KR101430935B1 - apparatus for removing gum in dental implant - Google Patents

Abstract

The present invention provides an apparatus for removing a gum for an implant. According to the present invention, the gum covering an alveolar bone during implant embedding can be removed quickly and accurately so that an implant operation can be more accurate and perfect. The present invention includes: a sank portion in which a mounting portion coupled with a dental hand piece is formed in an upper end portion and a coupling portion is formed in a lower end portion; a guide body portion having a cylindrical body portion connected to the sank portion for integral rotation, having an outer diameter corresponding to an inner circumference of a guide hole for rotation support after insertion into the guide hole of a stent guiding a fixture embedding position, and having a through-portion formed in a side surface portion so that a hollow portion formed therein communicates with the outside, and a rotation cutting portion connected at an angle to a lower end of the body portion, having a narrowing outer diameter downward, and having a circular cutting blade along a lower side circumference of an opening portion formed to communicate with the hollow portion therein; and a rotating crushing portion that is provided inside the guide body portion and has a crushing blade arranged inside the circular cutting blade formed in an end portion.

Description

[0001] The present invention relates to a gum removal device for an implant,

The present invention relates to a gum removal device for an implant, and more particularly, to a gum removal device for an implant that improves the accuracy and completeness of implant treatment by quickly and accurately removing gums covering the alveolar bone when the implant is implanted.

Generally, an implant refers to a substitute for replacing a human tissue when the original human tissue is lost, but refers to implanting an artificial tooth in the dentistry. To replace the missing tooth root, a fixture made of titanium or the like which has no rejection to the human body is planted in the alveolar bone that has been taken out of the tooth, and then the tooth is restored by fixing the artificial tooth.

In the case of general prostheses or dentures, the surrounding teeth and bones are damaged over time, but the implants can prevent damage to the surrounding dental tissues and can be used stably because there is no secondary cause of tooth decay. In addition, since the implant has the same structure as the natural teeth, there is no pain or foreign body sensation of the gums, and it is advantageous that the implant can be used semi-permanently.

1 is a flowchart illustrating a conventional implant procedure.

As shown in FIG. 1, the conventional implant procedure includes a primary procedure (s1, s2, s3, s4) of placing a fixture in the alveolar bone and a time ) And fixing the final prosthesis (s5, s6).

First, the primary procedure includes a gum removal step (s1) for opening the gum of a tooth-missing part, a multistage drilling step (s2) for forming a perforation where the fixture is to be placed, a fixture placement step (s3) And a step (s4) of binding temporary teeth to the tooth tip.

Specifically, the gums are removed through a tissue punch or the like in the gum removal step (s1), and the alveolar bone at the position where the fixture is placed is exposed. Then, the exposed portion of the alveolar bone is subjected to a multi-step drilling step (s2) to form a perforation for fixture placement.

At this time, the multi-step drilling step (s2) may include forming an initial hole, expanding a hole, forming a thread in a hole, and removing a remaining alveolar bone in the hole. Depending on the type of drill and the drilling method used, it can be varied.

Then, the fixture is placed on the perforations formed through the multi-step drilling step (s2) (s3), and the temporary teeth are coupled to the fixture placed (s4), thereby completing the primary procedure.

Here, the fixture placed in the perforation serves as the root of the artificial tooth. Therefore, it is very important to form an accurate hole in the multi-step drilling step (s2) in order to provide a stable and fast restoration process in which the alveolar bone forms osseointegration with the fixture and provides a stable bonding force between the alveolar bone and the fixture after the osseointegration. And the completeness of artificial tooth formation through implant treatment is determined.

Meanwhile, in the conventional device for removing gums, a gum removing device is provided with a cylindrical body having a downward opening and a blade along a lower edge thereof. The gum is cut through the blade to form a perforated part, Collected inside the body and discharged to the outside.

However, in the past, not only the gums that have been cut through the blade are not accurately moved into the cylindrical body, but also gums collected inside the cylindrical body are also moved downward during the cutting operation of the blade, So that the cutting force is reduced.

