KR20190140312A - Implant having a biodegradation material - Google Patents

Abstract

The present invention relates to an implant having a biodegradable material. In particular, the implant includes a fixture body which has an implantation thread provided on an outer peripheral surface thereof and an empty space formed inside a lower end thereof, and is implanted in an alveolar bone, an abutment coupled to the outside of the fixture body, and a biodegradable portion which is filled in the empty space of the fixture body and is biodegradable in the oral cavity over time. It is possible to strengthen a fixing force to the alveolar bone and also to shorten an implant procedure period.

Description

Implants with biodegradable materials {IMPLANT HAVING A BIODEGRADATION MATERIAL}

The present invention relates to an implant having a biodegradable material, and more particularly, to an implant having a biodegradable material that can maximize the bone fusion area between the fixture and the bone.

Dental implants refer to a series of procedures for implanting artificial teeth when natural teeth are lost. In other words, implantation is to fix the artificial tooth after planting a fixture, which is a tooth root made of titanium, etc., which is not rejected to the human body to replace the lost root (root). It is a procedure to restore the function of the teeth.

In general, the components used in the implant procedure include a fixture that is placed as an artificial tooth root using a predetermined drill, an abutment that is coupled onto the fixture, and the abutment is fixed to the fixture. It comprises an abutment screw and an artificial tooth coupled to the abutment.

Here, the fixture, which is a component of the implant, is a component that is placed in a drill hole formed in the alveolar bone by using a drill or the like at a position where the implant is to be operated, and plays a role of an artificial root. Therefore, the fixture should be firmly placed in the alveolar bone.

For this reason, an implantation screw thread is formed on the outer surface of the fixture so as to be firmly coupled to the inner wall portion of the alveolar bone forming the drill hole. These implantation threads are introduced into the alveolar bone so that the fixture and the alveolar bone can be firmly coupled to enhance the fixing force of the fixture.

As such, the implant procedure is to implant a fixture in the alveolar bone using a drill, and then to combine the abutment with the fixture when the bone fusion progresses, and finally the artificial tooth (prosthesis) is put on.

By the way, the implant fixture according to the prior art has a lack of blood supply to the alveolar bone around the implanted screw thread, and the bone fusion area between the fixture and the alveolar bone is insufficient, and even after several months of fusion for healing, This may not happen in a dense manner. In addition, even if the bone fusion area between the fixture and the alveolar bone is insufficient, or if the bone fusion between the fixture and the alveolar bone is formed at the beginning of the fixture placement, if excessive occlusal pressure is applied due to food chewing during several years of use, the vicinity of the fixture Damage to the alveolar bone can be a major cause of implant failure, such as shake and drop of fixtures.

Therefore, after implant placement, the patient succeeds after implant placement by maximizing bone fusion area between fixture and alveolar bone to promote new bone formation, minimize alveolar bone damage, and increase blood flow to alveolar bone around fixation screw. In order to increase the probability, implant fixtures need to be developed.

The present invention has been made to solve the above technical problem, the bone fracture or bone supply due to the lack of contact area or blood supply to the alveolar bone around the implantation screw during the implantation process, new bone formation process and bone fusion process during implantation It is an object of the present invention to provide an implant having a biodegradable substance including a fixture of a new configuration that is firmly fused to the alveolar bone by preventing the occurrence of a shortage of algae and damage to the alveolar bone and causing an implant procedure to fail.

In addition, the present invention, when the bone is absorbed due to inflammation, etc., lack of alveolar bone, or because of the anatomical structures such as the maxillary sinus, the lower alveolar nerve, it is difficult to implant a long fixture or narrow the width of the alveolar bone to implant a large diameter fixture If difficult to do, provide an implant with a biodegradable material comprising a fixture capable of withstanding the occlusal force during mastication even if a shorter fixture or a smaller diameter fixture is implanted For other purposes.

