Tooth root removal

Abstract

The present invention provides a tooth root extraction elevator, which relates to the technical field of oral medical instruments, and comprises a gripping part, a connecting part and an ejecting part; the gripping part is connected to the ejecting part through the connecting part, and the gripping part is convenient for transmitting force through the connecting part; the connecting part and the ejecting part are arranged at an obtuse angle, so when the ejecting part acts on the residual root, broken root or residual crown, the excessive pulling on the corners of the patient's mouth is reduced, and the risk of straining or tearing the corners of the mouth is reduced, thereby strengthening the protection of the corners of the mouth, and embodying the "love injury concept"; the inner concave part is provided with an arc groove, so that it can more smoothly reach the root bifurcation of the neck of the residual crown or the root surface near the root of the residual root and the broken root, or even the root apex, reducing the waste of time for flap bone removal and excessive damage to soft tissue, embodying the "minimally invasive concept", eliminating the difficulty that the tooth root extraction elevator cannot fit the root shape, and alleviating the technical problem in the prior art that the tooth elevator cannot accurately apply force, resulting in accidental injury and extraction failure.

Description

Technical Field

[0001] The invention relates to the technical field of oral medical instruments, in particular to a tooth root removal elevator. Background Art

[0002] There are generally two situations when tooth roots remain in the gums: 1. Residual roots: one is the residual roots left after tooth decay. For the residual roots, there are often inflammation and granulation tissue, and they should be removed in time; 2. Broken roots: mostly refer to fresh broken roots that occur during surgery, which are due to anatomical variations of the roots (such as hypertrophic roots, bent roots, etc.) or pathological factors (such as adhesion of the roots to the alveolar socket bones, internal or external absorption of the roots, etc.), or technical problems during tooth extraction that cause root fractures.

[0003] In the prior art, part of the front teeth or back teeth, part of the residual crown or residual root is generally extracted by a dental elevator, or extracted by dental forceps or residual root forceps.

[0004] However, the following problems are often encountered when removing residual roots: if ordinary dental elevators are selected for routine extraction, the residual crown or root cannot be removed by wedging and rotational force; using leverage force will compress the alveolar bone, leading to local microfractures or aggravating late absorption; using backwash force often causes excessive pulling of the corners of the mouth due to straight elevators, and the dental elevator cannot fit the root shape, leading to accidental injury and extraction failure; when using dental forceps or residual root pliers, extraction failure is often caused by the inability to clamp the residual crown or root. Summary of the invention

[0005] The purpose of the present invention is to provide a tooth root extraction elevator to alleviate the technical problem in the prior art that the tooth elevator cannot be used accurately, resulting in the tooth elevator being unable to fit the root shape, leading to accidental injury and extraction failure.

[0006] The embodiment of the present invention is achieved as follows:

[0007] The tooth root extraction elevator provided by the present invention comprises: a holding portion, a connecting portion and an ejecting portion;

[0008] The gripping part is connected to the protruding part through the connecting part, and the connecting part and the protruding part are arranged at an obtuse angle to reduce the pressure of the connecting part on the residual crown tooth neck or the corner of the mouth, the alveolar bone and the gingival soft tissue;

[0009] An inner recess is provided at one end of the protruding portion away from the connecting portion, and an arc groove is provided in the inner recess so that the protruding portion can pass through the inner recess to press into the root bifurcation of the residual crown tooth neck or the middle and root apex of the residual root and the root surface of the broken root.

[0010] In a preferred embodiment of the present invention, the protruding portion includes an inner concave portion and a supporting portion;

[0011] The supporting portion includes a connecting end and an extending end, the connecting end is connected to the connecting portion, the inner recess is located at the extending end, and the thickness from the connecting end to the extending end decreases sequentially.

[0012] In a preferred embodiment of the present invention, the support portion is provided with a protruding groove, and the protruding groove is extended from the extending end to the connecting end.

[0013] In a preferred embodiment of the present invention, the inner recess includes a first recess and a second recess;

[0014] The first recessed portion and the second recessed portion are respectively arranged on both sides of the supporting portion, the first recessed portion is used to observe the position of the protruding portion placed at the tooth root, and the second recessed portion is used to press into the root bifurcation of the residual crown tooth neck or the middle and root apex of the residual root and the root surface of the broken root;

[0015] A connecting line between the first recessed portion and the second recessed portion close to the extending end is in the shape of the circular arc groove.

