Bonding-free multifunctional abutment, dental implant with same and use method of dental implant

Abstract

The invention discloses a bonding-free multifunctional abutment, a dental implant with the same and a use method of the dental implant. The abutment comprises an expandable connecting part, a central connecting part and a fixed connecting part which are sequentially arranged from top to bottom, the expandable connecting part of the abutment is provided with a plurality of rebounding side walls, the rebounding side walls are opened or closed under the action of the repairing screws, and when the rebounding side walls are opened, the rebounding side walls abut against the inner side walls of the healing scanning piece, the temporary dental crown or the permanent dental crown so that the healing scanning piece, the temporary dental crown or the permanent dental crown can be stably installed; no adhesive is needed, and the operation method is simple, convenient and rapid. In the implanting process, the abutment does not need to be taken down after being installed, surgical operation steps are reduced, the simple operation method of the abutment also simplifies the surgical process, and the pain of a patient is reduced. The abutment and the dental crown do not need to be bonded by using an adhesive, so that the surgical risk caused by the adhesive is avoided, and the success rate of the implant surgery is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of dental implants, and particularly relates to a non-bonding multi-functional abutment, a dental implant having the abutment, and a using method thereof. Background Art

[0002] A denture is an artificial tooth that replaces a missing natural tooth. It is a prosthesis made after partial or complete loss of the upper and lower teeth, including a base and a dental crown.

[0003] Due to the advantages of firmness, durability, convenience, comfort, aesthetics, etc. of dental implants, and without damaging adjacent teeth, dental implants are favored by people. The surgical process of dental implants is as follows: implant the implant into the alveolar bone and install the closure cap; remove the closure cap and replace it with a healing cap after 3 weeks; after osseointegration is completed, remove the healing cap and replace it with a transfer rod for impression taking or replace it with a scanning rod for digital impression taking; after impression taking is completed, reinstall the healing cap; remove the healing cap after 2 weeks, install the abutment, and apply an adhesive on the surface of the abutment to ensure a tight bond between the dental crown and the abutment.

[0004] Traditional dental implants use too many accessories, resulting in a long surgical cycle and a complex implant restoration process. Patients need to go to the hospital multiple times to replace accessories. Moreover, since an adhesive is used to bond the abutment and the dental crown during the implant surgery, if the adhesive is not cleaned thoroughly, it will cause periodontal lesions and ultimately lead to the failure of the implant surgery. Summary of the Invention

[0005] In view of this, it is necessary to provide a non-bonding multi-functional abutment with a firm structure and simple operation, a dental implant having the abutment, and a using method thereof.

[0006] A non-bonding multi-functional abutment includes a expandable connection part, a central connection part, and a fixed connection part which are arranged in sequence from top to bottom; the expandable connection part has a plurality of resilient side walls, and the upper half of the inner side wall of the expandable connection part adopts a conical structure, and the conical structure is used to cooperate with a repair screw to fixedly install a dental crown and a healing scanner; the fixed connection part has at least one first positioning plane; the central connection part includes an installation platform, and at least one convex part is arranged on the installation platform, and the position of the convex part corresponds to the position of the first positioning plane of the fixed connection part, and the convex part is used for the installation positioning of the dental crown and the healing scanner.

[0007] Preferably, the expandable connection part is in a hollow barrel shape, and a plurality of evenly distributed lower grooves are arranged on the side wall of the expandable connection part. The depth direction of the lower grooves is the same as the axial direction of the expandable connection part, and the plurality of lower grooves divide the expandable connection part into a plurality of the resilient side walls arranged in a circular arrangement.

[0008] Preferably, the outer sidewall of the expandable connecting portion is cylindrical, the upper half of the inner sidewall of the expandable connecting portion has a tapered inclined surface, and the lower half of the inner sidewall of the expandable connecting portion has an internal thread; the repair screw includes a spiral connecting portion and an inverted conical platform provided above the spiral connecting portion. When the repair screw is screwed into the expandable connecting portion, the inverted conical platform fits and presses against the tapered inclined surface, causing the plurality of resilient sidewalls to expand outward; after removing the repair screw, the plurality of resilient sidewalls rebound to their original positions; The mounting platform of the central connecting portion is connected to the bottom of the expandable connecting portion, and a plurality of the protruding portions are evenly distributed at the connection between the mounting platform and the expandable connecting portion.

