WO2010036044A2

WO2010036044A2 - Drill and guide bushing for precise implant placement, and a precise implant placement device employing the same

Info

Publication number: WO2010036044A2
Application number: PCT/KR2009/005466
Authority: WO
Inventors: 이태경
Original assignee: Yi Tae-Kyoung
Priority date: 2008-09-24
Filing date: 2009-09-24
Publication date: 2010-04-01
Also published as: KR20100034446A; WO2010036044A3; KR101027481B1

Abstract

The present invention relates to a drill and a guide bushing for precise implant placement. More specifically, the present invention relates to a drill and a guide bushing for precise implant placement and to a precise implant placement device employing the same. In the present invention, the lower part of the shank of a drill for drilling alveolar bone is provided with a guide part such that the drill can come in close contact with and be guided by the circular inner circumferential surface of the guide bushing. The guide part is formed in the shape of a pipe which screws together with a screw thread formed on the outer circumferential surface of the shank of the drill. Further, the guide bushing has an inner circumferential surface which is circular and an outer circumferential surface which is substantially elliptical, thereby allowing the guide bushing to be easily installed even in cases where the implant-placement site is positioned between teeth with a narrow space, while at the same time preventing, insofar as possible, the guide bushing from rotating during drilling.

Description

Drill and guide bush for precise implant placement and precision implant device using the same

The present invention relates to a drill and an induction bushing for precise implantation of the implant and to an implant precision implantation device using the same, and more particularly, to drill the alveolar bone to be in close contact with the circular inner circumferential surface of the induction bushing. The guide portion is provided in the lower portion of the shank, but the guide portion is formed in a pipe shape that is screwed with the screw formed on the outer peripheral surface of the drill shank, and the inner peripheral surface of the induction bushing is circular, but the outer peripheral surface is drilled by making an elliptical shape Drills and guide bushings for precise implant placement that can be easily installed even when the implant placement position is located between narrow teeth, while preventing the guide bushing from rotating as much as possible. It relates to an implantation device.

When dental implants are performed, a drill is generally used to drill a groove into which the fixture is buried in the alveolar bone.

The placement of implants including fixtures varies greatly from patient to patient, which is based on the various factors such as the patient's teeth, the position of the teeth requiring implant treatment, and the condition of the patient's alveolar bone. Because you have to decide. When the position, direction and depth of implantation are determined, the drilling of the alveolar bone is performed by using a drill.

Drilling work for alveolar bone drilling is difficult for beginners as well as experienced users to accurately measure depth and direction in the process. Especially for beginners who are not experienced in the procedure, it is very difficult to measure the drilled depth without any special measuring step during the procedure.

In addition, when drilling a groove for placing the fixture into the alveolar bone, the operator may apply a force to the drill to drill the drilling operation to a certain depth because it is not easy to determine to what extent the drilling operation is currently performed. Drilling over the hole may damage the nerve in the alveolar bone.

On the contrary, if the drilling operation is terminated before reaching the predetermined drilling depth, the drilled groove depth is shallow and excessive force is required to fix the fixture, which causes damage to the thread around the groove or the fixture to be fixed to the groove. It may not be completely fixed and may cause a problem in the future.

In order to solve this problem, in case of implantation of the gingival bone and exposing the alveolar bone and then drilling by using a direct drill on it, a stent to accurately determine the exact position and direction to perform the drilling operation An assistive device called

The manufacturing process and use method of the stent conventionally used are as follows.

First, before the implant procedure, the upper and / or lower jaw of the subject is obtained using a rubber impression material, and then the plaster is poured into the same to form the upper and / or lower jaw of the subject. Create a model.

This is then coupled to an artificial articulator to reproduce outside the oral cavity of the jaw joints and the upper and lower teeth, almost similar to those of the subject.

Subsequently, the tooth is lost and a virtual tooth model is made of a transparent material at the position where the implant is to be treated, which is used as a stent.

In this way, a predetermined mark is placed at the position where the drill is to be inserted among the completed stents, a mark indicating the direction to be drilled on the outside of the stent, and the operator drills using a drilling tool such as a drill with reference to the mark and the marking. Will do the work.

