A combination denture structure

Abstract

The application discloses a combined denture structure, relates to the field of dentures, and comprises tooth crowns and implants, the number of the implants is less than the number of the tooth crowns, a connecting ring is detachably connected to the lower end of the tooth crowns, a positioning column is fixedly connected to the top end of the implants, a round hole is arranged in the connecting ring, a clamping groove is arranged on the periphery of the positioning column, elastic bodies are connected to the two sides of the round hole in the connecting ring, and lock tongues are fixedly connected to the ends of the elastic bodies; the connecting ring in the lower end of the tooth crowns can be detached from the tooth crowns, the positioning column of the top end of the implants passes through the round hole of the connecting ring, the elastic bodies on the two sides of the round hole drive the lock tongues to be matched with the clamping groove on the periphery of the positioning column, the connecting ring and the implants are fixed, the lock tongues are made of metal materials that can be magnetically attracted, the tooth crowns and the implants can be conveniently detached through magnetic force, and therefore, the installation stability and the detachment convenience are considered.

Description

Technical Field

[0001] This application relates to the field of dentures, and in particular to a modular denture structure. Background Technology

[0002] For elderly patients with moderate alveolar bone resorption and missing more than six consecutive teeth, existing restorative methods have significant limitations: traditional implant-supported dentures require implants that match the number of missing teeth, but elderly patients often lack sufficient bone volume to withstand the surgical trauma of multiple implants; removable dentures rely on the base and mucosa for retention, resulting in poor stability and a tendency to dislodge during chewing, affecting eating; fixed bridge restorations require grinding down healthy adjacent teeth as abutment teeth and have high requirements for the remaining alveolar bone condition, making them unsuitable for elderly patients with insufficient bone volume.

[0003] Existing dental implant connection structures struggle to balance stability and ease of disassembly: screw-fixed connections are stable, but disassembly requires specialized tools, necessitating frequent follow-up visits for elderly patients; snap-on connections are easy to disassemble but are prone to loosening due to chewing forces, leading to denture displacement and increasing the risk of gum abrasion, thus failing to meet the dual needs of elderly patients for both installation stability and ease of disassembly. Utility Model Content

[0004] To address the issue that existing implant-supported dentures cannot meet the dual needs of elderly patients for both stable installation and easy disassembly, this application provides a modular denture structure.

[0005] The combined denture structure provided in this application adopts the following technical solution:

[0006] A modular denture structure includes several crowns and two or more implants, wherein the number of implants is less than the number of crowns, a jaw is fixedly installed below the crowns, and a connecting ring for connecting the implants is detachably connected to the lower end of the crowns.

[0007] The top of the implant is fixedly connected to a positioning post. The connecting ring has a circular hole for the positioning post to pass through. The periphery of the positioning post is provided with a slot. An elastic body is connected to both sides of the circular hole in the connecting ring. A locking tongue is fixedly connected to the end of the elastic body. The locking tongue is made of a magnetically attracted metal material and is adapted to the slot.

[0008] By adopting the above technical solution, several crowns are connected into a whole through the fixed installation of the lower jaw. The connecting ring inside the lower end of the crown can be detached from the crown. The positioning post at the top of the implant passes through the round hole of the connecting ring. The elastic bodies on both sides of the round hole drive the locking tongue to match the slot around the positioning post, thereby fixing the connecting ring and the implant. The locking tongue is made of a metal material that can be attracted by magnets, which is convenient for disassembly by magnetic force. Since the number of implants is less than the number of crowns, multiple crowns can be supported by a small number of implants, realizing the combined fixation of multiple crowns with fewer implants, while taking into account both installation stability and disassembly convenience.

[0009] Preferably, a connecting hole is provided below the crown, and an external thread is provided on the outer periphery of the top end of the connecting ring, and the connecting ring is threaded into the connecting hole through the external thread.

[0010] By adopting the above technical solution, the connecting hole under the crown and the external thread on the outer periphery of the top of the connecting ring are engaged, so that the connecting ring is connected to the connecting hole through the external thread. This not only achieves a stable connection between the connecting ring and the crown, but also facilitates the disassembly and replacement of both.

