3D-printed dental implant bridge

Abstract

The application discloses a 3D-printed implant tooth repair bridge and belongs to the technical field of medical devices. The 3D-printed implant tooth repair bridge comprises an integrally-formed bridge and a plurality of implants, and further comprises a printing device for 3D printing the bridge, wherein the printing device comprises a printing table and a mounting base, the mounting base is arranged on the printing table, a bridge base is arranged on the mounting base through a central connecting piece, a plurality of connecting heads for clamping the implants are detachably connected in the bridge base, wherein the connecting heads are contracted in the bridge base through a contraction structure and are fixedly installed through a limiting piece. The 3D-printed implant tooth repair bridge is designed in a detachable manner, so that each connecting head is an independent replaceable component. Therefore, no matter which connecting head has precision loss, the corresponding connecting head can be replaced for maintenance, and the scrapping of the whole bridge base caused by the damage of a single connecting head is avoided.

Description

Technical Field

[0001] This invention relates to a 3D-printed dental implant restoration framework, belonging to the field of medical device technology. Background Technology

[0002] Dental implants involve inserting an artificial tooth root into the alveolar bone, and then attaching a porcelain crown on top of the artificial root. This method of restoration provides the same functionality and aesthetics as natural teeth. In the fabrication of dental implant bridges, the metal bridges used for implants are made by directly machining dental titanium alloy discs on a computer numerical control machine tool. The implant bridges also need to be thoroughly polished before they can be used.

[0003] In existing technologies, 3D printing is often used to process dental bridges. However, 3D printing technology cannot meet the precision requirements of the connection between the dental bridge and the teeth. Therefore, the printed dental bridge needs to be further polished. In order to ensure that the precision meets the requirements, the entire dental bridge must be polished. This greatly increases the overall processing time of the dental bridge. At the same time, the connector of the dental abutment used for 3D printing cannot be disassembled and replaced after it is connected to the dental abutment. When the connector loses precision, it cannot be replaced. If the precision of one connector is lost, the entire dental abutment will be scrapped, resulting in high usage costs.

[0004] Therefore, a new solution is needed to address this problem. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a 3D printed dental implant restoration bridge, which solves the problem in the prior art that the connector on the dental abutment cannot be replaced after the precision is lost, which will lead to the scrapping of the entire dental abutment and the slow overall processing.

[0006] The technical problem to be solved by the present invention is achieved by the following technical solution: a 3D printed dental implant restoration framework, comprising an integrally formed dental framework and a plurality of implants, and further comprising a printing device for 3D printing the dental implant restoration framework, the printing device comprising a printing table;

[0007] Mounting base, placed on the printing platform;

[0008] A dental bridge base is mounted on a mounting base via a central connector. Several connectors for snapping onto the dental bridge are detachably connected to the dental bridge base via limiting members.

[0009] When the connector needs to be replaced, remove the limiting piece and take the connector out of the dental bridge base.

[0010] By adopting the above technical solution, the entire dental bridge can be processed in one step. The processed dental bridge only needs to be precision ground at the connection points, without the need for comprehensive grinding of the entire dental bridge. This greatly improves the processing efficiency of the dental bridge and reduces the risk of rework. Furthermore, each connector is an independent and replaceable component. Therefore, if any connector suffers a loss of precision, it can be repaired by replacing the corresponding connector, avoiding the scrapping of the entire dental bridge base due to the damage of a single connector.

[0011] The invention is further configured such that: the dental bridge base includes a semi-circular disk for mounting the connector; the semi-circular disk is provided with an upper disk for preventing damage to the connector; the semi-circular disk and the upper disk are slidably connected; cylindrical slots are provided at both ends of the semi-circular disk; and magnetic cylindrical pins are provided on the upper disk. When the upper disk rotates, the magnetic cylindrical pins can engage with the cylindrical slots to ensure that the upper disk rotates to a predetermined position.

[0012] By adopting the above technical solution, the end of the connector with precision requirements can be sealed in the dental bridge base when printing is not performed, thus preventing external factors from damaging the connector.

