KR100842318B1 - Sleeves for dental implants and dental implants having them - Google Patents

Abstract

Sleeves for dental implants and dental implants having the same are disclosed. The dental implant of the present invention is disposed in an upper portion of a fixture embedded in the alveolar bone, and is formed in a closed loop shape of a cross section that is substantially continuous over the entire circumference along the rim, and at least a part of an outer wall of the dental implant. Abutment having an outer contact coupling portion provided in the; And a sleeve having a sleeve body to which an artificial dental crown is coupled to at least a portion of the outer wall, and an inner contact coupling portion formed inside the sleeve body and coupled to the outer contact coupling portion of the abutment. According to the present invention, the dental cement can be used to combine the artificial crown as well as to facilitate the removal of the artificial crown to the abutment can facilitate the repair when the artificial crown needs to be repaired or Alternatively, it can be used as a means to change the size and shape of the rented land prepared.

Description

Titanium Sleeve for Dental Implant and Dental Implant Having The Same}

1 is an exploded perspective view of a dental implant according to an embodiment of the present invention.

FIG. 2 is a front view of combined components of the dental implant of FIG. 1. FIG.

3 is a cross-sectional view of the dental implant of FIG. 2.

4 is a front view and a cross-sectional view of the sleeve shown in FIG.

5 is a cross-sectional view of a dental implant according to another embodiment of the present invention.

6 is a cross-sectional view of a dental implant according to another embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

1: dental implant 10: fixture

20: abutment 22: outer inclined contact coupling portion

25: wing portion 27: rotation stopping groove

30: artificial crown 40: sleeve

41: inner inclined contact coupling portion 48: shielding area

50: Dental Cement

The present invention relates to a dental implant sleeve and a dental implant having the same, and more particularly, to a procedure for joining an artificial dental crown using a dental cement, as well as having a simple coupling structure, The present invention relates to a dental implant sleeve and a dental implant having the same, which can be detached between abutments.

Implant (implant) refers to a substitute that is originally restored when human tissue is lost, but in the dentist refers to the implantation of artificial teeth. In order to replace the lost root (root), a tooth root made of titanium (titanium), which is not rejected by the human body, is planted in the alveolar bone where the tooth falls out, and the artificial tooth is fixed to restore the function of the tooth.

In the case of general prosthetics or dentures, the surrounding teeth and bones are damaged over time, but the implants do not damage the surrounding dental tissues, and they have the advantage that they can be used semi-permanently because they have the same function or shape as natural teeth and do not cause tooth decay.

Implants also enhance the function of dentures and improve the esthetic aspects of dental prosthetic restorations, as well as in single missing restorations. Furthermore, it disperses excessive stress on surrounding supportive bone tissue and helps stabilize teeth.

Implant procedures performed in the dentistry are divided into the surgical process of implanting implants in the gum bone, that is, the alveolar bone, and the prosthetic process of installing artificial teeth by connecting the abutment to the planted implant.

There may be a variety of methods of implantation such as described below. The implant procedure described below is a fixture level impression method that connects impression copings in the oral cavity and completes the model in the oral cavity when the impression is taken in the prosthetic process.

First, grooves corresponding to fixture dimensions are formed through drilling and tapping processes in the alveolar bone, and a mount is mounted on the fixture. Then, the fixture and the mount are embedded in the alveolar bone using the surgical hand piece and then the mount is removed from the fixture, thereby embedding the fixture in the alveolar bone. The first operation is completed by fastening the cover screw to the upper part of the fixture to seal the fixture.

The lid screw blocks bacteria and foreign objects present in the oral cavity from entering the fixture while waiting for the fusion of the fixture. Bone fusion periods vary somewhat depending on the bone quality and location of the patient, but generally take three to six months.

Subsequently, open the gum to expose the cover screw through the second operation, check the degree of bone fusion of the fixture, and remove the cover screw. Then heal healing abutment (Healing Abutment) to the top of the fixture for aesthetic gum formation, and wait for two to three weeks. In recent years, in order to improve the complexity of the secondary procedure, the first procedure of fastening the healing abutment and immediately fastening the healing abutment may be used.