[0011] Preferably, the lower end of the implant is provided with a threaded rod, and a frustum is fixedly connected to the top end of the threaded rod. The diameter of the frustum gradually decreases from bottom to top. The connection hole is provided with a trumpet-shaped opening near the opening, and the inner wall of the trumpet-shaped opening of the connection hole fits against the conical curved surface above the frustum.

[0012] By adopting the above technical solution, the threaded rod at the lower end of the implant facilitates the fixation of the implant in the alveolar bone. The truncated cone at the top of the threaded rod, whose diameter gradually decreases from bottom to top, fits against the inner wall of the funnel-shaped opening near the opening of the connection hole. The conical curved surface enhances the sealing and stability of the connection between the connection hole and the implant.

[0013] Preferably, a regular frustum is fixedly connected above the frustum, and the diameter of the regular frustum gradually decreases from bottom to top.

[0014] By adopting the above technical solution, the regular frustum with a diameter that gradually decreases from bottom to top on the top of the frustum can serve as a transitional connection between the frustum and the structure above.

[0015] Preferably, the lower part of the connecting hole in the connecting ring is connected to a multi-faceted hole, and the lower inner wall of the multi-faceted hole is in contact with the upper surface of the outer ring of the regular truncated pyramid.

[0016] By adopting the above technical solution, the multi-faceted hole connected below the connecting hole in the connecting ring, and the inner wall of the lower end of the connecting ring fitting together with the upper surface of the outer ring of the truncated pyramid, the stability and sealing of the connection between the connecting ring and the implant are further enhanced by the shape adaptation of the multi-faceted hole and the truncated pyramid.

[0017] Preferably, a regular prism is fixedly connected above the regular frustum, and the outer wall of the regular prism and the upper inner wall of the polygonal hole are in contact with each other.

[0018] By adopting the above technical solution, the outer wall of the prism above the prism fits into the inner wall of the upper end of the multi-faceted hole. The shape matching of the prism and the multi-faceted hole further enhances the stability of the connection between the connecting ring and the implant.

[0019] Preferably, the lower outer wall of the connecting ring matches the inner wall of the connecting hole.

[0020] By adopting the above technical solution, the lower outer wall of the connecting ring and the inner wall of the connecting hole fit together. The tight fit enhances the sealing between the connecting ring and the connecting hole, reduces the entry of foreign objects into the gap, and improves the stability of the connection.

[0021] Preferably, the positioning post is fixedly installed on top of the regular prism, and the upper end of the positioning post is tapered.

[0022] By adopting the above technical solution, the positioning post is fixedly installed on top of the prism, and the prism provides stable support for the positioning post. The upper end of the positioning post is tapered, which facilitates its smooth passage through the circular hole of the connecting ring, ensuring the smoothness of the installation process.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. This utility model is suitable for elderly patients with moderate alveolar bone resorption. It supports multiple crowns with a small number of implants, reducing the number of implants and thus reducing surgical trauma. At the same time, it uses an elastomer to drive the locking tongue and the slot to achieve stable fixation. The magnetic locking tongue can be easily removed by magnetic force, which takes into account both installation stability and maintenance convenience.

[0025] 2. This application connects multiple crowns into a whole through the gum line, which improves the distribution of force during chewing, avoids loosening caused by excessive force on a single crown, and enhances the overall stability of the denture; in addition, magnetic disassembly does not require complicated tools, and elderly patients or their families can operate it themselves, reducing the number of follow-up visits, lowering the threshold for use, and improving the user experience for elderly patients.

[0026] 3. The structure in this application, in which the lower outer wall of the connecting ring matches the inner wall of the connecting hole and the frustum fits the funnel-shaped opening of the connecting hole, can reduce the gap between components, reduce the probability of saliva and food residue retention from the source, reduce the conditions for bacterial growth, and thus reduce the risk of hygiene-related complications such as gingivitis and peri-implantitis. Attached Figure Description

[0027] Figure 1 This is an exploded view of this application;

[0028] Figure 2 This is a schematic diagram of the connection between the gum and the crown in this application;

[0029] Figure 3 This is a schematic diagram of the implant in this application;

[0030] Figure 4 This is a schematic diagram of the connecting ring in this application. Figure 1 ;

[0031] Figure 5 This is a schematic diagram of the connecting ring in this application. Figure 2 ;

[0032] Figure 6 This is a partial sectional view of this application;

[0033] Figure 7 For the purposes of this application Figure 6 Enlarged view of point A.