[0013] The present invention is further configured such that: the central connector includes a central rotating shaft, the central rotating shaft is connected to the mounting base, a central gear is sleeved on the central rotating shaft, a connecting cavity is provided above the central gear, a drive motor is provided in the connecting cavity, and the drive motor is connected to the central rotating shaft.

[0014] By adopting the above technical solution, the rotation of the central shaft drives the outer ring gear to rotate, thereby driving the connector to rotate. This ensures that the connector is in a rotating state during 3D printing, preventing the printed dental bridge from sticking to the connector and ensuring that the printed dental bridge can be smoothly detached from the connector.

[0015] The present invention is further configured such that: the dental bridge base is provided with a mounting hole, the connector is disposed in the mounting hole, and the limiting member is a mounting end cap disposed at the position of the mounting hole.

[0016] By adopting the above technical solution, the connector can be stably confined within the mounting hole and rotate stably under the drive of the central gear.

[0017] The present invention is further configured such that: the central gear and the outer ring gear mesh with each other, the outer ring gear is located directly below the mounting hole, and the lower end of the connector passes through the center of the outer ring gear.

[0018] By adopting the above technical solution, through the meshing of the central gear and the outer ring gear, the entire rotary power device only needs one power source to realize the rotational movement of all connectors, reducing the use of power sources and lowering manufacturing costs.

[0019] The present invention is further configured such that: the connector includes an upper connecting end and a lower pushing end, a limit block is provided between the upper connecting end and the lower pushing end, the retraction structure is a retraction spring, the retraction spring is sleeved on the upper connecting end, when the dental bridge base is not yet installed on the mounting base, the upper connecting end retracts into the dental bridge base, and the lower pushing end extends out of the dental bridge base; when the dental bridge base is installed on the mounting base, the upper connecting end extends out of the dental bridge base, and the lower pushing end retracts into the dental bridge base.

[0020] By adopting the above technical solution, space is significantly saved. When the equipment is not installed or disassembled, this design makes the entire system more compact, facilitating storage and transportation. The limiting block between the upper connecting end and the lower pushing end prevents the connector from over-expanding under the spring's push, thus avoiding potential damage to other components. This design enhances the system's safety and reliability. The buffering effect of the contracting spring reduces vibration and noise generated during operation to a certain extent. This is very helpful in improving equipment stability and extending its service life. When maintenance and replacement of the connector are required, its retractability makes it easier to remove and install from the mounting holes. This greatly simplifies the maintenance process and reduces maintenance costs.

[0021] The invention is further configured such that during the process of installing the dental bridge base onto the mounting base, the connector is pushed and the upper connector extends out of the mounting hole. At this time, the lower end of the connector is engaged with the outer ring gear through a flat key.

[0022] By adopting the above technical solution, the precise positioning of the connector on the gear can be ensured, thereby guaranteeing the accuracy of the entire transmission system. The flat key design makes the connection between the connector and the outer ring gear more secure, preventing slippage or loosening during transmission and thus improving system stability. Because the flat key provides additional contact surface, it can more effectively transmit torque to the connector when the gear rotates, thereby improving the efficiency of the entire transmission system. A stable connection reduces noise and vibration generated during transmission, which is very helpful in improving the smoothness of equipment operation and extending its service life.

[0023] The present invention is further configured such that: the printing table includes a fixed base and a printing assembly, and the mounting base is disposed on the fixed base.

[0024] By adopting the above technical solution, the fixed base provides a solid foundation for the entire print station, ensuring its stability during operation. The mounting base, situated on the fixed base, further enhances the stability and reliability of the printing components, reducing movement or offset caused by vibration or external forces. Directly mounting the mounting base on the fixed base simplifies and speeds up the installation of the printing components. No complex positioning or calibration steps are required, allowing for easy installation. The clear boundary between the mounting base and the fixed base facilitates easier disassembly and reinstallation when maintenance or replacement of the printing components is needed. This reduces maintenance costs and improves equipment maintainability. The design of the fixed base and mounting base can accommodate different types of printing components and printing needs. By replacing mounting bases of different specifications or functions, the functionality and performance of the print station can be easily expanded to meet diverse printing requirements.

