WO2010021478A2

WO2010021478A2 - Dental implant fixture

Info

Publication number: WO2010021478A2
Application number: PCT/KR2009/004590
Authority: WO
Inventors: 박광범; 류경호
Original assignee: 주식회사 메가젠임플란트
Priority date: 2008-08-20
Filing date: 2009-08-17
Publication date: 2010-02-25
Also published as: WO2010021478A3; KR100981719B1; KR20100022898A; TW201008553A; TWI432183B

Abstract

A dental implant fixture is disclosed. The dental implant fixture of the present invention comprises a body fixture part and a screw part. The screw part is spirally formed on the outer surface of the body fixture part. The height of the screw thread from the body fixture part is differently formed in the screw part. According to the present invention, even though an alveolar bone has a calabash shape, of which the bottom area is rather widely formed while the entrance is unusually narrow, the fixture can be easily implanted to a desired site without performing any separate medical procedure. In addition, since bone fusion is easily performed due to excellent fixation, the failure rate of implant surgery can be minimized.

Description

Dental Implant Fixtures

The present invention relates to a fixture of a dental implant, and more particularly, even if the alveolar bone is of a narrow shape that the entrance is not generally narrow, but the lower region is rather wide, it is a separate medical method, etc. The present invention relates to a fixture of a dental implant that can be easily implanted into a desired implantation position without mobilization, and also has excellent fixation force so that bone fusion can be easily achieved, thereby preventing the failure rate of the implant procedure as much as possible.

Implants are originally meant to be a substitute for recovery when tissue is lost, but dentists refer to a series of procedures for implanting artificial teeth.

To replace the lost roots (roots), a fixture made of titanium, etc., which is not rejected by the human body, is planted in the alveolar bone where the teeth fall out, and the artificial teeth are fixed to restore the function of the teeth. It is a procedure to make.

In the case of general prosthetics or dentures, the surrounding teeth and bones are damaged after time, but the implants do not damage the surrounding dental tissues.

Artificial tooth treatment (also referred to as implants or implant procedures) is performed by drilling a placement position using a predetermined drill, placing the fixture in the alveolar bone, fusion fused to the bone, and then joining the abutment to the fixture. This is done by putting the final prosthesis on the abutment.

These implants enhance the function of dentures, improve the aesthetics of dental prosthetic restorations, as well as dissipate excessive stress on surrounding supportive bone tissue, as well as single missing restorations. And also helps stabilize the dentition.

Fixtures implanted for the first time during implantation usually have a straight screw shape and are classified into small, standard and large sizes according to their size. Thus, the operator selects and uses the size of the fixture in consideration of the shape of the alveolar bone and the shape and space of the periphery of the position where the fixture is to be placed.

On the other hand, fixtures having only substantially different sizes and having a substantially straight screw shape are commonly applied to patients having a conventional oral structure.

However, if the oral structure is not common, especially when the shape of the alveolar bone where the fixture is to be placed has an unusually narrow entrance, while the lower region has a rather wide gourd shape, a commonly known straight fixture is used. Difficult to do In other words, despite these conditions, it is difficult to achieve the desired fixation force when the conventional fixture is placed, and bone fusion does not proceed smoothly.

In this case, since no suitable fixture has been developed in the related art, since a straight fixture is placed after further mobilizing medical methods such as widening the entrance, the procedure cost and time increase, and of course, inconvenience to the operator. And causing a variety of lung lesions, such as causing fear of the procedure to the patient.

Therefore, the alveolar bone in which the fixture is to be placed has a narrow entrance, but the lower region is rather wide, but it may be a gourd, or the alveolar bone and its periphery may have a different shape or space. Since it can be easily implanted into a desired implantation position without mobilizing a medical method, and also excellent fixation force can be easily achieved fusion fusion, the development of a fixture of the dental implant that can prevent the maximum failure rate of the implant procedure is required.