In addition, the present invention is to minimize the damage to the alveolar bone of the patient, and biodegradable substances such as magnesium or magnesium alloy provided inside the fixture of titanium or zirconium are slowly dissolved in the bone and calcium and phosphorus, which are the main components of the bone, After bringing it into a bone-like shape and tissue, it is finally changed into a new bone-like tissue to increase the probability of success after implantation and increase the contact area between the fixture and the alveolar bone. Another object is to provide an implant with a biodegradable material that can be fortified.

Implant having a biodegradable material according to an embodiment of the present invention, the implant thread is provided on the outer peripheral surface, the empty space is formed inside the lower end, the fixture body implanted in the alveolar bone; An abutment coupled to the outside of the fixture body; And a biodegradable part filled in the empty space of the fixture body and biodegradable in the oral cavity over time.

In addition, only a part of the biodegradable part may be filled in the empty space of the fixture body.

In addition, the biodegradable portion facing the opening side of the empty space may be formed in any one of a conical shape and a spiral shape.

In addition, the biodegradable portion may be integrally formed in the empty space of the fixture body by a die casting method.

In addition, a plurality of body holes are formed so that at least one of the bone and acid of the implantation screw thread of the fixture body communicates with the empty space, and the biodegradable portion is filled in the empty space, while being biodegraded in the oral cavity. The empty space can be exposed through the body hole.

In addition, the fixture body has an inner surface concave-convex portion of the concave-convex pattern disposed on the inner surface of the empty space, wherein the biodegradable portion is formed to contact the inner surface concave-convex portion, while the inner surface concave-convex portion is biodegradable in the oral cavity. Can be separated from.

In addition, the fixture body may be disposed on a ceiling surface of the empty space.

In addition, the biodegradable portion is formed to be in contact with the ceiling surface uneven portion of the concave-convex shape, can be separated from the ceiling surface uneven portion while being biodegraded in the oral cavity.

In addition, a plurality of body holes may be formed so that the bone of the implantation thread of the fixture body and the empty space communicate with each other, and the biodegradable portion may have additional holes formed as extensions of the body holes.

In addition, the biodegradable portion may include a biodegradable metal, and the fillture body and the biodegradable metal may be integrally formed by a method using a metal 3D printer.

In addition, the biodegradable portion may include a biodegradable metal. In addition, the biodegradable portion may include pure magnesium or magnesium alloy. In addition, the biodegradable part may include an alloy containing calcium and magnesium, on the premise that the fixture body is made of titanium.

According to one embodiment of the implant with a biodegradable material according to the present invention can achieve the following effects.

First, an inner hole is formed on the bottom of the fixture, and the inner hole is provided with magnesium or magnesium alloy having biodegradable characteristics decomposed in the human body, and a body hole and a thread cutout hole connected to the inside of the fixture are formed. Magnesium in the inner hole of the bottom of the fixture gradually decomposes as time passes after the implant procedure, and new bone is created in place, and the alveolar bone is interspersed with the alveolar bone outside the fixture through the fixture body hole and the threaded cut hole. As a result, the blood flow to the alveolar bone around the implant can be increased to maintain the alveolar bone in a healthy state, thereby shortening the implant treatment period and further strengthening the bone fusion between the alveolar bone and the fixture.

Second, when bones are absorbed due to inflammation, lack of alveolar bone, or due to anatomical structures such as maxillary sinus or lower alveolar nerve, it is difficult to place long fixtures or it is difficult to implant large diameter fixtures due to narrow alveolar bone width. Even short fixtures or small diameter fixtures can have sufficient bone-bonding force to withstand the bite force during chewing.

