WO2023085641A1 - Implant having multiple support structure - Google Patents

Abstract

An implant according to the present invention comprises: a root implantation unit (10) implanted in a position where a tooth root was located in the alveolar bone (1); and a cover implantation unit (20) which is integrally formed with the top of the root implantation unit (10), and of which a part is implanted from the upper surface of the alveolar bone (1) into the alveolar bone (1) while covering the upper surface of the alveolar bone (1).

Description

Implants with multiple support structures

The present invention relates to a dental implant having multiple support structures.

Currently, almost all implant fixtures have a structure of forming a helical spiral, and a method of rotating the fixture and inserting it into the alveolar bone is taken. The main reason for not getting out of this rotational insertion method is that due to the helical thread of the fixture, strong support to withstand the occlusal force can be obtained. However, the rotational insertion method in conventional implants entails various limitations, and in particular, only a single fixture in a symmetrical shape can be configured.

In addition, in the process of placing the fixture in the alveolar bone according to the conventional implant, perforation in the maxillary sinus of the fixture occurs or a problem in which the fixture falls into the weak bone sometimes occurs.

In addition, according to the conventional implant, food is well caught in the space between the teeth, and if oral care is neglected, there is a high possibility that bacteria penetrate into the fixture, which shortens the lifespan of the implant. In particular, when an implant procedure is performed on a patient whose alveolar bone is destroyed and the height of the alveolar bone is lowered, these problems may be further aggravated.

An object of the present invention is to provide an implant capable of providing multiple supports capable of withstanding an occlusal force, and thus providing an implant that does not require the formation of a helical thread.

In addition, an object of the present invention is to provide an implant that can prevent perforation of the maxillary sinus or fall into a weak bone during the implantation process.

In addition, an object of the present invention is to provide an implant capable of significantly reducing the possibility of bacterial penetration.

An implant according to one aspect of the present invention includes a root implantation unit 10 which is placed where the tooth root is located in the alveolar bone 1; And a cover placement unit integrally formed on the upper part of the root placement unit 10 and partially implanted into the alveolar bone 1 from the upper surface of the alveolar bone 1 while covering the upper surface of the alveolar bone 1 ( 20); characterized in that it is configured to include.

An implant according to one aspect of the present invention includes two root implantation units (10; 10-1, 10-2) respectively placed where two roots of a single tooth were located in the alveolar bone (1); and a cover that is integrally formed on the upper part of the two root placement parts 10 and covers the upper surface of the alveolar bone 1 and partially implanted into the alveolar bone 1 from the upper surface of the alveolar bone 1. It is characterized in that it is configured to include; part (20).

An implant according to one aspect of the present invention includes three root implantation parts (10; 10-3, 10-4, 10-5) each placed where three roots of a single tooth were located in the alveolar bone (1); and a cover that is integrally formed on the upper part of the three root placement parts 10 and covers the upper surface of the alveolar bone 1 and partially implanted into the alveolar bone 1 from the upper surface of the alveolar bone 1. It is characterized in that it is configured to include; part (20).

In the implant described above, a rod-shaped guide having one end extending downward from the lower side of the cover placement part 20 at the center between the three root insertion parts 10; 10-3, 10-4, 10-5. Ding post (Guiding Post); may be further provided.

In the implant described above, the cover placement part 20 has a disk shape integrally coupled to the upper part of the root placement part 10 and transmits and distributes the occlusal force to the upper surface of the alveolar bone 1. Wing plate ( 21); And a cylindrical cylinder blade 22 extending vertically from the edge of the wing plate 21, wherein the cylinder blade 22 is implanted from the upper surface of the alveolar bone 1 into the alveolar bone 1 It can be.

In the implant described above, a plurality of models having different thicknesses of the wing plate 21 are provided, and as the loss of alveolar bone increases, a model having a thicker wing plate 21 may be selected.

In the implant described above, at least the upper surface of the wing plate 21 is highly polished, and a circular trench 21a is provided on the lower surface of the wing plate 21 so that the bones of the upper surface of the alveolar bone grow and fill. can make it possible

In the implant described above, the side surface of the wing plate 21 may be filled with artificial bone as much as the height of the wing plate 21 .

