A modular denture with adjustable mounting height

Abstract

This invention discloses a modular denture with adjustable installation height, comprising an installation base with multiple installation cavities at the top and multiple positioning slots at the bottom; multiple dentures are movably fitted into their respective installation cavities, with their roots movable vertically within the cavities; and a lifting drive mechanism, embedded in each installation cavity, for independently driving the corresponding denture for height adjustment; the lifting drive mechanism includes: an adjusting shaft horizontally rotatable inside the installation base, one end of which extends out of the side wall of the installation base to form an operating end; and a driven shaft vertically rotatable within the installation cavity; when the adjusting shaft rotates, it drives the driven shaft and lead screw to rotate via a bevel gear transmission mechanism, causing the threaded slider and dentures to rise and fall vertically, thereby achieving denture height adjustment. This invention solves the problem that most existing dentures use a fixed connection with the base, making it difficult to adjust the height after installation and to personalize the adjustment according to the actual height of the patient's natural teeth.

Description

Technical Field

[0001] This invention relates to the field of dental technology, and in particular to a modular denture with adjustable mounting height. Background Technology

[0002] Tooth loss directly affects a patient's chewing function, facial aesthetics, and speech clarity. Clinically, removable dentures, fixed dentures, or implant dentures are commonly used for restoration. Among these, modular removable dentures are widely used in patients with missing teeth, especially those with uneven remaining tooth conditions, due to their wide range of fit and ease of cleaning and maintenance.

[0003] Existing modular dentures typically consist of a base and dentures fixed to the base. The dentures and base are mostly bonded or integrally molded structures, making it difficult to adjust the height after installation and to personalize the fit according to the actual height of the patient's natural teeth. Therefore, this invention proposes a modular denture with adjustable installation height to solve the above problems. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a modular denture with adjustable installation height.

[0005] To achieve the above objectives, the present invention provides a modular denture with adjustable mounting height, comprising: The mounting base has multiple mounting cavities at the top and multiple positioning slots at the bottom. Multiple dentures are movably fitted into their respective mounting cavities, and their roots can move vertically within the cavities; The lifting drive mechanism is embedded in each mounting cavity and is used to independently drive the corresponding denture to adjust its height. The lifting drive mechanism includes: an adjusting shaft that is laterally rotatably disposed inside the mounting base, with one end extending out of the side wall of the mounting base to form an operating end; a driven shaft that is vertically rotatably disposed within the mounting cavity; a bevel gear transmission mechanism connecting the adjusting shaft and the driven shaft; a lead screw coaxially mounted on the top of the driven shaft; and a threaded slider threaded onto the lead screw. A vertical groove is longitudinally provided at the center of the bottom of the denture, and the threaded slider is fixedly disposed within the vertical groove. When the adjusting shaft rotates, the driven shaft and the lead screw are driven to rotate via the bevel gear transmission mechanism, causing the threaded slider and the denture to rise and fall vertically, thereby achieving denture height adjustment.

[0006] Furthermore, the operating end of the adjusting shaft is provided with a slot for inserting a tool for rotation, and the outer side of the mounting base is provided with a groove, the operating end of the adjusting shaft is located in the groove, and the bevel gear transmission mechanism includes a driving bevel gear fixedly sleeved on the adjusting shaft and a driven bevel gear fixedly sleeved on the driven shaft, wherein the driven bevel gear meshes with the driving bevel gear for transmission.

[0007] Furthermore, the mounting base is provided with a first bearing groove inside, and a first bearing is fixedly installed in the first bearing groove. The adjusting shaft is rotatably installed in the mounting base through the first bearing. A support plate is fixedly installed in the mounting cavity. A second bearing groove is provided through the top center of the support plate. A second bearing is fixedly installed in the second bearing groove. The driven shaft is rotatably installed in the mounting cavity through the second bearing.

[0008] Furthermore, L-shaped plates are fixedly installed at the four corners of the top of the support plate, and the base of the denture is provided between the four L-shaped plates in a limiting movable bracket. The adjusting shaft, the driving bevel gear, the driven shaft, the driven bevel gear, the lead screw, and the threaded slider are all made of medical-grade titanium alloy.