Third, the body hole formed in the fixture body and the inner hole of the fixture body, the inner unevenness portion and the internal ceiling unevenness portion, so that the fixture and alveolar bone introduced into the alveolar bone can be more firmly coupled during bone fusion between the fixture and the alveolar bone. Alveolar bone is connected to each other inside and outside by the bottom irregularities provided around the bottom of the fixture body, thereby increasing the blood flow to the alveolar bone around the thread, thereby maintaining the healthy state of the alveolar bone, shortening the implant treatment period and reducing the fixture body. The core alveolar bone being filled in the inner hole of the alveolar bone and the alveolar bone outside the fixture body may be strongly connected to further strengthen the bone fusion between the alveolar bone and the fixture.

1 is a cross-sectional view showing an embodiment of an implant having a biodegradable material according to the present invention,
FIG. 2 is a perspective perspective view illustrating a biodegradable part filled in a fixture body and an empty space in the configuration of FIG. 1;
3 is a perspective view illustrating an example of a biodegradable part in the configuration of FIG. 1;
4 is a cross-sectional view taken along the line AA of FIG.
FIG. 5 is a cross-sectional view taken along line AA of FIG. 2 and is a cross-sectional view of a fixture body in which a biodegradable portion is removed.
6 and 7 are plan views illustrating angles of formation of trunk holes formed in the fixture body in the configuration of FIG. 1;
8 and 9 are perspective views showing other examples of the fixture body of the configuration of FIG.
10 is a cross-sectional view taken along the line BB of FIG. 8,
11 and 12 are plan views illustrating the angles of formation of thread cutout holes formed in the fixture body in the configuration of FIG. 9.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The objects, features and advantages of the present invention will be more readily understood by reference to the accompanying drawings and the following detailed description. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

In addition, in describing the component of this invention, terms, such as 1st, 2nd, A, B, (a), (b), can be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. For example, if a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected or connected to that other component, but between each component. It is to be understood that another component may be "connected", "coupled" or "connected".

1 is a cross-sectional view showing an embodiment of an implant having a biodegradable material according to the present invention, Figure 2 is a perspective perspective view showing a biodegradable portion filled in the fixture body and the empty space of the configuration of Figure 1, Figure 3 1 is a perspective view illustrating an example of a biodegradable part in FIG. 1, FIG. 4 is a cross-sectional view taken along line AA of FIG. 2, and FIG. 5 is a cross-sectional view taken along line AA of FIG. 2. It is a cross section of the body.

The implant according to the present invention can be applied to both internal and external connection schemes. The fixture can also be applied to both straight and toothed (wedge) shapes.

1 and 2, an implant having a biodegradable material according to an embodiment of the present invention may include a fixture body 6, an abutment, and a biodegradable part 100. have.

The fixture body 6 may have an implantation screw thread 7 on its outer circumferential surface. The fixture body 6 may have an empty space 8 inside the lower end. The fixture body 6 may be placed in the alveolar bone 4.

The abutment may be coupled to the outside of the fixture body 6. The abutment may be a prefabricated abutment that is made in advance according to the fixed fixture, and a custom abutment that is tailored to the shape of the gums and teeth of each patient.

The fixture body 6 may have a screw hole (not shown) formed at one end thereof in the longitudinal direction to be recessed downwardly so that the abutment can be coupled thereto. The screw hole of the fixture body 6 and the screw shaft formed on the outer circumferential surface of the abutment may be screwed. Thereby, the abutment can be fixed to the fixture body 6.

The empty space 8 may be formed in a shape recessed upwardly on the other end surface in the longitudinal direction of the fixture body 6. One end to which the abutment of the fixture body 6 is coupled and the other end to which the empty space 8 is formed may face each other. The screw hole of the fixture body 6 and the empty space 8 may be partitioned by a blocking wall formed in the middle so as not to communicate with each other.

The empty space 8 may be cylindrical, but is not limited thereto, and may have a shape such as a polygon.

The fixture body 6 may include at least one of the inner surface uneven portion 112 and the ceiling surface uneven portion 114.