In the implant described above, a dedicated bur 60 is used to form a space in the alveolar bone where the cylinder blade 22 is to be implanted, and the dedicated bur 60 is obstructed from the upper side. A cylindrical grinding part 62 having a cylindrical shape may be provided.

In the implant described above, the root placement unit 10 includes a columnar body 11; and a plurality of vertical blades 12 integrally coupled to the outer circumferential surface of the body 11 and having a blade shape extending in the vertical direction.

In the implant described above, the root implantation part 10 protrudes from the body 11 but protrudes at a height lower than that of the vertical blade 12, and extends in the transverse direction between the adjacent vertical blades 12 A stop bar 13 is further provided, and in the longitudinal direction of the root planting part 10, a plurality of the stop bars 13 may be disposed at intervals.

In the implant described above, it is integrally formed on the upper part of the cover placement part 20, has a retention hole 30a for coupling with the crown 50, and has a crown coupling portion with a closed lower side. (30); may be further provided.

The implant according to one aspect of the present invention can provide multiple supports capable of withstanding occlusal force, and thus has the advantage of not having to form a helical thread.

In addition, the implant according to one aspect of the present invention has the advantage of being able to prevent perforation of the maxillary sinus or falling into a weak bone during the implantation process.

In addition, the implant according to one aspect of the present invention has the advantage of significantly reducing the possibility of bacterial penetration.

In addition, advantages not described above may be added or made more clear through the following 'specific description for practicing the invention'.

1 is a perspective view showing the appearance of an implant according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along sections 1A-1A of FIG. 1 .

3 is a cross-sectional view taken along 2A-2A in FIG. 2;

4 and 5 show the situation after the procedure using the implant according to the first embodiment of the present invention.

6 shows an implant according to a second embodiment of the present invention.

7 shows an implant according to a third embodiment of the present invention.

8 is a partial cutaway view showing a dedicated bur 60 for forming or trimming a space in which a cylinder blade of the present invention is to be placed, partially cut away for convenience of understanding.

1 is a perspective view showing the appearance of an implant according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along 1A-1A of FIG. 1, and FIG. 3 is a cross-sectional view taken along 2A-2A of FIG. am. 4 and 5 show the situation after the procedure using the implant according to the first embodiment of the present invention.

The implant according to the first embodiment of the present invention includes a root insertion unit 10, a cover installation unit 20, and a crown coupling unit 30.

The root implantation part 10 is placed where the tooth root was located in the alveolar bone 1, and the upper part extends downward after being integrally (integrally) combined with the cover implantation part 20, and various components are installed on the surface. It forms a column, but it is roughly columnar, and it is tapered at the bottom so that the tip has a pointed shape.

The root planting part 10 constitutes a vertical blade 12 and a stop bar 13 on the outer circumferential surface of the body 11 having a tapered column shape at the bottom. The vertical blades 12 are integrally (as one body) coupled to the outer circumferential surface of the body 11 and have a blade shape extending in the longitudinal direction, and a plurality (plural) are formed on the outer circumferential surface of the body 11. Referring to FIG. 2, the vertical blade 12 in cross section has a sharp triangular pyramid shape as it moves away from the body, and forms a space between adjacent vertical blades 12, but partially the stop bar 13 in that space is formed.

Referring to FIG. 3, in a longitudinal cross-section, the vertical blade 12 extends downward, but at least the outer diameter formed by the entire vertical plate 12 at the lower portion has a shape that decreases as it goes downward.