[0009] Preferably, the inner sidewall at the connection between the central connecting portion and the fixed connecting portion has an annular boss, and the annular boss is used to fixedly mount the abutment on the implant through a central screw.

[0010] And, an implant, including the non-bonding multi-functional abutment as described above. The implant further includes an implant body, a central screw, a repair screw, a healing scanner, and a dental crown; the central screw is used to fixedly mount the implant body and the abutment, and the repair screw is used to fixedly mount the healing scanner and the dental crown on the abutment.

[0011] Preferably, the repair screw includes a first screw head and a first screw rod. The first screw head adopts an inverted conical platform structure, and the slope of the outer sidewall of the first screw head is the same as the slope of the tapered inclined surface of the upper half of the inner sidewall of the expandable connecting portion of the abutment; the first screw rod has an external thread and is screwed onto the internal thread of the lower half of the inner sidewall of the expandable connecting portion of the abutment.

[0012] Preferably, the healing scanner includes a crown end and a plug-in end arranged in sequence from top to bottom. The healing scanner has a first installation through hole penetrating in its height direction. The shape of the first installation through hole corresponds to the shape of the expandable connecting portion of the abutment. The bottom surface of the plug-in end of the healing scanner is mounted on the mounting platform of the central connecting arm of the abutment. The inner sidewall of the plug-in end of the first installation through hole is provided with a concave portion, and the shape and height of the concave portion correspond to the shape and height of the protruding portion on the mounting platform; at least one positioning groove is provided on the top surface of the crown end of the healing scanner, and the position of the positioning groove corresponds to the position of the concave portion; The dental crown has a second installation through hole, and the structure of the second installation through hole is the same as the structure of the first installation through hole of the healing scanner.

[0013] Preferably, the implant has a mounting blind hole, the depth direction of the mounting blind hole is the same as the length direction of the implant, the lower half of the inner wall of the mounting blind hole has internal threads, and the upper half of the inner wall of the mounting blind hole has at least one second positioning plane, and the position and number of the second positioning planes correspond to the position and number of the first positioning planes of the fixed connection part of the abutment.

[0014] Preferably, the central screw includes a second screw head and a second screw rod connected in sequence from top to bottom. The diameter of the second screw head is larger than the inner diameter of the annular boss of the central connection part of the abutment, and the lower half of the second screw rod has external threads; the central screw is inserted into the abutment and tightened in the mounting blind hole of the implant to fixedly mount the abutment on the implant.

[0015] And, a method for using an implant tooth, for installing the implant tooth as described above, the method includes the following steps: Step 1, implant the implant into the alveolar bone, and fixedly mount the abutment on the implant through the central screw; Step 2, install the healing scanner on the abutment through the repair screw, perform intraoral scanning and impression taking, and produce a temporary crown; Step 3, perform intraoral scanning and impression taking again after gingival shaping; Step 4, loosen the repair screw, remove the healing scanner, and install the temporary crown; Step 5, after the permanent crown is produced, loosen the repair screw, remove the temporary crown, and install the permanent crown.

[0016] In the above non-bonding multi-functional abutment, the implant tooth having the abutment and its using method, the expandable connection part of the abutment has a plurality of resilient side walls, which open or close under the action of the repair screw. When the resilient side walls open, they abut against the inner walls of the healing scanner, the temporary crown or the permanent crown to stably install the healing scanner, the temporary crown or the permanent crown, without using an adhesive, and the operation method is simple and fast. During the implantation process, the abutment does not need to be removed after installation, reducing the surgical operation steps, and the simple operation method of the abutment also simplifies the surgical process and reduces the pain of the patient. Since there is no need to use an adhesive to bond the abutment and the crown, the surgical risks caused by the adhesive are avoided, and the success rate of the implantation surgery is improved. The method of the present invention is simple and easy to promote. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the non-bonding multi-functional abutment according to an embodiment of the present invention.