It is an object of the present invention, the alveolar bone can be easily placed in the desired placement position even without the use of separate medical methods, even if the inlet is not narrow in general, but the lower region is rather wide gourd shape, etc., In addition, it is to provide a fixation of the dental implant that can prevent the failure rate of the implant procedure as much as possible because it can easily achieve fusion fusion.

According to the present invention, the alveolar bone can be easily placed in the desired placement position without additional medical methods even if the inlet is not narrow in general, but the lower region is formed in a wide gourd shape. Excellent fixation force allows easy bone fusion, which can prevent the failure rate of the implant procedure as much as possible.

1 is a perspective view schematically showing a process of implantation of the fixture of the dental implant according to the first embodiment of the present invention.

2 is a perspective view of a fixture of a dental implant according to a first embodiment of the present invention.

3 is a side view of FIG. 2.

4 is a state diagram of use of the fixture of the dental implant according to the first embodiment of the present invention.

5 is a front view of a fixture of a dental implant according to a second embodiment of the present invention.

6 and 7 are plan and bottom views, respectively, of FIG.

8 is a front view of a fixture of a dental implant according to a third embodiment of the present invention.

9 and 10 are plan and bottom views, respectively, of FIG.

11 is a front view of a fixture of a dental implant according to a fourth embodiment of the present invention.

12 and 13 are plan and bottom views of FIG. 11, respectively.

14 is a front view of a fixture of a dental implant according to a fifth embodiment of the present invention.

15 and 16 are plan and bottom views, respectively, of FIG.

The object, according to the invention, the body portion; And it is achieved by the fixture of the dental implant, characterized in that it comprises a screw thread formed on the outer surface of the body portion is formed with a different height of the mountain from the body portion.

Here, the screw portion, the initial entry screw portion formed in the lower end of the body portion; A final fixing screw portion formed at the top end of the body portion; And a spiral connection screw portion connecting the initial entry screw portion and the final fixing screw portion between the initial entry screw portion and the final fixing screw portion.

One region of the side end portion of the at least one screw portion of the final fixing screw portion and the spiral connecting screw portion may be curved.

A cross section of the side end region of the final fixing screw portion and the spiral connecting screw portion may have a straight section formed in the upper and lower regions, and an arc section extending from the point where the straight section ends.

The screw portion may be provided in the body portion such that the height of the mountain gradually decreases from the central region of the body portion to both end regions of the body portion.

The mount height of the threaded portion may range from 0.5 mm to 1.5 mm.

The initial entry screw portion may be sharper than the final fixing screw portion and the spiral connection screw portion.

The body portion may have a tapered shape in which the cross-sectional diameter gradually decreases downward from the head of the upper portion.

A portion of the body portion opposed to the head may be further formed with a convex processing portion for an implantation position guide, the center of which is convexly processed relative to the other surface to guide the implantation position.

The threaded portion may be provided in the body portion such that the height of the mountain gradually increases from the upper region to the lower region except for the initial entry screw portion.

A non-screw section in which the screw portion is not formed may be further formed in an upper region of the body portion.

It may further include a cutting edge portion (cutting edge portion) formed in the screw portion.

The cutting edge portion may be formed in the screw portion having a direction inclined to one side with respect to the longitudinal direction of the body portion.

The cutting edge portion may be formed symmetrically on both sides of the body portion relative to the body portion.

It may further include an integrated abutment portion formed integrally with the upper region of the body portion.

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by explaining preferred embodiments of the present invention with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

As shown therein, a large number of teeth 12 are arranged in the gum 11. Teeth 12 are primary digestive means for crushing food and sending them to the stomach, but may vary from person to person, but usually have about 28.

If any of the teeth 12 of these teeth 12 is lost (when the first molar is missing), the lost tooth 12 is not only aesthetically deteriorate but also inevitably considerably uncomfortable to chew food.

Thus, the fixture 100 is implanted as a means to replace the root 12a of the tooth 12 on the gum 11 of the lost tooth 12. Although not shown in detail in FIG. 1, the fixture 100 is implanted in the alveolar bone in the gum 11, and the drill drilling operation is preceded for the implantation of the fixture 100 before implantation.