[0016] In a preferred embodiment of the present invention, the radius range of the arc groove is between the first concave line and the second concave line;

[0017] The first concave line is an arc drawn along the line connecting the two ends of the extension end as the base of the equilateral triangle, with the other vertex of the equilateral triangle as the center and the side length of the equilateral triangle as the radius;

[0018] The second concave line is an arc line with the midpoint of the line connecting the two ends of the extension end as the center and half of the line connecting the two ends of the extension end as the radius.

[0019] In a preferred embodiment of the present invention, both side end points of the extension end are smoothly transitioned through rounded corners.

[0020] In a preferred embodiment of the present invention, the angle between the connecting portion and the protruding portion ranges from 135° to 180°.

[0021] In a preferred embodiment of the present invention, the gripping portion is in the form of a prism.

[0022] In a preferred embodiment of the present invention, a gripping groove is provided along the circumferential direction of the gripping portion.

[0023] In a preferred embodiment of the present invention, the cross-sectional diameter of the connecting portion gradually decreases from one end close to the gripping portion to the other end.

[0024] The beneficial effects of the embodiments of the present invention are:

[0025] The tooth root extraction lifter provided by the present invention comprises: a gripping part, a connecting part and a protruding part; the gripping part is connected to the protruding part through the connecting part, and the connecting part and the protruding part are arranged at an obtuse angle to reduce the pressure of the connecting part on the residual crown tooth neck or the corner of the mouth, the alveolar bone and the gingival soft tissue; an inner concave part is arranged at one end of the protruding part away from the connecting part, and the inner concave part is arranged with an arc groove, so that the protruding part can be pressed into the root bifurcation of the residual crown tooth neck or the root middle and root apex of the residual root and the root surface of the broken root through the inner concave part; the gripping part is convenient for the operator to hold and operate, and then the force is transmitted through the connecting part, and the connection part is arranged at an obtuse angle to reduce the pressure of the connecting part on the residual crown tooth neck or the corner of the mouth, the alveolar bone and the gingival soft tissue; the protruding part is convenient for the operator to hold and operate, and the connection part is convenient for the transmission of force, and the connection part is arranged at an obtuse angle to reduce the pressure of the connecting part on the residual crown tooth neck or the corner of the mouth, the alveolar bone and the gingival soft tissue When the protruding part acts on the tooth root, it reduces excessive traction on the patient's mouth corners, reduces the risk of straining or tearing the mouth corners, thereby strengthening the protection of the mouth corners, reflecting the "love injury concept"; the arc groove is arranged on the inner concave part, so that it can more smoothly reach the root bifurcation of the residual crown neck or the root surface near the residual root and the broken root or even the root apex, reducing the waste of time for flap opening and bone removal and excessive damage to soft tissue, reflecting the "minimally invasive concept", eliminating the difficulty that the tooth root extraction elevator cannot fit the root shape, and alleviating the technical problems in the prior art that the tooth elevator cannot accurately apply force, resulting in accidental injury and extraction failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the structure of a tooth root removal elevator provided in an embodiment of the present invention;

[0028] Figure 2 A schematic diagram of the front structure of the protrusion portion of the tooth root extraction protrusion provided by an embodiment of the present invention;

[0029] Figure 3 A schematic diagram of the back structure of the protruding portion of the tooth root extraction protrusion provided by an embodiment of the present invention;

[0030] Figure 4 Another front structural schematic diagram of the protruding portion of the tooth root extraction lift provided by the embodiment of the present invention;

[0031] Figure 5 Another schematic diagram of the back structure of the protruding portion of the tooth root extraction lift provided in an embodiment of the present invention.

[0032] Icon: 100-holding part; 101-holding groove; 200-connecting part; 300-protruding part; 301-recessed part; 311-first concave line; 321-second concave line; 331-first recessed part; 341-second recessed part; 302-supporting part; 312-connecting end; 322-extension end; 332-protruding groove; 400-first endpoint; 500-second endpoint; 600-first center of circle; 700-second center of circle. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0037] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0038] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0040] Figure 1 This is a schematic structural diagram of the tooth root extraction elevator provided in this embodiment; wherein the holding portion 100 is connected to the ejection portion 300 via the connecting portion 200 .

[0041] Figure 2 A schematic diagram of the front structure of the protruding portion of the tooth root extraction lift provided in this embodiment; wherein, the radius of the arc groove is the first concave line 311, and the first recessed portion 331 is located on the front of the supporting portion 302, and the first recessed portion 331 can make it easier to observe the position of the protruding portion 300 placed at the tooth root.

[0042] Figure 3 A schematic diagram of the back structure of the protruding portion of the root extraction lift provided in this embodiment; wherein, the radius of the arc groove is the first concave line 311, and the second recessed portion 341 is located on the back of the supporting portion 302, and the second recessed portion 341 can be inserted into the root bifurcation of the residual crown cervical region or the root middle and root apex of the residual root and the root surface of the broken root.