[0025] The present invention is further configured such that: the printing component includes a horizontal moving rod, a vertical moving block, a lead screw, and a driving power supply; both ends of the horizontal moving rod are connected to the vertical moving block; the vertical moving block is connected to the lead screw; and the lead screw is connected to the driving power supply.

[0026] By employing the above technical solution, the lead screw drives the longitudinal moving block to move up and down, ensuring precise position control of the printing component in the vertical direction. Simultaneously, the combination of the lateral moving rod and the longitudinal moving block allows the print head (or other printing elements) to move precisely in a two-dimensional plane, thus achieving high-precision printing. Lead screw driving is a mature and stable driving method that provides smooth and stable movement, reducing printing errors caused by vibration or impact. Furthermore, the drive power supply provides power to the lead screw, ensuring its continuous and stable operation. By controlling the output of the drive power supply, the moving speed and position of the printing component can be easily adjusted. This control method makes the printing process more flexible and controllable, allowing adjustments based on different printing needs. Due to the modular design of the lead screw drive system, more drive modules can be added as needed to expand the functionality of the printing component. For example, multiple lead screw drive systems can be added to achieve more complex 3D printing operations.

[0027] The invention is further configured such that a printing head is provided at the bottom of the horizontal moving rod.

[0028] By adopting the above technical solution, the printhead is directly positioned at the bottom of the horizontal moving rod, allowing it to directly contact the printing material for precise printing. This design simplifies the transmission mechanism in the printing process, improving printing efficiency and accuracy. Since the printhead is directly connected to the horizontal moving rod, errors that may be caused by intermediate steps are reduced, resulting in more accurate printing. It also reduces vibration and deviation caused by complex transmission mechanisms. The direct connection between the printhead and the horizontal moving rod means that the printhead can quickly and accurately follow the movement of the moving rod, improving printing response speed and flexibility. The printhead being mounted as an independent component at the bottom of the horizontal moving rod simplifies maintenance or replacement. No disassembly of the entire printing assembly is required; only the printhead needs to be addressed, reducing maintenance costs and time. Mounting the printhead as a module on the horizontal moving rod facilitates the replacement of different types of printheads according to different printing needs. This modular design improves the compatibility and scalability of the equipment.

[0029] The beneficial effects of this invention are: under the premise of ensuring that the dental bridge can be processed as a whole, only the connection points of the dental bridge need to be precision ground, and the entire dental bridge does not need to be ground, which improves the production efficiency of the dental bridge. At the same time, the setting of multiple individual connectors makes the maintenance of the base used to support the printing of the dental bridge more convenient. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of the printing process in this invention;

[0031] Figure 2 This is a three-dimensional structural diagram of the printing station in this invention;

[0032] Figure 3 This is a three-dimensional structural diagram of the connector and dental bridge base assembly in this invention.

[0033] Figure 4 This is an exploded structural diagram of the connector, connector head, and dental bridge base in this invention;

[0034] Figure 5 This is a schematic diagram of the three-dimensional structure of the connector in this invention;

[0035] Figure 6 This is a schematic diagram of the three-dimensional structure of the dental bridge in this invention.

[0036] In the diagram: 1. Printing platform; 2. Mounting base; 3. Central connector; 4. Tooth bridge base; 5. Connector; 6. Outer ring gear; 7. Printing assembly; 8. Tooth bridge; 101. Fixed base; 201. Circular groove; 301. Central rotating shaft; 302. Central gear; 303. Connecting cavity; 401. Upper disc; 402. Mounting hole; 403. Magnetic cylindrical pin; 404. Semi-disc; 405. Cylindrical slot; 501. Upper connecting end; 502. Lower pushing end; 503. Limiting block; 504. Retraction spring; 701. Lateral moving rod; 702. Longitudinal moving block; 703. Lead screw; 704. Drive power supply; 705. Print head. Detailed Implementation

[0037] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this invention, the invention will be further described below in conjunction with specific illustrations.