[0034] Figure label:

[0035] 1. Gland; 2. Crown; 21. Connecting hole; 3. Connecting ring; 31. Round hole; 32. Multi-faceted hole; 33. Elastomer; 34. Locking tongue; 35. External thread;

[0036] 4. Implant; 41. Threaded rod; 42. Frustum; 43. Regular frustum; 44. Regular prism; 45. Slot; 46. Positioning post. Detailed Implementation

[0037] The following is in conjunction with the appendix Figures 1-7 This application will be described in further detail.

[0038] This application discloses a modular denture structure.

[0039] Reference Figure 1 , Figure 2 A modular denture structure includes a dental arch 1, which is made of methyl methacrylate resin base material in the prior art. Six or more crowns 2 are fixedly installed on the dental arch 1. The crowns 2 are made of zirconium oxide ceramic material in the prior art. There are two or more connecting holes 21 below the six or more crowns 2. The number of connecting holes 21 is less than the number of crowns 2. Connecting rings 3 are detachably connected in all connecting holes 21. Implants 4 are installed on the crowns 2 through the connecting rings 3. The implants 4 are made of pure titanium material in the prior art.

[0040] The denture base 1, made of methyl methacrylate resin, can stably connect multiple zirconia ceramic crowns 2 into a whole, ensuring the overall structural support strength of the denture while providing good oral adaptability and comfort. By setting a small number of connecting holes 21, multiple crowns 2 can be connected to multiple pure titanium implants 4 through a small number of connecting rings 3, realizing a combination connection of multiple crowns 2 supported by a small number of implants 4. This reduces the number of implants 4 to reduce surgical trauma, while relying on the biocompatibility and stability of the pure titanium implants 4 to provide reliable support for the crowns 2.

[0041] refer to Figure 4 , Figure 5 The connecting ring 3 has an external thread 35 fixedly provided on the outer periphery of its top end. The connecting ring 3 is connected to the inner wall of the connecting hole 21 through the external thread 35. The connecting ring 3 has a round hole 31 for connecting the top end of the implant 4. Two cuboid grooves are connected to both sides of the round hole 31 in the connecting ring 3. An elastic body 33 is provided in the groove. The elastic body 33 is a rubber block made of medical silicone rubber. The overall shape of the elastic body 33 is cuboid. The end of the elastic body 33 away from the round hole 31 is fixedly connected to the inner wall of the groove. The main body of the elastic body 33 slides and compresses to connect. When the connecting ring 3 is tightened into the connecting hole 21 in the crown 2, the upper surface of the elastic body 33 and the inner wall of the connecting hole 21 come into contact with each other. The end of the elastic body 33 is fixedly connected to a locking tongue 34 with a trapezoidal cross section. The locking tongue 34 is slidably connected in the groove. The locking tongue 34 is made of metal material, which is attracted by magnetism. The lower outer wall of the connecting ring 3 fits into the inner wall of the connecting hole 21. The lower part of the connecting hole 21 in the connecting ring 3 is coaxially connected to a polygonal hole 32. The polygonal hole 32 is designed to facilitate the rotation of the connecting ring 3.

