Retention device for one-section type short implant dental implant

Abstract

The utility model discloses a retention device for one-section type short implant tooth implantation, and relates to the technical field of human oral medicines.The device comprises a short implant, a retention screw and a repair abutment, one end of the short implant is implanted into an alveolar bone to serve as a tooth root, the other end of the short implant is connected with the repair abutment outside the alveolar bone, and an internal thread plug way obliquely penetrates through the interior of the short implant; an inlet of the bolt channel is formed in the side wall of the end, located outside the alveolar bone, of the short implant, an outlet of the bolt channel is formed in the side wall of the end, located inside the alveolar bone, of the short implant, one end of the retention screw is implanted into the alveolar bone through the internal thread bolt channel to serve as a secondary root, and the other end of the retention screw is in threaded connection with the internal thread bolt channel. The retention screw and the short implant form cross locking in the alveolar bone to firmly fix the short implant on the alveolar bone; according to the technical scheme, the retention screw is additionally arranged on the short implant, and the part, implanted into the alveolar bone, of the retention screw forms the secondary root of the short implant, so that retention and early-stage stability of the implanted tooth are guaranteed, stress concentration is avoided, the implantation success rate and the long-term retention rate are improved, and the implantation repair indication is expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of human oral medicine, in particular to a one-stage short implant dental implant retention device. Background Art

[0002] Implanting missing teeth with threaded, tapped cylindrical or conical implants is the mainstream restoration method for missing teeth. After decades of technological development, clinical technology applications have become very mature. Dental implants do not require the wear of healthy adjacent teeth, and are as comfortable and natural as autologous teeth after implantation. They are unanimously recognized by most patients with missing teeth. However, in actual clinical implant surgery, many cases cannot be implanted due to insufficient thickness or width of the alveolar bone, requiring bone augmentation or other implant surgery such as maxillary sinus lift and zygomatic bone implantation. This not only increases the patient's medical expenses, but also increases the patient's pain, prolongs the tooth restoration time, and has a high risk of surgery and a high failure rate.

[0003] The 2018 International Team for Implantology (ITI) consensus meeting defined short implants as implants with a length of ≤6 mm. In addition, some scholars define implants with a length of ≤6 mm as ultrashort implants or extrashort implants.

[0004] Ultra-short implants have been favored by more doctors in recent years and have been used more and more widely because of their advantages such as less bone demand, less trauma, simpler procedures, and relatively less pain for patients. However, due to the difficulty in designing, machining, and surface processing of short implants, the small implant-bone contact area (BICA) and overly concentrated stress distribution lead to a low retention rate of short implants, especially in the maxillary posterior area, because the upper part is a hollow maxillary sinus and the alveolar bone is osteoporotic. In addition, more patients with tooth loss due to periodontal disease have alveolar bone resorption and a lower thickness of alveolar bone, so they need short implants or even ultra-short implants less than 4 mm. The long-term retention rate of short implants is even lower.

[0005] Therefore, the ideal short implant should ensure the initial stability of the implant within the implantable bone thickness of 4mm until the implant produces secondary stability, and should not be afraid of the looseness of the alveolar bone, and have a long-term retention rate after implantation. Increasing the implant-bone contact area and avoiding stress concentration are the keys to the successful implantation and long-term retention of short implants. Utility Model Content

[0006] The purpose of the utility model is to provide a one-piece short implant dental implant retention device, which adds a structure with the same function as the auxiliary root during the short implant implantation process, effectively solving the problems of small short implant bone contact area, small initial retention force, and stress concentration resulting in high short implant failure rate and low long-term retention rate.

[0007] The technical solution of the utility model is: to provide a one-stage short implant dental implant retention device, the retention device comprises: a short implant, a retention screw and a repair base;

[0008] One end of the short implant is installed in the alveolar bone, and the other end is arranged outside the alveolar bone and connected to the repair base. An internal thread bolt channel is arranged inside the short implant, and the internal thread bolt channel obliquely penetrates the short implant. One end of the retention screw is implanted into the alveolar bone through the internal thread bolt channel, and the other end is arranged in the internal thread bolt channel and connected to the internal thread bolt channel. The repair base is connected to the implant crown.

[0009] Furthermore, one end of the short implant is a retainer, and the other end is an implant. The implant is installed in the alveolar bone, and the retainer is arranged outside the alveolar bone. The diameter of the implant is greater than the diameter of the retainer.