The root implantation unit 10 according to an embodiment of the present invention does not form a spiral threaded portion, and thus does not need to be rotated and placed during implant treatment. A blade-like structure (vertical blade) is formed on the outer surface of the root implantation part 10 from top to bottom instead of a normal threaded part, and the root implantation part of the implant is tapped by a doctor at the implant placement part formed to some extent. (10) penetrates directly downward into the pubic bone to allow the implant to be fixed. According to one embodiment of the present invention, a vertical blade is made in the longitudinal direction at the fixture part of a conventional implant, and the tip of the vertical blade is sharpened so that the root implantation part 10 of the implant itself penetrates the alveolar bone and enters. can be fixed

And the stop bar 13 protrudes from the body 11, but protrudes at a lower height than the vertical blade 12, and extends in the transverse direction in the space between the adjacent vertical blades 12. The stop bar 13 extends in the circumferential direction on the outer circumferential surface of the body 11, except where the vertical blade 12 is formed. In the longitudinal direction of the root planting part 10, a plurality of stop bars 13 are spaced apart from each other from the top to the bottom of the body 11 at intervals. A space 10a (see FIG. 3) is formed between the vertically adjacent stop bars 13, and bones grow into this space 10a (see FIGS. 4 and 5). A horizontal structure (stop bar) is connected between the vertical blades of the root planting unit 10 to better withstand the occlusal force after the procedure. By allowing vertical blades formed in the longitudinal direction to be connected to each other again in the transverse direction, the implant can better withstand the occlusal force after being combined with the bone.

The cover placement unit 20 is integrally (as one body) formed on the upper part of the root placement unit 10 and covers the upper surface (more than half of the upper surface) of the alveolar bone 1 from the upper surface of the alveolar bone 1. A portion is implanted into the alveolar bone (1). The cover mounting unit 20 includes a wing plate 21 and a cylinder blade 22.

The wing plate 21 is integrally coupled to the upper portion of the root placement unit 10, has a roughly disk shape with a thickness, and serves to transmit and disperse the occlusal force to the upper surface of the alveolar bone 1, and to transmit the occlusal force It has sufficient thickness. The wing plate 21 is integrally coupled between the root planting part 10 and the crown coupling part 30, but has a substantially disk-shaped wing extending horizontally.

The cylinder blade 22 has a cylindrical shape extending vertically from the edge of the wing plate 21, and is formed thinner than the wing plate 21. The cylinder blade 22 is implanted into the alveolar bone 1 from the upper surface of the alveolar bone 1 at the rim of the wing plate 21 (see Figs. 4 and 5). The lower end of the cylinder blade 22 is sharp and facilitates the implantation process into the alveolar bone.

According to one embodiment of the present invention, since the wing plate and the cylinder blade are provided, it greatly contributes to the success of the implant and achieves stable fixation. Since the cylinder blade 22 is implanted in the alveolar bone while the wing plate 21 of the cover placement part 20 covers the upper surface of the alveolar bone, the cover placement part 20 can have strong adhesion and mutual coupling with the alveolar bone. . The cover placement part 20 adheres to the upper surface of the alveolar bone and enters the alveolar bone again by the cylinder blade, thereby promoting a stable connection between the cover placement part 20 and the alveolar bone and preventing bacterial penetration and separation. .

Supposedly, if there is no cylinder blade 22, the gap between the wing plate 21 and the alveolar bone can more easily allow bacterial penetration, and the bonding force between the wing plate 21 and the alveolar bone will be smaller.

And in addition to the root planting unit 10, the crown coupling unit 30 and the root planting unit 10 help to disperse the occlusal force by the cover planting unit 20 configured (connecting) between the root planting unit ( 10), it has the effect of increasing the bonding force by the cylinder blade 22 of the cover installation part 20 and preventing the penetration of bacteria.

In addition, according to the cover placement part 20 according to an embodiment of the present invention, the wing plate 21 extends outward from the root placement part 10, so that the path from the outside to the alveolar bone and further to the root placement part To lengthen the path, external bacteria must pass through the interface between the wide upper surface of the wing plate and the gingiva 2 to reach the bone, and furthermore, from this, the side surfaces (outer and inner surfaces) of the cylinder blade 22 and the alveolar bone The root implantation unit 10 can be reached only after passing through the interface between the wing plates and the interface between the lower surface of the wing plate and the alveolar bone.