Next, after confirming aesthetic gum formation, the healing abutment is removed, and an impression coping is fastened to the upper part of the fixture to produce a prosthesis. The impression material is then used to take a preliminary impression in the oral cavity and to remove the impression coping.

Then, after creating a tooth model and perforating the artificial crown, the artificial tooth is completed by fastening the abutment on the upper part of the fixture and fixing the artificial tooth on the abutment.

In the aforementioned implant procedure, there are two methods of attaching the artificial crown to the abutment. One method is to fasten the artificial crown to the abutment using a screw, and the other method is to bond the artificial crown to the abutment using dental cement. .

Among these methods, first, a method of fastening the abutment and the artificial crown using a screw will be described. This method uses screws to fasten the abutment and the artificial crown, which facilitates the removal of the artificial crown from the abutment. Also, when excessive occlusal force is applied to the artificial crown, or the suitability of the artificial crown is degraded. The screw fractures or becomes loose, which has the advantage of suggesting a problem with the implant.

However, if the screw is loosened or loosened even in the normal bite force, it may cause discomfort to the patient.When screwing the abutment with the abutment using the screw, if the artificial crown and the abutment are not precisely fitted, the screw will be loose or Fracture may occur.

As described above, in the method of fastening the artificial column with the abutment using a screw, when the artificial tooth is not precisely combined with the abutment and has a little space because the preparation of the abutment and the artificial crown is not precisely performed, the movement of the artificial crown during authoring And because this movement adversely affects the implant through the abutment, there is a technical difficulty in making the abutment and artificial crown contact surfaces quite precise.

On the other hand, after applying the dental cement on the outer surface of the abutment or the inner surface of the artificial crown and bonding the artificial crown to the abutment, the dental cement fills the space between the abutment and the artificial crown while the dental cement fills the artificial crown. Because of bonding bonding, even if there is space, there is no movement of the artificial crown and thus does not adversely affect the abutment and the implant. In addition, since the screw does not use, it is not necessary to form a hole for the screw in the occlusal surface of the artificial dental crown, which is more advantageous for the natural shape, and it is advantageous for the chewing because more parts can be made in contact with the opposing teeth.

However, in dental implants that use a dental cement to bond the artificial crown to the abutment, it is inconvenient for the patient because it is impossible to remove the artificial crown without breaking the artificial crown in order to repair the artificial crown. Is a problem that can give. In order to solve this problem, that is, a weak adhesive may be used to smoothly separate the artificial crown from the abutment, in this case, the artificial crown may drop out during a meal, causing embarrassment and severely swallowing food. .

On the other hand, when the implant is small in size, the thickness of the abutment is small, or when the margin of the artificial crown bonded to the abutment is too much into the gum, the abutment should be deformed and the prosthesis should be performed. If the prosthesis is performed without deforming the abutment, if two or more abutments are in the wrong direction, the artificial crown cannot be fitted. Deforming the abutment may be difficult at times, so it would be convenient to have a way to change the thickness and length of the prepared abutment without deforming the abutment.

Therefore, an object of the present invention, not only the procedure to combine the artificial dental crown using dental cement can facilitate the detachment of the artificial dental crown to the abutment, so that the repair of the artificial dental crown is easy. It is to provide a sleeve for a dental implant and a dental implant having the same that can be used or as a means for modifying the size and shape of the already prepared abutment.

The object is, according to the invention, arranged in a closed loop shape of a cross-section that is disposed on top of a fixture buried in the alveolar bone and is substantially continuous over the entire circumference along the rim, at least of the outer wall Abutment having an outer contact coupling portion provided in some areas; And a sleeve having a sleeve body coupled to an artificial dental crown on at least a portion of the outer wall, and an inner contact coupling portion formed inside the sleeve body and coupled to the outer contact coupling portion of the abutment. Is achieved by a dental implant.

Here, the outer contact coupling portion is a conical outer inclined contact coupling portion whose outer diameter increases toward the bottom from the top, and the inner contact coupling portion is a cone whose inner diameter increases from the top downward to correspond to the conical shape of the outer inclined contact coupling portion. The inner inclined contact coupling portion of the shape, the outer inclined contact coupling portion of the abutment and the inner inclined contact coupling portion of the sleeve body is preferably detachable conical contact (Conical Connection).