The fixture 100 may be made of titanium (Ti, Titanium) or titanium (Ti) alloy is not rejected to the human body.

Meanwhile, as described above, even in the related art, a fixture (not shown) is implanted as a means for replacing the root 12a of the tooth 12 in the alveolar bone of the gum 11 where the tooth 12 is lost. Has come. Conventional fixtures have a straight screw shape and are therefore suitable for application to patients with conventional oral structures.

However, if the shape of the alveolar bone is not as narrow as the entrance, but the lower region is rather wide gourd shape formed, such as not only to obtain the desired fixing force, but also because of the difficulty of smoothly progressing bone fusion, etc. Difficult to use fixtures

Therefore, the present invention proposes a new improved structure fixture 100 that can be suitably applied even in such a situation.

For reference, the fixture 100 of the present invention, which will be described below, may be used when the first implant is performed or directly placed on the corresponding alveolar bone without replenishing a predetermined bone replacement material at the damaged part when the procedure fails. It may be used when doing so.

2 is a perspective view of a fixture of a dental implant according to a first embodiment of the present invention, FIG. 3 is a side view of FIG. 2, and FIG. 4 is a view of a fixture of a dental implant according to a first embodiment of the present invention. It is a state of use.

As shown in these figures, the fixture 100 of the present embodiment is formed spirally on the body portion 120 and the outer surface of the body portion 120, the height of the mountain from the body portion 120 is formed differently It includes a screw portion 130. Here, the height of the mountain refers to the distance from the outer surface of the body portion 120 to the side end of the screw portion 130.

Body portion 120 is a portion forming a central stem in the fixture 100 of the present embodiment. Since the fixture 100 is implanted in the direction of the arrow of FIG. 1, the body part 120 has a substantially straight structure.

In the conventional fixture, the body portion (not shown) was a cylindrical structure having a cylindrical type having the same cross-sectional diameter all along the length direction, whereas in the fixture 100 of the present embodiment, the body portion 120 is fixed along the length direction. It has an angle and a tapered shape.

That is, in the fixture 100 of the present embodiment, the body portion 120 is manufactured to have a tapered shape in which the cross-sectional diameter gradually decreases from the head 121 of the upper portion to the convex portion 123 for guiding the lower position. . As the body portion 120 is manufactured in such a form, there is an advantage in that the fixture 100 is easily placed. Here, the cross-sectional diameter of the body portion 120 may have a thickness of about 5 mm to 8 mm, the scope of the present invention need not be limited to its numerical value.

Prior to the description of the screw portion 130, the head 121 and the convex portion 123 for the locating position guide will be described first. First, the head 121 is formed on the upper portion of the body portion 120. It is used as a place where abutment (not shown) is combined. Therefore, the thread 121a of a constant pitch is formed in the inside of the head 121.

Convex portion 123 for the position guide is provided on the opposite side of the head 121 in the body portion 120. The convex processing portion 123 for the placement position guide is a portion that first contacts the inlet region of the alveolar bone when the fixture 100 is placed. Therefore, in the case of the present embodiment, this portion is not flat as in the conventional fixture, and its center portion is processed to be convex compared with the other surface.

As such, the convex processing portion 123 for the placement position guide, which is centrally convex compared to the other surface, contacts the inlet region of the alveolar bone for the first time when the fixture 100 is placed, and together with the role of positioning the fixture, the fixture 100 It also serves as a guide to accurately position the implantation position.

The tip of the convex portion 123 for the insertion position guide is advantageously processed sharply, as shown, but the tip does not necessarily have to be sharply processed, and if it has a generally rounded 'V' shape, it is sufficient. It will be able to function properly.

On the other hand, as the conventional fixture has a straight screw shape, the thread portion (not shown) formed in the conventional fixture has all the same height of the mountain.

However, as shown in FIG. 4, the fixture 100 of the present embodiment has a fixed force after being placed, even though the shape of the alveolar bone is not as narrow as its mouth is generally narrow while the lower region has a wider shape. The shape of the screw portion 130 has a different structure from the conventional one so that it can be easily achieved by fusion fusion.