However, such a conventional stent is very unstable to secure the stability in the vertical or horizontal direction during the punching operation for the dental or edentulous operator in contact with the inner surface.

Accordingly, the present applicant, as shown in FIG. 1, has applied for the invention related to the stent in which the stent induction part 23 is fixed to the body part 1 as a patent application No. 2007-0107408 dated October 24, 2007. Also, the implant placement guide device shown in FIG. 2 used in the present inventor's stent has been filed as a patent application No. 2008-0037614 dated April 23, 2008.

The diameter of the inner circumferential surface of the stent induction part 23 fixed to the stent of the present applicant corresponds to the outer diameter of the induction part 21 provided in the drill, and the stopper 17 integrally formed on the lower surface of the inner circumferential surface of the stent induction part 23. This limits the drilling depth of the drill.

Therefore, the perforation direction (angle) and depth of the alveolar bone are determined according to the dental condition of the subject, for example, the size of the tooth requiring implant treatment, the thickness of the gingiva covered over the alveolar bone, and the condition of the alveolar bone. 23), the alveolar bone is drilled in the correct direction and depth by the drill.

As described above, according to the applicant's prior patent application, the accuracy of the angle and depth of the hole drilled in the alveolar bone for the implantation procedure is significantly improved compared to the conventional methods without being greatly affected by the skill of the operator. We found that there was a need for improvement.

First of all, in the prior patent application, since the diameter of the induction bushing (stent induction part) is limited by the size of the tooth, the diameter of the induction bushing is inevitably subdivided. Increasing the type of induction bushing means that the types of drills having induction parts corresponding to the inner circumferential surface diameter of the induction bushing should also be increased. Furthermore, the types and numbers of drills to be prepared are exponentially varied. Should increase. Accordingly, it is necessary to minimize the type of drill that can cope with various kinds of induction bushings.

Second, there is a part to be improved in the drill itself used to drill the alveolar bone, which is a condition of the drill blade because the wear on the guide portion in contact with the induction bushing is more severe than the cutting edge of the drill actually responsible for drilling work. There is an inefficient aspect that the life of the drill is determined by the wear state of the guide rather than In most cases, the drill blade is coated with an expensive coating material, while the induction bushing of the drill that comes into contact with the induction bushing and the large surface while rotating at high speed has no protection. However, it is not preferable to apply an expensive coating material to the induction part in that it increases the cost of the product. Therefore, it would be more desirable to solve this problem in connection with the minimization of the type of drill, the first of which needs improvement.

Third, the angle and depth of puncturing the alveolar bone are determined by the stent guide part fixed to the stent. If the manufactured stent is not satisfactory, there may be an error in the puncture depth. In this case, it is difficult to find another solution according to the applicant's conventional patent invention. Therefore, there is a need for new means to adjust the depth of drilling by changing the position (or length) of the guide portion provided in the drill.

Fourth, the induction bushing used with the drill having the induction part also needs to be improved to some extent. In order to precisely guide the drill having the induction part, it is preferable that the induction part is closely contacted with the inner circumferential surface of the induction bushing. The narrower the gap between and the guide bushing, the greater the moment that the guide bushing also rotates due to the rapid rotation of the drill. This moment acting on the induction bushing is a factor that hinders the rigidity of the induction bushing fixed to the stent. Therefore, in order to precisely implant the implant, it is necessary that the supporting integrity of the induction bushing is not impaired even by the moment caused by the rotating drill.

In addition, the role of the guide bushing, as described above, the diameter of the inner peripheral surface is formed in a size corresponding to the outer diameter of the guide portion provided in the drill, the stopper is integrally formed on the lower surface of the inner peripheral surface contact with the lower surface of the guide portion of the drill. Thereby limiting the drilled depth of the drill by preventing further entry. However, the configuration of the stopper can only limit the longitudinal movement of the drill, and likewise, the tab is guided to the guide bushing to form a thread in the perforated hole or the thread is simultaneously screwed into the hole. It can only limit the longitudinal movement of the fixture. This is not a problem during drilling of the drill, but failure to properly limit it in the case of rotational movement for forming or screwing can cause a fatal problem in that the screw structure may be broken. . In other words, the integrity of the thread structure is not maintained because it means that the implant is not securely anchored to the alveolar bone. Therefore, the guide bushing should be provided with the stopper to be able to properly limit the rotation of the tab or fixture.