[0038] like Figure 1 and Figure 2 As shown, a 3D-printed dental implant restoration bridge includes a one-piece dental bridge 8 and several implants 9, and also includes a printing device for 3D printing the dental implant restoration bridge. The printing device includes a printing table 1; a mounting base 2 disposed on the printing table 1; and a dental bridge base 4 disposed on the mounting base 2 via a central connector 3. The printing table 1 is a common 3D printer in the prior art, and the printing table 1 is equipped with all the accessories required for the 3D printer. The central connector 3 is connected to the dental bridge base 4, and the two are connected as a whole. When printing is not in progress, the central connector 3 and the dental bridge base 4 remain connected, and the two can be connected by bolts to achieve fastening and limiting.

[0039] The dental bridge base 4 has several detachable connectors 5 for snapping onto the dental bridge frame;

[0040] During the process of inserting the connector 5 into the dental bridge base 4, a limiting member is fitted onto the connector 5 and connected to the dental bridge base 4. When the connector 5 needs to be replaced, the limiting member is removed and the connector 5 is taken out of the dental bridge base 4.

[0041] The upper semicircular area of ​​the dental bridge base 4 is provided with several mounting holes 402. The number of mounting holes 402 is the same as the number of teeth on the dental bridge 8 to be printed. The specific number depends on the patient's actual situation.

[0042] A connector 5 is provided in the mounting hole 402. After the central connector 3 is connected to the mounting base 2, the lower end of the connector 5 engages with the circular groove 201 on the mounting base 2. When the lower push end 502 of the connector 5 engages in the circular groove 201, pressing down inserts the central rotating shaft 301 into the mounting base 2. The connection between the central rotating shaft 301 and the mounting base 2 achieves fixation. During insertion, the upper connecting end 501 of the connector 5 is pushed out of the mounting hole 402. After printing is completed, when the central connector 3 and the dental bridge base 4 are removed, the upper connecting end 501 of the connector 5 retracts back into the mounting hole 402 under the action of the retraction spring 504. This design prevents the connector 5 from colliding and causing accuracy deviations. Furthermore, each connector 5 is an independent and replaceable component. Therefore, if any connector 5 suffers accuracy loss, it can be repaired by replacing the corresponding connector 5, avoiding the scrapping of the entire dental bridge base due to the damage of a single connector 5.

[0043] The upper end of connector 5 is pushed out of mounting hole 402, at which point the end of connector 5 is connected to tooth bridge 8;

[0044] The dental bridge 8 is an integral structure that is processed in one step by the printing table 1. It can realize the one-step processing of the entire dental bridge 8. After the dental bridge 8 is processed, only the connection points need to be precision ground. There is no need to grind the entire dental bridge 8, which greatly improves the processing efficiency of the dental bridge 8 and reduces the risk of rework.

[0045] The central connector 3 includes a central rotating shaft 301, which is connected to the mounting base 2 for fixing and limiting. The connection between the central rotating shaft 301 and the mounting base 2 can be achieved by a retractable snap-fit ​​method. A central hole is provided in the center of the mounting base 2, and the snap-fit ​​limiting of the central rotating shaft 301 is achieved by controlling the retraction of the central hole.

[0046] like Figure 3 As shown, the printing table 1 includes a fixed base 101 and a printing component 7;

[0047] Mounting base 2 is mounted on fixed base 101.

[0048] The printing assembly 7 includes two lead screws 703 located on the top of the left and right sides of the fixed base 101. Each lead screw 703 is threaded with a longitudinal moving block 702. A transverse moving rod 701 is provided between the two longitudinal moving blocks 702. A drive power supply 704 is provided at the end of the lead screw 703. The drive power supply 704 drives the lead screw to rotate in the longitudinal moving block 702, thereby driving the longitudinal moving block 702 to move.