That is, in the fixture 100 of the present embodiment, the threaded portion 130 spirally formed on the outer surface of the body portion 120 is formed from the center of the body portion 120 toward both end portions of the body portion 120. It is provided in the body portion 120 so that the height is gradually reduced.

Referring to FIG. 3, the threaded portion 130 is wound in five wheels with a predetermined pitch interval along the length of the body portion 120 in the present embodiment. At this time, the pitch spacing between the threaded portion wound around five wheels 130 may be formed to be wider than conventional to provide a stronger fixing force, the pitch spacing between the threaded portion 130 is approximately 1 to 1.75 pitch You can have a (Pitch) interval. However, the scope of the present invention need not be limited to the numerical values thereof.

As in the present embodiment, when the screw unit 130 is arranged by winding five wheels, the screw unit 130 wound by five wheels may be divided as follows.

That is, the screw portion 130 wound by five wheels is formed at the lowermost end of the body portion 120 and the initial entry screw portion 130a connected to the convex processing portion 123 for the insertion position guide, and the top end of the body portion 120. A final fixing screw portion 130e formed at the first screw thread 130e and connected to the head 121, and an initial entry screw portion 130a and a final fixing screw portion 130e between the initial entry screw portion 130a and the final fixing screw portion 130e. Spiral connection screw portions (130b, 130c, 130d) for connecting.

Looking at the height of the mountain for the screw portion (130a ~ 130e), the height of the peak of the spiral connection screw portion 130c located in the middle of the spiral connection screw portion (130b, 130c, 130d), the spiral connection screw The height of the peak becomes smaller toward both ends of the body portion 120 based on the portion 130c, and the height of the peak of the final fixing screw part 130e is formed to be the smallest. In this embodiment, the peak height of the screw portions 130a to 130e may range from 0.5 mm to 1.5 mm, so the maximum peak height is 1.5 mm.

When connecting the outer surface of the screw portions (130a ~ 130e) may have a jar structure, due to this structural or morphological features, it is good to apply to the alveolar bone having a wide lower area than the inlet as shown in Figure 4, In addition, after implantation, bone fusion may proceed more smoothly in a large area while providing a strong fixing force.

The initial entry screw portion 130a may be sharper than the final fixing screw portion 130e and the spiral connecting

screw portions

130b, 130c, and 130d as shown. Unlike the other screw portions 130b to 130e, the initial entry screw portion 130a may be referred to as a structure for ease of placement, rather than a structure that provides a strong fixing force.

However, the one end portion region of the other screw portions 130b to 130e, that is, the final fixing screw portion 130e and the spiral connecting

screw portions

130b, 130c, and 130d, is curved as shown in part A of FIG. Can be. That is, the cross section of the side end region of the last fixed screw portion 130e and the spiral connecting

screw portions

130b, 130c and 130d extends from the point where the straight section L formed in the upper and lower regions and the straight section L end. It has an arc section C formed. In this case, the straight sections L formed in the upper and lower regions are not necessarily parallel to each other, but are not necessarily so. And the arc section (C) may be a shape of a substantially complete circle, or may be a shape in which one side is sharply processed from the shape of the circle. When having such a structure, the circular arc section (C) is not only advantageous to be fused with the bone in a large area, it is possible to provide a strong support (or fixing force) for the implanted fixture (100).

Looking briefly about the implant procedure using the fixture 100 having such a configuration, first, a drilling position is drilled using a predetermined drill. Then, as shown in FIG. 4, the fixture 100 of the present embodiment is disposed at the implantation position, and the fixture 100 is inserted into the alveolar bone.

As shown in FIG. 4, the alveolar bone has a narrowly defined inlet, while the lower region has a wide gourd shape, but the convex portion 123 for guiding the placement position of the fixture 100 in the drilled inlet region is formed. When the fixture 100 is pressed and the pressure 100 is rotated in a right direction, for example, the screw parts 130 are forcibly inserted through the inlet area while the fixture 100 is rotated. At the position corresponding to the shape of the alveolar bone can be fixed.

