Artificial tooth root structure

Abstract

The invention relates to the technical field of artificial tooth roots, and particularly discloses an artificial tooth root structure which comprises an implant, a supporting part arranged in the implant and a dental crown abutment, the supporting part comprises a supporting seat, a supporting unit arranged on the supporting seat and a limiting piece contained in the supporting unit, a first through hole is formed in the supporting unit, a second through hole communicated with the first through hole is formed in the implant, the limiting piece is contained in the supporting unit, and the free end of the limiting piece protrudes out of the supporting unit; the dental crown abutment is contained in the supporting unit and abuts against the limiting piece, and when the dental crown abutment is locked in the supporting unit and tightly presses the limiting piece, the free end of the limiting piece protrudes out of the implant through the first through hole and the second through hole and abuts against the external alveolar bone to achieve fixation. The fixing strength of the artificial tooth root and the alveolar bone is effectively improved, the problem that the initial stability of a traditional implant is insufficient is solved, and meanwhile the structural design is reasonable and assembling is convenient.

Description

Technical Field

[0001] This invention relates to the field of artificial tooth root technology, and in particular discloses an artificial tooth root structure. Background Technology

[0002] Traditional dental implants primarily rely on external threads to achieve osseointegration and fixation with the alveolar bone. In patients with poor alveolar bone conditions or osteoporosis, relying solely on threaded occlusion can lead to insufficient initial stability and limited fixation strength. Furthermore, the internal structure of existing implants is mostly a simple, one-piece design, lacking a structure that synchronously drives external radial locking through internal locking after implantation. This makes it difficult to further enhance the abutment and fixation effect with the alveolar bone after implantation. At the same time, the related support, limiting, and transmission structures suffer from defects such as poor assembly and positioning accuracy, stress concentration leading to easy wear, and insufficient guidance during the locking process. These shortcomings significantly limit the overall reliability, lifespan, and clinical applicability of the artificial tooth root. Summary of the Invention

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this invention is to provide an artificial tooth root structure.

[0004] To achieve the above objectives, the present invention provides an artificial tooth root structure, comprising an implant, a support portion disposed within the implant, and a crown abutment; the support portion includes a support base, a support unit disposed on the support base, and a limiting member accommodated within the support unit; the support unit has a first through hole, the implant has a second through hole communicating with the first through hole, the limiting member is accommodated within the support unit and its free end protrudes out of the support unit; the crown abutment is accommodated within the support unit and abuts against the limiting member; when the crown abutment is locked within the support unit and the limiting member is pressed, the free end of the limiting member protrudes out of the implant through the first and second through holes and abuts against the external alveolar bone for fixation.

[0005] This artificial tooth root structure uses a crown abutment to lock and press a limiting member. The free end of the limiting member protrudes from the implant through the first and second through holes and abuts against the alveolar bone. Combined with the synergistic action of the supporting components, this effectively enhances the fixation strength between the artificial tooth root and the alveolar bone, solving the problem of insufficient initial stability in traditional implants. Furthermore, its reasonable structural design facilitates assembly and adaptability to different alveolar bone conditions, improving clinical applicability. Specific implementation: After assembling the support base, support unit, and limiting member of the supporting component, place them within the implant's receiving cavity. The crown abutment is housed within the support unit and abuts against the limiting member. Locking the crown abutment presses it downwards against the limiting member. The free end of the limiting member protrudes from the implant through the first through hole of the support unit and the second through hole of the implant, abutting against the external alveolar bone to achieve double fixation, thus completing the assembly and fixation of the artificial tooth root.

[0006] The free end of the limiting member is provided with a spike, which is V-shaped.

[0007] This artificial tooth root structure features a V-shaped spike at the free end of the retainer. When the crown abutment is tightened, the V-shaped spike protrudes through the first through-hole of the support unit and the second through-hole of the implant, allowing it to precisely penetrate the external alveolar bone. This significantly enhances the occlusal force and contact stability between the retainer and the alveolar bone, effectively solving the problems of traditional implants relying solely on thread fixation, insufficient initial stability, and easy loosening. Simultaneously, the V-shaped structure design disperses stress during insertion, preventing alveolar bone damage and making it suitable for osteoporotic bone environments. The clinical applicability and lifespan of artificial tooth roots are improved. Specific implementation method: A limiting member equipped with a V-shaped spike is housed in the support unit. After the support unit is assembled as a whole, it is placed in the implant receiving chamber. The crown abutment is housed and locked in the cylindrical part of the support unit. During the locking process, the crown abutment presses down on the limiting member, driving the V-shaped spike at the free end of the limiting member to pass through the first through hole and the second through hole in sequence and protrude out of the implant. The V-shaped spike penetrates the external alveolar bone and is fixed with the outer wall of the implant to form a double limiting, thus completing the stable assembly of the artificial tooth root.

[0008] The implant includes a main body, a receiving part formed on the main body, a receiving chamber provided on the receiving part, and a support part located in the receiving chamber.