[0049] The lead screw 703 drives the longitudinal moving block 702, ensuring precise position control of the printing assembly 7 in the vertical direction. Simultaneously, the combination of the transverse moving rod 701 and the longitudinal moving block 702 enables the print head 705 to move precisely in the two-dimensional plane, achieving high-precision printing. The lead screw 703 drive is a mature and stable driving method, providing smooth and stable movement and reducing printing errors caused by vibration or impact. Furthermore, the drive power supply 704 provides power to the lead screw 703, ensuring its continuous and stable operation. By controlling the output of the drive power supply 704, the movement speed and position of the printing assembly 7 can be easily adjusted. This control method makes the printing process more flexible and controllable, allowing adjustments based on different printing needs. Due to the modular design of the lead screw 703 drive system, more drive modules can be added as needed to expand the functionality of the printing assembly 7. For example, multiple lead screw 703 drive systems can be added to achieve more complex 3D printing jobs.

[0050] A print head 705 is located at the bottom of the horizontal moving rod 701.

[0051] By directly mounting the printhead 705 at the bottom of the horizontal moving rod 701, the printhead 705 can directly contact the printing material, enabling precise printing. This design simplifies the transmission mechanism in the printing process, improving printing efficiency and accuracy. Since the printhead 705 is directly connected to the horizontal moving rod 701, errors that may be caused by intermediate links are reduced, resulting in more accurate printing. It also reduces vibration and deviation caused by complex transmission mechanisms. The direct connection between the printhead 705 and the horizontal moving rod 701 means that when the moving rod moves, the printhead 705 can quickly and accurately follow the movement, improving printing response speed and flexibility. The printhead 705 is mounted as an independent component at the bottom of the horizontal moving rod 701, making maintenance or replacement of the printhead 705 easier. It eliminates the need to disassemble the entire printing assembly 7; only the printhead 705 needs to be operated, reducing maintenance costs and time. Mounting the printhead 705 as a module on the horizontal moving rod 701 facilitates the replacement of different types of printheads 705 according to different printing needs. This modular design improves the compatibility and scalability of the equipment.

[0052] Print station 1 can also be equipped with a protective housing. The protective housing provides additional safety protection for print station 1. It prevents users from accidentally coming into contact with high-temperature components, moving parts, or sharp edges during printing, thus reducing potential safety hazards. The protective housing prevents external dust, dirt, and other impurities from entering the interior of print station 1, keeping the printing components 7 clean. This helps extend the lifespan of the print head 705 and other critical components, while improving print quality. The protective housing can also reduce noise and vibration generated during printing to some extent. This is very helpful in creating a more comfortable and quieter working environment, especially for users who need to work for extended periods. The protective housing can be designed aesthetically pleasing and coordinated with the overall appearance of print station 1. This not only enhances the overall image of the equipment but also improves the user experience.

[0053] like Figure 3 As shown, a central gear 302 is sleeved on the central rotating shaft 301, and a connecting cavity 303 is provided above the central gear 302. A drive motor is provided in the connecting cavity 303 and is connected to the central rotating shaft 301. The central gear 302 meshes with the outer ring gear 6. The central gear 302 can drive the outer ring gear 6 to rotate, thereby controlling the rotation of the connector head 5. During printing, keeping the connector head 5 rotate can prevent the printed dental bridge 8 from sticking to the end of the connector head 5, and can ensure that the dental bridge 8 and the connector head 5 are properly separated.

[0054] After connector 5 is ejected, the lower end of connector 5 is engaged with the outer ring gear 6 via a flat key.

[0055] like Figure 4 As shown, the outer ring gear 6 is located directly below the mounting hole 402 and is connected to the bottom surface of the tooth bridge base 4. The lower end of the connector 5 passes through the center of the outer ring gear 6.

[0056] The central connector 3 includes a central rotating shaft 301, which is connected to a connecting hole 401 located in the center of the mounting base 2 to achieve fixation and positioning. A central gear 302 is sleeved on the central rotating shaft 301, and a connecting cavity 303 is provided above the central gear 302. A drive motor is provided in the connecting cavity 303 and is connected to the central rotating shaft 301.