In addition, since the cut gums are entangled in the alveolar bone, or the gums are caught between the gums and the alveolar bone outside the cut part, the gums can not be completely removed and the gums must be removed and scraped off using a separate tool There is a problem that is required.

Korean Patent No. 10-0829243

In order to solve the above problems, there is provided a gum removal device for an implant which improves the accuracy and completeness of an implant procedure by quickly and accurately removing gums covering the alveolar bone when the implant is implanted.

According to an aspect of the present invention, there is provided a dental handpiece comprising: a shank portion having a mounting portion coupled to a dental handpiece at an upper end thereof and a coupling portion formed at a lower end thereof; And a hollow portion formed in the inside of the guide hole for communicating with the outside so as to be rotatably inserted into the guide hole of the guide for guiding the fixture mounting position, And a rotary cutting part connected to the lower end of the body and formed with a circular cutting edge along a lower edge of the opening part, the outer cutting part being connected to the hollow part, A guide body portion; And a cutting blade disposed eccentrically from the center of rotation at an inner side of the guide body and disposed at an inner side of the circular cutting edge at an end thereof and having a cutting edge at a lower end of a curved surface portion connecting the rear surface portion and the side surface portion, And a rotary crushing portion formed with a round surface extending upwardly to pressurize the water to flow along the inner circumference of the hollow portion to facilitate the discharge through the penetration portion.

Here, the curved surface portion is disposed on the upper part of the arc surface portion so as to face the penetrating portion, and the rear surface portion extends upward along the opposite surface of the crush blade in the direction opposite to the rotation direction so that the rear surface portion is connected to one end portion of the curved surface portion, And the curved surface portion is disposed so as to be in close contact with the inner circumference of the rotary cutting portion.

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In addition, a stepped portion is formed on the inner circumference of the rotary cutting portion so as to be enlarged toward the upper side at a portion connected to the inner circumference of the cylindrical body so as to be connected to the hollow portion, and the engaging portion is inserted and coupled to the inner circumference of the guide body portion, And the crushing blade is disposed at an inner side of the rotary cutting portion and spaced apart from the lower end of the rotary cutting portion by a predetermined interval.

Preferably, the pulverizing blade has an inner end disposed on the rotation center side, and an outer end protruding from the rotation direction so as to be rounded.

Through the above solution, the apparatus for removing gums for implants according to the present invention provides the following effects.

First, the gum cut through the circular cutting edge provided along the bottom edge of the rotary cutting portion is finely crushed by the rotary crushing portion provided inside the rotary cutting portion so that the discharge through the penetrating portion is smoothly performed, and the crushed gum Since the gums are sucked together with the cleaning water supplied during the gum removal procedure and discharged to the outside, the gums can be completely removed by one operation without any additional operation for removing the residue, thereby improving the efficiency and usability of the product.

Second, the arc surface portion is thickly connected as the distance from the rotation center of the crushing blade is increased, and the space is formed so as to become larger toward the rotation center side of the crushing blade, so that the rapidly moving outer crushing blade is firmly supported, So that the cutting force is prevented from being reduced by integrating the cutting material in the outer milling blade, so that the durability and cutting efficiency of the product can be improved.

Third, the stepped portion is provided in a shape that is enlarged from the lower part to the upper part so as to facilitate the upward flow of the cutting water introduced through the opening part when rotating and to facilitate the external discharge through the penetrating part, It is possible to prevent the re-inflow of the portion so as to prevent a reduction in the cutting force of the circular cutting edge or the crushing blade.

Fourthly, since the crushing blade is disposed inside the rotary cutting portion and is disposed spaced upward from the lower end of the rotary cutting portion, it is possible to accurately grind and smoothly discharge the cut gum without damaging the alveolar bone, thereby improving the accuracy of the product .