The inner surface uneven portion 112 may be disposed on the inner surface of the empty space 8 of the fixture body 6. The inner surface concave-convex portion 112 may be shaped to widen the surface area, such as concave-convex pattern. As shown in FIG. 5, the inner side uneven portion 112 may have a female thread shape. The inner surface uneven portion 112 may improve the contact area between the newly formed alveolar bone 4 and the fixture body 6.

The ceiling surface uneven portion 114 may be disposed at a ceiling portion of the empty space 8 of the fixture body 6. The ceiling surface concave-convex portion 114 may have various patterns such as a columnar thread shape, an oblique thread shape, a wave shape, a checkered shape, and the like. The ceiling surface uneven portion 114 may increase the bone fusion area like the inner surface uneven portion 112.

The fixture body 6 may have an edge concave-convex portion 116 at its lower end. The edge concave-convex portion 116 may have various shapes, such as a triangular pattern, a wave pattern, and a sawtooth pattern, along the circumference of the lower end of the fixture body 6. The edge concave-convex portion 116 may not only widen the contact area with the alveolar bone 4 to be placed, but also enable self-tapping, which is a function of cutting the alveolar bone 4 during implantation.

The biodegradable part 100 may be filled in the empty space 8 of the fixture body 6. The biodegradable part 100 may be biodegraded in the oral cavity over time.

Referring to FIG. 4, the biodegradable part 100 may be formed to fill all of the empty spaces 8 of the fixture body 6, and may be formed to fill a part of the empty spaces 8. For example, as indicated by the reference numeral '100a' of FIG. 4, the width of the hollow space 8 may be formed in a conical shape that becomes smaller in width toward the lower end. Alternatively, although not shown, one end of the biodegradable part 100 (the opening side of the empty space 8) may be formed in a spiral shape.

The biodegradable part 100 may include a biodegradable metal. Biodegradable metals mean metals that have a property of melting and extinguishing after a certain period of time, in contrast to general metal materials which do not melt in vivo. The biodegradable metal may include at least one metal or metal alloy of magnesium, calcium, manganese, iron, zinc, silicon, yttrium, zirconium, and gadolinium. The biodegradable part 100 is preferably a magnesium or magnesium alloy of the biodegradable metal.

The biodegradable part 100 slowly melts in the empty space 8 of the fixture body 6 and collects calcium and phosphorus, which are the major constituents of the bone, and changes it into a bone-like shape and tissue to eventually change the empty space ( 8) can be filled with the generated bone.

1 and 2, the fixture body 6 may include a plurality of body holes 9 perforated to communicate with the empty space 8 formed inside the lower end thereof.

The plurality of body holes 9 may be perforated to communicate from the outer circumferential surface of the fixture body 6 to the empty space 8. A plurality of body holes 9 may be formed on the outer circumferential surface of the fixture body 6 forming a valley between the implantation screw thread 7 and the implantation screw thread 7 in the region where the empty space 8 is formed. The plurality of body holes 9 may be formed so that the mountains of the implantation screw 7 and the empty space 8 communicate with each other.

Preferably, the plurality of body holes 9 may be formed in plural numbers spaced apart along the valleys formed by the implantation screw thread 7 and the implantation screw thread 7. Here, the implantation screw thread 7 may be provided to form N layers on the outer circumferential surface of the fixture body 6.

4 and 5, the plurality of trunk holes 9 may perform a function of maintaining a constant amount of blood supply to the empty space 8 of the fixture body 6. Therefore, the new bone can be quickly generated and filled in the empty space 8 of the fixture body 6 placed in the alveolar bone 4. In addition, the newly generated bone performs a bridge function to connect the alveolar bone 4 on the outside of the fixture body 6 through the plurality of body holes 9 so that the fixture body 6 is more firmly fixed. Can play a role.

The biodegradable portion 100 may extend to a plurality of body holes 9. That is, the biodegradable part 100 may include a plurality of protrusions (not shown) disposed in at least a portion of the plurality of body holes 9. The protrusion of the biodegradable part 100 may help to remove the empty space that may be formed in the plurality of trunk holes 9, and to regenerate the alveolar bone after the procedure.