[0018] Figure 2 is a structural sectional view of the non-bonding multi-functional abutment according to an embodiment of the present invention.

[0019] Figure 3 This is an exploded view of the structure of an implant tooth with a non-bonding multi-functional abutment according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic structural view of a repair screw of an implant tooth with a non-bonding multi-functional abutment according to an embodiment of the present invention.

[0021] Figure 5 This is a schematic structural view of a healing scan of an implant tooth with a non-bonding multi-functional abutment according to an embodiment of the present invention.

[0022] Figure 6 This is a sectional view of the structure of a healing scan of an implant tooth with a non-bonding multi-functional abutment according to an embodiment of the present invention.

[0023] Figure 7 This is a schematic structural view of a central screw of an implant tooth with a non-bonding multi-functional abutment according to an embodiment of the present invention.

[0024] Figure 8 This is a schematic structural view of an implant body of an implant tooth with a non-bonding multi-functional abutment according to an embodiment of the present invention.

[0025] Figure 9 This is a sectional view of the structure of an implant body of an implant tooth with a non-bonding multi-functional abutment according to an embodiment of the present invention.

[0026] Figure 10 This is a schematic structural view of a dental crown of an implant tooth with a non-bonding multi-functional abutment according to an embodiment of the present invention.

[0027] Figure 11 This is a sectional view of the structure of a dental crown of an implant tooth with a non-bonding multi-functional abutment according to an embodiment of the present invention. Detailed implementation manners

[0028] In this embodiment, taking a non-bonding multi-functional abutment, an implant tooth with such an abutment, and its usage method as examples, the present invention will be described in detail below in conjunction with specific embodiments and drawings.

[0029] And, please refer to Figure 1 and Figure 2, showing a non-bonding multi-functional abutment 10, including a expandable connection part 11, a central connection part 12 and a fixed connection part 13 arranged in sequence from top to bottom; the expandable connection part 11 has a plurality of resilient side walls 112, and the upper half of the inner side wall of the expandable connection part 11 adopts a conical structure, and the conical structure is used to cooperate with the repair screw 20 to fixedly install the crown 60 and the healing scanner 30; the fixed connection part 13 has at least one first positioning plane 131; the central connection part 12 includes an installation platform 121, and at least one protrusion 122 is arranged on the installation platform 121, and the position of the protrusion 122 corresponds to the position of the first positioning plane 131 of the fixed connection part 13, and the protrusion 122 is used for the installation positioning of the crown 60 and the healing scanner 30.

[0030] Specifically, the middle part of the abutment 10 is the central connection part 12, the expandable connection part 11 is arranged above the central connection part 12, the fixed connection part 13 is arranged below the central connection part 12, and the expandable connection part 11, the central connection part 12 and the fixed connection part 13 are integrally formed.

[0031] Preferably, the expandable connection part 11 is in the shape of a hollow barrel, and a plurality of uniformly distributed lower grooves 113 are arranged on the side wall of the expandable connection part 11. The depth direction of the lower grooves 113 is the same as the axial direction of the expandable connection part 11, and the plurality of lower grooves 113 divide the expandable connection part 11 into a plurality of the resilient side walls 112 arranged in a circular pattern.

[0032] Specifically, the abutment 10 is made of titanium alloy, so that each of the resilient side walls 112 of the expandable connection part 11 has a resilient property.

[0033] Preferably, the outer side wall of the expandable connection part 11 is cylindrical, the upper half of the inner side wall of the expandable connection part 11 has a conical inclined surface 111, and the lower half of the inner side wall of the expandable connection part 11 has an internal thread; the repair screw 20 includes a spiral connection part and an inverted conical platform arranged above the spiral connection part. When the repair screw 20 is tightened into the expandable connection part 11, the inverted conical platform is attached to and squeezed by the conical inclined surface 111, so that the plurality of resilient side walls 112 expand outwards; after removing the repair screw 20, the plurality of resilient side walls 112 rebound to their original positions; The installation platform 121 of the central connection part 12 is connected to the bottom of the expandable connection part 11, and the plurality of protrusions 122 are uniformly distributed at the connection between the installation platform 121 and the expandable connection part 11.