1 is a flowchart showing a conventional implant procedure.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a gum removal device for an implant,
FIG. 3 is a perspective view illustrating an apparatus for removing gums for an implant according to an embodiment of the present invention. FIG.
FIG. 4 is a partial projected side view of an apparatus for removing gums for an implant according to an embodiment of the present invention; FIG.
FIG. 5 is a rear view illustrating an apparatus for removing gums for an implant according to an embodiment of the present invention. FIG.
FIG. 6 is an exploded perspective view showing an apparatus for removing gums for an implant according to an embodiment of the present invention; FIG.
FIG. 7 is a rear view illustrating an apparatus for removing gums for an implant according to another embodiment of the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a gum removal device for an implant according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a perspective view illustrating an apparatus for removing gums for an implant according to an embodiment of the present invention. FIG. 4 is a cross-sectional view of a gum removal device for implantation according to an embodiment of the present invention. FIG. 5 is a rear view of a device for removing gums for an implant according to an embodiment of the present invention. FIG. 6 is a cross- Fig. 2 is an exploded perspective view showing the gingham removing device.

2 to 6, the apparatus for removing gum 100 for an implant according to an embodiment of the present invention includes a shank portion 10, a guide body portion 20, and a rotary crushing portion 30 .

Here, the apparatus for removing gums 100 for an implant is used in a preceding procedure of multistage drilling to form perforations for placement of a fixture in an implant procedure, and the alveolar bone 4 at a position where the fixture is placed in the oral cavity, The gums 3 are removed.

The shank portion 10 has a mounting portion 11 coupled to a dental handpiece at an upper end thereof and a coupling portion 12 at a lower end thereof. Here, the dental handpiece is a hand drill device used for providing a rotational force to the gingival device for implant. At this time, the mounting portion 11 is provided in a D-cut shape and can receive a rotational force when engaged with the handpiece, and can be integrally rotated.

The shank portion 10 connects the dental handpiece (not shown) with the guide body portion 20 and transmits the rotational force transmitted to the mounting portion 11 to the guide body portion 20 have.

At this time, the shank portion 10 may be formed to be independent of the diameter of the guide body portion 20, but may be smaller in diameter than the guide body portion 20.

The shank portion 10 may be formed in a cylindrical shape. Therefore, the shank portion 10 firmly supports the guide body portion 20 during high-speed rotation, and prevents the rotation damage such as warping and twisting, thereby improving the durability, It is possible to prevent the precision of drilling from decreasing.

At this time, the guide body portion 20 is connected to the outer periphery of the coupling portion 12.

The guide body 20 is integrally rotated with the shank 10 and includes a cylindrical body 20b and a rotary cut 20a. At this time, it is preferable that the cylindrical body 20b and the rotary cutting portion 20a are integrally provided.

2 to 3, the cylindrical body portion 20b is inserted into the guide hole 2 of the stand 1 for guiding the fixture mounting position and is rotatably supported by the inner periphery of the guide hole 2 Respectively.

In detail, since it is difficult to grasp the exact position and direction to be performed when forming the perforation in which the fixture is to be inserted in the implant procedure, an auxiliary device called a stent (1) is used.

Here, the above-mentioned stand 1 is formed into a profile inside the oral cavity. The stent 1 is fixed with teeth and gums of teeth and gums of a bodily or edentulous patient, and a guide hole 2 is formed at each position where the implant is required. Preferably, the guide hole 2 is provided as a hole in a cylindrical shape, and is provided so as to guide the drill device inserted into the inside of the drill device.

At this time, the cylindrical body 20b is inserted into the guide hole 2 and slid up and down to be guided. Since the cylindrical body 20 is rotatably supported in the guide hole 2, the user can accurately determine the position corresponding to the fixture mounting position The portion of the gums can be easily removed.

In addition, the guide holes 2 may be provided with various diameters depending on the type of natural teeth to be replaced with implants. In detail, the fixture that becomes the root of the artificial tooth has dimensions of 3.5 mm, 4.0 mm, 4.5 mm, 5.0 mm, and the like, so that the diameter of the drill is about 3.0 mm, 3.5 mm, 4.0 mm, Can be selected.

That is, it is preferable that the guide hole 2 is selected to have a size corresponding to the diameter of the drill, and the cylindrical body 20b is provided corresponding to the diameter of the guide hole 2. At this time, it is preferable that the cylindrical body 20b is provided with a slightly smaller outer diameter than the inner circumference of the guide hole 2 so that the cylindrical body 20b can be inserted into the guide hole 2 and rotated.