The biodegradable part 100 may be integrally formed in the empty space 8 of the fixture body 6 by a die casting method. For example, when the material constituting the fixture body 6 is made of titanium or zirconium, first, the fixture body 6 may be molded from the corresponding material, but may be molded to have an empty space 8. Thereafter, the portion corresponding to the empty space 8 may be filled with the die casting molding method by melting the biodegradable metal forming the biodegradable part 100.

The biodegradable part 100 and the fixture body 6 may be formed using a metal 3D printing method. The biodegradable part 100 and the fixture body 6 may be integrally formed by using a metal 3D printer for 3D printing various metals.

The biodegradable part 100 may be placed together with the fixture body 6 in the oral cavity so that the biological tissue is in contact with the empty space 8 through the body hole 9 while being biodegraded in the oral cavity as a predetermined time passes. have.

In addition, the biodegradable portion 100 may be separated from the medial side uneven portion 112 and the ceiling surface uneven portion 114 while biodegradable in the oral cavity.

The implant according to the present embodiment may further include an artificial tooth 5 coupled to the outside of the abutment.

6 and 7 are plan views illustrating angles of formation of trunk holes formed in the fixture body in the configuration of FIG. 1.

The trunk hole 9 formed on the outer circumferential surface of the fixture body 6 has a structure that communicates from the outer circumferential surface of the fixture body 6 to the empty space 8, as shown in FIGS. 6 and 7, The hole 9 may be formed to be inclined at a predetermined angle a toward the empty space 8 side. That is, when forming the body hole 9 by drilling the fixture body 6, it can be made to achieve the predetermined angle (a).

Here, the predetermined angle (a) is preferably set to an angle corresponding to the rotation direction of the implantation screw thread 7 when the fixture body 6 is placed in the alveolar bone 4. Specifically, as shown in FIG. 7, when viewing the fixture body 6 in a planar cross section, the body hole 9 is formed to be inclined with respect to the tangent passing through the outer surface of the fixture body 6. Can be. The predetermined angle (a), which is an angle between the center line and the tangent of the trunk hole 9, may be set to be an acute angle range, and may be formed to be inclined through the outer circumferential surface of the fixture body 6 to the empty space 8. .

6 and 7, in the implant with a biodegradable material according to an embodiment of the present invention, the implantation screw thread (7) is formed in the right direction, the body hole (9) is formed to be inclined through Is showing.

The arrow direction RD of FIGS. 6 and 7 indicates the rotation direction of the fixture body 6 when the insertion screw thread 7 is in the right screw direction. As such, when the fixture body 6 is rotated in the right screw direction and placed in the alveolar bone 4, the bone fragments of the alveolar bone 4 which have been cut out may be filled in the trunk hole 9 formed to be inclined.

Up to now, the case where the mounting screw 7 is formed in the right screw direction has been described as an example. However, even when the mounting screw 7 is formed in the left screw direction, the drilling direction of the body hole 9 is determined by the fixation body 6. It may be formed at a predetermined angle (a) corresponding to the rotation direction for the implantation. That is, when the implantation screw thread 7 is formed in the left screw direction, the angle a between the tangent passing through the center line of the trunk hole 9 and the outer circumferential surface of the fixture body 6 is set to be an acute angle range. Can be. At this time, when the fixture body 6 is rotated in the direction to be placed in the alveolar bone 4, bone fragments cut out from the alveolar bone 4 by the implantation screw 7 may be filled in the trunk hole 9.

As such, when the biodegradable part 100 in the empty space 8 is decomposed by being filled in the torso hole 9 formed in the fixture body 6 when the fixture body 6 is placed on the alveolar bone 4. It can also promote the creation of new bones.