[0042] The external thread 35 at the top of the connecting ring 3 is threaded to the inner wall of the connecting hole 21, which not only securely fixes the connecting ring 3 to the crown 2, but also allows for the removal and removal of the crown 2 and the connecting ring 3 by rotating the connecting ring 3. This operation is convenient and provides a strong seal. The circular hole 31 of the connecting ring 3 provides a precise insertion channel for the tip of the implant 4, ensuring coaxial alignment between the implant 4 and the connecting ring. The cuboid grooves on both sides of the circular hole 31 provide installation and movement space for the elastic body 33. The elastic body 33 is cuboid, with one end of the elastic body away from the circular hole 31 fixed to the inner wall of the groove. The main body slides and compresses within the groove, and the elastic body 33 is confined between the groove and the inner wall of the connecting hole 21, ensuring that the elastic body 33 extends only horizontally along the groove. To prevent the elastic body 33 and the locking tongue 34 from shifting, the trapezoidal cross-section locking tongue 34 at the end of the elastic body 33 is made of a magnetically attractive metal material, specifically a medical-grade cobalt-chromium alloy manufactured by metal injection molding. This allows the locking tongue 34 to be fixed by the elastic force of the elastic body 33, and can also be disassembled by the external strong magnetic attraction of the locking tongue 34. The matching connection between the lower outer wall of the connecting ring 3 and the inner wall of the connecting hole 21 can further enhance the sealing between the connecting ring 3 and the crown 2, reducing the entry of food debris or saliva into the gap. It should be added that the above-mentioned elastic body 33 can also be made of a medical-grade 316L stainless steel spring, which has higher fatigue resistance than medical-grade silicone rubber blocks.

[0043] refer to Figure 3 The top of the implant 4 is coaxially fixedly connected to a positioning post 46. The upper end of the positioning post 46 is tapered, with its diameter gradually decreasing from bottom to top. The positioning post 46 passes upward through the circular hole 31. A groove 45 adapted to the locking tongue 34 is coaxially provided on the periphery of the positioning post 46. The lower end of the implant 4 is provided with a threaded rod 41 for connecting to the alveolar bone. The top end of the threaded rod 41 is fixedly connected to a frustum 42 with its diameter gradually decreasing from bottom to top. The connection hole 21 is provided with a feature near the opening for... The cone-shaped opening of the sealing surface is attached to the inner wall of the cone-shaped opening of the connecting hole 21. A regular truncated pyramid 43 with a diameter gradually decreasing from bottom to top is fixedly connected above the cone 42. The upper surface of the outer ring of the regular truncated pyramid 43 is attached to the lower inner wall of the polygonal hole 32. A regular prism 44 is coaxially fixed between the regular truncated pyramid 43 and the upper positioning post 46. The outer wall of the regular prism 44 is attached to the upper inner wall of the polygonal hole 32.

[0044] The positioning post 46, coaxially fixed at the top of the implant 4, has a tapered shape that gradually decreases in diameter from bottom to top. This tapered design guides the positioning post 46 to pass quickly and smoothly through the circular hole 31 of the connecting ring 3, reducing the difficulty of alignment during installation. The slot 45 coaxially set around the positioning post 46 can precisely fit with the locking tongue 34. The locking tongue 34 engages with the slot 45 to quickly fix the connecting ring 3 and the implant 4, ensuring that the denture does not loosen during use. The threaded rod 41 at the lower end of the implant 4 can be directly screwed into the patient's alveolar bone. The threaded structure enables implantation and provides stable fixation in the oral cavity, providing core support for the entire denture structure. The tapered surface above the frustum 42 at the top of the threaded rod 41... The inner wall of the funnel-shaped opening near the opening of the connecting hole 21 fits against the connecting hole 21. The funnel-shaped opening serves as a sealing surface and, together with the conical curved surface of the frustum 42, forms a double sealing structure. This effectively prevents foreign objects from entering the gap between the implant 4 and the connecting hole 21, reducing the risk of gingival infection. The regular frustum 43 fixed above the frustum 42 has its lower inner wall fitted against the upper surface of the outer ring of the regular frustum 43. This fitting structure enhances the connection stability between the connecting ring 3 and the implant 4. The regular frustum 43 and the regular prism 44 are coaxially fixedly connected. The outer wall of the regular prism 44 fits against the upper inner wall of the polygonal hole 32. The polygonal structure of the regular prism 44 and the polygonal hole 32 further enhances the overall stability of the denture.