[0009] The support includes a cylindrical part disposed on a support base and multiple sets of connecting plates disposed on the side of the cylindrical part. The end of the connecting plate away from the cylindrical part is connected to the inner wall of the receiving part. The cylindrical part is provided with an internal thread, and the crown support is provided with an external thread. The crown support is screwed to the internal thread of the cylindrical part via the external thread.

[0010] This artificial tooth root structure features a receiving section and cavity within the main implant body. The support section and implant are integrally molded, with the support base, cylindrical section, and multiple connecting plates of the support section being integrally machined with the main implant body and receiving section. This eliminates the need for separate assembly of the support section and implant, significantly improving the connection strength and structural integrity, effectively distributing stress, and preventing loosening or deformation at the connection point. Furthermore, the cylindrical section has internal threads, and the crown abutment has external threads, enabling a detachable and stable connection between the crown abutment and support section via threaded connection. This facilitates convenient assembly and reliable locking, precisely transmitting locking force to compress the limiting component, thereby ensuring the connection between the limiting component and the alveolar bone. The bone abutment and fixation effect, the overall structural design is reasonable, and the overall stability, assembly efficiency and service life of the artificial tooth root are improved. Specific implementation method: The main body of the implant, the receiving part and the support part (including the support seat, the cylindrical part and multiple sets of connecting plates) are integrally formed, so that the end of the multiple sets of connecting plates away from the cylindrical part is naturally and integrally connected with the inner wall of the receiving part, without the need to assemble the support part and the implant separately. Then, the crown abutment is screwed to the internal thread of the cylindrical part through its external thread. When the crown abutment is tightened, it transmits the locking force downward, pressing the limiting member housed in the support unit, driving the limiting member to protrude through the through hole and abut against the alveolar bone, thus completing the overall assembly and fixation of the artificial tooth root.

[0011] The first through hole is provided in four sets, and the second through hole is provided in four sets. The four sets of first through holes are evenly distributed around the periphery of the support unit, and the four sets of second through holes are opened at the positions corresponding to the support base and the four sets of first through holes. There are two sets of limiting members. The two sets of limiting members are arranged symmetrically in the support unit, and the free end of each set of limiting members is adapted to the two sets of first through holes and the two sets of second through holes.

[0012] The crown support has a first groove at its bottom, a first protrusion on the first limiting member, a second protrusion on the second limiting member, and a second groove on the support base. The protrusion directions of the first protrusion and the second protrusion are opposite. When the crown support presses the limiting member, the first protrusion of the first limiting member is accommodated in the first groove, and the second protrusion of the second limiting member is accommodated in the second groove.

[0013] This artificial tooth root structure features four sets of evenly spaced first through holes distributed around the periphery of the support unit, paired with four sets of second through holes precisely connected to the first through holes and located in the support base. Two sets of symmetrically arranged limiting members within the support unit, each with its free end fitted to one of the two through holes, ensure precise guidance and stable extension of the limiting members during clamping, guaranteeing uniform contact between the limiting members and the alveolar bone and preventing excessive localized stress. Simultaneously, the crown abutment has a first groove at its bottom, and the support base has a second groove. The two sets of limiting members each have first and second protrusions in opposite directions. During clamping, the first protrusion precisely fits into the first groove, and the second protrusion precisely fits into the second groove. This not only ensures precise positioning of the limiting members and prevents displacement, but also disperses stress during clamping, preventing damage to the limiting members or support base, further enhancing the stability of the artificial tooth root assembly. Qualitative and lifespan design, adaptable to different alveolar bone installation scenarios; Specific implementation method: Four sets of first through holes are uniformly machined around the periphery of the support unit, and four sets of second through holes communicating with the first through holes are machined at the corresponding positions of the support base. The two sets of limiting members are symmetrically assembled in the support unit, so that the free ends of each set of limiting members are aligned with the two sets of corresponding first and second through holes. A first groove is machined at the bottom of the crown abutment, and a second groove is machined on the support base. The first and second limiting members are respectively provided with first and second protrusions in opposite directions. After assembly, the crown abutment is tightened to press down on the two sets of limiting members. At this time, the first protrusion of the first limiting member is embedded in the first groove of the crown abutment, and the second protrusion of the second limiting member is embedded in the second groove of the support base. The free ends of the limiting members protrude from the implant synchronously through the corresponding first and second through holes, and abut against the external alveolar bone to achieve stable fixation, thus completing the assembly.

[0014] The first through hole includes a first straight hole and a circular hole disposed above the first straight hole. When the crown support presses the limiting member, the limiting member is pressed into the first straight hole through the circular hole.