[0010] Furthermore, the inlet end of the inner thread bolt channel is arranged on the side wall of the retainer, the outlet end of the inner thread bolt channel is arranged on the side wall of the implant, and the inner thread bolt channel passes through the center of the short implant.

[0011] Furthermore, a thread is provided on the inner wall of the inner thread bolt channel, and the thread matches the thread on the outer wall of the retaining screw.

[0012] Furthermore, the threaded end of the retaining screw passes through the internal thread bolt channel from the entrance and exit ends of the internal thread bolt channel, is screwed into the alveolar bone on one side of the implant and fixedly connected to the alveolar bone, the head end of the retaining screw is completely screwed into the internal thread bolt channel and is threadedly connected to the short implant, and the retaining screw serves as a secondary root of the short implant and forms a cross-locking knot with the short implant inside the alveolar bone.

[0013] Further, the restoration abutment includes a gingival portion and a crown retention portion;

[0014] The transgingival part is installed in the gums between the alveolar bone wall and the gum edge, the lower end of the transgingival part contacts the alveolar bone wall, and the upper end contacts the gum edge. The crown retention part is set outside the gums and connected to the implant crown.

[0015] Furthermore, a crown edge abutment is provided at one end of the gingival portion that contacts the gingival edge, and the crown edge abutment abuts against the implant crown;

[0016] The diameter of the end of the gingival part that contacts the alveolar bone wall is smaller than the diameter of the end that contacts the gingival edge. The diameter of the crown edge abutment is the maximum diameter within the range that the gums can bear, and the diameter of the crown edge abutment is larger than the diameter of the crown retention part.

[0017] Furthermore, two retaining grooves are symmetrically arranged on the upper end of the retainer, and two retaining columns matching the retaining grooves are symmetrically arranged on the inner wall of the repair base at positions in contact with the upper end of the retainer. The repair base is bonded to the retainer, and the two retaining columns on the inner wall of the repair base are respectively embedded in the two retaining grooves of the retainer.

[0018] Furthermore, the restoration base is made of zirconium oxide material.

[0019] The beneficial effects of the utility model are:

[0020] First, the technical solution in the utility model is to obliquely set an internal thread bolt channel inside the short implant and match it with a corresponding fixing screw. One side port of the internal thread bolt channel is on the side wall of the short implant at one end outside the alveolar bone, and the other side port is on the side wall of the short implant at one end inside the alveolar bone. After the short implant is implanted into the alveolar bone and the fixing screw is installed, one end of the short implant is implanted into the alveolar bone through the internal thread bolt channel, and the other end remains in the internal thread bolt channel and is threadedly connected to the internal thread bolt channel. The fixing screw and the short implant form a cross-locking knot inside the alveolar bone. The cross-locking knot can increase the fixing force between the short implant and the alveolar bone, and the part of the fixing screw implanted into the alveolar bone can also form a secondary root of the short implant to avoid stress concentration. Compared with the short implant implanted separately in the prior art, the internal thread bolt channel and fixing screw added in the technical solution of the utility model can solve the problem of low retention rate of short implants caused by small implants, small bone contact area and overly concentrated stress distribution, and improve the success rate and long-term retention rate of short implants.

[0021] Second, the technical solution in the utility model can be used to fix short implants of shorter length, which is more suitable for situations where there is insufficient bone mass. In the actual process of dental implants, many patients are unable to have implants due to insufficient thickness or width of the alveolar bone, and require bone augmentation, which increases the patient's medical expenses and pain, prolongs the tooth restoration time, and has a high surgical risk and failure rate. The use of the technical solution in the utility model can solve the problem of being unable to implant or having a high failure rate due to insufficient bone mass. The technical solution of the utility model is suitable for ultra-short implants up to 4mm, which can be implanted even in situations where there is insufficient bone mass, without the need for bone augmentation, and the retention rate is increased due to the presence of accessory roots. At the same time, the use of one-stage dental implants requires lower costs, reduces patient trauma and pain, and shortens tooth restoration time. Compared with the prior art, the technical solution of the utility model has more social value and popular significance.