The present invention can minimize the types of drills required for implant procedures, especially drills with induction parts used in conjunction with stents with induction bushings, and can also avoid shortening the life of the drills as the induction parts of the drills wear out. The aim is to provide a new concept of drill.

In addition, the present invention, if the stent to determine the angle and depth of puncturing the alveolar bone is not satisfactory, in particular, even if there is an error in the depth of drilling, the drilling depth by changing the position of the guide portion provided in the drill without making a new stent Another object is to provide an adjustable drill.

In addition, the present invention can suppress the phenomenon that the induction bushing to rotate in accordance with the moment caused by the rotating drill, even in the state in which the induction portion and the induction bushing of the drill in close contact with the implant, and also guided by the induction bushing It is a further object to provide a new type of induction bushing with a rotation stopper which can adequately limit the rotation of the tab or fixture to be made.

In the implant precision drill according to the present invention, a male thread portion having a predetermined length is formed along the outer peripheral surface of the shank portion of the drill, and the female thread portion corresponding to the male thread portion has a hollow cylindrical guide portion adapter formed on the inner circumferential surface of the male thread portion. It is characterized by being screwed on.

That is, the induction part of the implant precision implant drill of the present invention is completed by coupling the induction part adapter to the male thread formed in the main body of the drill, while maintaining the inner diameter of the induction part adapter of various kinds of induction part adapters varying only the outer diameter By preparing, the type of drill itself can be minimized.

Here, the thread formed in the male and female threads to have a spiral running direction having a direction opposite to the cutting rotation direction of the drill, so that the guide adapter is not easily released when the drill drills the alveolar bone, in which case the drill Since the cutting rotational direction is in the direction of the right hand thread, the threads formed in the male thread part and the female thread part are preferably formed of the left hand thread.

In addition, by forming a chamfer along the edge of the lower surface of the guide portion adapter, it is preferable to be coupled to the chamfer of the protruding stopper provided on the lower surface of the guide bushing for guiding the drill so that convergence is possible at the end of the drilling operation.

And a first flat portion having a diameter corresponding to the outer diameter of the male screw continuously on the lower side of the male threaded portion, and having a diameter corresponding to the valley diameter of the female screw continuously on the female screw portion under the inner circumferential surface of the guide part adapter. By forming the second flat part, the fixing property of the induction part adapter can be improved.

In addition, if the height of the second flat portion is greater than the height of the first flat portion, the guide portion adapter can be further entered into the lower side of the drill, and thus the drilling depth can be adjusted by adjusting the height of the second flat portion.

In addition, the induction bushing for precise implant placement according to the present invention is composed of a body having an elliptic cylinder shape, but has a through hole having a circular cross section along the longitudinal direction of the elliptic cylinder body, A stopper having a difference corner is provided, in which case a chamfer is formed at the stepped corner.

In addition, the planar portion is formed at a portion of at least one side of both sides of the ellipsoidal long axis direction of the body having the ellipsoidal cylinder shape, it is possible to effectively prevent the induction bushing to move up and down on the stent.

A coolant hole is formed on at least one side of both sides of the ellipsoidal long axis direction of the body having the ellipsoidal cylinder shape, and cools or lubricates the drill heated by friction with the induction bushing during the drilling operation through the coolant hole. The cooling water or the coolant to be supplied is supplied.

And concave fixing parts are formed on both sides of the ellipsoidal long axis direction of the upper surface of the body having an elliptic cylinder shape, and an extension bushing in which a hole having the same diameter as that of the through hole is formed therethrough and a protrusion coupled to the fixing part is formed on the lower surface thereof. By including it, it is also possible to extend the length which guides the said drill for implant precision placement.