2 to 4, a hollow portion 23 is formed in the cylindrical body portion 20b, and a through portion 21 is formed on the side portion so that the hollow portion 23 communicates with the outside. do.

In this case, it is preferable to understand that the cuts generated in the gum removal procedure may be introduced into the hollow part 23, and the cuts are gums removed at the implant placement position.

The cut material may flow out to the outside through the penetration part 21 communicating with the hollow part 23. [ At this time, it is preferable that the penetration portion (21) has a width in the vertical direction exceeding the thickness of the stand (1).

Therefore, when the cylindrical body 20b is inserted into the guide hole 2 and is rotatably supported, the gums are removed, and at least one of the upper side and the lower side of the penetration portion 21 is inserted And can be exposed to the outside of the guide hole 2.

Accordingly, the cutting fluid flowing into the hollow portion 23 can be smoothly flowed outward along the penetration portion 21 without being accumulated on the inside of the hollow portion 23, It is possible to prevent the tooth from being entangled with the teeth or the alveolar bone that is not the object of removal.

Thus, the gums at the implant site can be removed smoothly and accurately, and the efficiency of the product can be improved because no additional work is required, such as removing and scraping the gum from the gum by a separate tool or procedure.

The rotary cutting portion 20a is slantingly connected to the lower end of the body portion 20b so that the outer diameter of the rotary cutting portion 20a becomes narrower toward the lower side and the opening portion 24 is formed therein to communicate with the hollow portion 23, A circular cutting edge 22 is provided on the lower edge of the opening 24 to cut the gum at the fixture placement position.

Here, the circular cutting edge 22 directly contacts the gum at the fixture placement position, and cuts the gum when it is rotated. At this time, the gum inside the circular cutting edge 22 is cut into a circular shape and flows into the inside of the opening portion 24.

The circular cutting edge 22 is inserted into the alveolar bone 4 side, and the gum is cut and separated from the entire tissue. The circular cutting edge 22a is inserted to the alveolar bone 4 side so as to push the gum outside the circular cutting edge 22 outwardly, Is brought into close contact with the gums outside the circular cutting edge (22).

Accordingly, the gums separated from the entire tissue through the circular cutting edge 22 and the friction-separated gum residue due to the rotation of the circular cutting edge 22 are leaked to the outside of the rotary cutting portion 20a And can smoothly flow to the side of the hollow portion 23 through the opening portion 24.

The rotary crushing unit 30 is provided on the inner side of the guide body 20 and has a crushing blade 31 disposed at an inner side of the circular cutting edge 22 at an end thereof. At this time, the rotary crushing unit 30 cuts through the circular cutting edge 22 to finely crush the gum that has flowed inward of the rotary cutting unit 20a.

The fact that the crushing blade 31 is disposed inside the circular cutting edge 22 means that the crushing blade 31 is disposed inside the circumference of the circular cutting edge 22 and the circular cutting edge 22 Is formed on the upper side of the lower end of the rotary cutting portion 20a and is recessed inward so as not to be exposed to the outside.

The rotary crushing unit 30 may extend from the lower surface of the coupling unit 12 and may have an end disposed inside the rotary cutting unit 20a and may be integrally formed with the coupling unit 12. [ have.

The rotary crushing unit 30 may be separately manufactured for convenience of manufacture and may be coupled to the lower surface of the coupling unit 12. When the rotary crushing unit 30 is separately manufactured, Or may be coupled to the inner periphery of the cutting portion 20a.

In detail, the gums of the rotated portion of the circular cutting edge 22 are cut into a circular shape. As the circular cutting edge 22 moves toward the alveolar bone 4, (24).

At this time, the rotary crushing unit 30 flows into the rotary cutting unit 20a, and is rotated in contact with the upper side of the gum attached to the whole tissue to cut off a part of the gum that is caught in the crushing blade 31. [ Through this process, the gums are separated into whole tissues and finely fragmented.

Accordingly, the gum cut by the circular cutting edge 22 can be crushed in the rotating cutting portion 20a and flow into the hollow portion 23 in a finely divided state, So that it can be discharged to the outside of the hollow portion 23.