[0022] Third, the technical solution in the utility model adds a truncated cone-shaped gingival part to the design of the repair base, and its diameter gradually increases from the alveolar bone wall to the gingival edge. The side where the gingival part abuts against the implant crown is provided with a crown edge base, and the crown edge base diameter is set to the maximum diameter within a reasonable range. The gingival part can expand the gingival edge, better support and fix the implant crown, and avoid the problem of food retention due to the narrow crown neck and wide jaw face after the subsequent implant crown repair. The repair base can fit closely with the gingival edge to avoid black lines on the gingival edge. In the preferred solution of the utility model, the repair base is made of zirconium oxide material, and the zirconium oxide surface after sintering and polishing is not easy to colonize bacteria, which reduces the occurrence of peri-implantitis. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a side cross-sectional view of the alveolar implantation site after implantation of a one-piece short implant according to an embodiment of the utility model;

[0024] Figure 2 is a front view of a short implant according to an embodiment of the utility model;

[0025] Figure 3 is a back view of a short implant according to an embodiment of the utility model;

[0026] Figure 4 is a longitudinal cross-sectional view of a short implant according to an embodiment of the utility model;

[0027] Figure 5 It is a schematic diagram of the mechanism of a retaining screw according to an embodiment of the utility model;

[0028] Figure 6 is a top view of a short implant according to an embodiment of the utility model;

[0029] Figure 7 It is a longitudinal cross-sectional view of a restoration abutment according to an embodiment of the utility model.

[0030] Among them, 1-short implant, 11-retainer, 101-retention groove, 12-implant, 13-internal thread channel, 2-retention screw, 3-restoration abutment, 31-transgingival part, 301-crown edge abutment, 32-crown retention part, 4-gingiva, 5-alveolar bone. DETAILED DESCRIPTION

[0031] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0032] In the following description, many specific details are elaborated to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0033] like Figure 1 As shown, this embodiment provides a one-piece short implant dental implant retention device, the retention device comprising: a short implant 1, a retention screw 2 and a repair base 3.

[0034] One end of the short implant 1 is installed in the alveolar bone 5, and the other end is arranged outside the alveolar bone 5 and connected to the repair base 3. An internal thread bolt channel 13 is arranged inside the short implant 1. The internal thread bolt channel 13 obliquely penetrates the short implant 1 and passes through the center of the short implant 1. The entrance end of one side of the internal thread bolt channel 13 is arranged on the side wall of the short implant 1 located at the end outside the alveolar bone 5, and the exit end of the other side of the internal thread bolt channel 13 is arranged on the side wall of the short implant 1 located at the end inside the alveolar bone 5. The threaded end of the fixing screw 2 is implanted into the alveolar bone 5 through the internal thread bolt channel 13, and the head end of the fixing screw 2 is screwed into the internal thread bolt channel 13 and is threadedly connected with the internal thread bolt channel 13.

[0035] like Figures 2 to 4 As shown, the short implant 1 includes a retainer 11, an implant 12 and an inner thread bolt channel 13. The short implant 1 has a retainer 11 at one end and an implant 12 at the other end. The implant 12 is installed in the alveolar bone 5. It is conical and has a self-tapping screw on the outside. The implant 12 is used to connect the alveolar bone 5 and provide a stable support for the retainer 11, so that the short implant 1 and other structures connected to the short implant 1 can be firmly fixed in the oral cavity. The retainer 11 is located outside the alveolar bone 5 and is bonded to the repair base 3. It is cylindrical. The diameter of the implant 12 is larger than the diameter of the retainer 11. The retainer 11 is used to provide a stable basic support for the subsequent installation of the repair base 3 and the implant crown. In this embodiment, the edge of the retainer 11 differs from the edge of the implant 12 by 0.5 mm.

[0036] An inner thread bolt channel 13 passing through the center of the short implant 1 is obliquely arranged inside the short implant 1. The inner thread bolt channel 13 passes through the short implant 1, that is, the inner thread bolt channel 13 is a through hole passing through the short implant 1, and its entrance end on one side is located on the side wall of the retainer 11, and the exit end on the other side is located on the side wall of the implant 12. A thread is arranged on the inner wall of the inner thread bolt channel 13, and the thread matches the thread on the outer wall of the fixing screw 2. The threaded end of the fixing screw 2 can pass through the inner thread bolt channel 13 and be implanted into the alveolar bone 5. The head end of the fixing screw 2 is screwed into the inner thread bolt channel 13 and is threadedly connected with the inner thread bolt channel 13. The fixing screw 2 is respectively fixed to the short implant 1 and the alveolar bone 5 to form a whole, so that the short implant 1 is firmly fixed to the alveolar bone 5.

[0037] like Figure 6As shown, two retaining grooves 101 are symmetrically arranged on the upper end of the retainer 11, and the retaining grooves 101 are used to fix the position of the repair base 3 to prevent the repair base 3 from rotating under the action of external force after being connected to the retainer 11. An inner hexagonal groove is arranged at the center position of the top plane of the retainer 11, and the inner hexagonal groove is used to screw and tighten the short implant 1 during the implantation process.