[0015] The first through hole of this artificial tooth root structure adopts a combination structure of "first straight hole + upper round hole". The round hole is located above the first straight hole and the two are precisely connected to form a stepped guide channel. When the crown support is locked and pressed against the limiting component, the round hole can play a role in precisely guiding and buffering the limiting component, guiding the limiting component to be smoothly pressed into the lower first straight hole, avoiding the limiting component from being deviated, stuck or worn due to pressure. At the same time, the first straight hole can play a stabilizing role in the extension process of the limiting component, ensuring that the limiting component extends precisely in the preset direction and abuts against the alveolar bone. With the help of four sets of corresponding connected first and second through holes and two sets of cross-symmetrical limiting components, the stability and reliability of the limiting component's movement are further improved, and stress concentration is reduced.

[0016] The connecting plate is a U-shaped plate, with one end of the U-shaped plate connected to the first through hole and the other end of the U-shaped plate connected to the second through hole.

[0017] In this artificial tooth root structure, the connecting plate of the support part is designed as a U-shaped plate. One end of the U-shaped plate is precisely connected to the first through hole on the support unit, and the other end is connected to the second through hole on the support seat. This not only creates a smooth channel for the extension of the limiting member, ensuring that the limiting member extends smoothly through the first through hole, the U-shaped plate channel, and the second through hole, reducing frictional loss during the movement of the limiting member, but also enhances the connection stability between the first and second through holes, preventing misalignment or loosening at the connection point. At the same time, the U-shaped plate itself has good structural rigidity. After being integrally formed with the implant and the support part, it can further enhance the connection strength between the support part and the implant, distribute the stress during the assembly and use of the artificial tooth root, and prevent deformation of the support part. Combined with four sets of corresponding through holes and two sets of cross-symmetrical limiting members, it further improves the overall structural stability and service life of the artificial tooth root, and ensures the abutment and fixation effect between the limiting member and the alveolar bone.

[0018] The crown abutment includes a first connecting part and a second connecting part disposed below the first connecting part. An external thread is provided on the second connecting part. The first connecting part is provided with a hexagonal structure, which is used to adapt to an external locking tool to realize the screw-locking of the crown abutment and the cylindrical part.

[0019] The first connecting part is equipped with a hexagonal structure, which can be precisely adapted to external hexagonal locking tools, making it easy for operators to quickly and stably tighten or loosen the crown support, avoiding slippage or displacement during the tightening process, improving assembly efficiency and ease of operation. In conjunction with the synergistic effect of the U-shaped connecting plate, through hole and limiting component, it further ensures the overall assembly stability of the artificial tooth root, adapts to the needs of clinical implantation operations, and extends the service life of the components.

[0020] The first connecting part is used to connect with an external artificial crown, and the external artificial crown is fitted and fixed on the first connecting part.

[0021] The first groove and the first protrusion, as well as the second groove and the second protrusion, are all arc-shaped structures, with their arc surfaces fitting together to reduce stress concentration when the limiting member is pressed.

[0022] In this artificial tooth root structure, the first groove at the bottom of the crown abutment and the first protrusion of the first limiting member, as well as the second groove on the support and the second protrusion of the second limiting member, are all designed as arc-shaped structures. The arc-shaped surfaces are precisely fitted and fit together. Compared with the traditional planar fitting structure, this increases the contact area between the protrusion and the groove, effectively dispersing the stress generated when the crown abutment presses against the limiting member. This avoids local stress concentration that could lead to deformation or cracking of the limiting member, crown abutment, or support, thus extending the service life of the components. At the same time, the smooth fitting design of the arc-shaped surfaces guides the limiting member to move smoothly during the pressing process, preventing jamming or displacement. Combined with two sets of cross-symmetrically arranged limiting members, four sets of corresponding connected through holes, and U-shaped connecting plates, this further enhances the stability and reliability of the artificial tooth root assembly, ensuring precise contact and fixation between the limiting member and the alveolar bone, and meeting the needs of long-term clinical use.

[0023] The included angle of the V-shaped spike is 30°-60°, and the end of the spike has a rounded transition to avoid excessive trauma when it pierces the alveolar bone.

[0024] The cylindrical part and the support base are integrally formed, and the connecting plate, the cylindrical part, and the support base are all integrally formed structures, which improves the overall structural strength of the support part.

[0025] The included angle formed by the intersection of the two sets of limiting members is 90°. The four sets of first through holes and the four sets of second through holes are all evenly distributed at 90° intervals with the axis of the cylindrical part as the center, to ensure that the limiting members are subjected to uniform force.

[0026] The diameter of the circular hole is larger than the diameter of the first straight hole, and the circular hole and the first straight hole transition smoothly to form a guide slope, which facilitates the sliding of the limiting member from the circular hole into the first straight hole.

[0027] The inner wall of the U-shaped plate is provided with a guide groove, and the free end of the limiting member is provided with a guide protrusion that matches the guide groove, thereby limiting the movement direction of the positioning member and preventing deviation.

[0028] The limiting component is made of medical-grade elastic alloy material, which has good elastic recovery performance, ensuring that it can stably abut against the alveolar bone after being compressed, and is not easily deformed or damaged.