[0009] Furthermore, the inner contact surface of the positioning slot forms a biomimetic arc-shaped contour, the radius of curvature of which matches the physiological curvature of the human alveolar ridge, thus achieving a contour adaptation to the patient's alveolar ridge. A silicone bonding layer is attached to the surface of the biomimetic arc-shaped contour of the positioning slot, and the surface of the silicone bonding layer facing the inner side of the positioning slot is processed to form a honeycomb-shaped micro-pressure relief groove, which is a regular hexagonal structure.

[0010] Furthermore, each of the L-shaped plates is provided with a telescopic rod on one side, the telescopic rod is fixedly installed on the top of the support plate, and the four corners of the bottom of the denture are provided with slots. The top of the telescopic rod is locked in the slot, and a medical silicone cushion with a thickness of 0.8-1.2mm is bonded to the top end face of the telescopic rod. The medical silicone cushion completely fills the assembly gap between the top of the telescopic rod and the inner wall of the slot.

[0011] Furthermore, a positioning mechanism for limiting the rotation of the adjusting shaft is provided in the groove. The positioning mechanism includes a U-shaped block, a limiting block is fixedly provided on the inner side of the U-shaped block, the limiting block is limited and locked in the slot, and a limiting groove is provided on the inner side of the groove corresponding to the U-shaped block. The U-shaped block is inserted and installed in the limiting groove.

[0012] Furthermore, a circular block is fixedly provided at the top of the driven shaft, and a threaded insert rod is fixedly provided at the top of the circular block. A threaded slot is longitudinally provided at the bottom of the lead screw, and the threaded insert rod is threadedly inserted into the threaded slot. A rubber ring is provided at the top of the threaded slot.

[0013] Furthermore, the mounting base is provided with an adjustment channel communicating with the mounting cavity, the adjustment shaft passes through the adjustment channel, the groove is filled with dental resin to help fix the adjustment shaft and make the groove surface flat, and the gap between the mounting cavity and the denture is filled with a dental light-cured resin sealing layer to prevent liquid from seeping into the interior of the mounting cavity.

[0014] Furthermore, a crossbar is fixedly installed on the side of the mounting cavity away from the first bearing, and a stabilizing bevel gear is rotatably connected to the end of the crossbar via a rotating shaft. The stabilizing bevel gear meshes with the driven bevel gear.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention achieves independent height adjustment for each denture by setting multiple mounting cavities on the top of the mounting base and setting an independent lifting drive mechanism in each mounting cavity. This solves the problem of the non-adjustable height of dentures after installation in the prior art, and enables dentures to be adjusted in a personalized manner according to the actual height of the natural teeth in different positions in the patient's mouth.

[0016] This invention uses L-shaped plates at the four corners of the top of the support plate to limit and lock the base of the denture, and a telescopic rod on one side of the L-shaped plate to cooperate with the slots at the four corners of the bottom of the denture, forming a double guide support structure. This effectively prevents the denture from tilting and shaking during the lifting process and improves the stability of the lifting movement.

[0017] This invention achieves a conformal fit to the patient's alveolar ridge by setting a positioning slot at the bottom of the mounting base and forming a biomimetic arc-shaped contour that matches the physiological curvature of the human alveolar ridge on the inner side of the positioning slot. Combined with the silicone bonding layer and the honeycomb-shaped micro-pressure relief grooves on its surface, it disperses chewing pressure, reduces local pressure, and improves the stability and comfort of wearing.

[0018] This invention achieves reliable locking of the adjusting shaft by setting a positioning mechanism consisting of a U-shaped block, a limiting block, and a limiting groove in the groove, and filling the groove with dental resin and the gap between the mounting cavity and the denture with a dental light-cured resin sealing layer after adjustment. This prevents height changes caused by vibration or external force during use, and also avoids liquid seepage into the mounting cavity.

[0019] The height adjustment mechanism of this invention adopts a purely mechanical transmission structure, which does not rely on electronic components or electric drive. It is fully adaptable to the complex usage environment of the oral cavity with moisture and temperature differences, and avoids potential risks such as electronic component failure and battery leakage. Attached Figure Description

[0020] To more clearly illustrate the solutions in this invention, the accompanying drawings used in the description of the embodiments of this invention 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.