[0034] Specifically, in this embodiment, two said convex portions 122 are provided on the said mounting platform 121, and the two said convex portions 122 are arranged on the same diameter of the said mounting platform 121.

[0035] Specifically, the shape and position of the said convex portion 122 correspond to the shape and position of the internal grooves of the dental crown 60 and the healing scan 30. In this embodiment, the internal grooves of the dental crown 60 and the healing scan 30 are arc-shaped or semi-circular. Therefore, the shape of the said convex portion 122 is an arc-shaped or semi-circular convex.

[0036] Preferably, the inner side wall at the connection of the said central connecting portion 12 and the said fixed connecting portion 13 has an annular boss 123, and the said annular boss 123 is used to fixedly install the said abutment 10 on the implant 50 through a central screw 40.

[0037] Specifically, the said central connecting portion 12 is the gingiva-penetrating portion of the said abutment 10, and the outer side wall of the said central connecting portion 12 includes an inverted conical body with different slopes at both ends to form a well-shaped gingiva-penetrating profile. The said central connecting portion 12 and the said fixed connecting portion 13 have a smooth inner side wall, and the said annular boss 123 is arranged on the inner side wall at the connection of the said central connecting portion 12 and the said fixed connecting portion 13. When installing the said abutment 10, the head of the central screw 40 is arranged above the said annular boss 123, and the external thread at the top of the screw rod portion of the central screw 40 is screwed tightly onto the internal thread of the implant 50, so that the said abutment 10 is fixedly installed on the implant 50.

[0038] And, please refer to Figure 3 , which shows an implant tooth, including the adhesive-free multi-functional abutment 10 as described above. The implant tooth further includes an implant 50, a central screw 40, a restoration screw 20, a healing scan 30, and a dental crown 60; the said central screw 40 is used to fixedly install the said implant 50 and the said abutment 10, and the said restoration screw 20 is used to fixedly install the said healing scan 30 and the said dental crown 60 on the said abutment 10.

[0039] Preferably, please refer to Figure 4 , the said restoration screw 20 includes a first screw head 21 and a first screw rod 22. The said first screw head 21 adopts an inverted conical platform structure, and the slope of the outer side wall of the said first screw head 21 is the same as the slope of the conical inclined surface 111 of the upper half of the inner side wall of the expandable connecting portion 11 of the said abutment 10; the said first screw rod 22 has an external thread and is screwed tightly onto the internal thread of the lower half of the inner side wall of the expandable connecting portion 11 of the said abutment 10.

[0040] Specifically, the overall height of the repair screw 20 is slightly shorter than the height of the expandable connecting portion 11 of the abutment 10. Among them, the height of the first screw head 21 is equivalent to the height of the conical structure on the upper half of the inner side wall of the expandable connecting portion 11 of the abutment 10, and the length of the first screw rod 22 is equivalent to the length of the internal thread on the lower half of the inner side wall of the expandable connecting portion 11 of the abutment 10. When the repair screw 20 is screwed into the expandable connecting portion 11 of the abutment 10, the outer side wall of the first screw head 21 presses the inner side wall of the expandable connecting portion 11, causing the plurality of resilient side walls 112 to open outward and abut against the inner side walls of the healing scan piece 30 and the dental crown 60, so that the healing scan piece 30 and the dental crown 60 are fixedly installed on the abutment 10.

[0041] Preferably, please refer to Figure 5 and Figure 6 , the healing scan piece 30 includes a crown end 31 and a plug end 32 arranged in sequence from top to bottom. The healing scan piece 30 has a first installation through hole 33 penetrating in its height direction. The shape of the first installation through hole 33 corresponds to the shape of the expandable connecting portion 11 of the abutment 10. The bottom surface of the plug end 32 of the healing scan piece 30 is installed on the installation platform 121 of the central connecting arm of the abutment 10. An inner concave portion 321 is provided on the inner side wall of the plug end 32 of the first installation through hole 33. The shape and height of the inner concave portion 321 correspond to the shape and height of the convex portion 122 on the installation platform 121; at least one positioning groove is provided on the top surface of the crown end 31 of the healing scan piece 30, and the position of the positioning groove corresponds to the position of the inner concave portion 321; Specifically, in this embodiment, the positioning grooves include a first positioning groove 311 and a second positioning groove 312. Among them, the first positioning groove 311 corresponds to the non-positioning surface at the bottom of the abutment, and the second positioning groove 312 corresponds to the positioning surface at the bottom of the abutment.