[0029] The depth of the receiving chamber is matched with the height of the support, and the top of the support is flush with the top of the receiving chamber to avoid the support protruding and affecting the installation of the crown rest.

[0030] The diameter of the first connecting part is larger than the diameter of the second connecting part. The first connecting part and the second connecting part transition smoothly to form a stepped surface. The stepped surface abuts against the top of the cylindrical part to achieve axial positioning of the crown support.

[0031] The first set of limiting members includes two sets of first arc-shaped strips respectively disposed at both ends of the first protrusion, and the second set of limiting members includes two sets of second arc-shaped strips respectively disposed at both ends of the second protrusion. Both the first and second arc-shaped strips are elastic. When the crown abutment is tightened downwards, the first and second arc-shaped strips undergo elastic deformation under the pressure of the crown abutment, causing the free end of the limiting element to extend outwards and penetrate through the first and second through holes into the alveolar bone. After deformation, the arc-shaped strips maintain continuous elastic rebound force, ensuring that the free end remains in a state of pressing against the alveolar bone outwards, forming a stable mechanical lock. This significantly improves the initial stability of the implant and promotes rapid attachment and growth of the alveolar bone.

[0032] The beneficial effects of this invention are as follows: This invention uses a crown abutment to lock and compress an elastic limiting member composed of a first arc-shaped strip and a second arc-shaped strip, causing it to undergo controllable elastic deformation. This allows the V-shaped spike to precisely insert into the alveolar bone through the first through hole of the support unit, the U-shaped connecting plate channel, and the second through hole of the implant. Combined with the upper and lower reverse arc-shaped concave-convex positioning structure, the stepped guide hole, and the integrally formed support and implant, this invention achieves multi-directional balanced fixation and precise guiding positioning of the implant. It is not only simple in structure, convenient to assemble, and reliable in locking operation, but also significantly improves the initial stability of the implant, avoids loosening and displacement during the osseointegration period, reduces trauma to the alveolar bone, disperses stress, extends service life, and greatly improves clinical applicability and osseointegration success rate. Attached Figure Description

[0033] Figure 1 This is an overall anatomical view of the present invention; Figure 2 This is an exploded view of the entire invention; Figure 3 This is an exploded view of the support portion of the present invention; Figure 4 This is a schematic diagram of the structure of the support base and support unit of the present invention; Figure 5 This is a schematic diagram of the crown support half-screwed to the support part of the present invention; Figure 6 This is a schematic diagram of the crown support of the present invention being fully screwed to the support portion; Figure 7 This is a schematic diagram of the structure of the crown support half-screwed to the support portion located in the alveolar bone according to the present invention; Figure 8 This is a schematic diagram of the structure of the crown abutment located in the alveolar bone of the present invention, which is fully screwed to the support portion; Figure 9 This is a schematic diagram of the overall implementation structure of the present invention.

[0034] The reference numerals in the figures include: 1. Implant; 2. Support; 3. Crown abutment; 4. Support base; 5. Support unit; 6. Limiting element; 7. First through hole; 8. Second through hole; 9. Spike; 11. Main body; 12. Receiving part; 13. Receiving chamber; 14. Cylindrical part; 15. Connecting plate; 16. Internal thread; 17. External thread; 18. First groove; 19. First protrusion; 21. Second protrusion; 22. Second groove; 23. First straight hole; 24. Round hole; 25. First connecting part; 26. Second connecting part; 27. Hexagonal structure; 28. Guide groove; 29. ​​First arc-shaped strip; 31. Second arc-shaped strip; 32. Alveolar bone; 33. Artificial crown. Detailed Implementation

[0035] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0036] Please see Figures 1 to 9 As shown, an artificial tooth root structure of the present invention includes an implant 1, a support portion 2 disposed within the implant 1, and a crown abutment 3. The support portion 2 includes a support base 4, a support unit 5 disposed on the support base 4, and a limiting member 6 accommodated within the support unit 5. The support unit 5 is provided with a first through hole 7, and the implant 1 is provided with a second through hole 8 communicating with the first through hole 7. The limiting member 6 is accommodated within the support unit 5, and its free end protrudes out of the support unit 5. The crown abutment 3 is accommodated within the support unit 5 and abuts against the limiting member 6. When the crown abutment 3 is locked within the support unit 5 and the limiting member 6 is pressed, the free end of the limiting member 6 protrudes out of the implant 1 through the first through hole 7 and the second through hole 8 and abuts against the external alveolar bone to achieve fixation.