[0043] Figure 4 Another front structural schematic diagram of the protruding portion of the tooth root extraction lifter provided in this embodiment; wherein the radius of the arc groove is the second concave line 321, and the first recessed portion 331 is located on the front side of the supporting portion 302.

[0044] Figure 5 Another schematic diagram of the back structure of the protruding portion of the tooth root extraction lift provided in this embodiment, wherein the radius of the arc groove is the second concave line 321 , and the second concave portion 341 is located on the back of the supporting portion 302 .

[0045] like Figure 1-5As shown, a tooth root extraction elevator provided in this embodiment includes: a holding portion 100, a connecting portion 200 and a protruding portion 300; the holding portion 100 is connected to the protruding portion 300 through the connecting portion 200, and the connecting portion 200 and the protruding portion 300 are arranged at an obtuse angle to reduce the pressure of the connecting portion 200 on the neck of the residual crown tooth or the corner of the mouth, the alveolar bone and the gingival soft tissue; an inner recess 301 is provided at one end of the protruding portion 300 away from the connecting portion 200, and the inner recess 301 is provided with an arc groove, so that the protruding portion 300 can pass through the inner recess 301 to press into the root bifurcation of the neck of the residual crown tooth or the middle and apex of the root of the residual root and the root surface of the broken root.

[0046] The holding portion 100 may be of various types, such as an operating handle, an operating rod, or an operating piece, etc. Preferably, the holding portion 100 is an operating handle.

[0047] Specifically, the gripping portion 100 is an operating handle that is semicircular at one end and hexahedral in the middle, and whose diameter gradually decreases from one end away from the connecting portion 200 to the other end. The connecting portion 200 is connected to the gripping portion 100. When an operator is required to operate, the operator holds the middle part of the gripping portion 100, which makes it easier to apply force to the connecting portion 200 and the protruding portion 300 and prevent slipping.

[0048] In a preferred embodiment of the present invention, the grip portion 100 is in the shape of a prism.

[0049] Preferably, the gripping portion 100 may also be a quadrangular pyramid, a hexagonal pyramid, an octagonal pyramid, etc., so as to facilitate gripping by an operator.

[0050] Preferably, a gripping groove 101 is provided along the circumferential direction of the gripping portion 100 , and the gripping groove 101 is located at each prism of the gripping portion 100 , so as to facilitate gripping by fingers and prevent slipping.

[0051] Furthermore, the connection between the gripping portion 100, the connecting portion 200 and the protruding portion 300 is a fixed connection.

[0052] The holding portion 100 and the connecting portion 200 may be connected in various ways, such as welding, threaded connection, bonding, etc. Preferably, the holding portion 100 and the connecting portion 200 are connected by welding.

[0053] Preferably, the connection between the connecting portion 200 and the protruding portion 300 is by welding.

[0054] In addition, the holding portion 100 , the connecting portion 200 and the protruding portion 300 may be connected in an integrally formed manner, so that the protruding portion 300 and the connecting portion 200 are stronger, thereby increasing the service life of the protruding portion 300 .

[0055] In this embodiment, the shape of the connection part 200 can be various, such as a cylinder, a cuboid, a cone, etc. Preferably, the shape of the connection part 200 is a cylinder.

[0056] Furthermore, in order to be connected to the gripping portion 100 and the protruding portion 300 respectively, the cross-sectional diameter of the connecting portion 200 gradually decreases from one end close to the gripping portion 100 to the other end, thereby facilitating the transmission of force.

[0057] During specific use, when the protrusion 300 is extended into the oral cavity through the connecting portion 200, since there is an obtuse angle between the connecting portion 200 and the protrusion 300, excessive pulling of the patient's mouth corners can be avoided and the protrusion 300 can be extended to the neck of the residual crown or the root surface more smoothly. Through the arc groove of the inner recess 301, the position of the protrusion 300 can be observed more accurately, and it can reach deeper to the root bifurcation of the neck of the residual crown or the root and root apex of the residual root and the root surface of the broken root, which can save effort and fit the bottom of the tooth root more closely. The operator can extract the tooth root by holding the gripping portion 100, which is more convenient to operate, saves time and effort, and improves the success rate of removing residual roots, broken roots or residual crowns.

[0058] Preferably, the angle between the connecting portion 200 and the protruding portion 300 ranges from 135° to 180°.