[0021] Figure 1 This is a top view structural diagram of Embodiment 1 provided by the present invention; Figure 2 This is a cross-sectional view of Embodiment 1 provided by the present invention; Figure 3 This is an enlarged schematic diagram of part A of Embodiment 1 provided by the present invention; Figure 4 This is an enlarged schematic diagram of part B of Embodiment 1 provided by the present invention; Figure 5 This is a schematic diagram of the connection structure between the lead screw and the driven shaft provided by the present invention; Figure 6 This is a cross-sectional view of an embodiment provided by the present invention; Explanation of reference numerals in the attached figures: 1. L-shaped plate; 2. Mounting cavity; 3. Support plate; 4. Crossbar; 5. Rotating shaft; 6. Positioning slot; 61. Bionic arc contour; 62. Silicone bonding layer; 7. Stabilizing bevel gear; 8. Vertical groove; 9. Lead screw; 10. Mounting base; 11. Denture; 12. Second bearing; 13. Driven shaft; 14. Driven bevel gear; 15. Driving bevel gear; 16. Threaded slider; 17. Slot; 18. Telescopic rod; 19. Rubber ring; 20. Threaded slot; 21. Threaded insert; 22. Round block; 23. First bearing groove; 24. First bearing; 25. Adjusting shaft; 26. Groove; 27. Positioning mechanism; 271. U-shaped block; 272. Limiting block; 28. Slot; 29. ​​Limiting groove; 30. Second bearing groove; 31. Adjustment channel; 32. Medical silicone cushioning pad. Detailed Implementation

[0022] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] The terms "comprising" and "having," and any variations thereof, used in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order.