[0037] The artificial tooth root structure, when locked by the crown abutment 3, presses down on the limiting member 6, driving the free end of the limiting member 6 to protrude from the implant 1 through the first through hole 7 and the second through hole 8 and abut against the alveolar bone. With the coordinated action of the components of the support part 2, it effectively improves the fixation strength between the artificial tooth root and the alveolar bone, solving the problem of insufficient initial stability of traditional implant 1. At the same time, the structure is reasonably designed, easy to assemble, and can be adapted to different alveolar bone conditions, improving clinical applicability. Specific implementation method: After the support seat 4, support unit 5 and limiting member 6 of the support part 2 are assembled, they are placed in the receiving chamber 13 of the implant 1. The crown abutment 3 is housed in the support unit 5 and abuts against the limiting member 6. By locking the crown abutment 3, it presses down on the limiting member 6. The free end of the limiting member 6 protrudes from the implant 1 through the first through hole 7 of the support unit 5 and the second through hole 8 of the implant 1, abutting against the external alveolar bone to achieve double fixation, completing the assembly and fixation of the artificial tooth root.

[0038] The free end of the limiting member 6 is provided with a spike 9, which is V-shaped.

[0039] This artificial tooth root structure features a V-shaped spike 9 at the free end of the limiting member 6. When the crown abutment 3 is locked, the V-shaped spike 9 protrudes from the implant 1 through the first through hole 7 of the support unit 5 and the second through hole 8 of the implant 1, allowing it to precisely penetrate the external alveolar bone. This significantly enhances the occlusal force and contact stability between the limiting member 6 and the alveolar bone, effectively solving the problems of traditional implants relying solely on thread fixation, insufficient initial stability, and easy loosening. Simultaneously, the V-shaped structure design disperses stress during insertion, preventing alveolar bone damage and making it suitable for osteoporotic bone environments, thus improving the quality of artificial teeth. Clinical application scope and service life of the root; Specific implementation method: The limiting member 6 equipped with V-shaped spike 9 is housed in the support unit 5. After the support part 2 is assembled as a whole, it is placed in the cavity 13 of the implant 1. The crown abutment 3 is housed and locked in the cylindrical part 14 of the support unit 5. During the locking process, the crown abutment 3 presses down on the limiting member 6, driving the V-shaped spike 9 at the free end of the limiting member 6 to pass through the first through hole 7 and the second through hole 8 in sequence and protrude out of the implant 1. The V-shaped spike 9 pierces into the external alveolar bone and is fixed with the outer wall of the implant 1 to form a double limiting, thus completing the stable assembly of the artificial tooth root.

[0040] The implant 1 includes a main body 11, a receiving part 12 formed on the main body 11, a receiving chamber 13 provided on the receiving part 12, and the support part 2 located in the receiving chamber.

[0041] The support portion 2 includes a cylindrical portion 14 disposed on the support base 4 and multiple sets of connecting plates 15 disposed on the side of the cylindrical portion 14. The end of the connecting plate 15 away from the cylindrical portion 14 is connected to the inner wall of the receiving portion 12. The cylindrical portion 14 is provided with an internal thread 16, and the crown support 3 is provided with an external thread 17. The crown support 3 is screwed to the internal thread 16 of the cylindrical portion 14 via the external thread 17.

[0042] This artificial tooth root structure features a receiving portion 12 and a receiving chamber 13 within the main body 11 of the implant 1. The support portion 2 and the implant 1 are integrally molded. The support seat 4, cylindrical portion 14, and multiple sets of connecting plates 15 of the support portion 2 are integrally machined with the main body 11 and receiving portion 12 of the implant 1, eliminating the need for separate assembly of the support portion 2 and the implant 1. This significantly improves the connection strength and structural integrity between the two, effectively distributing stress and preventing loosening or deformation at the connection between the support portion 2 and the implant 1. Simultaneously, the cylindrical portion 14 has internal threads 16, and the crown abutment 3 has external threads 17. The threaded connection enables a detachable and stable connection between the crown abutment 3 and the support portion 2, facilitating convenient assembly and reliable locking. It can precisely transmit locking force to compress the limiting component 6, thereby ensuring the connection between the limiting component 6 and the implant 1. The alveolar bone abutment and fixation effect, the overall structural design is reasonable, and the overall stability, assembly efficiency and service life of the artificial tooth root are improved. Specific implementation method: The main body 11, the receiving part 12 and the support part 2 (including the support seat 4, the cylindrical part 14 and the multiple sets of connecting plates 15) of the implant 1 are integrally formed, so that the end of the multiple sets of connecting plates 15 away from the cylindrical part 14 is naturally and integrally connected with the inner wall of the receiving part 12. There is no need to assemble the support part 2 and the implant 1 separately. Then, the crown abutment 3 is screwed to the internal thread 16 of the cylindrical part 14 through its external thread 17. When the crown abutment 3 is tightened, it transmits the locking force downward, pressing the limiting member 6 housed in the support unit 5. The limiting member 6 is driven to protrude out of the through hole and abut against the alveolar bone, completing the overall assembly and fixation of the artificial tooth root.

[0043] The first through hole 7 is provided in four sets, and the second through hole 8 is provided in four sets. The four sets of first through holes 7 are evenly distributed around the support unit 5, and the four sets of second through holes 8 are correspondingly opened at the support base 4 at the positions corresponding to the four sets of first through holes 7. The limiting member 6 is provided in two sets, and the two sets of limiting members 6 are arranged symmetrically in the support unit 5. The free end of each set of limiting members 6 is adapted to the two sets of first through holes 7 and the two sets of second through holes 8.

