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CN-121465754-B - Dental implant and dental implant restoration system

CN121465754BCN 121465754 BCN121465754 BCN 121465754BCN-121465754-B

Abstract

The invention provides a dental implant and a dental implant restoration system, wherein the dental implant comprises a neck, a middle part and a root which are sequentially connected with each other, the neck is columnar and has a diameter D1, the middle part is conical and has a maximum diameter D2, a middle external thread is arranged on the surface of the middle part, the root is columnar and has a diameter D3, a root external thread is arranged on the surface of the root, the values of D1, D2 and D3 are met, D2 has a maximum value larger than D1 and D3, and initial stability of the implant can be improved. The invention is especially suitable for alveolar bone conditions of insufficient bone mass or osteoporosis through unique implant body shape design and matched drilling tool systems, can obviously enhance the initial stability of the implant body and reduce the risk of loosening the implant body, thereby effectively improving the success rate of implantation.

Inventors

  • REN JIE
  • LIN XIANCHENG
  • LI PEIWEN
  • LIU YUANGANG
  • OU ZHIJIAN
  • LIAO JUNLI
  • HUANG GAOYANG
  • WANG CHUNXIANG

Assignees

  • 重庆医科大学附属第一医院
  • 斯迈英图(厦门)医疗科技有限公司

Dates

Publication Date
20260512
Application Date
20260105

Claims (9)

  1. 1. A dental implant is characterized by comprising a neck, a middle part and a root which are sequentially connected with each other, wherein the neck is columnar and has a diameter D1, at least part of the middle part is conical, the diameter of the conical part of the middle part gradually decreases in the direction from the neck to the root and has a maximum diameter D2, a middle external thread is arranged on the surface of the middle part, the root is columnar and has a diameter D3, the root surface is provided with a root external thread, the values of D1, D2 and D3 meet the requirement that D2> D1> D3, the root adopts a columnar design with a uniform diameter, the diameter D3 of the root is kept unchanged when the diameter of the crown of the neck is changed, and the axial lengths of the neck, the middle part and the root are L1, L2 and L3 respectively, and the proportional relation of L1, L2 and L3 is L1:L3=1 (1.5-2.0): (0.5-5).
  2. 2. The dental implant according to claim 1, wherein the diameter D3 of the root of the implant is designed to be 2.5mm to 3.0mm, the maximum load that the root can withstand at this size is 285.27N to 470.12N, the diameter D1 of the neck of the implant is designed to be 3.5mm to 5.5mm, and the maximum diameter D2 of the middle part of the implant is 0.2mm to 0.3mm larger than the diameter D1 of the neck.
  3. 3. The dental implant of claim 1, wherein the dental implant is provided with a helical cutting flute extending helically from a section of the root to a section of the middle portion.
  4. 4. The dental implant of claim 1, wherein the central external thread has a thread depth greater than the root external thread and the root external thread has a thread pitch less than the thread pitch of the central external thread.
  5. 5. The dental implant of claim 1, wherein the root male thread structure is of a gradual design in which the thread depth gradually increases toward the root and gradually decreases toward the crown.
  6. 6. The dental implant of claim 1, wherein the section of the neck is provided with a neck external thread and a smooth collar structure, the neck external thread having a thread depth less than the middle external thread and the root external thread.
  7. 7. The dental implant of claim 1, wherein L1 is in a range of 2.0 to 3.0mm, L2 is in a range of 3 to 6mm, and L3 is in a range of 1 to 15mm.
  8. 8. A dental implant restoration system comprising a dental implant according to any of claims 1-7, and further comprising a mating implantation tool comprising a pioneer drill, a shaping drill, and a tapping drill.
  9. 9. The dental implant restoration system according to claim 8, wherein the pioneer drill comprises a first shank portion, a bit body portion, and a tip portion which are sequentially connected to each other, the bit body portion having a diameter which is slightly gradually reduced in a direction away from the connection of the first shank portion, and/or, The forming drill comprises a second rod part and a forming main body part which are connected with each other, the forming main body part is provided with a forming section, the diameter of the forming section gradually decreases in the direction away from the second rod part, namely the forming section is used for forming a conical aperture, the front end of the forming section is also provided with a guide part, the guide part is of a round blunt-end structure, and/or, The tap drill includes a third shank portion and a tap portion connected to each other.