[0024] Example 1 Please see Figure 1-3 and Figure 4-5A height-adjustable modular denture includes: a mounting base 10 with multiple mounting cavities 2 at its top, each cavity 2 for mounting a denture 11; multiple positioning slots 6 correspondingly located at the bottom of the mounting base 10; the inner contact surface of the positioning slots 6 forming a biomimetic arc-shaped contour 61; the radius of curvature of the biomimetic arc-shaped contour 61 matching the physiological curvature of the human alveolar ridge, achieving a contour fit with the patient's alveolar ridge; through the matching of the biomimetic arc-shaped contour 61 with the physiological curvature of the human alveolar ridge, the mounting base 10 can closely fit the patient's alveolar ridge, dispersing chewing pressure and improving wearing stability and comfort; a silicone bonding layer 62 is bonded to the surface of the biomimetic arc-shaped contour 61 of the positioning slots 6, with the silicone bonding layer 62 facing... A honeycomb-shaped micro-pressure relief groove is formed on the inner surface of the positioning slot 6. The honeycomb-shaped micro-pressure relief groove has a regular hexagonal structure. The silicone bonding layer 62 provides flexible cushioning. The honeycomb-shaped micro-pressure relief groove increases the surface area through the regular hexagonal structure, improves the connection stability with the bionic arc contour 61, and at the same time disperses pressure, reduces local pressure, and enhances wearing comfort. The positioning slot 6 is engaged with the human alveolar ridge to fix the position of the entire modular denture. Specifically, the bionic arc contour 61 on the inner side of the positioning slot 6 is adapted to the physiological curvature of the human alveolar ridge. The silicone bonding layer 62 with regular hexagonal honeycomb-shaped micro-pressure relief grooves is engaged with the patient's alveolar ridge to fix the position of the entire modular denture. Multiple dentures 11 are movably fitted into corresponding mounting cavities 2. Their roots can move vertically within the cavity. The vertical movement of the denture roots within the mounting cavity 2 provides space for height adjustment, allowing the dentures 11 to be independently raised and lowered according to the height of natural teeth in different positions, thus achieving personalized bite fit. The mounting cavity 2 is equipped with a lifting drive mechanism, which can independently drive the corresponding denture 11 to adjust its height. The lifting drive mechanism in each mounting cavity 2 works independently and can adjust the height of dentures 11 in different positions to achieve personalized adjustment of multiple dentures. Specifically, the lifting drive mechanism includes: an adjusting shaft 25 horizontally rotatably disposed inside the mounting base 10, one end of which extends out of the side wall of the mounting base 10 to form an operating end. The adjusting shaft 25 is arranged horizontally, and the operating end extends out of the side wall of the base, facilitating the doctor to use tools to perform rotational operations from the outside, transmitting external rotational power into the device; a driven shaft 13 vertically rotatably disposed inside the mounting cavity 2, the driven shaft 13 being arranged vertically, receiving the power transmitted by the adjusting shaft 25 and converting it into vertical rotational motion, providing rotational drive for the lead screw 9; a bevel gear transmission mechanism connecting the adjusting shaft 25 and the driven shaft 13, which, through the meshing transmission of the bevel gears, converts the horizontal rotational motion of the adjusting shaft 25 into the vertical rotational motion of the driven shaft 13, achieving a 90° change in the transmission direction; and a lead screw 9 coaxially mounted on the top of the driven shaft 13, the top of the driven shaft 13 being fixed. A circular block 22 is fixedly provided, and a threaded insert 21 is fixedly provided on the top of the circular block 22. A threaded slot 20 is longitudinally opened at the bottom of the lead screw 9. The threaded insert 21 is threadedly inserted into the threaded slot 20. A rubber ring 19 is provided at the top of the threaded slot 20. The driven shaft 13 forms a detachable threaded connection with the threaded slot 20 of the lead screw 9 through the circular block 22 and the threaded insert 21, which is convenient for assembly and replacement. The rubber ring 19 provides elastic cushioning at the top of the threaded slot 20 to prevent the threads from loosening. The transmission adjustment structure of this denture can only be adjusted in clinical operation scenarios when the final locking is not done during the first clinical installation, or when the bite height needs to be adjusted after subsequent wear and the doctor has released the locking structure of the adjustment shaft 25. After the adjustment is completed, the transmission path is completely locked by the positioning mechanism and dental resin filling. It is fixed throughout the daily wear, including when eating and chewing, and will not shift. And a threaded slider 16 threaded on the lead screw 9. A vertical groove 8 is longitudinally provided at the center of the bottom of the denture 11. The threaded slider 16 is fixedly installed in the vertical groove 8. When the lead screw 9 rotates, the threaded slider 16 is restricted from rotating because it is fixedly connected to the vertical groove 8. It can only move along the axial direction of the lead screw 9, converting the rotational motion into linear lifting motion, thereby driving the denture 11 to move up and down. The height adjustment method of the combined denture is as follows: When the adjusting shaft 25 rotates, it drives the driven shaft 13 and the lead screw 9 to rotate via the bevel gear transmission mechanism, causing the threaded slider 16 and the denture 11 to rise and fall vertically, thus achieving height adjustment of the denture 11 and forming a complete transmission chain. After rotating the adjusting shaft 25 with an external tool, the adjusting shaft 25 drives the driving bevel gear 15 to rotate synchronously. The driving bevel gear 15 drives the driven bevel gear 14 to rotate through meshing transmission. The driven bevel gear 14 drives the driven shaft 13 to rotate vertically. The driven shaft 13 drives the threaded insert 21 to rotate synchronously. The threaded insert 21, in conjunction with the lead screw 9, drives the lead screw 9 to rotate coaxially. The lead screw 9 drives the threaded slider 16 sleeved on it to rise and fall vertically, ultimately... The height of the denture 11 is adjusted by the threaded slider 16. The operating end of the adjusting shaft 25 is provided with a slot 28 for inserting a tool for rotation, which makes it easy for the doctor to insert and rotate the adjusting shaft 25 with a special tool to achieve the rotation operation. The outer side of the mounting base 10 is provided with a groove 26, and the operating end of the adjusting shaft 25 is located in the groove 26. The groove 26 accommodates the operating end of the adjusting shaft 25, so that the operating end does not protrude outward, making the outer surface of the base flat and avoiding irritation to the oral mucosa. The bevel gear transmission mechanism includes a driving bevel gear 15 fixedly sleeved on the adjusting shaft 25 and a driven bevel gear 14 fixedly sleeved on the driven shaft 13. The meshing of the driving bevel gear 15 and the driven bevel gear 14 converts the horizontal rotation into vertical rotation.

[0025] Please see Figure 2 L-shaped plates 1 are fixedly installed at the four corners of the top of the support plate 3. The base of the denture 11 is limited by the four L-shaped plates 1. The four L-shaped plates 1 form a square limiting frame, which restricts the movement of the base of the denture 11 in the horizontal direction, allowing it to rise and fall vertically but preventing horizontal displacement and rotation, thus ensuring the stability of the rising and falling process. The adjusting shaft 25, the driving bevel gear 15, the driven shaft 13, the driven bevel gear 14, the lead screw 9, and the threaded slider 16 are all made of medical titanium alloy. Medical titanium alloy has excellent biocompatibility, corrosion resistance, and mechanical strength, and can be used for a long time in the moist environment of the oral cavity.