[0042] More specifically, the first positioning groove 311 and the second positioning groove 312 are also used as reference surfaces for matching with the software database after intraoral scanning.

[0043] Specifically, in other embodiments, the positioning grooves may adopt other shapes, such as strip-shaped, circular, semi-circular, etc. Different intervals and distribution angles are provided between the positioning grooves to identify different heights and diameters of the healing scan piece 30.

[0044] Please refer to Figure 10 and Figure 11 , the dental crown 60 has a second installation through hole 61, and the structure of the second installation through hole 61 is the same as the structure of the first installation through hole 33 of the healing scan piece 30.

[0045] Specifically, the diameter of the first mounting through-hole 33 of the healing scan 30 is slightly larger than the diameter of the expandable connecting portion 11 of the abutment 10. During installation, the healing scan 30 is sleeved on the top end of the abutment 10, and the expandable connecting portion 11 of the abutment 10 extends into the first mounting through-hole 33 of the healing scan 30, so that the concave portion 321 on the inner side wall of the first mounting through-hole 33 is aligned and snapped with the convex portion 122 on the mounting platform 121 of the central connecting portion 12 of the abutment 10. The repair screw 20 is tightened from the crown end 31 of the healing scan 30, and the first screw head 21 of the repair screw 20 presses the inner side wall of the expandable connecting portion 11 of the abutment 10, so that each of the resilient side walls 112 expands outward and abuts against the inner side wall of the first mounting through-hole 33 of the healing scan 30, so that the healing scan 30 is fixedly installed on the abutment 10, and the positioning groove 311 on the top surface of the crown end 31 of the healing scan 30 plays a role in scanning and positioning.

[0046] Specifically, the internal connection structure of the dental crown 60 is the same as that of the healing scan 30, so that the dental crown 60 can be fixedly installed on the abutment 10 in the same installation manner.

[0047] Specifically, the dental crown 60 includes a temporary dental crown 60 and a permanent dental crown 60, and the temporary dental crown 60 and the permanent dental crown 60 have the same internal installation structure, so that the installation operations of the temporary dental crown 60 and the permanent dental crown 60 during the surgical process are simple, fast and convenient.

[0048] Preferably, please refer to Figure 8 and Figure 9 , the implant 50 has a mounting blind hole 51, the depth direction of the mounting blind hole 51 is the same as the length direction of the implant 50, the lower half of the inner side wall of the mounting blind hole 51 has an internal thread, and the upper half of the inner side wall of the mounting blind hole 51 has at least one second positioning plane 511, and the position and number of the second positioning planes 511 correspond to the position and number of the first positioning planes 131 of the fixed connecting portion 13 of the abutment 10.

[0049] Preferably, please refer to Figure 7 , the central screw 40 includes a second screw head 41 and a second screw rod 42 connected in sequence from top to bottom, the diameter of the second screw head 41 is larger than the inner diameter of the annular boss 123 of the central connecting portion 12 of the abutment 10, and the lower half of the second screw rod 42 has an external thread; the central screw 40 is inserted into the abutment 10 and tightened into the mounting blind hole 51 of the implant 50 to fixedly install the abutment 10 on the implant 50.

[0050] Specifically, the shape of the upper half of the inner wall of the installation blind hole 51 of the implant 50 corresponds to the shape of the outer wall of the fixed connection part 13 of the abutment 10.

[0051] Specifically, the interface between the implant 50 and the abutment 10 is divided into a conical shape, a keyway shape, a quadrilateral shape, a triangular shape, a pentagonal shape, a hexagonal shape, an octagonal shape, a plum blossom shape, etc. according to its connection structure. The structure of the fixed connection part 13 of the abutment 10 is the same as that of the upper half of the inner wall of the installation blind hole 51 of the implant 50, so that the abutment 10 and the implant 50 are more firmly connected as a whole.