The inclination angle of the inclined contact coupling portion of the sleeve body with respect to the central axis of the fixture may be any one of an angle of 1 to 15 degrees.

The outer wall of the sleeve body, the first outer wall which is in contact with the artificial dental crown, the outer diameter increases from the upper end to the lower side; A second outer wall extending from a lower end of the first outer wall and having an inclination angle greater than that of the first outer wall and having an outer diameter larger from an upper end to a lower end; And a third outer wall extending from a lower end of the second outer wall, the outer diameter of which decreases from the upper end to the lower end.

The abutment is provided with a wing having a larger inclination angle than the inner inclined contact coupling portion in a lower region of the inner inclined contact coupling portion, and the lower end surface of the sleeve body is spaced apart from the upper surface of the abutment by the predetermined interval. The sleeve is preferably coupled to the abutment.

Some areas of the outer sloping contact coupling portion of the abutment are formed with a rotation stopping groove cut out by a predetermined depth from the surface, and an inner sloping contact coupling portion of the sleeve body is provided with a rotation stopping projection coupled to the rotation stopping portion. desirable.

The abutment may be screwed to the fixture by abutment screws.

The sleeve and the artificial dental crown may be bonded to each other by dental cement.

The sleeve is preferably made of titanium (Titanium) material.

The upper region of the sleeve is preferably shielded to prevent the entry of dental cement between the sleeve and the abutment.

The abutment outer contact coupling portion and the inner contact coupling portion of the sleeve body may be bonded (bonding).

In addition, the above object, according to the present invention, the body body is coupled to the artificial dental crown at least a portion of the outer wall; And an inner contact coupling part formed inside the sleeve body and formed in a shape corresponding to an outer contact coupling part formed on at least a portion of an outer wall of the abutment disposed on an upper portion of the fixture, and coupled to the outer contact coupling part. It can also be achieved by a sleeve for a dental implant, characterized in that.

Here, the outer contact coupling portion is a conical outer inclined contact coupling portion whose outer diameter increases toward the bottom from the top, and the inner contact coupling portion is a cone whose inner diameter increases from the top downward to correspond to the conical shape of the outer inclined contact coupling portion. The inner inclined contact coupling portion of the shape, the outer inclined contact coupling portion of the abutment and the inner inclined contact coupling portion of the sleeve body is preferably detachable conical contact (Conical Connection).

The inclination angle of the inclined contact coupling portion of the sleeve body with respect to the central axis of the fixture may be any one of an angle of 1 to 15 degrees.

The outer wall of the sleeve body, the first outer wall which is in contact with the artificial dental crown, the outer diameter increases from the upper end to the lower side; A second outer wall extending from a lower end of the first outer wall and having an inclination angle greater than that of the first outer wall and having an outer diameter larger from an upper end to a lower end; And a third outer wall extending from a lower end of the second outer wall, the outer diameter of which is reduced from the upper end toward the lower side.

It is preferable that an inner sloping contact coupling portion of the sleeve body is provided with a rotative stop projection coupled to a rotative stopping groove formed on the outer sloping contact coupling portion of the rent.

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

1 is an exploded perspective view of a dental implant according to an embodiment of the present invention, Figure 2 is a front view of the combined components of the dental implant of Figure 1, Figure 3 is a cross-sectional view of the dental implant of Figure 2, Figure 4 Is a front view and a sectional view of the sleeve shown in FIG.

As shown in these figures, the dental implant 1 according to an embodiment of the present invention, a fixture (10, Fixture) embedded in the alveolar bone (3) and the abutment screw 21 formed on the lower end The abutment 20 detachably coupled to the fixture 10 by means of the abutment, and the artificial crown 30 and the crown are bonded to a portion of the outer wall 42 and the abutment 20 is detachable to a portion of the inner wall. It includes a sleeve 40 is coupled to be. In this embodiment, the abutment 20 is detachably coupled to the fixture 10 by the abutment screw 21. However, the abutment (not shown) and the fixture (not shown) may be integrally formed. Will do.