During the period of gum removal, the rubbing heat between the gum and the rotary cutting portion 20a, which is rotated at a high speed, is removed, and washing water is supplied to clean the blood or other residues generated during cutting. The rubbing heat and other residues The operation of sucking the wash water that has absorbed the water is progressed together.

At this time, the gum cut by the circular cutting edge 22 is crushed through the rotary crushing part 30 and flows in a finely fragmented state, so that it can join the flow of the washing water and be sucked and removed together with the washing water.

As a result, the gums can be completely removed with a single operation without any additional operation after removal of the cutting residue remaining at the fixture placement position by a separate tool after the gum removal procedure, thereby improving the efficiency of the product .

It is preferable that the crushing blade 31 is disposed inside the rotary cutout 20a and is spaced upward from the lower end of the rotary cutout 20a by a predetermined interval.

The predetermined interval is set such that the crushing blade 31 is not exposed to the lower end of the rotary cutting portion 20a and when the lower end of the rotary cutting portion 20a contacts the alveolar bone 4, 31) do not contact the alveolar bone (4).

In detail, the crushing blade 31 may be disposed inside the rotary cutting portion 20a to crush the gum cut circularly by the circular cutting blade 22. At this time, the circular cutting edge 22 is inserted into the alveolar bone 4 side to cut the gums at the fixture placement position, and the crushing blade 31 is spaced upward from the lower end of the rotary cutting portion 20a, 4 can be prevented from being damaged.

That is, the alveolar bone from which the gums have been removed forms a perforation through multi-stage drilling. The initial drilling operation is performed from the center of the exposed alveolar bone. If the exposed central portion is damaged, the precision of the initial drilling operation may be deteriorated. . ≪ / RTI >

Therefore, the crushing blade 31 is provided to be spaced apart from the lower end of the rotary cutting portion 20a, thereby preventing the alveolar bone from being damaged, and grinding only the cut gum and smoothly discharging it, so that the accuracy of the product can be improved .

3 to 5, the rotary crushing unit 30 includes a curved surface portion 33, a rear surface portion 34, and a side surface portion 35. The curved surface portion 33 is sloped And a crushing blade 31 may be provided along the lower end of the arc surface portion 32. [

In detail, the rotary crushing unit 30 may be provided in the shape of a cylinder with four sides divided, and a curved surface portion 33 forming an arc may be disposed so as to face the penetrating portion 21. [

At this time, the curved surface portion 33 presses the cutting fluid introduced into the hollow portion 23 to flow along the inner periphery of the hollow portion 23, thereby promoting the discharge of the cutting portion through the penetration portion 21 .

At this time, it is preferable that the curved surface portion 33 is disposed closely to the inner circumference of the rotary cutting portion 20a. Herein, the contact means that the gum is not introduced into the gap between the curved surface portion 33 and the rotary cutting portion 20a but is spaced at a minute interval so as to supply water for cooling the pulverizing blade 31 It is desirable to understand it in words.

Thus, washing water flows along the inner circumference of the rotary cutting portion 20a where the frictional heat is generated during high-speed rotation and along the outer circumference of the rotary crushing portion 30, so that the frictional heat can be removed, 20a and the rotary crushing unit 30 can be prevented from being contaminated.

The rear part 34 extends upward along the opposite surface of the crushing blade 31 opposite to the rotation direction so that the rear part 34 is connected to one end of the curved part 33. The side part 35 extends upwardly from the rear part 34, And is connected to the other end of the curved surface portion 33.

Here, the opposing surface in the counterclockwise direction is rotated in the rotational direction (clockwise direction in FIG. 5) when the rotary crushing unit 30 is rotated so as to crush the gum inserted into the opening 23 of the rotary cutout 20a Means the plane that follows.

At this time, the side portion 35 and the rear portion 34 are formed to have a bent cross-section so that the cut and crushed gums can smoothly flow into the hollow portion 23 by flowing into the open portion 24, (24) and the hollow portion (23).