The trunk hole 9 may serve as a channel for alveolar bone regeneration after being filled by the protrusion of the biodegradable part 100, or may be filled by bone fragments of the subject during the procedure after being manufactured into an empty space.

8 and 9 are perspective views illustrating other examples of the fixture body in FIG. 1, and FIG. 10 is a cross-sectional view taken along line B-B of FIG. 8.

Referring to FIG. 8, in one embodiment of an implant with a biodegradable material according to the invention, the fixture body 6 is formed with a threaded hole 10 formed to penetrate the upper and lower surfaces of a plurality of implantation threads 7. It may further include.

That is, the general thread is formed so that the peak and the valley is continuous, where the threaded hole 10 may be formed so that the adjacent bone and the bone is in communication with each other through the peak of the mounting screw (7). The threaded hole 10 may be formed in all of the implantation threads 7 composed of N layers, as well as in some of the implantation threads 7.

After a predetermined period of time after the fixture body 6 is placed in the alveolar bone 4, a new bone is generated from the alveolar bone 4 to fill the threaded hole 10, thereby filling the fixture body 6 with the alveolar bone 4. ) Can be fixed more firmly.

Here, the threaded holes 10 may be formed at positions that are shifted with respect to an arbitrary reference line in the vertical direction of the fixture body 6, respectively.

Meanwhile, referring to FIG. 9, in one embodiment of an implant having a biodegradable material according to the present invention, the fixture body 6 may include a thread cut part 11 in which a part of a plurality of implantation threads 7 is cut off. It may further include.

The thread cutting part 11 may be formed in a predetermined shape (a substantially trapezoidal rectangular shape in the embodiment of the present invention) from the leading end of the implantation screw 7 to the proximal end of the bone side. The mutually adjacent valleys of the implantation threads 7 can be communicated by the thread cut portions 11 of the implantation threads 7. The thread cut portion 11 may also be formed on all of the implantation threads 7 made of N layers, as well as on some of the implantation threads 7.

Further, the fixture body 6 further includes a thread cutout hole 12 formed in the outer circumferential surface of the fixture body 6 exposed by the thread cutout 11 and formed in a perforated communication with the empty space 8. can do.

Here, the thread cut portion 11, like the threaded hole 10, may be formed at a position that is shifted with respect to any reference line in the vertical direction of the fixture body 6, respectively.

Meanwhile, referring to FIG. 10, the body hole 9 formed in the fixture body 6 may be formed to penetrate a part of the biodegradable part 100 filled in the empty space 8.

11 and 12 are plan views illustrating angles of formation of thread cutout holes formed in the fixture body in the configuration of FIG. 9.

11 and 12, the thread cut hole 12 is also formed to communicate with the empty space 8 on the outer circumferential surface of the fixture body 6, but may be formed to be inclined at a predetermined angle (a).

Further, the drilling direction of the thread cut hole 12 of the fixture body 6 may be set to a direction corresponding to the rotational direction when the fixture body 6 is placed. The specific formation method may be the same as that of the trunk body 9 above.

Therefore, when the fixture body 6 is rotated to be placed in the alveolar bone 4, the bone fragments generated by the implantation screw 7 are filled in the thread cut hole 12, and the biodegradable part is passed over time. As the 100 decomposes in the empty space 8, it can be more easily fused with the main configuration of the newly generated bone.

One embodiment of an implant with a biodegradable material according to the present invention, as shown in Figs. 1 to 12, is a hollow space 8 in the fixture body 6 and a body hole 9 for communicating it, respectively. And a threaded cut hole 12, and the biodegradable portion 100 is inserted into the empty space 8 to further strengthen the bone fusion between the fixture body 6 and the alveolar bone 4.

That is, the implant with a biodegradable material according to an embodiment of the present invention, forms an empty space (8) inside the fixture body 6, the implantation into the alveolar bone (4) in the empty space (8) By inserting a biodegradable metal which is then slowly biodegraded, it is possible to further promote the generation of bone by increasing the blood flow to the new bone produced from the alveolar bone (4). This can keep the resulting bones in a healthy state. As a result, the duration of implant treatment can be shortened.