Fixtures (10) are usually made of pure titanium, titanium alloys or other non-human rejection metals, metal alloys or ceramics, and alveolar bones of the missing teeth, such as the roots of natural teeth (3). Is planted in) is a fixture supporting the artificial crown (30).

Although the fixture 10 may have various shapes, as shown in detail in FIGS. 2 and 3, in the present embodiment, the micro thread unit 11 is formed at the upper end and larger in size at the lower end. A thread 12 in macro units is formed. In addition, in the center of the fixture 10, an installation groove 13 is formed which is formed to be recessed a predetermined depth downward from the upper end, and the abutment screw 21 of the abutment 20 is fastened to an inner wall forming the installation groove 13. The internal threaded portion 14 is formed so that it can be threaded.

Abutment 20 of the present embodiment, as shown in detail in Figures 2 and 3, as a component for connecting between the sleeve 40 and the fixture 10 to which the artificial dental crown 30 is fixedly coupled, The abutment screw 21 which couples between the abutment 20 and the fixture 10 by being detachably coupled to the installation groove 13 described above, and a predetermined angle α with respect to the central axis of the fixture 10. 4) the outer inclined contact coupling portion 22 is formed to be inclined, and the wing portion 25 is formed to protrude in the circumferential direction from the lower end of the outer inclined contact coupling portion 22. In addition, as shown in Figure 1, the outer rotator contact groove 22 is formed on the outer wall of the abutment 20 is formed a rotary stop groove 27 is cut to a predetermined depth, thereby the sleeve 40 The relative rotation with respect to the abutment 20 can be prevented.

Here, the outer inclined contact coupling portion 22 formed by a predetermined length downward from the upper end of the outer wall of the abutment 20 is the central axis of the fixture 10 at an angle of 1 to 15 degrees. It may be formed to be inclined with respect to the reference 4, but in this embodiment is formed to be inclined about 6 degrees (α). The outer inclined contact coupling portion 22 of the abutment 20 and the inner inclined contact coupling portion 41 of the sleeve 40 to be described later have substantially the same inclination angle α, and because of this shape, the abutment 20 and the sleeve 40 may be conical contacted. From the abutment 20 unless a large external pressure is applied because a strong frictional force is generated between the outer inclined contact coupling portion 22 of the abutment 20 and the inner inclined contact coupling portion 41 of the sleeve 40 by the cone contact connection. The sleeve 40 can be prevented from being separated. This will be described later in detail.

On the other hand, the sleeve 40 of the present embodiment, as shown in detail in Figures 3 and 4, is formed of a titanium material is made of a hollow shape, the sleeve body 47 is coupled to the artificial crown 30 to the outer wall And an inner sloping contact coupling portion 41 formed on the inner wall of the sleeve body 47 and provided in a shape corresponding to the outer sloping contact coupling portion 22 formed on the outer wall of the abutment column 20. The inclination angle α of the inner wall is also formed to be substantially the same as the inclination angle α of the outer inclined contact coupling portion 22, and the abutment 20 and the sleeve 40 of this shape can maintain the engagement with a strong frictional force. .

This is because, as described above, the abutment 20 and the sleeve 40 are in a conical contact connection (Conical Connection), this conical contact connection allows a separate operation while allowing the detachable between the abutment 20 and the sleeve 40. As long as this is not applied, the sleeve 40 can be restrained from being detached from the abutment 20.

In more detail, a portion of the outer wall of the abutment 20 from the upper end to the outer inclined contact coupling portion 22 inclined by a predetermined angle α with respect to the central axis 7 of the fixture 10. When a part of the inner wall of the sleeve body 47 is provided as the inner inclined contact coupling portion 41 to correspond to the outer inclined contact coupling portion 22 of the abutment 20, the sleeve 40 and the abutment ( 20 may be in contact with a large area so that the sleeve 40 and the abutment 20 is able to implement a rigid coupling by a strong friction force.