[0038] like Figure 5 As shown, the threaded end of the retaining screw 2 (i.e., its tip) is V-shaped, and the V-shaped design has the self-tapping property of the alveolar bone 5 (meaning that it can cut the alveolar bone 5 by itself during the implantation process), and the head end of the retaining screw 2 is provided with an internal hexagonal groove for tightening the screw, and the thread on the outer wall of the screw rod of the retaining screw 2 matches the thread on the inner wall of the internal thread bolt channel 13.

[0039] When installing the fixing screw 2, the threaded end of the fixing screw 2 is screwed into the interior of the short implant 1 from the entrance end of the internal thread bolt channel 13, and is screwed out from the exit end of the internal thread bolt channel 13 after passing through the short implant 1, and is screwed into the alveolar bone 5 to be fixedly connected to the alveolar bone 5. The head end of the fixing screw 2 is completely screwed into the internal thread bolt channel 13, and remains inside the short implant 1 and is fixedly connected to the short implant 1. The fixing screw 2 can be fixed with the short implant 1 and form a whole, which increases the contact area between the short implant 1 and the alveolar bone 5, and the fixing screw 2 and the short implant 1 form a cross-locking knot inside the alveolar bone 5, which can increase the retention force between the short implant 1 and the alveolar bone 5 and increase the retention rate of the short implant 1. After the V-shaped threaded end of the fixing screw 2 passes through the short implant 1, it self-taps the alveolar bone 5 on one side of the short implant 1, and the part that enters the alveolar bone 5 forms the side wall auxiliary root of the short implant 1, which can disperse the lateral jaw force and avoid stress concentration. In this embodiment, the implant 12 of the short implant 1 is the part implanted into the alveolar bone, which serves as the root of the implanted tooth. The retaining screw 2 obliquely penetrates the short implant 1 and serves as the secondary root of the implanted tooth.

[0040] like Figure 7 As shown, the repair base 3 is a hollow structure tightly wrapping around the retaining body 11, and two retaining columns matching the retaining grooves 101 are symmetrically arranged on the inner wall thereof at the position in contact with the top of the retaining body 11. The repair base 3 is bonded to the retaining body 11, wherein the two retaining columns on the inner wall of the repair base 3 are respectively embedded in the two retaining grooves 101 of the retaining body 11. Due to the meshing relationship between the retaining grooves 101 and the retaining columns, the repair base 3 will not rotate under the action of external force, thereby effectively preventing the relative movement between the repair base 3 and the retaining body 11.

[0041] The repair base 3 includes a gingival portion 31 and a crown retaining portion 32 . The end of the repair base 3 that contacts the gum 4 is the gingival portion 31 , and the end of the repair base 3 that connects to the implanted crown is the crown retaining portion 32 .

[0042] After the repair base 3 is bonded to the retainer 11, the gingival portion 31 is installed in the gums 4 between the alveolar bone wall and the gum edge, and its lower end contacts the bone wall of the alveolar bone 5, and the upper end contacts the gum edge. The end of the gingival portion 31 connected to the crown retaining portion 32 is provided with a crown edge base 301. When the implant crown is installed, the crown edge base 301 abuts against the implant crown. The gingival portion 31 is truncated cone-shaped, and the diameter of the end contacting the alveolar bone wall is smaller than the diameter of the end contacting the gum edge. After the repair base 3 is bonded to the retainer 11, the diameter of the gingival portion 31 gradually increases from the alveolar bone wall to the gum edge. The diameter of the crown edge base 301 at the upper end of the gingival portion 31 is the maximum diameter set within a reasonable range (i.e., within the range that the gums 4 can bear), which can prevent the gap between the gingival portion 31 and the gum edge after repair and cause food to remain. The crown retaining part 32 is arranged outside the gum 4 and is cylindrical. The diameter of the crown edge base 301 is larger than the diameter of the gingival part 31. In this embodiment, the edge of the crown retaining part 32 is 0.5 mm different from the edge of the crown edge base 301 in the gingival part 31.

[0043] After the restoration base 3 is bonded to the retainer 11, the gingival portion 31 passes through the gums 4 from the edge of the alveolar bone wall and wraps around the lower end of the retainer 11 until the gingival edge; the crown retaining portion 32 wraps around the upper end of the retainer 11 from the gingival edge, and its wrapped portion includes the surrounding and top of the upper end of the retainer 11.