In particular, at least one auxiliary screw thread may be formed on the upper inner circumferential surface of the through hole formed in the induction bushing, and the pitch of the auxiliary screw thread may be formed on the surface of a mechanism guided by the through hole, for example, a tab or an implant fixture. It is equal to the pitch of the male thread formed.

The auxiliary screw acid is suitably formed three at equal intervals of 120 °, wherein the plurality of auxiliary screw acid is preferably formed by one rotation each.

Precision implant device according to the present invention is completed by the stent is fixed to the implant having a drill and the ellipsoidal body shape of the implant having the above configuration, the induction bushing is the ellipsoidal body shape The branch is fixed to the stent such that both sides of the ellipsoidal long axis of the body face the buccal side of the subject. Therefore, even when the space to be implanted is narrow, since both sides of the ellipsoid shortening direction of the guide bushing are located between the teeth, the installation of the guide bushing is more free and the cross-sectional shape of the guide bushing is elliptical, so It is possible to effectively suppress the moment acting on the induction bushing by the rotary drill.

Precision implant for implant according to the present invention consists of two parts of the drill body and the guide portion adapter screwed to the shank portion of the drill, induction of various sizes by adjusting the type of guide portion adapter, for example, the outer diameter of the guide portion adapter It can be used for bushings. By varying the types of induction adapters that are easy to process, it is possible to minimize the types of drills that are relatively expensive. In addition, if the cutting parts of the drill are in good condition, the life of the drill can be extended by simply replacing the induction adapters. Therefore, this new type of implant precision drill is significantly higher than the conventional utility.

In addition, the implant precision drill according to the present invention, it is possible to adjust the drilling depth of the drill by adjusting the height of the second flat portion provided on the lower inner peripheral surface of the guide portion adapter. Therefore, even if there is some error in the installation depth of the induction bushing fixed to the stent, there is an advantage that the drilling depth can be adjusted by replacing or simply reworking the induction adapter without the need to manufacture a new stent.

In addition, the induction bushing for precise implant placement according to the present invention is composed of a body having an elliptic cylinder shape, but has a through hole having a circular cross section along the longitudinal direction of the elliptic cylinder body, It is equipped with a stopper with a recessed edge. Therefore, even when the guide portion of the drill rotates at high speed while being guided along the through hole, the guide bushing fixed to the stent has an elliptical cross section in a direction perpendicular to the drilling direction of the drill. You can suppress the rotation.

In addition, the guide bushing for precise implant placement according to the present invention is provided with at least one auxiliary screw thread on the upper surface of the inner circumferential surface of the through hole, the tab or the hole to guide the guide bushing to form a thread in the hole drilled in the alveolar bone It is possible to effectively limit the amount of rotation of the fixture to be joined while forming a thread in the. Therefore, the induction bushing of the present invention has the effect of ensuring the integrity of the thread structure formed in the alveolar bone.

In addition, the induction bushing for precise implant placement according to the present invention is fixed to the stent so that both sides of the ellipsoidal longitudinal direction of the body having the ellipsoidal body shape toward the buccal side of the subject, so that the space to be implanted is narrow Since both sides of the ellipsoidal short axis direction of the body of the induction bushing are located between the teeth, the induction bushing has an advantage of more freedom of installation.

1 is a photograph showing an inventor stent filed by the applicant of the patent application No. 2007-0107408.

2 is a view of the implant placement guide device filed by the applicant of the patent application No. 2008-0037614.

3 and 4 is a view of a drill for implant precision placement according to the present invention.

5 and 6 is a view of the induction adapter provided in the implant precision drill according to the invention.

7 and 8 is a view of the drill for implant precision implantation without the guide portion adapter shown in Figures 5 and 6 coupled.

9 and 10 are views of the induction bushing for precise implant placement according to the present invention.

Figure 11 is a view of the extension bushing coupled to the induction bushing for precise implant placement according to the present invention.

12 is a view showing a case in which three auxiliary threads are formed in the induction bushing for precise implant placement according to the present invention.