In addition, the abutment 20 and the sleeve 40 are conical contact connection does not require precise processing, thereby having the advantage that can be easily manufactured. In more detail, for example, due to the difficulty in processing, even if the outer inclined contact coupling portion 22 of the abutment 20 and the inner inclined contact coupling portion 41 of the sleeve body 47 can not be precisely processed, the cone contact connection By the outer inclined contact coupling portion 22 of the abutment 20 and the inner inclined contact coupling portion 41 of the sleeve body 47 will be in contact with one area, and then touched first when actually subjected to chewing force in the oral cavity The metal settle down occurs in the site, and eventually the outer inclined contact coupling portion 22 of the abutment 20 and the inner inclined contact coupling portion 41 of the sleeve body 47 come into contact with the entire surface. This allows the sleeve 40 to be firmly coupled to the abutment 20.

On the other hand, as described above, when the rotary stop groove 27 of the predetermined depth is formed in the outer inclined contact coupling portion 22 of the abutment 20 to the inner inclined contact coupling portion 41 of the sleeve body 47. By forming a rotation blocking projection (not shown) corresponding to the rotation blocking groove 27 may be further inhibit the relative rotation of the sleeve 40 relative to the abutment 20.

In addition, the outer wall 42 of the sleeve body 47 is formed to extend from the lower end of the first outer wall 43 and the first outer wall 43 bonded to the artificial dental crown 30, the lower end of the artificial dental crown 30 The second outer side wall 44 which supports a surface, and the 3rd outer side wall 45 extended from the lower end of the 2nd outer side wall 44 are included.

The first outer wall 43 is a portion which is in direct contact with the artificial dental crown 30 and the outer diameter increases from the top to the lower side, and to prevent the artificial dental crown 30 from moving relative to the first outer wall 43. The separation space formed between the artificial crown 30 and the first outer wall 43 is filled with the dental cement 50 when the dental cement 50 is used for the procedure.

The second outer wall 44 has a larger inclination angle than the first outer wall 43 as a portion in contact with the bottom surface of the artificial dental crown 30 and has a shape in which the outer diameter increases from the top to the lower side. The dental cement 50 is interposed between the second outer wall 44 and the lower surface of the artificial dental crown 30 so that the artificial dental crown 30 is fixedly supported with respect to the sleeve 40.

The third outer wall 45 extends from the lower end of the second outer wall 44, but the outer diameter decreases toward the lower side, and the outer diameter at the lower end substantially matches the outer diameter of the wing 25 of the abutment 20. .

Here, the lower surface 46 of the sleeve body 47 connecting the lower end of the third outer wall 45 and the lower end of the inner inclined contact coupling portion 41 is the upper surface 25a of the wing 25 of the abutment 20. Do not touch with. When the abutment 20 and the sleeve 40 are in conical contact, frictional forces are generated. The outer slope contact coupling portion 22 and the inner slope contact coupling portion 41 must be in contact with the axial wall. . To this end, the outer wall of the abutment 20 and the inner wall shape of the sleeve body 47 are manufactured to correspond to each other, but the bottom surface 46 of the sleeve body 47 is in contact with the upper surface 25a of the wing 25 of the abutment 20. It should not be manufactured. When the lower surface 46 of the sleeve body 47 comes into contact with the upper surface 25a of the wing 25 of the abutment 20, the friction between the abutment 20 and the sleeve 40 is weakened, so that the abutment 20 is against the abutment 20. This is because the sleeve 40 can be rotated relative to the sleeve 40 and further the sleeve 40 can be displaced in a direction perpendicular to the abutment 20.

Therefore, when the sleeve 40 is manufactured, the gap between the lower surface 46 of the sleeve body 47 and the upper surface 25a of the wing portion 25 of the abutment 20 may be maintained to be kept wide. If the space is maintained to a space enough to recognize the space, such as food may remain to cause side effects such as inflammation, so the lower surface 46 of the sleeve body 47 and the upper surface of the wing portion 25 of the abutment 20 ( 25a) It is desirable to manufacture so that the minimum separation space (S) is formed between.