On the other hand, it is preferable that the arc-shaped portion 32 is formed on the facing surface of the crushing blade 31 in the direction of rotation so as to extend upwardly so as to guide the cutting material upward. Here, the rotationally-facing surface is a surface facing the rotational direction (the clockwise direction in FIG. 5) when the rotary grinding portion 30 is rotated to grind the gum inserted into the opening portion 24 of the rotary cutting portion 20a Surface.

At this time, the arc surface portion 32 is provided by cutting the lower end portion of the rotary crushing portion 30, the curved surface portion 33 is connected to the round upper side, and the lower end portion is connected to the crushing blade 31 And the side end portion may be connected to the side portion 35.

Preferably, the rotary crushing unit 30 is disposed eccentrically from the center of rotation of the guide body 20. In other words, the crushing blade 31 is disposed to extend outward from the rotation center of the guide body 20, and one end of the crushing blade 31 on the rotation center side is small when the guide body 20 rotates It can be rotated by drawing a circle having a diameter and rotating with a circle having a larger diameter toward the other end.

At this time, the arc face portion 32 is formed to be narrower as it is farther from the rotation center of the crushing blade 31, and is connected to the crushing blade 31 in a steep slope with the curved face portion 33. That is, the arc surface portion 32 is formed to be wider toward the rotation center side of the crushing blade 31 and can be slimly connected to the crushing blade 31 with a gentle inclination to the curved surface portion 33.

Accordingly, the arc surface portion 32 guides the cut material cut from the outside of the crushing blade 31 to the rotation center side having a wide space and discharges the cut material to the upper side, It is possible to prevent the cutting force from being reduced by integrating the cutting material and covering the crushing blade 31 so that the cutting efficiency of the product can be improved.

4, a hollow portion 23b is connected to the inner circumference of the cylindrical body portion 20b so that the hollow portion 23 is extended and connected to the inner circumference of the rotary cutting portion 20a. (25) is preferably formed.

At this time, the step portion 25 has a narrow lower portion and a wider upper portion. In this embodiment, the step portion 25 has a stepped shape. However, a method of connecting the narrow portion to the wide portion may be variously performed. For example, a narrow inner circumference of the rotary cutout 20a and a wide inner circumference of the hollow portion 23 may be inclined or rounded.

In other words, the step portion 25 is provided in a wider shape than the lower portion, so that cuttings such as gums that flowed into the opening portion 24 during rotation can be easily moved upward, So that it does not flow downward.

In detail, the gum cut and crushed in the rotary cutting portion 20a flows into the hollow portion 23 and is discharged to the outside through the penetration portion 21. The cut portion introduced into the hollow portion 23 When the liquid flows downward, it is entangled with the gums and alveolar bone that are not to be removed.

The cuttings adhered to the alveolar bone or the gum may reduce the accuracy of drilling during subsequent drilling for forming a fixture-shaped perforation and may delay bonding between the fixture and alveolar bone, thereby deteriorating the quality of the implant treatment.

At this time, the stepped portion 25 restricts the downward flow by the centrifugal force so that the cutting material rotating along the inner periphery of the hollow portion 23 is not re-introduced into the rotary cutting portion 20a.

As described above, the step portion 25 is provided in a shape which is enlarged from the lower portion to the upper portion so as to facilitate the upward flow of the cutting water introduced through the opening portion 24 when rotating, and to facilitate the discharge through the through portion 21 .

Further, the downward flow of the cutting fluid that has flowed upward can be restricted to prevent re-inflow into the opening portion 24, so that the cutting material is entangled with the gum or alveolar bone not to be removed, It is possible to prevent the gums from being adhered to the wearer's body 22 and to perform efficient gum removal without reducing the cutting force.

4 to 6, the engaging portion 12 is inserted into and coupled with the inner circumference of the guide body portion 20, and the engaging portion 12 is engaged with the outer circumferential surface of the guide body portion 20, It is preferable that the step 13 be formed. At this time, the guide body 20 and the engaging portion 12 may be provided as separate members.

The guide body 20, which is a separate member, may be welded along the coupling step 13 while being fitted to surround the outer periphery of the coupling part 12. [

As described above, since the two members having a complicated structure are formed as separate members, not only the production cost of the product can be reduced, but also the productivity can be improved because the welding can be performed easily and accurately based on the bonding step 13 .