** Explanation of symbols for main parts of drawings **

100: drill precision implants 110: shank portion

112: male thread portion 114: first flat portion

116: cutting part 120: induction part adapter

122: female thread 124: chamfer

126: second flat portion

200: Induction bushing for precise implant placement

210: body 212: through hole

214: stopper 216: chamfer

218: flat part 220: cooling water hole

222: fixing part 224: auxiliary screw thread

300: extension bushing 310: through hole

312: protrusion

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the implant 100 for precision implantation according to the present invention.

As shown in Figure 3 to 8, the drill 100 for implant precision placement according to the present invention is a cutting portion 116 is formed with a cutting edge for forming a hole in the shank portion 110 and the alveolar bone that is mounted to the drilling machine. In particular, in the present invention, a male thread portion 112 having a predetermined length is formed along the outer circumferential surface of the shank portion 110 of the drill 100. In addition, a hollow cylindrical guide part adapter 120 having a female thread part 122 corresponding to the male thread part 112 formed on an inner circumferential surface thereof is screwed to the male thread part 112, thereby creating an induction part for precisely implanting the implant.

That is, the induction part of the implant precision implant drill 100 of the present invention is completed by coupling the induction part adapter 120 to the male screw part 112 formed in the main body of the drill 100, the inner diameter of the induction part adapter 120 is constant By maintaining a variety of induction adapters 120 of various kinds of different only in the outer diameter it is possible to actively respond to the induction bushing having a variety of diameters.

Here, by having the thread formed in the male screw portion 112 and the female screw portion 122 to have a spiral running direction having a direction opposite to the cutting rotation direction of the drill 100, when the drill drills the alveolar bone, the guide part adapter easily It is desirable not to loosen. In this case, in most cases, the cutting rotation direction of the drill 100 is a right screw direction, and thus, the thread formed in the male screw part 112 and the female screw part 122 is preferably formed as a left screw.

In addition, by forming the chamfer 124 along the edge of the lower surface of the guide portion adapter 120, to be coupled to the chamfer 216 of the protruding stopper provided on the lower surface of the guide bushing to guide the drill 100 to be described later Therefore, it is desirable to have convergence at the end of the drilling operation.

A first flat portion 114 having a diameter corresponding to the outer diameter of the male screw is continuously formed below the male threaded portion 112, and the female screw portion 122 is disposed below the inner circumferential surface of the guide part adapter 120. By continuously forming the second flat portion 126 having a diameter corresponding to the valley diameter of the female screw, the guide part adapter 120 may be firmly fixed at the correct position.

In particular, if the height of the second flat portion 126 is greater than the height of the first flat portion 114, the induction part adapter 120 may cause the induction part adapter 120 of the drill 100 to be larger than the height of both

flat portions

114 and 126. You can go further down. Therefore, the depth of puncture of the alveolar bone can be adjusted by adjusting the relative height of the second flat portion 126 based on the height of the first flat portion 114.

flat portions

9 and 10 show a new type of implant induction bushing 200 for use in precision implant placement described above.

Compared with the induction bushing fixed to the stent of Patent Application No. 2007-0107408 shown in FIG. 1, the biggest feature of the induction bushing 200 for implant precision placement according to the present invention is that the overall shape is an elliptic cylinder. .

That is, the induction bushing 200 of the present invention is formed of a body 210 having an elliptic cylinder shape, but has a through hole 212 having a circular cross section along the longitudinal direction of the elliptic cylinder body, and the through hole. The bottom of 212 is provided with a stopper 214 having a stepped edge. Therefore, even when the guide adapter 120 of the drill is rotated at high speed while being guided along the through hole 212, the guide bushing 200 fixed to the stent has a cross-sectional shape in a direction perpendicular to the drilling direction of the drill 100. Since the elliptical shape, it is possible to suppress the induction bushing 200 to rotate together with the rotation of the drill 100. Incidentally, the elliptic cylinder shape also has an effect of making it easier to handle the induction bushing 200 having a small size.

In addition, a chamfer 216 may be formed at the stepped edge of the stopper 214, which is in contact with the chamfer 124 formed along the edge of the lower surface of the guide part adapter 120 in the drill 100. This is to cause convergence at the end of the drilling operation.