On the other hand, since the sleeve 40 is coupled to the abutment 20, the artificial dental crown 30 may be more firmly supported. That is, in the conventional dental implant (not shown), the artificial dental crown (not shown) is directly coupled to the abutment (not shown), so there is a problem that it is not easy to implement a natural shape in the treatment of large teeth such as molar teeth. In the dental implant 1 according to the present embodiment, the sleeve 40 is coupled to the abutment 20 so that the procedure of a large artificial tooth, such as a molar tooth, may be more easily performed. Has the advantage of being implemented.

Hereinafter, a process of performing an implant procedure using the dental implant 1 having such a configuration will be described in detail.

First, a groove matching the dimensions of the fixture 10 is formed by drilling and tapping the alveolar bone 3 to be treated in the oral cavity. Thereafter, the fixture 10 is embedded in the groove formed in the alveolar bone 3. The first operation is completed by fastening a cover screw (not shown) to the upper portion of the fixture 10 to seal the fixture 10. Bone fusion periods vary somewhat depending on the bone quality and location of the patient, but generally take three to six months.

Subsequently, the gum 5 is opened through the second operation to expose the cover screw, and then the degree of bone fusion of the fixture 10 is checked and the cover screw is removed. Then, the healing abutment (not shown) is fastened to the upper portion of the fixture 10 to form an aesthetic gum 5.

However, in order to improve the complexity of the secondary procedure, the healing abutment may be fastened directly to the fixture 10 during the first operation of embedding the fixture 10 by omitting the above-described process of fastening and removing the cover screw. have.

Next, after confirming aesthetic gum formation, the healing abutment is removed, and an impression coping (not shown) is fastened to the fixture 10 to form a prosthesis. The impression material is then used to take a preliminary impression in the oral cavity and to remove the impression coping. Then, a tooth model is made and the artificial dental crown 30 is poreized.

Next, the abutment 20 is fastened to the fixture 10. Thereafter, the sleeve 40 is conical contacted with the abutment 20. The inner sloping contact coupling portion 41 of the sleeve body 47 and the outer sloping contact coupling portion 22 of the abutment 20 are conical in contact with each other to generate a strong frictional force between the sleeve 40 is the abutment 20 Can be firmly held in position. At this time, the rotation stop projection formed on the inner inclined contact coupling portion 41 and the rotation stop groove 27 cut out to the outer inclined contact coupling portion 22 are combined to correspond to the relative rotation of the sleeve 40 with respect to the abutment column 20. You may be more than likely to stop it.

Thereafter, the outer wall 42 of the sleeve body 47 is more precisely coated with the dental cement 50 on the first outer wall 43 and the second outer wall 44 or the dental cement 50 on the inner surface of the artificial crown 30. Is applied, and the sleeve 40 and the artificial dental crown 30 is bonded (bonding). At this time, the dental cement 50 to be filled between the artificial crown 30 and the outer wall of the sleeve body 47 may be introduced between the abutment 20 and the sleeve 40, so that the dental cement 50 is filled. Should be done correctly.

However, in the above description, it has been described that the artificial tooth 30 is coupled to the abutment 20 after connecting the sleeve 40 to the cone contact, but if the procedure is possible, the artificial crown 30 to the sleeve 40 for dental use After bonding and bonding by cement 50, the abutment sleeve 20 to the abutment 20 may be conical contact connection sleeve (40) is coupled.

On the other hand, when a problem occurs in the artificial dental crown 30 after the procedure, and repair is required, the artificial dental crown 30 is separated from the abutment 20 by bonding to the abutment 20. You can repair the problem. That is, the sleeve 40 is strongly bound to the abutment 20 so that it is not detached from the abutment 20 in normal use, but can be easily separated from the abutment 20 when repair is required.

As described above, a slight separation space (S, see FIG. 3) is formed between the sleeve 40 to which the artificial dental crown 30 is fixed and the upper surface of the wing portion 25 of the abutment 20. When a force is applied in the direction of the sleeve 40 by interposing a dental pliers (plier) in the space S, the sleeve 40 to which the artificial crown 30 is bonded can be easily separated from the abutment 20. Then, repair of the artificial dental crown 30 can be performed.