In particular, since the cylinder blade 22 is embedded in the upper surface of the alveolar bone at the rim of the wing plate, external exposure of the gap that may occur between the cylinder blade 22 and the upper surface of the alveolar bone is completely blocked, and the entire route to the root planting part By adding a path by the interface between the side surfaces (outer and inner surfaces) of the cylinder blade 22 and the alveolar bone in the path, there is an effect of further lengthening the path. Accordingly, there is an effect of making it very difficult for external bacteria to penetrate to the root planting unit 10 . Therefore, germs from the outside can only reach the upper surface of the alveolar bone at most, so there is an advantage that there is a high probability of resulting in a lighter problem.

According to the cover placement unit 20 according to an embodiment of the present invention, even if oral care is neglected after the crown 50 is later coupled to the crown coupling unit 30, oral bacteria are prevented from penetrating into the root placement unit 10. It protects and prolongs the life of the implant.

On the other hand, conventional implants have concerns about missing the implant due to their design shape when the maxillary sinus or maxillary and mandibular bone quality is poor, but the implant according to an embodiment of the present invention has an effect of preventing such a problem.

In addition, due to the wing plate extending horizontally while having a thickness, there is an effect of reducing the space between the teeth at the bottom of the crown so that food is less caught.

According to one aspect of the present invention, a plurality of models having different thicknesses of the wing plate 21 are provided, and a model having a thicker thickness of the wing plate 21 can be selected as the loss of alveolar bone increases. For example, the thickness of the wing plate 21 in the implant shown in FIG. 5 is thicker than the thickness T1 of the wing plate 21 in the implant shown in FIG. 4 . When the alveolar bone of the patient is destroyed and the height of the alveolar bone is lowered, the thickness of the wing plate 21 is thickened by the amount of the lowered alveolar bone to make the ideal occlusal surface height, so that the final prosthesis can be made similar to the shape of the natural tooth.

According to the conventional implant, the length of the abutment, etc. was lengthened to match the occlusal surface with neighboring teeth when the loss of alveolar bone was great, but according to one aspect of the present invention, the thickness (height) of the wing plate Since it is necessary to thicken the height of the alveolar bone, even for patients with a lowered height of the alveolar bone, the C/R ratio is idealized to withstand the occlusal pressure better, and there is an effect that the occlusal surface can be aligned with a more stable structure.

In addition, the side of the wing plate 21 can be filled with artificial bone 3 over the side of the wing plate and the remaining upper surface of the alveolar bone, starting from the side height of the wing plate 21 to have a gently falling profile. can

The surface of the root planting part 10, the lower surface of the wing plate 21, and the surface of the cylinder blade 22 may be surface treated with HA (Hydroxyapatite) or SLA (Sandblasted, Large Grit, Acid-etched). The surface between the crown coupling part 30 and the cover placement part 20 and the upper surface of the wing plate 21 are highly polished to prevent foreign substances (bacteria) from sticking to them. The lower surface of the wing plate 21 is provided with a circular (annular) trench 21a so that the bones of the upper surface of the alveolar bone can grow and fill, thereby further improving bonding strength (adhesion).

The crown coupling part 30 is integrally formed (as one body) on the upper part of the cover placement part 20, and has an annular space at the lower end to be constricted, and has a cylindrical shape with a thick upper part and a closed lower part. there is. The crown coupling part 30 is for coupling with the crown 50 and includes a retention hole 30a in a depth direction from the upper center.

6 shows an implant according to a second embodiment of the present invention, and FIG. 7 shows an implant according to a third embodiment of the present invention.

In the implant according to the second embodiment of the present invention, two root implantation parts 10 (10-1, 10-2) are provided under the cover implantation part 20 (see FIG. 6), and in the alveolar bone 1 Each tooth is placed in the place where two roots were located on a single tooth. In the implant according to the third embodiment of the present invention, three root placement parts 10 (10-3, 10-4, 10-5) are provided under the cover placement part 20 (see FIG. 7), and the alveolar bone ( In 1), each tooth is placed in the place where three roots were located on a single tooth.

Structures of the other cover placement part 20 and the crown coupling part 30 are similar to those of the first embodiment. The cover placement part 20 is integrally formed on the upper part of the two or three root placement parts 10 and partially covers the upper surface of the alveolar bone 1 from the upper surface of the alveolar bone 1 into the alveolar bone 1. This is installed, and is provided with a wing plate 21 and a cylinder blade 22, etc., and the description of similar parts will be omitted.