[0057] The dental bridge base 4 includes a semi-circular disk 404 for mounting the connector 5. An upper disk 401 is provided on the semi-circular disk 404 to prevent damage to the connector 5. The semi-circular disk 404 and the upper disk 401 are slidably connected. Cylindrical slots 405 are provided at both ends of the semi-circular disk 404. A magnetic cylindrical pin 403 is provided on the upper disk 401. When the upper disk 401 rotates, the magnetic cylindrical pin 403 can be engaged with the cylindrical slot 405 to ensure that the upper disk 401 rotates to the predetermined position.

[0058] like Figure 5 As shown, the connector 5 includes an upper connecting end 501 and a lower pushing end 502. A limit block 503 is provided between the upper connecting end 501 and the lower pushing end 502. A retraction spring 504 is sleeved on the upper connecting end 501. When the dental bridge base 4 is not yet installed on the mounting base 2, the upper connecting end 501 is retracted inside the dental bridge base 4, and the lower pushing end 502 extends out of the dental bridge base 4. When the dental bridge base 4 is installed on the mounting base 2, the upper connecting end 501 extends out of the dental bridge base 4, and the lower pushing end 502 is retracted in the dental bridge base 4.

[0059] When the equipment is not installed or disassembled, this design makes the entire system more compact, facilitating storage and transportation. The limiting block 503 located between the upper connecting end 501 and the lower pushing end 502 prevents the connector 5 from over-expanding under the spring's push, thus avoiding potential damage to other components. This design enhances the system's safety and reliability. The buffering effect of the contraction spring 504 reduces vibration and noise generated during operation to a certain extent. This is very helpful in improving equipment stability and extending its service life. When maintenance and replacement of the connector 5 are required, its retractability makes it easier to remove and install from the mounting hole 402. This greatly simplifies the maintenance process and reduces maintenance costs.

[0060] The key ensures precise positioning of connector 5 on the gear, guaranteeing the accuracy of the entire transmission system. The flat key design makes the connection between connector 5 and the outer ring gear 6 more secure, preventing slippage or loosening during transmission and improving system stability. Because the flat key provides additional contact surface, it can more effectively transmit torque to connector 5 when the gear rotates, thus improving the efficiency of the entire transmission system. A stable connection reduces noise and vibration during transmission, which is very helpful in improving the smoothness of equipment operation and extending its service life.

[0061] The fixed base 101 provides a solid foundation for the entire print station 1, ensuring its stability during operation. The mounting base 2, positioned on the fixed base 101, further enhances the stability and reliability of the printing assembly 7, reducing movement or displacement caused by vibration or external forces. Directly mounting the mounting base 2 onto the fixed base 101 simplifies and speeds up the installation of the printing assembly 7. No complex positioning or calibration steps are required, allowing for easy installation. The clear separation between the mounting base 2 and the fixed base 101 facilitates easier disassembly and reinstallation when maintenance or replacement of the printing assembly 7 is needed. This reduces maintenance costs and improves the maintainability of the equipment. The design of the fixed base 101 and the mounting base 2 can accommodate different types of printing assemblies 7 and printing needs. By replacing the mounting base 2 with different specifications or functions, the functionality and performance of the print station 1 can be easily expanded to meet diverse printing requirements.

[0062] Working principle: Before printing, the central connector 3 is first connected to the dental bridge base 4 through the connecting component, and then connected to the connecting hole 401 on the mounting base 2 through the central rotating shaft 301. Before connection, the upper disk 401 is rotated so that the mounting hole 402 on the upper disk 401 corresponds to the mounting hole 402 on the semi-disc 404. During the downward insertion of the connecting hole 401, the connector 5 in the mounting hole 402 is pushed out. After the connector 5 is pushed out, the lower connecting end is engaged with the outer ring gear 6 through the key. At this time, the printing component 7 is controlled to operate. During the printing process, the central rotating shaft 301 is rotated by the motor to drive the central gear 302 to rotate, so that the connector 5 can maintain a constant rotation speed during the printing of the dental bridge 8, avoiding the dental bridge 8 and the connector 5 from sticking together. Furthermore, if the connector 5 in the mounting hole 402 has insufficient precision, it can be replaced for repair, greatly reducing maintenance costs.