7 is a rear view of an apparatus for removing gums for an implant according to another embodiment of the present invention. In this embodiment, the basic configuration except for the crushing blade 231 of the rotary crushing unit 230 is the same as that of the above-mentioned one embodiment, so that detailed description of the same configuration will be omitted.

As shown in FIG. 7, it is preferable that the crushing blade 231 has an inner end disposed on the rotation center side, and an outer end protruding from the rotation direction to be rounded.

In other words, the crushing blade 231 may have a concave curved surface corresponding to the rounded shape of the crushing blade 231, which is connected to the upper side of the crushing blade 231.

In detail, as the circular cutting edge 222 is rotated, the gum is cut into a circle, and the gum can be finely ground by the crushing blade 231 rotated together with the circular cutting edge 222.

At this time, since the outer end of the crushing blade 231 is protruded so as to precede the rotating direction, the outer end front surface of the crushing blade 231 and the gum can be contacted at an oblique angle.

Accordingly, since the resistance force applied to the crushing blade 231 can be dispersed along the slanting direction during the crushing of the gum, the durability of the crushing blade 231 can be improved, and the rotational force required for crushing the gum can be reduced The crushing efficiency of the product can be improved.

In addition, the gum that has been crushed at the outer end of the crushing blade 231 flows toward the center of rotation along the arc surface portion connected to the crushing blade 231, and can be guided upward to be discharged upward to prevent accumulation of the crushed gum, 231 can be prevented.

As described above, the present invention is not limited to the above-described embodiments, and variations and modifications may be made by those skilled in the art without departing from the scope of the present invention. And such modifications are within the scope of the present invention.

100,200: Gum removal device for implant 1: Stent
2: guide hole 3: gums
4: alveolar bone 10: shank portion
11: mounting portion 12:
13: coupling step 20: guide body part
20a: rotary cutting portion 20b: cylindrical body portion
21: penetrating portion 22, 222: circular cutting edge
23: hollow part 24: open part
25: step portion 30,230: rotary crushing portion
31,231: Crushing blade 32,232:
33: curved surface portion 34: rear surface portion
35:

Claims (5)

A shank portion formed at an upper end thereof with a mounting portion coupled to the dental handpiece and having a coupling portion at a lower end thereof;
And a hollow portion formed in the inside of the guide hole for communicating with the outside so as to be rotatably inserted into the guide hole of the guide for guiding the fixture mounting position, And a rotary cutting part connected to the lower end of the body and formed with a circular cutting edge along an lower edge of the opening part which is inclined to the lower part and is formed so as to have an outer diameter narrower toward the lower part and communicated with the hollow part, A guide body portion; And
A cutting blade disposed on the inner side of the guide body and eccentrically disposed from the center of rotation of the guide body and having a crushing blade disposed on an inner side of the circular cutting blade at its end and having a cutting edge at a lower end of a curved surface portion connecting the rear surface portion and the side surface portion, And a rotary crushing portion having a round surface extending upwardly to facilitate the discharge through the perforation portion so as to flow along the inner circumference of the hollow portion. delete The method according to claim 1,
Wherein the curved surface portion is disposed on an upper portion of the arc surface portion so as to face the penetrating portion and the rear surface portion extends upward along the opposite surface of the crush blade in the direction opposite to the rotation so that the rear surface portion is connected to one end portion of the curved surface portion, And connected to the other end of the curved portion,
Wherein the curved surface portion is disposed in close contact with the inner circumference of the rotary cutting portion. The method according to claim 1,
A stepped portion is formed at an inner circumference of the rotary cutting portion and connected to the inner circumference of the cylindrical body so that the hollow portion is extended and connected,
The coupling part is inserted and coupled to the inner circumference of the guide body part, and a coupling step for supporting the upper edge of the guide body part is formed along the outer circumference,
Wherein the crushing blade is disposed at an inner side of the rotary cutting portion and is spaced apart from the lower end of the rotary cutting portion by a predetermined interval. The method according to claim 1,
Wherein the crushing blade has an inner end disposed on the rotation center side and an outer end protruding from the rotation end so as to be rounded.

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