[0044] The restoration base 3 is installed between the short implant 1 and the implant crown, and is used to connect the short implant 1 and the implant crown. In this embodiment, a truncated cone-shaped gingival penetration part 31 is added to the design of the restoration base 3. The shape of the restoration base 3 matches the specific implant crown, which can expand the gingival margin and better support and fix the implant crown.

[0045] The repair base 3 is bonded to the retainer 11 of the short implant 1, and during the bone-integration healing period, the fixing screw opening on the alveolar bone 5 for installing the implant 12 can be closed, and the micro-gap between the implant 12 and the alveolar bone 5 is blocked from communicating with the outside world, which is conducive to bone-integration healing. The gingival-penetrating part 31 of the repair base 3 is a truncated cone, and the diameter gradually increases from the alveolar bone wall to the gingival edge, which increases the diameter width of the repair base 3 after the gingival penetration, and can make the gingiva 4 abduct, avoiding the problem of food retention due to the narrow neck and wide jaw face after subsequent implant crown repair. After installation, the repair base 3 can fit tightly with the gingival edge to avoid black lines on the gingival edge, and the preferred solution of this embodiment adopts a zirconia repair base, and the zirconia surface after sintering and polishing is not easy to colonize bacteria, reducing the occurrence of peri-implantitis.

[0046] This embodiment uses a one-stage short implant dental implant retention device to fix the dental implant. The specific installation process is as follows:

[0047] Take oral CBCT of the patient in occlusal position to obtain various data of alveolar bone 5 and gum 4, including alveolar bone volume and jaw-gingival distance, etc., and determine the implant site and implant data based on these data. The implant data includes implant length, implant diameter, gingival height and the most suitable diameter of the restoration abutment on the gingival surface. According to the implant data, select the appropriate short implant 1, retention screw 2 and restoration abutment 3. Among them, the retention screw 2 includes two models with a diameter of 1.5 mm and a diameter of 2 mm. The corresponding model is selected according to the determined implant data (select the retention screw 2 with a small diameter if the implant diameter is small).

[0048] The gums 4 at the implant site are cut open to expose the alveolar bone 5, and an implant hole of appropriate size is drilled on the alveolar bone 5 according to the diameter of the implant 12 in the short implant 1. The implant 12 part of the short implant 1 is implanted into the alveolar bone 5 through the implant hole, and the retainer 11 part of the short implant 1 remains outside the alveolar bone 5. A portion of the alveolar bone 5 with thicker bone and higher bone density around the short implant 1 is selected as the secondary root site of the short implant 1 (i.e., a site suitable for screwing the retaining screw 2 into), and the secondary root length (i.e., the depth of the retaining screw 2 screwed into the secondary root site) is determined according to the bone volume of the secondary root site, and the position of the short implant 1 is fine-tuned so that the port of the inner thread bolt channel 13 on the side wall of the implant 12 faces the secondary root site, and the threaded end of the retaining screw 2 passes through the inner thread bolt channel 13 and is screwed into the alveolar bone 5 at the secondary root site. Preferably, the screwing depth is not less than 1.5 mm, and the torque is not less than 35 Newtons. The head end of the retaining screw 2 is completely screwed into the inner thread bolt channel 13 and is threadedly connected to the inner thread bolt channel 13. The retaining screw 2 is used as the secondary root of the short implant 1. After the retaining screw 2 is installed, it forms a cross-locking knot with the short implant 1 inside the alveolar bone 5, and the cross-locking knot firmly fixes the short implant 1 in the alveolar bone 5.

[0049] Since the implant in this embodiment is a one-piece short implant (i.e., the repair base 3 and the short implant 1 are a whole), the repair base 3 needs to be installed at the same time in the step of implanting the short implant 1. After the installation of the fixing screw 2 is completed, the stability of the short implant 1 is detected. After confirming that it is stable and not loose, the repair base 3 is bonded with a dual-curing resin so that it is tightly wrapped around the retainer 11. In this embodiment, a zirconium oxide repair base is suitable. The gingival part 31 of the repair base 3 is installed in the gingiva 4 between the alveolar bone wall and the gingival edge. Its lower end contacts the bone wall of the alveolar bone 5, and the upper end contacts the gingival edge. The diameter of the gingival part 31 gradually increases from the alveolar bone wall to the gingival edge. This diameter is the most suitable diameter for the repair base determined in the above implant data. The crown retention part 32 of the repair base 3 is located outside the gingiva 4. After the one-piece short implant is implanted, the gingiva 4 is sutured and bone bonding is waited. After the bone union has healed, a crown is made and mounted on the restoration base 3 to complete the restoration process of the implant.