[0026] Please see Figure 2Each L-shaped plate 1 has a telescopic rod 18 on one side. The telescopic rod 18 extends and retracts synchronously with the height of the denture 11 during the adjustment of the denture height, providing auxiliary guidance and support. The telescopic rod 18 is fixedly installed on the top of the support plate 3. The four corners of the bottom of the denture 11 are respectively provided with slots 17. The top of the telescopic rod 18 is locked in the slot 17. Through the cooperation between the telescopic rod 18 and the slot 17, it provides auxiliary guidance and support during the lifting and lowering of the denture 11. The telescopic structure adapts to different height positions, prevents the denture 11 from tilting or shaking, and further enhances the stability of the lifting and lowering. A medical silicone buffer pad 32 with a thickness of 0.8-1.2mm is bonded to the top end face of the telescopic rod 18. The medical silicone buffer pad 32 completely fills the assembly gap between the top of the telescopic rod 18 and the inner wall of the slot 17. The medical silicone buffer pad 32 can fill the assembly gap between the top of the telescopic rod and the inner wall of the slot, eliminating the shaking caused by the gap. At the same time, the medical silicone buffer pad 32 can buffer the impact generated during the chewing of the denture and avoid wear caused by rigid contact between the telescopic rod and the slot.

[0027] Please see Figure 4 The groove 26 is provided with a positioning mechanism 27 for limiting the rotation of the adjusting shaft 25. The positioning mechanism 27 includes a U-shaped block 271. A limiting block 272 is fixedly provided on the inner side of the U-shaped block 271. The limiting block 272 is limited and locked in the slot 28. The inner side of the groove 26 is provided with a limiting groove 29 corresponding to the U-shaped block 271. After the height adjustment is completed by inserting the U-shaped block 271 into the limiting groove 29, the U-shaped block 271 is inserted into the limiting groove 29, so that the limiting block 272 is locked into the slot 28, preventing the adjusting shaft 25 from rotating and locking the height position of the denture 11 to prevent height changes due to vibration or external force during use.

[0028] Please see Figure 4 The mounting base 10 is provided with an adjustment channel 31 that communicates with the mounting cavity 2. The adjustment shaft 25 passes through the adjustment channel 31, which provides a channel for the adjustment shaft 25 to pass through the mounting base 10. The groove 26 is filled with dental resin to help fix the adjustment shaft 25 and make the surface of the groove 26 flat. After the dental resin is filled and cured, it further locks the adjustment shaft 25 from the outside, while filling the surface of the groove 26, eliminating the unevenness, and improving wearing comfort and aesthetics. The gap between the mounting cavity 2 and the denture 11 is filled with a dental light-cured resin sealing layer to prevent liquid from seeping into the interior of the mounting cavity 2. The light-cured resin forms a dense sealing layer at the gap, which isolates saliva, food residue and bacteria in the oral cavity from entering the mounting cavity 2 and protects the internal transmission mechanism from corrosion and contamination.

[0029] Example 2 differs from Example 1 primarily in the design of the auxiliary support structure for the bevel gear transmission. Example 1 achieves transmission reversal solely through single-point meshing between the driving bevel gear 15 fixed on the adjusting shaft 25 and the driven bevel gear 14 on the driven shaft 13. Example 2 additionally includes a crossbar 4 fixed within the mounting cavity 2 on the side furthest from the first bearing 24. At the end of the crossbar 4, a stable bevel gear 7 meshing with the driven bevel gear 14 is rotatably connected via a rotating shaft 5. This forms a three-point transmission structure consisting of a dual-point meshing of the "driving bevel gear 15" and the "stable bevel gear 7," as well as support for the driven bevel gear 14, thereby improving transmission stability.

[0030] Please see Figure 6 A crossbar 4 is fixedly installed on the side of the mounting cavity 2 away from the first bearing 24. The end of the crossbar 4 is rotatably connected to a stabilizing bevel gear 7 via a rotating shaft 5. The stabilizing bevel gear 7 meshes with the driven bevel gear 14. The stabilizing bevel gear 7 plays a stabilizing support role, forming a three-point support structure of driving bevel gear 15 + stabilizing bevel gear 7 + driven bevel gear 14, which improves the stability of the transmission.