The anterior teeth, premolars, and posterior teeth, where the roots are occasionally gathered, are single root teeth, the lower posterior teeth are mainly 2 roots, and the maxillary posterior teeth are mainly 3 roots. Select one from the first to third embodiments of the invention and perform the procedure. In the implant according to an embodiment of the present invention, the root implantation part is made in a shape similar to the root of natural teeth.

The implant according to the present invention is inserted by tapping from top to bottom instead of turning the root insertion part, so that the number of root insertion parts (conventional fixtures) can be made according to the number of roots of natural teeth. Due to the placement part, it can withstand the occlusal pressure much better and prolong the life of the implant.

The implant of the third embodiment further includes a guiding post 40 that functions as a guide, and the guiding post has three root implantation parts 10; 5), one end has a rod shape extending downward from the lower side of the cover mounting portion 20 at the center between them. The guiding post 40 serves as a guide when placing the three root implants in the maxillary posterior teeth and enables additional support to be obtained.

Implants can be applied immediately after tooth extraction, but to improve accuracy, a bur is used to clean the extraction socket and remove inflammatory tissue after tooth extraction. In addition, it is more preferable to make a model by taking an impression, measure the shape on the model, select or manufacture an appropriate implant, and insert it 1 to 2 weeks after tooth extraction.

* Then, 1 to 2 weeks after extraction, the extraction socket is shaped according to the implant to be placed, and a dedicated bur 60 is used to form a space where a cylinder blade or the like is to be placed.

8 is a partial cutaway view showing a dedicated bur 60 for forming or trimming a space in which a cylinder blade of the present invention is to be placed, partially cut away for convenience of understanding.

The dedicated bur 60 has a cylindrical shape with an upper side closed in order to form a space in the alveolar bone where the cylinder blade 22 is to be placed, and includes a cylindrical grinding part 62 having a surface for grinding, and a center of the inner surface of the cylindrical grinding part. and a post portion 61 extending downward from and having a surface for grinding.

In Fig. 8, the post portion 61 is shown in a shape corresponding to the guiding post of the third embodiment, but it may be made to have a shape corresponding to the root planting portion of the first embodiment. Also, the post portion 61 may be formed without a surface for grinding.

According to one aspect of the present invention, a part corresponding to a conventional fixture and an abutment is an integrated implant in one body, but in special cases, it may be made into a dual structure of a fixture and an abutment like a conventional implant. there is.

According to one aspect of the present invention, there is no need to create a structure for coupling the corresponding part of the conventional implant and the abutment inside, making the fixture part much more robust. there is. In addition, the implant according to one aspect of the present invention does not require additional surgery such as incision of the gum for coupling of the fixture, so the treatment period can be shortened.

According to one aspect of the present invention, by configuring a vertical blade extending longitudinally and a stop bar connecting them transversely, a wing plate bonded to the upper surface of the alveolar bone, and a cylinder blade extending vertically from the end of the wing plate, It has the advantage of obtaining additional fixation and retention in several areas. In addition, the cylinder blade extending vertically from the end of the wing plate can be changed into various shapes. For example, it is not completely circular, the length to the bottom is not constant, or a plurality of perforated holes are formed By allowing the growing bone to pass through the perforated hole, bonding strength with the alveolar bone may be improved.

And, according to one aspect of the present invention, the shape of the fixture (root placement part) similar to the root of the tooth, and the number of fixtures (root placement part) equal to the number of the root of the tooth, closer to the natural tooth and natural contact with the alveolar bone binding can be better induced.