In addition, the planar portion 218 may be formed at a portion of at least one side of both sides of the ellipsoidal long axis direction of the body 210 having the ellipsoidal cylinder shape. This is to improve the up and down fixability of the induction bushing (200). Of course, it is more preferable that the planar portions 218 are respectively formed on a part of both sides of the ellipsoidal long axis.

In addition, a coolant hole 220 is formed on at least one side surface of both sides of the ellipsoidal long axis of the body 210 having the ellipsoidal body shape. The coolant hole 220 supplies a coolant for cooling the drill 100 heated by friction with the through-hole 212 of the induction bushing 200 during the drilling operation of the alveolar bone or a cooling oil for performing a lubricating function. It is a hole. Cooling water hole 220 is preferably formed at a 1/2 or 1/3 position from the bottom surface of the body 210, which is the coolant or coolant flowing into the coolant hole 220 is the induction adapter ( 120) to spread throughout. If necessary, in order to increase the cooling efficiency, a plurality of cooling water holes 220 may be provided.

In addition, as shown in FIG. 11, concave fixing portions 222 are formed on both sides of the upper surface of the ellipsoidal ellipsoidal body in the ellipsoidal longitudinal direction of the upper surface of the ellipsoidal cylinder shape, and have a hole having the same diameter as that of the through hole 212. The 310 is penetrated and the protrusion 312 coupled to the fixing part 222 further connects the extension bushing 300 formed on the lower surface thereof, thereby extending the length for inducing the drill 100 for implant precision placement. It is also possible.

Another feature of the induction bushing 200 according to the present invention, at least two auxiliary screw thread 224 is formed on the inner circumferential surface of the upper end of the through hole 212 formed in the induction bushing 200 at equal intervals in the circumferential direction. Is that it is. This is because, as mentioned above, the stopper 214 provided in the induction bushing 200 can only limit the longitudinal movement of the tap or fixture guided to the induction bushing 200, so A new configuration for limiting the total amount is required, and the configuration for realizing this is the auxiliary screw thread 224.

The pitch of the auxiliary screw thread 224 is formed to be equal to the pitch of the male thread thread formed on the surface of the mechanism guided by the through hole 212. The auxiliary thread thread 224 is one or more suitable numbers along the circumferential direction. If the auxiliary screw thread 224 is formed in a plurality of two or more, it is preferable to achieve equal intervals along the circumferential direction.

The role of the secondary thread 224 is to limit the amount of rotation of the instrument, such as the tap or fixture on which the external thread is formed, to be within a certain error probability. If the case in which two auxiliary threads 224 are formed as an example, the auxiliary screw thread 224 is rotated after the auxiliary screw thread 224 is caught even if the tap or fixture rotates beyond the target rotation amount. Only a few more turns, moreover, if there are two secondary threads 224, the maximum rotational range is only more or less than the target amount in the range of 1/2 the number of revolutions of the secondary thread 224. It is possible to limit the amount of rotation of the instrument to be within a certain error probability.

Preferably, the three auxiliary screw threads 224 are formed at equal intervals of 120 °, and the plurality of auxiliary screw threads 224 are each formed by one rotation. In this case, if the lead of the instrument and the auxiliary screw thread 224 is 1.5 mm, the amount of rotation is limited to an error range within ± 0.5 mm, and this degree of error is evaluated to be sufficiently acceptable during the implant procedure.

When explaining the overall configuration of the implant precision implantation device including the drill 100 for implant precision insertion with the guide portion adapter 120, the induction bushing 200 to guide the drill 100 as follows. Here, the description of the configuration of the implant precision implantation drill 100 and the induction bushing 200 and the description of the stent (not shown) to which the induction bushing 200 is fixed will be omitted to overlap with the contents of the preceding portion. do.

In the implant precision implantation device according to the present invention, a male thread portion 112 having a predetermined length is formed along the outer peripheral surface of the shank portion 110 of the drill 100 and a female thread portion 122 corresponding to the male thread portion 112 is provided. The hollow cylindrical guide portion adapter 120 formed on the inner circumferential surface is composed of a stent in which the implant precision drilling drill 100 is screwed to the male thread portion 112, and the implant precision bushing induction bushing 200 is installed. .