[0031] Working principle and usage of this invention: When the height of the denture 11 needs to be adjusted, the operator uses a special tool to insert into the slot 28 at the operating end of the adjusting shaft 25 and rotates it. The adjusting shaft 25 rotates laterally inside the mounting base 10 via the first bearing 24, driving the driving bevel gear 15, which is fixedly sleeved on it, to rotate synchronously. The driving bevel gear 15 meshes with the driven bevel gear 14 on the driven shaft 13, converting the horizontal rotational motion into vertical rotational motion. The driven shaft 13 rotates vertically on the support plate 3 via the second bearing 12. The round block 22 at the top of the driven shaft 13 drives the threaded insert 21 to rotate, and the threaded insert... The rod 21 is threaded into the threaded slot 20 at the bottom of the lead screw 9, driving the lead screw 9 to rotate synchronously. Since the threaded slider 16 is fixedly set in the vertical groove 8 at the bottom of the denture 11, and the base of the denture 11 is limited and constrained by four L-shaped plates 1 and cannot rotate, the threaded slider 16 converts the rotational motion of the lead screw 9 into a linear lifting motion in the vertical direction, thereby driving the denture 11 to rise or fall in the mounting cavity 2, realizing the height adjustment of the denture 11. After the adjustment is completed, the U-shaped block 271 is inserted into the limiting groove 29, so that the limiting block 272 is locked into the slot 28 to lock the adjusting shaft 25, and in the groove 26. Dental resin is used for fixation, and a dental light-cured resin sealing layer is filled in the gap between the mounting cavity 2 and the denture 11 to prevent liquid seepage. During the adjustment of the denture 11 and chewing use, the L-shaped plates 1 at the four corners of the top of the support plate 3 form a limiting and movable locking mechanism on the base of the denture 11 from the horizontal direction, allowing vertical lifting but preventing horizontal displacement and rotation; at the same time, the top of the telescopic rod 18 is locked in the slots 17 at the four corners of the bottom of the denture 11, and extends and retracts with the lifting of the denture 11, providing auxiliary guidance and support to prevent the denture 11 from tilting or shaking, further enhancing the stability of lifting; mounting base 10 The bottom positioning slot 6 matches the physiological curvature of the human alveolar ridge through a biomimetic arc contour 61, achieving a contour fit with the patient's alveolar ridge and dispersing chewing pressure; the silicone bonding layer 62 adheres to the surface of the biomimetic arc contour 61 to provide flexible cushioning, and its surface honeycomb micro-pressure relief groove adopts a regular hexagonal structure to increase the contact surface area, improve connection stability, disperse local pressure, reduce pressure sensation, and enhance wearing comfort; the end of the crossbar 4 is connected to the stable bevel gear 7 and the driven bevel gear 14 through the rotating shaft 5 to form a three-point support structure, improving the stability of the entire transmission mechanism.

[0032] The above description is only used to illustrate the technical solutions of the present invention, and is not intended to limit them. 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 or all of the technical features therein. Any equivalent structural or procedural transformations made using the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A modular denture with adjustable installation height, characterized in that, include: The mounting base (10) has multiple mounting cavities (2) spaced apart at the top and multiple positioning slots (6) correspondingly provided at the bottom; Multiple dentures (11) are movably fitted into corresponding mounting cavities (2), and their roots can move vertically within the cavities; The lifting drive mechanism is embedded in each mounting cavity (2) and is used to independently drive the corresponding denture (11) to adjust its height. The lifting drive mechanism includes: an adjusting shaft (25) that is laterally rotatably disposed inside the mounting base (10), with one end extending out of the side wall of the mounting base (10) to form an operating end; a driven shaft (13) that is vertically rotatably disposed inside the mounting cavity (2); a bevel gear transmission mechanism connecting the adjusting shaft (25) and the driven shaft (13); a lead screw (9) coaxially mounted on the top of the driven shaft (13); and a threaded slider (16) threaded onto the lead screw (9), wherein a vertical groove (8) is longitudinally disposed at the center of the bottom of the denture (11), and the threaded slider (16) is fixedly disposed in the vertical groove (8); When the adjusting shaft (25) rotates, the driven shaft (13) and the lead screw (9) are driven to rotate through the bevel gear transmission mechanism, so that the threaded slider (16) and the denture (11) rise and fall in the vertical direction, thereby realizing the height adjustment of the denture (11).