In addition, the implant having a biodegradable material according to an embodiment of the present invention, by forming the inner surface uneven portion 112 and the ceiling surface uneven portion 114 in the empty space 8, the fixture body (6) When the biodegradable part 100 is decomposed after the implantation of the alveolar bone 4 of the bone, and the new bone is filled into the empty space 8, the bone fusion between the new bone and the fixture body 6 is broadened and strengthened. Have a structure.

In addition, as the biodegradable portion 100 filled in the empty space 8 of the fixture body 6 is gradually biodegraded in the oral cavity, calcium and phosphorus, which are the main components of the bone necessary for the production of the alveolar bone 4, are collected around. By changing it into a bone-like shape and tissue, the implant fixation time can be significantly reduced.

In particular, one embodiment of the implant with a biodegradable material according to the present invention, the bone is absorbed due to inflammation, etc. lacking the alveolar bone (4) to be implanted fixture body (6), maxillary sinus, inferior alveolar nerve Due to the anatomical structure, it is possible to derive a more differentiated effect when it is difficult to insert a thin fixture body 6 or a long fixture body 6 having a length of 10 mm or more.

For example, if the essential specification of the fixture body 6 to be placed in the alveolar bone 4 as described above should be adopted to a certain length or less, a fix of one embodiment of the implant with a biodegradable material according to the present invention When the body body 6 is placed, the bone fusion area with the alveolar bone 4 newly generated by the inner surface uneven portion 112 and the ceiling surface uneven portion 114 of the empty space 8 can be maximized. Therefore, a relatively short and small diameter fixture body 6 may also be adopted and placed in the alveolar bone 4. In addition, through the decomposition of the biodegradable portion 100 provided in the empty space 8 can further promote the generation of new bone.

In addition, one embodiment of the implant with a biodegradable material according to the invention is a plurality of body holes 9 and threaded cut holes to communicate the outer peripheral surface of the fixture body 6 and the empty space 8 therein. (12) is formed, thereby decomposing in the oral cavity of the biodegradable portion 100 to promote the generation of new bone, and at the same time the newly formed bone is filled in the plurality of trunk holes 9 and the threaded cut hole 12 While the alveolar bone 4 is restored to form a net-like structure between the fixture body 6 and the empty space 8, the fixture body 6 is placed in the alveolar bone 4 to have a considerably strong supporting force. Can be in a closed state.

That is, the alveolar bone 4 on the outer side of the fixture body 6 and the inner alveolar bone 4 formed while newly rising in the empty space 8 are interconnected, so that the alveolar bone 4 is simply an empty space ( 8) Significant differences can be made in their bearing capacity from those which are placed to separate through 8). This is because after the fixture body 6 is placed in the alveolar bone 4, the damage of the alveolar bone 4 due to persistent occlusal pressure or periodontal inflammation occurring in the oral cavity of the patient, which is formed for food intake, and failure of implantation, shaking, etc. Can be completely prevented.

In addition, one embodiment of the implant with a biodegradable material according to the present invention, by having a body hole 9 and a thread cut hole 12 in the outer peripheral surface of the fixture body 6, the fixture body 6 The empty space of the fixture body 6 by filling the body hole 9 and the thread cutout hole 12 with bone fragments (autogenous bones) generated by the implantation screw 7 when the bone is placed in the alveolar bone 4. ) Can be created naturally from the newly formed bone (supporting bone).

In addition, the threaded hole 10 is formed to connect the bone and the bone of the implantation screw (7), a new bone penetrating the resulting is generated as a result of the contact area of the alveolar bone (4) in contact with the implantation screw (7) By increasing the blood supply by increasing, the alveolar bone 4 in a healthy state is maintained and has a stronger fixing force.