[0063] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of the invention, all of which fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A 3D-printed dental implant restoration framework, characterized in that: It includes an integrally molded dental bridge (8) and several implants, and also includes a printing device for 3D printing dental implant restoration bridge, the printing device including a printing table (1). Mounting base (2) is set on printing table (1); The dental bridge base (4) is mounted on the mounting base (2) via a central connector (3). The dental bridge base (4) is detachably connected to several connectors (5) for snapping onto the dental bridge frame (8) via limiting members. When the connector (5) needs to be replaced, remove the limiting piece and take the connector (5) out of the dental bridge base (4); The central connector (3) includes a central rotating shaft (301), which is connected to the mounting base (2). A central gear (302) is sleeved on the central rotating shaft (301), and a connecting cavity (303) is provided above the central gear (302). A drive motor is provided in the connecting cavity (303), and the drive motor is connected to the central rotating shaft (301). The dental bridge base (4) is provided with a mounting hole (402), the connector (5) is provided in the mounting hole (402), and the limiting member is a mounting end cap (9) provided at the mounting hole (402). The central gear (302) meshes with the outer ring gear (6), the outer ring gear (6) is located directly below the mounting hole (402), and the lower end of the connector (5) passes through the center of the outer ring gear (6); The connector (5) includes an upper connecting end (501) and a lower pushing end (502). A limit block (503) is provided between the upper connecting end (501) and the lower pushing end (502). A retraction spring (504) is sleeved on the upper connecting end (501). When the dental bridge base (4) is not yet installed on the mounting base (2), the upper connecting end (501) is retracted inside the dental bridge base (4), and the lower pushing end (502) extends out of the dental bridge base (4). When the dental bridge base (4) is installed on the mounting base (2), the upper connecting end (501) extends out of the dental bridge base (4), and the lower pushing end (502) is retracted in the dental bridge base (4). During the process of installing the dental bridge base (4) onto the mounting base (2), the connector (5) is pushed and the upper connecting end (501) extends out of the mounting hole (402). At this time, the lower end of the connector (5) is engaged with the outer ring gear (6) through a flat key.

2. The 3D-printed dental implant restoration framework according to claim 1, characterized in that: The dental bridge base (4) includes a semi-circular disk (404) for mounting the connector (5). An upper disk (401) is provided on the semi-circular disk (404). The upper disk (401) can be rotated to change the overlapping area with the semi-circular disk (404) to enclose the connector (5) inside the dental bridge base (4). The semi-circular disk (404) and the upper disk (401) are slidably connected. The semi-circular disk (404) has cylindrical slots (405) at both ends of the cross section, and the upper disk (401) has magnetic cylindrical pins (403). When the upper disk (401) rotates, the magnetic cylindrical pin (403) can engage with the cylindrical slot (405) to ensure that the upper disk (401) rotates to the predetermined position.

3. The 3D-printed dental implant restoration framework according to claim 1, characterized in that: The printing table (1) includes a fixed base (101) and a printing component (7), and the mounting base (2) is disposed on the fixed base (101).

4. The 3D-printed dental implant restoration framework according to claim 3, characterized in that: The printing assembly (7) includes a horizontal moving rod (701), a vertical moving block (702), a lead screw (703), and a driving power supply (704). The two ends of the horizontal moving rod (701) are connected to the vertical moving block (702), the vertical moving block (702) is connected to the lead screw (703), and the lead screw (703) is connected to the driving power supply (704).

5. The 3D-printed dental implant restoration framework according to claim 4, characterized in that: A print head (705) is provided at the bottom of the horizontal moving rod (701).

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