[0059] The beneficial effects of the embodiments of the present invention are:

[0060] The tooth root extraction elevator provided in the present embodiment comprises: a gripping portion 100, a connecting portion 200 and an ejecting portion 300; the gripping portion 100 is connected to the ejecting portion 300 via the connecting portion 200, and the connecting portion 200 and the ejecting portion 300 are arranged at an obtuse angle to reduce the pressure of the connecting portion 200 on the residual crown tooth neck or the corner of the mouth, the alveolar bone and the gingival soft tissue; an inner recess 301 is arranged at one end of the ejecting portion 300 away from the connecting portion 200, and the inner recess 301 is arranged with an arc groove, so that the ejecting portion 300 can press into the root bifurcation of the residual crown tooth neck or the middle and root apex of the residual root and the root surface of the broken root through the inner recess 301; the gripping portion 100 is convenient for the operator to hold and operate, and then the connecting portion 200 is convenient for the operator to exert force The connection part 200 and the protrusion part 300 are arranged at an obtuse angle. When the protrusion part 300 acts on the tooth root, the excessive pulling on the corner of the patient's mouth is reduced, and the risk of straining or tearing the corner of the mouth is reduced, thereby strengthening the protection of the corner of the mouth, reflecting the "love injury concept"; the inner concave part 301 is provided with an arc groove, which can more smoothly reach the root bifurcation of the residual crown neck or the root surface near the residual root and the broken root or even the root apex, reducing the waste of time for flap bone removal and excessive damage to soft tissue, reflecting the "minimally invasive concept", eliminating the difficulty that the tooth root extraction elevator cannot fit the root shape, and alleviating the technical problems in the prior art that the tooth elevator cannot accurately apply force, resulting in accidental injury and extraction failure.

[0061] On the basis of the above embodiments, further, in a preferred embodiment of the present invention, the protruding portion 300 includes an inner recess 301 and a supporting portion 302; the supporting portion 302 includes a connecting end 312 and an extending end 322, the connecting end 312 is connected to the connecting portion 200, the inner recess 301 is located at the extending end 322, and the thickness from the connecting end 312 to the extending end 322 decreases successively.

[0062] Among them, by making the thickness of the connecting end 312 greater than the thickness of the extension end 322, the strength of the protruding portion 300 can be guaranteed to the maximum extent, and the extension end 322 can also better fit and extend to the root bifurcation of the residual crown neck or the root surface of the residual root and the broken root, thereby reducing damage and compression to soft and hard tissues.

[0063] In a preferred embodiment of the present invention, the support portion 302 is provided with a protruding groove 332 , and the protruding groove 332 is extended from the connecting end 312 to the extending end 322 .

[0064] Preferably, the arc-shaped cross-section of the protrusion groove 332 (similar to the shape of a waning moon) can reach the bifurcation of the residual crown root or the middle or even the apex of the root between the residual root and the broken root surface in the inner recess 301. The protrusion groove 332 facilitates force transmission and assists the inner recess 301 to facilitate protruding the tooth root.

[0065] Optionally, the diameter range of the protruding groove 332 is: 4-8 mm.

[0066] like Figure 2-5 As shown, in a preferred embodiment of the present invention, the inner recess 301 includes a first recess 331 and a second recess 341; the first recess 331 and the second recess 341 are respectively arranged on both sides of the support portion 302, the first recess 331 is used to observe the position of the protrusion 300 placed at the tooth root, and the second recess 341 is used to press into the root bifurcation of the residual crown cervical region or the middle and apical part of the root of the residual root and the root surface of the broken root; the connecting line between the first recess 331 and the second recess 341 near the extension end 322 is an arc groove.

[0067] Furthermore, the radius range of the arc groove is between the first concave line 311 and the second concave line 321; the first concave line 311 is an arc drawn along the line connecting the two ends of the extension end 322 as the base of the equilateral triangle, with the other vertex of the equilateral triangle as the center and the side length of the equilateral triangle as the radius; the second concave line 321 is an arc drawn along the midpoint of the line connecting the two ends of the extension end 322 as the center and half of the line connecting the two ends of the extension end 322 as the radius.

[0068] In this embodiment, the first center 600 is a circle serving as the first concave line 311 , and a connecting line between an arc centered on the first center 600 and the first endpoint 400 and the second endpoint 500 is the first concave line 311 .

[0069] The connecting line of the arc drawn with the second center 700 and the first end point 400 and the second end point 500 is the second concave line 321 .

[0070] Specifically, the triangle formed by the first endpoint 400 , the second endpoint 500 and the first center 600 is an equilateral triangle, and the second center 700 is the center of the first endpoint 400 and the second endpoint 500 .