[0044] The crown support 3 has a first groove 18 at its bottom, a first protrusion 19 on the first limiting member 6, a second protrusion 21 on the second limiting member 6, and a second groove 22 on the support base 4. The protrusion directions of the first protrusion 19 and the second protrusion 21 are opposite. When the crown support 3 presses the limiting member 6, the first protrusion 19 of the first limiting member 6 is accommodated in the first groove 18, and the second protrusion 21 of the second limiting member 6 is accommodated in the second groove 22.

[0045] This artificial tooth root structure features four sets of evenly spaced first through holes 7 distributed around the periphery of the support unit 5, paired with four sets of second through holes 8 corresponding to those in the support base 4 and precisely communicating with the first through holes 7. It also incorporates two sets of symmetrically arranged limiting members 6 within the support unit 5, each with its free end fitted to one of the two through holes. This design ensures precise guidance and stable extension of the limiting members 6 during compression, guaranteeing uniform contact between the limiting members 6 and the alveolar bone and preventing excessive localized stress. Simultaneously, the crown abutment 3 has a first groove 18 at its bottom, and the support base 4 has a second groove 22. The two sets of limiting members 6 each have a first protrusion 19 and a second protrusion 21 in opposite directions. During compression, the first protrusion 19 precisely fits into the first groove 18, and the second protrusion 21 precisely fits into the second groove 22. This not only ensures precise positioning of the limiting members 6, preventing them from shifting, but also disperses stress during tightening, preventing damage to the limiting members 6 or the support base 4, further enhancing the assembly stability of the artificial tooth root. With optimal performance and lifespan, it is suitable for different alveolar bone installation scenarios. Specific implementation method: Four sets of first through holes 7 are uniformly machined around the periphery of the support unit 5. Four sets of second through holes 8 connected to the first through holes 7 are machined at corresponding positions on the support base 4. Two sets of limiting members 6 are symmetrically assembled inside the support unit 5, so that the free ends of each set of limiting members 6 are aligned with the two corresponding sets of first and second through holes 8. A first groove 18 is machined at the bottom of the crown abutment 3, and a second groove 22 is machined on the support base 4. The first and second limiting members 6 are respectively provided with first and second protrusions 21 in opposite directions. After assembly, the crown abutment 3 is tightened to press down on the two sets of limiting members 6. At this time, the first protrusion 19 of the first limiting member 6 is embedded in the first groove 18 of the crown abutment 3, and the second protrusion 21 of the second limiting member 6 is embedded in the second groove 22 of the support base 4. The free ends of the limiting members 6 protrude synchronously from the implant 1 through the corresponding first and second through holes 8, abutting against the external alveolar bone to achieve stable fixation, thus completing the assembly.

[0046] The first through hole 7 includes a first straight hole 23 and a round hole 24 disposed above the first straight hole 23. When the crown support 3 presses the limiting member 6, the limiting member 6 is pressed into the first straight hole 23 through the round hole 24.

[0047] The first through hole 7 of this artificial tooth root structure adopts a combination structure of "first straight hole 23 + upper round hole 24". The round hole 24 is located above the first straight hole 23 and the two are precisely connected to form a stepped guide channel. When the crown support 3 locks and presses the limiting member 6, the round hole 24 can play a precise guiding and buffering role for the limiting member 6, guiding the limiting member 6 to be pressed smoothly into the lower first straight hole 23, avoiding the limiting member 6 from being deviated, stuck or worn due to pressure. At the same time, the first straight hole 23 can play a stable limiting role in the extension process of the limiting member 6, ensuring that the limiting member 6 extends precisely in the preset direction and abuts against the alveolar bone. With the help of four sets of corresponding connected first and second through holes 8 and two sets of cross-symmetrical limiting members 6, the stability and reliability of the movement of the limiting member 6 are further improved and stress concentration is reduced.

[0048] The connecting plate 15 is a U-shaped plate, with one end of the U-shaped plate connected to the first through hole 7, and the other end of the U-shaped plate connected to the first through hole 7 connected to the second through hole 8.

[0049] In this artificial tooth root structure, the connecting plate 15 of the support part 2 is designed as a U-shaped plate. One end of the U-shaped plate is precisely connected to the first through hole 7 on the support unit 5, and the other end is connected to the second through hole 8 on the support seat 4. This not only creates a smooth channel for the extension of the limiting member 6, ensuring that the limiting member 6 extends smoothly through the first through hole 7, the U-shaped plate channel, and the second through hole 8, reducing frictional loss when the limiting member 6 moves, but also strengthens the connection stability between the first through hole 7 and the second through hole 8, preventing misalignment or loosening at the connection point. At the same time, the U-shaped plate itself has good structural rigidity. After being integrally formed with the implant 1 and the support part 2, it can further enhance the connection strength between the support part 2 and the implant 1, distribute the force during the assembly and use of the artificial tooth root, and prevent the support part 2 from deforming. Combined with four sets of corresponding through holes and two sets of cross-symmetrical limiting members 6, it further improves the overall structural stability and service life of the artificial tooth root, and ensures the abutment and fixation effect between the limiting member 6 and the alveolar bone.