As such, according to the dental implant 1 of the present embodiment, when the position of the artificial dental crown 30 is fixed to the abutment 20 by the sleeve 40, a procedure using the dental cement 50 can be performed. As well as detachable between the artificial dental crown 30 and the abutment 20 can be easily repaired when the artificial dental crown 30 needs to be repaired, thereby providing convenience to the patient.

Hereinafter, with reference to the accompanying drawings illustrating a dental implant according to another embodiment of the present invention. However, the same description as that described in the dental implant according to an embodiment of the present invention will be omitted.

Figure 5 is a cross-sectional view of a dental implant according to another embodiment of the present invention, as shown therein, the dental implant (1a) according to another embodiment of the present invention, the inner wall as in one embodiment of the present invention Sleeve 40a formed of the inner inclined contact coupling portion 41 having an inclined angle substantially corresponding to the outer inclined contact coupling portion 22 of the abutment 20, the upper region of which is provided as a shielded region 48 that is shielded. ).

This is a dental application applied between the sleeve 40a and the abutment 20 when the sleeve 40a is conical contacted to the abutment 20 and then the artificial crown 30 is bonded to the sleeve 40a. This is to prevent the fear that cement 50a or the like flows between the sleeve 40a and the abutment 20 to prevent separation between the sleeve 40a and the abutment 20.

As described above, according to another embodiment of the present invention, the dental cement 50a may be used to combine the artificial dental crown 30 and the detachment of the artificial dental crown 30 to the abutment 20. The upper region of the sleeve body 47a may be formed as a shielding area 48, thereby preventing the dental cement 50a from entering between the abutment 20 and the sleeve 40a during the procedure. It works.

On the other hand, in the following, with reference to the accompanying drawings illustrating a dental implant according to another embodiment of the present invention. However, the same description as that described in the dental implant according to one embodiment and the other embodiments of the present invention will be omitted.

6 is a cross-sectional view of a dental implant according to another embodiment of the present invention, the dental implant 1b according to another embodiment of the present invention, unlike one embodiment and the other embodiment of the present invention abutment 20 The outer inclined contact coupling portion 41 of) and the inner inclined contact coupling portion 41 of the sleeve 40b are bonded by a dental adhesive, that is, dental cement 50b.

As in this embodiment, when bonding between the abutment 20 and the sleeve 40b may be somewhat difficult to remove the artificial crown 30 in the oral cavity, the size of the abutment 20 is small or thick Is small or when the margin (margin) of the artificial dental crown 30 bonded to the abutment 20 enters the gum 5, the sleeve 40b increases the thickness and width of the existing abutment 20 and the artificial crown It can be used as a means of moving the margin of 30 towards the crown.

However, as described above, when the abutment 20 and the sleeve 40b are bonded to each other, there may be a problem in detachment or detachment. Such a problem may be easily solved by using an appropriate mechanism. That is, after inserting a dental pliers (plier, etc.) in a minute gap of the lower region where the abutment 20 and the sleeve 40b contact each other, the sleeve 40b can be easily removed from the abutment 20 by operating the same. It may be.

On the other hand, the sleeve 40b of the present embodiment, in addition to modifying the thickness and width of the abutment 20, the shape of the abutment 20 by modifying the shape of the sleeve 40b to be coupled to the abutment 20 to deform the shape of the abutment 20 It can also play a role.

In the above-described embodiments, the outer inclined contact coupling portion of the abutment and the inner inclined contact coupling portion of the sleeve are bonded by a dental cement, but may be a bonding bond by an adhesive other than the bonding bond by the dental cement. something to do.

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, which will be apparent to those skilled in the art. Therefore, such modifications or variations will have to be belong to the claims of the present invention.

As described above, according to the present invention, the dental cement can be used to combine the artificial crown as well as to facilitate the detachment of the artificial crown to the abutment to repair the artificial crown when it is necessary to repair it. It may be facilitated or used as a means of modifying the size and shape of the rented column already made.