[0045] refer to Figure 6 , Figure 7 For elderly patients with moderate alveolar bone resorption and loss of more than six consecutive teeth, this modular denture structure can achieve precise fitting and application: it uses two or more pure titanium implants 4, which are screwed into the patient's alveolar bone through the lower threaded bar 41. Only two or more implant sites are needed to complete the implantation, reducing surgical trauma and bleeding, and is more suitable for the physical tolerance of elderly patients. Six or more zirconia ceramic crowns 2 are connected into a whole by methyl methacrylate resin jaw 1, which not only restores the chewing strength and aesthetics of natural teeth, but also connects to the implants 4 through two or more connecting rings 3. The combined structure of multiple crowns 2 is supported by a small number of implants 4, avoiding the loosening and chewing weakness caused by alveolar bone resorption in traditional complete dentures.

[0046] During installation, the tapered design of the positioning post 46 guides it to quickly pass through the round hole 31 of the connecting ring 3. The elastic body 33 automatically drives the locking tongue 34 to engage with the slot 45 for fixation, eliminating the need for complex tools. When the patient needs to clean their mouth or replace the crown 2 later, a special external strong magnet is placed on the outside of the crown 2 to provide magnetic force, which attracts the magnetic metal locking tongue 34 to disengage from the slot 45, allowing for the disassembly of the jaw 1, crown 2, and implant 4. The operation is simple and does not require frequent visits to the dentist. At the same time, the sealing of the frustum 42 and the flared opening, and the fit between the connecting ring 3 and the connecting hole 21, effectively prevent food debris from entering the gaps, reducing the difficulty of oral cleaning for elderly patients. The overall structure combines stability, comfort, and convenience, meeting the daily chewing needs of elderly patients with missing teeth, such as those chewing rice and meat, while reducing the risk of oral complications and improving the patient's quality of life. It should be noted that the aforementioned special external strong magnet is made of neodymium iron boron strong magnets adapted to the arrangement of the patient's denture crown 2.

[0047] The above are merely optional embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A modular denture structure comprising a plurality of crowns (2) and two or more implants (4), wherein the number of implants (4) is less than the number of crowns (2), characterized in that: A dental arch (1) is fixedly installed below several of the crowns (2), and a connecting ring (3) for connecting an implant (4) is detachably connected to the lower end of several of the crowns (2); The top of the implant (4) is fixedly connected to a positioning post (46). The connecting ring (3) has a round hole (31) for passing through the positioning post (46). The periphery of the positioning post (46) is provided with a slot (45). An elastic body (33) is connected to both sides of the round hole (31) in the connecting ring (3). The end of the elastic body (33) is fixedly connected to a locking tongue (34). The locking tongue (34) is made of a metal material that is attracted by magnetism. The locking tongue (34) is adapted to the slot (45).

2. The modular denture structure according to claim 1, characterized in that: The crown (2) has a connecting hole (21) at its lower part, and the connecting ring (3) has an external thread (35) on its top periphery. The connecting ring (3) is threaded into the connecting hole (21) through the external thread (35).

3. The modular denture structure according to claim 2, characterized in that: The lower end of the implant (4) is provided with a threaded rod (41), and the top end of the threaded rod (41) is fixedly connected to a frustum (42). The diameter of the frustum (42) gradually decreases from bottom to top. The connection hole (21) is provided with a trumpet-shaped opening near the opening. The inner wall of the trumpet-shaped opening of the connection hole (21) fits against the conical curved surface above the frustum (42).

4. The modular denture structure according to claim 3, characterized in that: A regular truncated pyramid (43) is fixedly connected above the truncated pyramid (42), and the diameter of the regular truncated pyramid (43) gradually decreases from bottom to top.

5. The modular denture structure according to claim 4, characterized in that: The lower part of the connecting hole (21) in the connecting ring (3) is connected to a multi-faceted hole (32), and the lower inner wall of the multi-faceted hole (32) is in contact with the upper surface of the outer ring of the regular truncated pyramid (43).

6. A modular denture structure according to claim 5, characterized in that: A regular prism (44) is fixedly connected above the regular frustum (43), and the outer wall of the regular prism (44) and the upper inner wall of the polygonal hole (32) are in contact with each other.

7. A modular denture structure according to claim 4, characterized in that: The lower outer wall of the connecting ring (3) matches the inner wall of the connecting hole (21).

8. A modular denture structure according to claim 6, characterized in that: The positioning post (46) is fixedly installed above the regular prism (44), and the upper end of the positioning post (46) is conical.

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