[0052] Specifically, when installing the abutment 10, the fixed connection part 13 of the abutment 10 is inserted into the installation blind hole 51 of the implant 50, and the first positioning plane 131 of the fixed connection part 13 of the abutment 10 corresponds to the second positioning plane 511 of the inner wall of the installation blind hole 51 of the implant 50. The central screw 40 is inserted through the abutment 10, the second screw head 41 of the central screw 40 abuts against the annular boss 123 of the central connection part 12 of the abutment 10, and the external thread on the lower half of the second screw rod 42 of the central screw 40 is screwed onto the internal thread on the inner wall of the installation blind hole 51 of the implant 50 to fixedly install the abutment 10 on the implant 50.

[0053] Specifically, the outer wall of the implant 50 has a self-tapping thread, so that the implant 50 can be fixedly installed on the alveolar bone.

[0054] And, a method for using an implant tooth, for installing the implant tooth as described above, the method includes the following steps: Step 1, implant the implant 50 into the alveolar bone, and fixedly install the abutment 10 on the implant 50 through the central screw 40; Step 2, install the healing scanner 30 on the abutment 10 through the repair screw 20, perform intraoral scanning and impression taking, and produce a temporary crown 60; Step 3, perform intraoral scanning and impression taking again after gingival shaping; Step 4, loosen the repair screw 20, remove the healing scanner 30, and install the temporary crown 60; Step 5, after the permanent crown 60 is produced, loosen the repair screw 20, remove the temporary crown 60, and install the permanent crown 60.

[0055] Specifically, when installing the healing scan 30, the temporary crown 60, and the permanent crown 60, simply loosen the repair screw 20 to enable the resilient sidewall 112 of the abutment 10 to return to its original position, and then the healing scan 30, the temporary crown 60, and the permanent crown 60 can be removed without removing the abutment 10.

[0056] Specifically, the implant 50 is implanted during the first surgery and the abutment 10 is fixedly installed, and thereafter the abutment 10 does not need to be removed again. The operation methods for installing and removing the healing scan 30, the temporary crown 60, and the permanent crown 60 are simple, reducing the number of surgeries for the patient. At the same time, the surgical operation steps are also simplified, reducing the pain of the patient.

[0057] In the above-mentioned non-bonding multi-functional abutment 10, the dental implant having the abutment 10, and its usage method, the expandable connecting portion 11 of the abutment 10 has a plurality of resilient sidewalls 112, which open or close under the action of the repair screw 20. When the resilient sidewalls 112 open, they abut against the inner sidewalls of the healing scan 30, the temporary crown 60, or the permanent crown 60 to stably install the healing scan 30, the temporary crown 60, or the permanent crown 60 without using an adhesive, and the operation method is simple and fast. During the implantation process, the abutment 10 does not need to be removed after installation, reducing the surgical operation steps. Moreover, the simple operation method of the abutment 10 also simplifies the surgical process and reduces the pain of the patient. Since there is no need to use an adhesive to bond the abutment 10 and the crown 60, the surgical risks caused by the adhesive are avoided, and the success rate of the implantation surgery is improved. The method of the present invention is simple and easy to promote.

[0058] It should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A bonding-free multifunctional base, characterized in that: It includes an expandable connection part, a central connection part and a fixed connection part which are arranged in sequence from top to bottom; the expandable connection part has a plurality of resilient side walls, the upper half of the inner side wall of the expandable connection part adopts a conical structure, and the conical structure is used in conjunction with a repair screw to fix and install a crown and a healing scan piece; the fixed connection part has at least one first positioning plane; the central connection part includes a mounting platform, and the mounting platform has at least one protrusion, the position of the protrusion corresponds to the position of the first positioning plane of the fixed connection part, and the protrusion is used for the installation and positioning of the crown and the healing scan piece.