Claims (16)

An outer contact coupling part disposed on an upper portion of a fixture embedded in the alveolar bone and formed in a closed loop shape having a cross section that is substantially continuous over the entire circumference along an edge, and is provided in at least a portion of the outer wall. Abutment provided; And And a sleeve having a sleeve body to which an artificial dental crown is coupled to at least a portion of the outer wall, and an inner contact coupling portion formed inside the sleeve body and coupled to the outer contact coupling portion of the abutment. Dental implants. The method of claim 1, The outer contact coupling portion is a conical outer inclined contact coupling portion whose outer diameter increases from the top to the bottom, The inner contact coupling portion is a conical inner slope contact coupling portion whose inner diameter increases from the top downward to correspond to the cone shape of the outer slope contact coupling portion. And the inner sloping contact coupling portion of the abutment and the inner sloping contact coupling portion of the sleeve body are detachably conical contacted (Conical Connection). The method of claim 2, Dental implants, characterized in that the inclination angle of the inclined contact coupling portion of the sleeve body with respect to the central axis of the fixture is any one of the angle of 1 to 15 degrees. The method of claim 2, The outer wall of the sleeve body, A first outer wall contacting the artificial crown and having an outer diameter that increases from an upper end to a lower end thereof; A second outer wall extending from a lower end of the first outer wall and having an inclination angle greater than that of the first outer wall and having an outer diameter larger from an upper end to a lower end; And And a third outer wall extending from a lower end of the second outer wall and having an outer diameter smaller from the upper end to the lower end. The method of claim 2, The abutment is provided with a wing having a larger inclination angle than the inner inclined contact coupling portion in the lower region of the inner inclined contact coupling portion, And the sleeve is coupled to the abutment so that the bottom surface of the sleeve body is spaced apart from the top surface of the abutment by a predetermined distance. The method of claim 2, A portion of the outer sloping contact coupling portion of the abutment is formed with a rotation stopping groove cut out by a predetermined depth from the surface, Dental implants, characterized in that the inner inclined contact coupling portion of the sleeve body is provided with a rotary stop projection coupled to the rotary stop. The method of claim 1, And the abutment is screwed to the fixture by abutment screws. The method of claim 1, The sleeve and the artificial dental dental implant characterized in that the bonding (bonding) by dental cement (Cement). The method of claim 1, The sleeve is a dental implant, characterized in that made of titanium (Titanium) material. The method of claim 1, And the upper region of the sleeve is shielded to prevent entry of dental cement between the sleeve and the abutment. The method of claim 1, And the outer contact coupling portion of the abutment and the inner contact coupling portion of the sleeve body are bonded to each other. A sleeve body having an artificial dental crown coupled to at least a portion of the outer wall; And It is formed on the inner side of the sleeve body, and provided in a shape corresponding to the outer contact coupling portion formed in at least a portion of the outer wall of the abutment disposed on the upper portion of the fixture including an inner contact coupling portion coupled to the outer contact coupling portion Sleeve for dental implants, characterized in that. The method of claim 12, The outer contact coupling portion is a conical outer inclined contact coupling portion whose outer diameter increases from the top to the bottom, The inner contact coupling portion is a conical inner slope contact coupling portion whose inner diameter increases from the top downward to correspond to the cone shape of the outer slope contact coupling portion. The abutment inclined contact coupling portion of the abutment and the inclined contact coupling portion of the sleeve body is detachable conical contact (Conical Connection), characterized in that the sleeve. The method of claim 13, The inclination angle of the inclined contact coupling portion of the sleeve body with respect to the central axis of the fixture is any one of the angle of 1 to 15 degrees, the sleeve for dental implants. The method of claim 13, The outer wall of the sleeve body, A first outer wall contacting the artificial crown and having an outer diameter that increases from an upper end to a lower end thereof; A second outer wall extending from a lower end of the first outer wall and having an inclination angle greater than that of the first outer wall and having an outer diameter larger from an upper end to a lower end; And And a third outer wall extending from a lower end of the second outer wall and having an outer diameter smaller from the upper end to the lower end. The method of claim 13, The inner inclined contact coupling portion of the sleeve body, the sleeve for the dental implant, characterized in that the rotation stopping projection is coupled to the rotation stopping groove formed on the outer inclined contact coupling portion of the abutment.

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