Claims (11)

A root implantation unit 10 implanted where the tooth root was located in the alveolar bone 1; and A cover placement unit (20) integrally formed on the top of the root placement unit (10) and partially implanted from the upper surface of the alveolar bone (1) into the alveolar bone (1) while covering the upper surface of the alveolar bone (1). ); It is characterized in that it is composed of, The cover placement part 20, A wing plate 21 integrally coupled to the upper portion of the root placement unit 10 in a disk shape and transmitting and distributing the occlusal force to the upper surface of the alveolar bone 1; and It includes a cylindrical cylinder blade 22 extending vertically from the edge of the wing plate 21, The cylinder blade 22 is implanted into the alveolar bone 1 from the upper surface of the alveolar bone 1, implant. Two root implantation parts 10 (10; 10-1, 10-2) respectively implanted where two roots of a single tooth were located in the alveolar bone (1); and A cover placement unit integrally formed on the top of the two root insertion units 10 and covering the upper surface of the alveolar bone 1 and partially implanted into the alveolar bone 1 from the upper surface of the alveolar bone 1 (20); characterized in that it is configured to include, The cover placement part 20, A wing plate 21 integrally coupled to the upper portion of the root placement unit 10 in a disk shape and transmitting and distributing the occlusal force to the upper surface of the alveolar bone 1; and It includes a cylindrical cylinder blade 22 extending vertically from the edge of the wing plate 21, The cylinder blade 22 is implanted into the alveolar bone 1 from the upper surface of the alveolar bone 1, implant. three root implantation units (10; 10-3, 10-4, 10-5), respectively, which are placed where three roots of a single tooth were located in the alveolar bone (1); and A cover placement unit integrally formed on the upper part of the three root insertion units 10 and partially implanted from the upper surface of the alveolar bone 1 into the alveolar bone 1 while covering the upper surface of the alveolar bone 1 (20); characterized in that it is configured to include, The cover placement part 20, A wing plate 21 integrally coupled to the upper portion of the root placement unit 10 in a disk shape and transmitting and distributing the occlusal force to the upper surface of the alveolar bone 1; and It includes a cylindrical cylinder blade 22 extending vertically from the edge of the wing plate 21, The cylinder blade 22 is implanted into the alveolar bone 1 from the upper surface of the alveolar bone 1, implant. The method of claim 3, A rod-shaped guiding post, one end of which extends downward from the lower side of the cover installation part 20, at the center between the three root installation parts 10; 10-3, 10-4, 10-5 further comprising; implant. The method according to any one of claims 1 to 3, A plurality of models having different thicknesses of the wing plate 21 are provided, and as the loss of alveolar bone increases, a model having a thicker thickness of the wing plate 21 can be selected, implant. The method according to any one of claims 1 to 3, At least the upper surface of the wing plate 21 is highly polished, A circular trench 21a is provided on the bottom surface of the wing plate 21 so that the bones of the upper surface of the alveolar bone can grow and be filled. implant. The method according to any one of claims 1 to 3, The side of the wing plate 21 is filled with artificial bones as high as the height of the wing plate 21. implant. The method according to any one of claims 1 to 3, A dedicated bur 60 is used to form a space in which the cylinder blade 22 is to be placed in the alveolar bone, The dedicated bur (Bur) 60, Equipped with a cylindrical grinding part 62 of a cylindrical shape in which the upper side is closed, implant. i) root implantation part (10) placed where the tooth root was located in the alveolar bone (1), ii) two root implantation parts (10; 10) respectively implanted in the alveolar bone (1) where the two roots of a single tooth were located -1, 10-2), or iii) three root implantation parts (10; 10-3, 10-4, 10-5) each placed where three roots of a single tooth were located in the alveolar bone (1); It consists of, The root planting unit 10, columnar body 11; and Having a plurality of vertical blades 12 integrally coupled to the outer circumferential surface of the body 11 and having a blade shape extending in the longitudinal direction, implant. In claim 9, The root planting unit 10, A stop bar 13 protruding from the body 11 but protruding at a lower height than the vertical blade 12 and extending in the transverse direction between the adjacent vertical blades 12; further comprising, In the longitudinal direction of the root planting part 10, a plurality of the stop bars 13 are arranged at intervals, implant. The method according to any one of claims 1 to 3, A crown coupling portion 30 integrally formed on the upper portion of the cover placement portion 20, having a retention hole 30a for coupling with the crown 50, and having a closed lower portion; equipped with, implant.

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