At this time, the induction bushing 200 is fixed to the stent such that both sides of the long axis of the ellipsoidal surface of the body 210 having the ellipsoidal body shape toward the buccal side of the subject. Therefore, even when the space to be implanted is narrow, there is an advantage that the degree of freedom in installation of the induction bushing 200 is increased because both sides of the ellipsoid short axis direction of the body 210 of the induction bushing 200 is located between the teeth. . In addition, if necessary, the length of the drill 100 may be extended by coupling the extension bushing 300 to the upper surface of the induction bushing 200.

As described above with reference to the accompanying drawings, the drill 100 for implant precision placement and the induction bushing 200 according to the present invention, the present invention is not limited by the embodiments and drawings disclosed herein, Various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention.

The present invention is to prevent the phenomenon that the induction bushing to rotate together when drilling the drill as much as possible while at the same time the implant placement position is located between the narrow tooth spacing for precise implant implant and drill bushing for easy installation The present invention relates to a precise implantation device using the same, and may be used more effectively in the dental related field.

Claims

In the drill for drilling for implant treatment,

A male thread portion having a predetermined length is formed along the outer peripheral surface of the shank portion of the drill, and a hollow cylindrical guide portion adapter having a female thread portion corresponding to the male thread portion is formed on the inner circumferential surface thereof and is screw-coupled to the male thread portion. drill.
The method according to claim 1,

And a screw thread formed in the male screw portion and the female screw portion has a spiral running direction having a direction opposite to the cutting rotation direction of the drill.
The method according to claim 2,

The drill for implant placement, characterized in that the thread formed on the male thread and the female thread is a left thread.
The method according to claim 1,

Precision implant drill, characterized in that the chamfered portion is formed along the edge of the lower surface of the guide portion adapter.
The method according to claim 1,

A first flat portion having a diameter corresponding to the outer diameter of the male screw is formed continuously below the male threaded portion, and has a diameter corresponding to the valley diameter of the female screw continuous to the female screw portion below the inner circumferential surface of the guide part adapter. Drill for implant placement, characterized in that the second flat portion is formed.
The method according to claim 5,

The implant for precise implantation, characterized in that the height of the second flat portion is larger than the height of the first flat portion.
An implant made of a body having an ellipsoidal cylinder shape, wherein a through hole having a circular cross section is formed along the longitudinal direction of the elliptic cylinder, and a bottom end of the through hole is provided with a stopper having a stepped edge. Induction bushing for precision placement.
The method according to claim 7,

Induction bushing for precision implants, characterized in that the chamfered portion is formed in the stepped corner.
The method according to claim 7,

Induction bushing for precision implants, characterized in that the planar portion is formed on a portion of at least one side of both sides of the ellipsoidal long axis direction of the body having the ellipsoidal cylinder shape.
The method according to claim 7,

An induction bushing for precise implant placement, characterized in that a coolant hole is formed on at least one side of both sides of the ellipsoidal long axis of the body having the ellipsoidal body shape.
The method according to claim 7,

Concave fixing parts are formed on both sides of the ellipsoidal long axis direction of the upper surface of the body having an elliptic cylinder shape, and further comprising an extension bushing formed on the lower surface of the protrusion formed through the hole having the same diameter as the through hole and coupled to the fixing part. Induction bushing for precise implant placement, characterized in that.
The method according to claim 7,

At least one auxiliary screw thread is formed on the upper inner circumferential surface of the through hole, and the pitch of the auxiliary screw thread is the same as the pitch of the male thread formed on the surface of the mechanism guided by the through hole. .
The method according to claim 12,

Induction bushing for precise implant placement, characterized in that the three auxiliary threads are formed at equal intervals of 120 °.
The method according to claim 12,

Induction bushing for precision implant implant, characterized in that the plurality of auxiliary screw thread is formed by one rotation each.
Drill for implant precision placement according to any one of claims 1 to 6; And

Stents are installed in accordance with any one of claims 7 to 14, the stent is installed so that both sides of the long axis direction of the ellipsoidal surface of the body having an ellipsoidal body shape of the induction bushing is fixed toward the buccal side; Implant precision placement device.