[0050] The crown abutment 3 includes a first connecting part 25 and a second connecting part 26 disposed below the first connecting part 25. An external thread 17 is disposed on the second connecting part 26. The first connecting part 25 is provided with a hexagonal structure 27, which is used to adapt to an external locking tool to realize the screw-locking of the crown abutment 3 and the cylindrical part 14.

[0051] The first connecting part 25 is provided with a hexagonal structure 27, which can be precisely adapted to external hexagonal locking tools, making it easy for operators to quickly and stably tighten or loosen the crown support 3, avoiding slippage or displacement during the tightening process, improving assembly efficiency and ease of operation. In conjunction with the synergistic effect of the U-shaped connecting plate 15, the through hole and the limiting component 6, it further ensures the overall assembly stability of the artificial tooth root, adapts to the needs of clinical implantation operations, and extends the service life of the components.

[0052] like Figure 9 As shown, the first connecting part 25 is used to connect with an external artificial crown, and the external artificial crown is fitted and fixed on the first connecting part 25.

[0053] The first groove 18 and the first protrusion 19, and the second groove 22 and the second protrusion 21 are all arc-shaped structures, with the arc surfaces fitting together to reduce stress concentration when the limiting member 6 is pressed.

[0054] In this artificial tooth root structure, the first groove 18 at the bottom of the crown abutment 3 and the first protrusion 19 of the first limiting member 6, as well as the second groove 22 on the support 4 and the second protrusion 21 of the second limiting member 6, are all designed as arc-shaped structures. The arc-shaped surfaces are precisely fitted and fit together. Compared with the traditional planar fitting structure, this increases the contact area between the protrusion and the groove, effectively dispersing the stress generated when the crown abutment 3 presses against the limiting member 6, avoiding local stress concentration that could lead to deformation or cracking of the limiting member 6, crown abutment 3, or support 4, and extending the service life of the components. At the same time, the smooth fitting design of the arc-shaped surfaces can guide the limiting member 6 to move smoothly during the pressing process, preventing jamming or displacement. Combined with two sets of cross-symmetrically arranged limiting members 6, four sets of corresponding connected through holes, and U-shaped connecting plates 15, this further improves the stability and reliability of the artificial tooth root assembly, ensuring precise contact and fixation between the limiting member 6 and the alveolar bone, and meeting the needs of long-term clinical use.

[0055] The included angle of the V-shaped spike 9 is 30°-60°, and the end of the spike 9 is provided with a rounded transition to avoid excessive trauma when it pierces the alveolar bone.

[0056] The cylindrical part 14 and the support base 4 are integrally formed, and the connecting plate 15, the cylindrical part 14, and the support base 4 are all integrally formed structures, which improves the overall structural strength of the support part 2.

[0057] The included angle formed by the intersection of the two sets of limiting members 6 is 90°. The four sets of first through holes 7 and the four sets of second through holes 8 are all evenly distributed at 90° intervals with the axis of the cylindrical part 14 as the center, to ensure that the limiting members 6 are subjected to uniform force.

[0058] The diameter of the circular hole 24 is larger than the diameter of the first straight hole 23. The circular hole 24 and the first straight hole 23 transition smoothly to form a guide slope, which facilitates the sliding of the limiting member 6 from the circular hole 24 into the first straight hole 23.

[0059] The inner wall of the U-shaped plate is provided with a guide groove 28, and the free end of the limiting member 6 is provided with a guide protrusion that matches the guide groove 28, thereby limiting the movement direction of the positioning member and preventing deviation.

[0060] The limiting component 6 is made of medical-grade elastic alloy material, which has good elastic recovery performance, ensuring that it can stably abut against the alveolar bone after being compressed, and is not easily deformed or damaged.

[0061] The depth of the receiving chamber 13 is adapted to the height of the support 2, and the top of the support 2 is flush with the top of the receiving chamber 13 to avoid the support 2 protruding and affecting the installation of the crown support 3.

[0062] The diameter of the first connecting part 25 is larger than the diameter of the second connecting part 26. The first connecting part 25 and the second connecting part 26 smoothly transition to form a stepped surface. The stepped surface abuts against the top of the cylindrical part 14 to achieve axial positioning of the crown support 3.