[0050] In the present invention, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connect" can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] The shapes of the various components in the drawings are schematic, and certain differences from their actual shapes are not excluded. The drawings are only used to illustrate the principles of the present invention and are not intended to limit the present invention.

[0052] Although the utility model is disclosed in detail with reference to the accompanying drawings, it should be understood that these descriptions are merely exemplary and are not intended to limit the application of the utility model. The protection scope of the utility model is defined by the appended claims and may include various modifications, alterations and equivalents made to the utility model without departing from the protection scope and spirit of the utility model.

Claims

1. A one-piece short implant dental implant retention device, characterized in that: The retention device comprises: a short implant (1), a retention screw (2) and a repair base (3); One end of the short implant (1) is installed in the alveolar bone, and the other end is arranged outside the alveolar bone and connected to the repair base (3); an internal thread bolt channel (13) is arranged inside the short implant (1), and the internal thread bolt channel (13) obliquely penetrates the short implant (1); one end of the retaining screw (2) is implanted in the alveolar bone through the internal thread bolt channel (13), and the other end is arranged in the internal thread bolt channel (13) and connected to the internal thread bolt channel (13); the repair base (3) is connected to the implant crown.

2. The one-piece short implant dental implant retention device according to claim 1, characterized in that: One end of the short implant (1) is a retainer (11), and the other end is an implant (12); the implant (12) is installed in the alveolar bone, and the retainer (11) is arranged outside the alveolar bone; the diameter of the implant (12) is greater than the diameter of the retainer (11).

3. The one-piece short implant dental implant retention device according to claim 2, characterized in that: The inlet end of the inner thread bolt channel (13) is arranged on the side wall of the retainer (11), the outlet end of the inner thread bolt channel (13) is arranged on the side wall of the implant (12), and the inner thread bolt channel (13) passes through the center of the short implant (1).

4. The one-piece short implant dental implant retention device according to claim 1, characterized in that: A thread is arranged on the inner wall of the inner thread bolt channel (13), and the thread matches the thread on the outer wall of the retaining screw (2).

5. The one-piece short implant dental implant retention device according to claim 4, characterized in that: The threaded end of the retaining screw (2) passes through the internal thread bolt channel (13) through the entrance end and the exit end of the internal thread bolt channel (13), and is screwed into the alveolar bone on one side of the implant (12) to be fixedly connected to the alveolar bone. The head end of the retaining screw (2) is completely screwed into the internal thread bolt channel (13) to be threadedly connected to the short implant (1). The retaining screw (2) serves as a secondary root of the short implant (1) and forms a cross-locking knot with the short implant (1) inside the alveolar bone.

6. The one-piece short implant dental implant retention device according to claim 1, characterized in that: The restoration base (3) comprises a gingival portion (31) and a crown retaining portion (32); The gingival penetration part (31) is installed in the gingiva between the alveolar bone wall and the gingival edge, the lower end of the gingival penetration part (31) contacts the bone wall of the alveolar bone, and the upper end contacts the gingival edge, the crown retaining part (32) is arranged outside the gingiva, and the crown retaining part (32) is connected to the implant crown.

7. The one-piece short implant dental implant retention device according to claim 6, characterized in that: A crown edge base (301) is provided at one end of the gingival portion (31) that contacts the gingival edge, and the crown edge base (301) abuts against the implant crown; The diameter of the end of the gingival penetration portion (31) in contact with the alveolar bone wall is smaller than the diameter of the end in contact with the gingival edge, the diameter of the crown edge base (301) is the maximum diameter within the range that the gingiva can bear, and the diameter of the crown edge base (301) is larger than the diameter of the crown retention portion (32).

8. The one-piece short implant dental implant retention device according to claim 2, characterized in that: Two retaining grooves (101) are symmetrically arranged on the upper end of the retaining body (11); two retaining columns matching the retaining grooves (101) are symmetrically arranged on the inner wall of the repair base (3) at positions in contact with the upper end of the retaining body (11); the repair base (3) is bonded to the retaining body (11), wherein the two retaining columns on the inner wall of the repair base (3) are respectively embedded in the two retaining grooves (101) of the retaining body (11).

9. The one-piece short implant dental implant retention device according to claim 1, characterized in that: The repair base (3) is made of zirconium oxide material.

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