2. The bonding-free multifunctional base according to claim 1, characterized in that: The expandable connection part is in the shape of a hollow barrel, and a plurality of evenly spaced lower grooves are provided on the side walls of the expandable connection part. The depth direction of the lower grooves is the same as the axial direction of the expandable connection part. The plurality of lower grooves divide the expandable connection part into a plurality of circularly arranged resilient side walls.

3. The bonding-free multifunctional base according to claim 2, characterized in that: The outer wall of the expandable connection part is cylindrical, the upper half of the inner wall of the expandable connection part has a conical slope, and the lower half of the inner wall of the expandable connection part has an internal thread; the repair screw includes a spiral connection part and an inverted cone-shaped platform arranged above the spiral connection part, when the repair screw is tightened into the expandable connection part, the inverted cone-shaped platform is attached to and squeezed with the conical slope, so that the multiple resilient side walls expand outward; after the repair screw is removed, the multiple resilient side walls rebound to their original positions; The mounting platform of the central connecting part is connected to the bottom of the expandable connecting part, and a plurality of the protrusions are evenly distributed at the connection between the mounting platform and the expandable connecting part.

4. The bonding-free multifunctional base according to claim 1, characterized in that: The inner side wall of the connection between the central connection part and the fixed connection part has an annular boss, and the annular boss is used to fix the base on the implant through a central screw.

5. A dental implant, comprising the bonding-free multifunctional abutment according to any one of claims 1 to 4, characterized in that: The dental implant also includes an implant, a central screw, a repair screw, a healing scan and a crown; the central screw is used to fix the implant and the base, and the repair screw is used to fix the healing scan and the crown on the base.

6. The dental implant according to claim 5, characterized in that: The repair screw includes a first screw head and a first screw rod. The first screw head adopts an inverted conical platform structure. The slope of the outer wall of the first screw head is the same as the slope of the conical slope of the upper half of the inner wall of the expandable connecting part of the base. The first screw rod has an external thread and is tightened on the internal thread of the lower half of the inner wall of the expandable connecting part of the base.

7. The dental implant according to claim 5, characterized in that: The healing scanning piece comprises a crown end and a plug-in end which are sequentially arranged from top to bottom, the healing scanning piece has a first mounting through hole which runs through the height direction thereof, the shape of the first mounting through hole corresponds to the shape of the expandable connecting portion of the base, the bottom surface of the plug-in end of the healing scanning piece is mounted on the mounting platform of the central connecting arm of the base, the inner side wall of the plug-in end of the first mounting through hole is provided with an inner recess, the shape and height of the inner recess correspond to the shape and height of the protrusion on the mounting platform; the top surface of the crown end of the healing scanning piece is provided with at least one positioning groove, the position of the positioning groove corresponds to the position of the inner recess; The dental crown has a second mounting through hole, and the structure of the second mounting through hole is the same as the structure of the first mounting through hole of the healing scanning component.

8. The dental implant according to claim 5, wherein: The implant has a mounting blind hole, the depth direction of the mounting blind hole is the same as the length direction of the implant, the lower half of the inner side wall of the mounting blind hole has an internal thread, and the upper half of the inner side wall of the mounting blind hole has at least one second positioning plane, and the position and number of the second positioning planes correspond to the position and number of the first positioning planes of the fixed connection part of the base.

9. The dental implant according to claim 8, wherein: The central screw includes a second screw head and a second screw rod connected in sequence from top to bottom, the diameter of the second screw head is larger than the inner hole diameter of the annular boss of the central connecting part of the base, and the lower half of the second screw rod has an external thread; the central screw is passed through the inside of the base and tightened in the mounting blind hole of the implant to fix the base on the implant.

10. A method for using a dental implant to install the dental implant according to any one of claims 5 to 9, characterized in that: The method comprises the following steps: Step 1: implant the implant into the alveolar bone and fix the abutment on the implant with a central screw; Step 2: Install the healing scan on the abutment through the repair screw, perform intraoral scanning and impression, and produce a temporary crown; Step 3: After the gums are formed, intraoral scanning and impression taking are performed again; Step 4: Loosen the repair screws, remove the healing scan, and install the temporary crown; Step 5. After the permanent crown is produced, loosen the restoration screws, remove the temporary crown, and install the permanent crown.

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