[0063] The first set of limiting members 6 includes two sets of first arc-shaped strips 29 respectively disposed at both ends of the first protrusion 19, and the second set of limiting members 6 includes two sets of second arc-shaped strips respectively disposed at both ends of the second protrusion 21. Both the first arc-shaped strip 29 and the second arc-shaped strip are elastic arc-shaped strips. When the crown abutment 3 is locked downwards, the first arc-shaped strip 29 and the second arc-shaped strip are compressed by the crown abutment 3, causing elastic deformation. This causes the free end of the limiting member 6 to extend outwards and pass through the first through hole 7 and the second through hole 8 to penetrate the alveolar bone. After deformation, the arc-shaped strips maintain continuous elastic rebound force, ensuring that the free end always remains in a state of pressing against the alveolar bone outwards, forming a stable mechanical lock. This significantly improves the initial stability of the implant 1 and is conducive to rapid attachment and growth of the alveolar bone.

[0064] The rest of this embodiment is the same as that in Embodiment 1. Features not explained in this embodiment are explained using the methods in Embodiment 1, and will not be repeated here.

[0065] The above description is only a preferred embodiment of the present invention. For those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. An artificial tooth root structure, characterized in that: The device includes an implant (1), a support (2) disposed within the implant (1), and a crown abutment (3). The support (2) includes a support base (4), a support unit (5) disposed on the support base (4), and a limiting member (6) housed within the support unit (5). The support unit (5) has a first through hole (7), and the implant (1) has a second through hole (8) connected to the first through hole (7). The limiting member (6) is housed within the support unit (5), and its free end protrudes from the support unit (5). The crown abutment (3) is housed within the support unit (5) and abuts against the limiting member (6). When the crown abutment (3) is locked within the support unit (5) and the limiting member (6) is pressed, the free end of the limiting member (6) protrudes from the implant (1) through the first through hole (7) and the second through hole (8) and abuts against the external alveolar bone (32) to achieve fixation.

2. The artificial tooth root structure according to claim 1, characterized in that: The free end of the limiting member (6) is provided with a spike (9), and the spike (9) is V-shaped.

3. The artificial tooth root structure according to claim 1, characterized in that: The implant (1) includes a main body (11), a receiving part (12) opened on the main body (11), a receiving chamber (13) provided on the receiving part (12), and the support part (2) located in the receiving chamber.

4. The artificial tooth root structure according to claim 3, characterized in that: The support part (2) includes a cylindrical part (14) disposed on the support base (4) and multiple sets of connecting plates (15) disposed on the side of the cylindrical part (14). The end of the connecting plate (15) away from the cylindrical part (14) is connected to the inner wall of the receiving part (12). The cylindrical part (14) is provided with an internal thread (16), and the crown support (3) is provided with an external thread (17). The crown support (3) is screwed to the internal thread (16) of the cylindrical part (14) via the external thread (17).

5. The artificial tooth root structure according to claim 4, characterized in that: The first through hole (7) is provided in four sets, and the second through hole (8) is provided in four sets. The four sets of first through holes (7) are evenly distributed around the support unit (5), and the four sets of second through holes (8) are opened at the positions corresponding to the support base (4) and the four sets of first through holes (7). The limiting member (6) is provided in two sets. The two sets of limiting members (6) are arranged in a cross-symmetrical manner in the support unit (5), and the free end of each set of limiting members (6) is adapted to the two sets of first through holes (7) and the two sets of second through holes (8).

6. The artificial tooth root structure according to claim 5, characterized in that: The crown support (3) has a first groove (18) at its bottom, a first protrusion (19) on the first limiting member (6), a second protrusion (21) on the second limiting member (6), and a second groove (22) on the support base (4). The protrusion directions of the first protrusion (19) and the second protrusion (21) are opposite. When the crown support (3) presses the limiting member (6) together, the first protrusion (19) of the first limiting member (6) is accommodated in the first groove (18), and the second protrusion (21) of the second limiting member (6) is accommodated in the second groove (22).

7. The artificial tooth root structure according to claim 1, characterized in that: The first through hole (7) includes a first straight hole (23) and a round hole (24) disposed above the first straight hole (23). When the crown support (3) presses the limiting member (6) tightly, the limiting member (6) is pressed into the first straight hole (23) through the round hole (24).

8. The artificial tooth root structure according to claim 4, characterized in that: The connecting plate (15) is a U-shaped plate. One end of the U-shaped plate is connected to the first through hole (7), and the other end of the U-shaped plate is connected to the second through hole (8).

9. The artificial tooth root structure according to claim 4, characterized in that: The crown abutment (3) includes a first connecting part (25) and a second connecting part (26) located below the first connecting part (25). An external thread (17) is provided on the second connecting part (26). The first connecting part (25) is provided with a hexagonal structure (27). The hexagonal structure (27) is used to adapt to external locking tools to realize the screw-locking of the crown abutment (3) and the cylindrical part (14).

10. An artificial tooth root structure according to claim 6, characterized in that: The first groove (18) and the first protrusion (19), and the second groove (22) and the second protrusion (21) are all arc-shaped structures, with the arc surfaces fitting together to reduce stress concentration when the limiting member (6) is pressed.

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