2. The adjustable-height modular denture according to claim 1, characterized in that: The operating end of the adjusting shaft (25) is provided with a slot (28) for inserting a tool for rotation. The outer side of the mounting base (10) is provided with a groove (26). The operating end of the adjusting shaft (25) is located in the groove (26). The bevel gear transmission mechanism includes a driving bevel gear (15) fixedly sleeved on the adjusting shaft (25) and a driven bevel gear (14) fixedly sleeved on the driven shaft (13). The driven bevel gear (14) meshes with the driving bevel gear (15) for transmission.

3. A modular denture with adjustable installation height according to claim 2, characterized in that: The mounting base (10) is provided with a first bearing groove (23), and a first bearing (24) is fixedly provided in the first bearing groove (23). The adjusting shaft (25) is rotatably provided in the mounting base (10) through the first bearing (24). A support plate (3) is fixedly provided in the mounting cavity (2). A second bearing groove (30) is provided through the top center of the support plate (3). A second bearing (12) is fixedly provided in the second bearing groove (30). The driven shaft (13) is rotatably provided in the mounting cavity (2) through the second bearing (12).

4. A modular denture with adjustable installation height according to claim 3, characterized in that: The top four corners of the support plate (3) are respectively fixed with L-shaped plates (1), and the base of the denture (11) is provided between the four L-shaped plates (1). The adjusting shaft (25), the driving bevel gear (15), the driven shaft (13), the driven bevel gear (14), the lead screw (9) and the threaded slider (16) are all made of medical titanium alloy.

5. A modular denture with adjustable installation height according to claim 1, characterized in that: The inner surface of the positioning slot (6) forms a biomimetic arc contour (61). The radius of curvature of the biomimetic arc contour (61) matches the physiological curvature of the human alveolar ridge, thus achieving a contour adaptation with the patient's alveolar ridge. A silicone bonding layer (62) is bonded to the surface of the biomimetic arc contour (61) of the positioning slot (6). The surface of the silicone bonding layer (62) facing the inner side of the positioning slot (6) is processed to form a honeycomb-shaped micro-pressure relief groove. The honeycomb-shaped micro-pressure relief groove has a regular hexagonal structure.

6. A modular denture with adjustable installation height according to claim 4, characterized in that: Each of the L-shaped plates (1) is provided with a telescopic rod (18) on one side. The telescopic rod (18) is fixedly installed on the top of the support plate (3). The four corners of the bottom of the denture (11) are provided with slots (17). The top of the telescopic rod (18) is inserted into the slot (17). A medical silicone cushioning pad (32) with a thickness of 0.8-1.2mm is bonded to the top end face of the telescopic rod (18). The medical silicone cushioning pad (32) completely fills the assembly gap between the top of the telescopic rod (18) and the inner wall of the slot (17).

7. A modular denture with adjustable installation height according to claim 2, characterized in that: The groove (26) is provided with a positioning mechanism (27) for limiting the rotation of the adjusting shaft (25). The positioning mechanism (27) includes a U-shaped block (271). A limiting block (272) is fixedly provided on the inner side of the U-shaped block (271). The limiting block (272) is limited and locked in the slot (28). A limiting groove (29) is provided on the inner side of the groove (26) corresponding to the U-shaped block (271). The U-shaped block (271) is inserted and installed in the limiting groove (29).

8. A modular denture with adjustable installation height according to claim 1, characterized in that: A round block (22) is fixedly installed on the top of the driven shaft (13), and a threaded insert rod (21) is fixedly installed on the top of the round block (22). A threaded slot (20) is longitudinally opened at the bottom of the lead screw (9). The threaded insert rod (21) is threadedly inserted into the threaded slot (20), and a rubber ring (19) is provided at the top of the threaded slot (20).

9. A modular denture with adjustable installation height according to claim 2, characterized in that: The mounting base (10) is provided with an adjustment channel (31) that communicates with the mounting cavity (2). The adjustment shaft (25) passes through the adjustment channel (31). The groove (26) is filled with dental resin to help fix the adjustment shaft (25) and make the surface of the groove (26) flat. The gap between the mounting cavity (2) and the denture (11) is filled with a dental light-cured resin sealing layer to prevent liquid from seeping into the interior of the mounting cavity (2).

10. A modular denture with adjustable installation height according to claim 1, characterized in that: A crossbar (4) is fixedly installed on the side of the mounting cavity (2) away from the first bearing (24). The end of the crossbar (4) is rotatably connected to a stabilizing bevel gear (7) via a rotating shaft (5). The stabilizing bevel gear (7) meshes with the driven bevel gear (14).

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