After the time when the fusion to the fixture 100 progresses, after the abutment is coupled to the head 121 of the fixture 100, the implant procedure is completed by putting the final prosthesis on the abutment.

As such, according to the present embodiment, the alveolar bone may be easily placed in a desired placement position without additional medical method even if the entrance is not generally narrow while the lower region is formed like a gourd. In addition, it is also possible to achieve a high degree of fixation to facilitate bone fusion, thereby preventing the failure rate of the implant procedure as much as possible.

5 is a front view of a fixture of a dental implant according to a second embodiment of the present invention, and FIGS. 6 and 7 are a plan view and a bottom view of FIG. 5, respectively.

As shown in these drawings, the fixture 200 of the dental implant according to the present embodiment is formed in a spiral on the body portion 220 and the outer surface of the body portion 220, the acid from the body portion 220 The height is substantially the same as the first embodiment in that the threaded portion 230 is formed to be different from each other, overlapping description of the same parts will be avoided.

However, unlike the first embodiment described above, the screw portion 230 in the fixture 200 of the dental implant of the present embodiment is a lower region in the upper region of the body portion 220 except for the initial entry screw portion 230a. It is provided in the body portion 220 so as to gradually increase the height of the mountain.

In this case, unlike the illustrated, the thickness (width) of the mountain may also be formed to increase from the upper region to the lower region of the body portion 220. In addition, the shape of the side end of the screw part 230 has the same structure as that described in the first embodiment (see part A in FIG. 3).

In the fixture 200 of the dental implant according to the present embodiment, a non-screw section 220a in which the screw portion 230 is not formed is further formed in the upper region of the body portion 220. Unlike the drawing, the non-screw section 220a may be formed longer or shorter according to the shape of the alveolar bone in which the fixture 200 is placed. The non-screw section 220a helps to fix the fixture 200 by forming a wide space for bone fusion.

On the other hand, the cutting edge portion 232 is further formed on the screw portion 230. The cutting edge portion 232 serves to facilitate the placement of the fixture 200 due to the sharp tip.

The cutting edge portion 232 may be formed in the screw portion 230 has a direction inclined to one side with respect to the longitudinal direction of the body portion 220, in this case, the cutting edge portion 232 is shown in FIGS. As shown in, the body portion 220 may be formed to be symmetrical with each other on both sides of the body portion 220. Of course, this content may not limit the scope of the present invention, the cutting edge portion 232 does not necessarily have to be formed symmetrically on both sides of the body portion 220.

Even if the fixture 200 of the dental implant of this structure is used, the alveolar bone is not narrow in shape but the lower area is rather wide, even if it has a gourd shape, etc. It can be easily implanted in the desired placement position, it is also sufficient to provide the effect of the present invention that can prevent the failure rate of the implant procedure to the maximum because it is easy to achieve the bone fusion excellent fixation force.

Meanwhile, the

fixtures

300, 400, and 500 of the dental implants to be described below with reference to FIGS. 8 to 13 are the same as the fixtures 200 of the dental implants described with reference to FIGS. The description will be omitted and the reference numerals will be given the same reference numerals of FIGS. However, in the case of the

fixture

300, 400, 500 of the dental implant shown in Figures 8 to 13, the structure of the upper region of the body portion 220 is different from the second embodiment will be described.

8 is a front view of a fixture of a dental implant according to a third embodiment of the present invention, and FIGS. 9 and 10 are a plan view and a bottom view of FIG. 8, respectively.

Referring to these drawings, in the case of the fixture 300 of the dental implant according to the present embodiment, the upper region structure of the body portion 220 has an internal portion in which one region of the abutment (not shown) is inserted and coupled inwardly. It is applied to an internal type head 321. In this case, the internal type head 321 and the body portion 220 may be manufactured in a unitary structure with each other. As shown, the head 321 and the body portion 220 have the inclined surface S therebetween. It may be formed stepped.