On the other hand, one embodiment of the implant with a biodegradable material according to the present invention, a plurality of threaded holes 10 and the thread cut portion 11 formed in the implantation thread 7 of the fixture body 6 (hereinafter, ' Thread holes, etc. (10,11) ') are not disposed in a straight up and down form, but are formed to be disposed at mutually displaced positions based on an arbitrary reference line in the up and down direction, and thus may have a stronger fixing force.

That is, when a plurality of thread holes, etc. (10, 11) formed in the fixture body (6) are arranged in a straight line, when the gum inflammation occurs, the alveolar bone newly formed in the thread holes (10, 11) connected in a vertical line ( According to 4) the periodontitis serves as a kind of passage to the root end, there is a fear that the dropout of the fixture body (6) is promoted.

By the way, in the case of an implant having a biodegradable material according to an embodiment of the present invention, the periodontitis caused by the inflammation of the gum is caused by a plurality of thread holes, etc. (10, 11) are arranged in a substantially zigzag form, not up and down straight. It can be blocked by the insertion screw thread 7 and limited to a part.

In addition, the implant with a biodegradable material according to an embodiment of the present invention, as an extension of the body hole 9, through the additional hole (9 ') formed in the biodegradable portion 100, as described above Likewise, the bone fragments cut out by the implantation screw 7 are introduced, so that the conversion from the autologous bone to the support bone is very easy.

In the above, an embodiment of an implant having a biodegradable portion according to the present invention has been described in detail with reference to the accompanying drawings. However, the embodiment of the present invention is not necessarily limited to the above-described embodiment, and it is natural that various modifications and equivalents can be made by those skilled in the art. will be. Therefore, the true scope of the present invention will be determined by the claims described below.

6: fixture body 7: mounting thread
8: empty hole 9: body hole
9 ': additional hole 10: threaded hole
11: thread cutout 12: thread cutout hole
100: biodegradable portion 112: inner side uneven portion
114: ceiling irregularities

Claims (9)

Fixing body is provided on the outer peripheral surface, the empty space is formed inside the lower end, the fixture body implanted in the alveolar bone;
An abutment coupled to the outside of the fixture body; And
And a biodegradable part filled in the empty space of the fixture body and biodegradable in the oral cavity over time. The method of claim 1,
And the biodegradable portion is partially filled in the empty space of the fixture body. The method of claim 1,
The biodegradable portion of the hollow space toward the opening side, the implant having a biodegradable material is formed in any one of a conical shape and a spiral shape. The method of claim 1,
The biodegradable implant having a biodegradable material is integrally molded by the die casting method in the empty space of the fixture body. The method of claim 1,
A plurality of body holes are formed such that at least one of the valleys and the mountains of the implantation threads of the fixture body communicate with the void space,
The biodegradable part is implanted with a biodegradable material that is filled in the empty space, the biodegradable in the oral cavity to expose the empty space through the body hole. The method of claim 1,
The fixture body has an inner side concave-convex portion of the concave-convex pattern, which is disposed on the inner side of the empty space,
The biodegradable portion is formed to be in contact with the inner surface concave-convex portion, the biodegradable implant in the oral cavity is separated from the inner surface concave portion. The method of claim 1,
The fixture body has a convex concave-convex portion of the concave-convex pattern disposed on the ceiling surface of the empty space,
The biodegradable part is implanted with a biodegradable material is formed in contact with the ceiling surface concave-convex portion of the concave-convex shape is separated from the ceiling surface concave-convex portion while being biodegraded in the oral cavity. The method of claim 1,
A plurality of body holes are formed so that the bone of the mounting screw of the fixture body and the empty space communicate with each other,
The biodegradable implant, wherein the biodegradable portion is formed with an additional hole as an extension of the body hole. The method of claim 1,
The biodegradable portion comprises a biodegradable metal,
And the fixture body and the biodegradable metal are integrally molded by a method using a metal 3D printer.

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