[0071] The selection of the first concave line 311 to the second concave line 321 is determined by the curvature of the root surface.

[0072] Preferably, the radius of the first concave line 311 is the distance from the first endpoint 400 to the second endpoint 500 , and the radius of the second concave line 321 is half of the distance from the first endpoint 400 to the second endpoint 500 .

[0073] Furthermore, both side end points of the extension end 322 are smoothly transitioned through rounded corners.

[0074] Since the extension end 322 is close to the bifurcation of the residual crown root or the middle or even the root tip of the residual root and the root surface of the broken root, when the first end point 400 and the second end point 500 are extended, the surrounding soft tissue may be damaged by the sharp thorns. By making rounded corners and smooth transitions at the first end point 400 and the second end point 500, damage to the soft tissue during extension or slippage can be prevented, which reflects the operator's "love injury concept" and "minimally invasive concept".

[0075] The root extraction push rod provided in the present embodiment has a thickness that decreases successively from the connecting end 312 to the extending end 322, which can ensure the strength of the pushing portion 300 while ensuring that the extending end 322 is more in line with and extends to the root bifurcation of the residual crown neck or the residual root and the root surface of the broken root, thereby reducing the damage and squeezing of the soft and hard tissues; the pushing groove 332 facilitates force transmission and assists the inner recess 301 to facilitate root extraction; by determining the specific ranges of the first concave line 311 and the second concave line 321, the implementation of the first concave line 311 and the second concave line 321 can be ensured, the position of the pushing portion 300 can be accurately observed, and the shape of the middle or even apical part of the root bifurcation of the residual crown or the root surface of the residual root and the broken root can be better matched; it is convenient for force transmission and prevents the push rod from slipping, while reducing the waste of time on flap opening and bone removal and excessive damage to tissues, thereby saving effort and time, and making the design more reasonable.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tooth root removal device, characterized in that: include: A gripping portion, a connecting portion and a protruding portion; The gripping part is connected to the protruding part through the connecting part, and the connecting part and the protruding part are arranged at an obtuse angle to reduce the pressure of the connecting part on the residual crown tooth neck or the corner of the mouth, the alveolar bone and the gingival soft tissue; The protruding portion is provided with an inner concave portion at one end away from the connecting portion, and the inner concave portion is provided with an arc groove, so that the protruding portion can pass through the inner concave portion to press into the root bifurcation of the residual crown tooth neck or the middle and root apex of the residual root and the root surface of the broken root; The protruding portion includes an inner concave portion and a supporting portion; the supporting portion includes a connecting end and an extending end, the connecting end is connected to the connecting portion, the inner concave portion is located at the extending end, and the thickness from the connecting end to the extending end decreases in sequence; The support portion is provided with a protruding groove, and the protruding groove is extended from the extension end to the connection end; The cross-sectional shape of the protruding groove is an arc shape, and when the inner concave portion reaches the bifurcation of the residual crown root or the middle part of the root to the root tip of the residual root and the root surface of the broken root, the protruding groove facilitates force transmission; The inner concave portion includes a first concave portion and a second concave portion; the first concave portion and the second concave portion are respectively arranged on both sides of the supporting portion, the first concave portion is used to observe the position of the protruding portion placed at the tooth root, and the second concave portion is used to press into the root bifurcation of the residual crown tooth neck or the root middle and root apex of the residual root and the root surface of the broken root; A connecting line between the first recessed portion and the second recessed portion close to the extending end is in the shape of the circular arc groove.

2. The tooth root extraction elevator according to claim 1, characterized in that: The radius range of the arc groove is between the first concave line and the second concave line; The first concave line is an arc drawn along the line connecting the two ends of the extension end as the base of the equilateral triangle, with the other vertex of the equilateral triangle as the center and the side length of the equilateral triangle as the radius; The second concave line is an arc line with the midpoint of the line connecting the two ends of the extension end as the center and half of the line connecting the two ends of the extension end as the radius.

3. The tooth root extraction elevator according to claim 1, characterized in that: Both end points of the extension end are smoothly transitioned through rounded corners.

4. The tooth root extraction elevator according to claim 1, characterized in that: The angle between the connecting portion and the protruding portion ranges from 135° to 180°.

5. The tooth root extraction elevator according to claim 4, characterized in that: The gripping portion is in the form of a prism.

6. The tooth root extraction elevator according to claim 1, characterized in that: A gripping groove is arranged along the circumferential direction of the gripping portion.

7. The tooth root removal elevator according to any one of claims 1 to 6, characterized in that: The cross-sectional diameter of the connecting portion gradually decreases from one end close to the gripping portion to the other end.

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