11 is a front view of a fixture of a dental implant according to a fourth embodiment of the present invention, and FIGS. 12 and 13 are a plan view and a bottom view of FIG. 11, respectively.

Referring to these drawings, in the case of the fixture 400 of the dental implant according to the present embodiment, the upper region structure of the body portion 220 is inserted into one region of the abutment of the abutment shown in the inner side but protrudes upward on the upper surface It is applied to an external type head 421 having a protruding portion 421a.

As a result, the fourth embodiment and the third embodiment have a structural difference in the presence or absence of the protrusion 421a, and the rest of the configuration and operation are the same.

14 is a front view of a fixture of a dental implant according to a fifth embodiment of the present invention, and FIGS. 15 and 16 are a plan view and a bottom view of FIG. 14, respectively.

Referring to these drawings, in the case of the fixture 500 of the dental implant according to the present embodiment, an integral abutment portion 521 is formed in the upper region of the body portion 220.

In the case of the fixture 500 in which the integrated abutment 521 is formed as in this embodiment, there is an advantage in that an operation of separately combining the abutment (not shown) after the fixture 500 is placed may be omitted.

Although the cutting edge part 232 (refer FIG. 5) is not formed in the figure of this embodiment, you may form the cutting edge part 232 (refer FIG. 5).

As described above, the present invention is not limited to the described embodiments, and various modifications and changes can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to be belong to the claims of the present invention.

The present invention can be used in dental implant procedures.

Claims

Body portion; And

Fixture of the dental implant, characterized in that it comprises a screw thread is formed spirally on the outer surface of the body portion is formed with a different height of the mountain from the body portion.
The method of claim 1

The screw portion,

An initial entry screw portion formed at the lowest end of the body portion;

A final fixing screw portion formed at the top end of the body portion; And

And a spiral connection screw portion connecting the initial entry screw portion and the final fixation screw portion between the initial entry screw portion and the final fixation screw portion.
The method of claim 2,

Fixing a dental implant, characterized in that the one end portion of the end portion of the at least one screw portion of the screw and the screw screw connection is curved.
The method of claim 3,

A cross section of the side end region of the final fixing screw portion and the spiral connecting screw portion has a straight section formed in the upper and lower regions and an arc section extending from the point where the straight section ends. .
The method of claim 1,

The screw unit is a fixture of the dental implant, characterized in that provided in the body portion so that the height of the mountain gradually decreases from the central region of the body portion to both end regions of the body portion.
The method of claim 5,

The mount height of the screw portion is a fixture of a dental implant, characterized in that it has a range of 0.5 mm to 1.5 mm.
The method of claim 2,

The initial entry screw portion is a fixture of a dental implant, characterized in that the processing is sharper than the final screw portion and the screw thread connection.
The method of claim 1,

The body portion of the dental implant, characterized in that it has a tapered shape that the cross-sectional diameter gradually decreases downward from the upper head.
The method of claim 8,

Fixture of the dental implant, characterized in that the convex processing portion for guiding the insertion position guide portion is further formed in the body portion facing the head is convex than the other surface.
The method of claim 1,

The screw portion of the dental implant, characterized in that provided in the body portion so that the height of the mountain gradually increases from the upper region to the lower region, except for the initial entry screw portion.
The method of claim 1,

Fixture of the dental implant, characterized in that the non-screw section is not formed in the upper portion of the body portion is not formed.
The method of claim 1,

Fixing dental implant further comprises a cutting edge portion (cutting edge portion) formed in the screw portion.
The method of claim 12,

The cutting edge portion of the dental implant, characterized in that formed in the screw portion having a direction inclined to one side with respect to the longitudinal direction of the body portion.
The method of claim 13,

The cutting edge portion of the dental implant, characterized in that formed on both sides of the body portion symmetrical with respect to the body portion.
The method of claim 1,

Fixture of the dental implant further comprises an integral abutment formed integrally in the upper region of the body portion.