Description

Dental implant and dental implant restoration system Technical Field The invention relates to the technical field of dental implant devices, in particular to a dental implant and a dental implant restoration system. Background In the field of oral implantation, bone mass and bone mass of alveolar bone are one of the key factors affecting success rate of implantation surgery. However, the clinical presence of insufficient bone mass or osteoporosis in a large number of patients at the site of implantation presents a significant challenge to implantation procedures. The conventional implants currently in wide use mostly adopt a uniform design (i.e., the diameter of the implant varies linearly from root to crown), which requires the implant site to have sufficient alveolar bone width from root tip to neck to completely cover the implant. If the alveolar bone width is insufficient, guided Bone Regeneration (GBR) or other bone augmentation procedures are often required, significantly increasing the surgical trauma, operating time and economic burden on the patient. Therefore, there is a great need to develop a novel implant that reduces the lateral width requirements of the alveolar bone as much as possible while ensuring the mechanical strength of the implant, so as to accommodate more clinical complex cases. When the alveolar bone density is poor, it is difficult for the implant to obtain ideal initial stability, significantly reducing the success rate of implantation. Studies have shown that the length and shape design of the implant is closely related to its initial stability. Therefore, it is necessary to increase the effective implantation length of the implant within a safe range through innovative external structural design to enhance the initial stability in the low bone density region. In addition, in order to adapt to the uniform appearance of the traditional implant, the preparation of the planting hole usually needs to rely on a plurality of drill points to perform full-length step-by-step reaming, and the problems of complicated operation steps, increased risk of bone burn, increased probability of position deviation, low hole preparation efficiency and the like exist in the mode, so that the final planting effect is adversely affected. In view of the above, there is a great clinical need for an implant and a matched implant tool that can rapidly and stably complete the implantation under the conditions of insufficient bone mass and osteoporosis, so as to improve the overall implantation success rate, reduce the pain of patients, reduce the treatment cost, and optimize the clinical operation experience. Disclosure of Invention To this end, the present invention provides a dental implant and a dental implant restoration system, which address at least one of the above problems. The invention is realized by the following scheme: The invention provides a dental implant which comprises a neck, a middle part and a root which are sequentially connected with each other, wherein the neck is columnar and has a diameter D1, at least part of the middle part is conical and has a maximum diameter D2, a middle external thread is arranged on the surface of the middle part, the root is columnar and has a diameter D3, a root external thread is arranged on the surface of the root, and the values of D1, D2 and D3 are met, wherein D2 has a maximum value larger than D1 and D3. In one embodiment, the values of D1, D2 and D3 satisfy the values D2> D1> D3. In one embodiment, the diameter D3 of the root of the implant is designed to be 2.5 mm-3.0 mm, the maximum load that the root can withstand under the dimension is 285.27 n-470.12 n, the diameter D1 of the neck of the implant is designed to be 3.5 mm-5.5 mm, and the maximum diameter D2 of the middle part of the implant is 0.2 mm-0.3 mm larger than the diameter D1 of the neck. Wherein in one embodiment the dental implant is provided with a helical cutting groove extending helically from a section of the root to a section of the middle part. Wherein, in one embodiment, the thread depth of the middle external thread is greater than the root external thread, and the pitch of the root external thread is less than the pitch of the middle external thread. In one embodiment, the root external thread structure adopts a gradual change design, wherein the thread depth gradually deepens towards the root direction and gradually becomes shallower towards the crown direction. Wherein in one embodiment the section of the neck is provided with a neck external thread and a smooth collar structure, the neck external thread having a thread depth smaller than the middle external thread and the root external thread. In one embodiment, the axial lengths of the neck, the middle and the root sections of the dental implant are L1, L2 and L3, respectively, and the relationship of L2> L1 is satisfied, the ratio of L1, L2 and L3 is L1:L2:L3=1 (1.5-2.0): (0.5-5), the value range of L1 is 2.0-3.0 mm, th