed inside the mounting hole (7), and both of the soft magnets (12) correspond to the neodymium magnets (8).

6. A partially removable denture according to claim 1, characterized in that: The ends of the multiple springs (4) that are away from the slide groove (3) are fixedly connected to the card plate (5) in pairs, and the four card plates (5) are slidably arranged in pairs inside the card groove (11).

7. A partially removable denture according to claim 1, characterized in that: The ends of the two sealing rings (17) away from the implant (14) are in contact with the upper end of the connector (10).

8. A partially removable denture according to claim 1, characterized in that: The connector (10), threaded post (13), and implant (14) are all made of titanium alloy, and the two sealing rings (17) are made of medical-grade silicone.