WO2020032607A1

WO2020032607A1 - Shielding membrane for regenerating periodontal tissue

Info

Publication number: WO2020032607A1
Application number: PCT/KR2019/009943
Authority: WO
Inventors: 김수홍
Original assignee: (주) 코웰메디
Priority date: 2018-08-08
Filing date: 2019-08-08
Publication date: 2020-02-13
Also published as: KR101998847B1

Abstract

Disclosed is a shielding membrane for regenerating periodontal tissue, wherein a position to which an inserted material for an implant is to be coupled can be rapidly and easily adjusted according to a procedure region. According to one embodiment, disclosed is a shielding membrane for regenerating periodontal tissue, the shielding membrane comprising: a core plate made of a metal plate material of which the shape may be changed by an external force, and having multiple coupling holes formed therethrough such that the core plate is position-adjusted on and coupled and fixed to an inserted material for an implant; a first shielding membrane laminated on one side surface of the core plate; and a second shielding membrane laminated on the other side surface of the core plate, and integrally bonded to the first shielding membrane. The coupling holes are either formed through the core plate while being spaced apart from each other, or continuously formed so as to be in contact with and communicate with each other along the lengthwise or widthwise central line of the core plate.

Description

Periodontal regeneration shield

The present disclosure relates to a periodontal tissue regeneration shield that wraps and supports an alveolar bone defect filled with bone graft material during an osteoinductive regeneration procedure.

Unless otherwise indicated herein, the contents described in this identification are not prior art to the claims of this application and the description in this identification is not admitted to be prior art.

In general, teeth are body tissues responsible for the chewing function that helps to digest food by crushing or grinding food. When these teeth are lost due to tooth extraction, for example, tooth decay, they cause chewing problems, so they can't chew food properly and can't digest well. do. For this reason, teeth have long been recognized as an important part of the body and play an important role in leading a healthy life.

In general, humans have a total of 32 teeth, including 16 teeth in the maxilla and 16 teeth in the mandible, and after the childish teeth are replaced with permanent teeth once in childhood, they use oral activity for a lifetime. To perform.

Since a human tooth is replaced with a permanent tooth once in childhood, when a tooth is lost, new teeth are no longer formed. Thus, a dental tooth repairs a tooth or a surrounding tissue that has been lost through prosthetic treatment.

For example, in the case of universal prostheses such as bridges, partial dentures, and dentures, there is a problem of causing inconvenience in use due to foreign matter. For this reason, dental implants have recently been in the spotlight in the event of tooth defects, which can restore almost all the same functions and appearance as natural teeth without damaging the surrounding teeth or tissues.

Dental implants are largely composed of a fixture fixed to the alveolar bone, an abutment coupled to the fixture, and a crown integrally coupled to the abutment. Fixtures correspond to artificial roots embedded in the alveolar bone, abutments serve to connect the fixtures and crowns, and crowns correspond to artificial teeth that reproduce the same shape and function as natural teeth.

On the other hand, the dental implant procedure is the first step to form a groove corresponding to the fixture in the alveolar bone through drilling and tapping to embed the fixture in the alveolar bone, and to attach the abutment to the implanted fixture to install the artificial tooth Consists of steps.

In the dental implant procedure, the dental implant can be firmly fixed only if there is a sufficient amount of alveolar bone intact to place the dental implant in the site where the tooth is lost. However, if a portion of the alveolar bone is missing due to trauma, periodontal disease destruction, extraction and root anterior lesion, the remaining alveolar bone alone cannot sufficiently support the fixture.

In the case described above, the bone graft material can be performed as a new alveolar bone after filling a bone graft material such as autologous bone or artificial bone in the defective part, which is called bone guide regeneration (GBR). It is called).

In order to perform bone guided regeneration, after filling the bone graft (artificial bone or autologous bone) (bone graft) to the defective area, and to cover the periodontal tissue regeneration shielding to maintain the required form.

The periodontal tissue regeneration shield is a membrane that provides a space for bone formation by preventing the penetration of fibroblasts originating from soft tissues such as gums into the bone graft during the period when the alveolar bone is restored to normal levels. Fibroblasts originating from soft tissues, such as gums, generally occlude alveolar bone graft sites and thus prevent alveolar bone production. Therefore, the alveolar bone graft site should be separated from soft tissues such as gums through a periodontal tissue regeneration mask.

As an example of such a periodontal tissue regeneration shielding membrane, Korean Patent Publication No. 10-2013-0083204 (published on July 22, 2013) is disposed on the defect of the alveolar bone to form a space for regeneration of the alveolar bone or to surround the bone graft material In the dental membrane, which is fixed by the implant insert is inserted into the alveolar bone is fixed to the membrane, the upper portion surrounding the upper surface of the alveolar bone defects filled with bone graft material, and the bone graft material is bent downward from the upper side Comprising a side bent portion surrounding the side of the filled alveolar bone defect portion, wherein the upper portion is disposed in a portion corresponding to the portion is inserted into the implant insert and the central portion is formed with a central hole to which the implant insert is coupled And arranged to surround at least a portion of the central portion and into the central portion. Projecting the image side, the membranes for dentistry, characterized in that it comprises a wave pillar forming portion for guiding so as to form a convexly protruding upward on the bone to be reproduced wave pillars are provided.

In addition, the Republic of Korea Patent Publication No. 10-2016-0091195 (2016.08.02.) Is placed on the defect of the alveolar bone to form a space for regeneration of the alveolar bone or in the periodontal tissue regeneration membrane surrounding the bone graft material, bone graft material is filled The coupling portion surrounding the upper surface of the alveolar bone defect, and the bending portion is bent downward from the coupling portion to form a curved surface as a whole, and a plurality of holes formed in the side is formed, the coupling portion, the implant is inserted into the alveolar bone A central hole through which the insert can penetrate, a coupling side portion protruding from the side edge of the coupling portion and bent to surround the bone graft material, and a coupling upper portion protruding from the upper end of the coupling portion and bent to surround the bone graft material The side bent portion protrudes from both edges of the side bent portion. A side cover part bent and bent toward a bone defect, and a bottom bent part protruding from a lower end of the side bent part and disposed adjacent to the side cover part and bendable independently of the side cover part. The periodontal tissue regeneration membrane is an absorbent periodontal tissue regeneration membrane, characterized in that the biodegradable polymer material.

In addition, the Republic of Korea Patent Registration No. 10-1731057 (2017.04.27.) Has at least one contact portion and is configured to have a thin plate-shaped body formed with a plurality of extensions around the contact portion, the titanium core capable of deformation of the shape by an external force And a first PTFE (polytetrafluoroethylene) membrane provided on one side of the titanium core, and a second PTFE membrane provided on the other side of the titanium core.

However, the above-described periodontal tissue regeneration shielding membrane has a structure in which a single fastening hole for fastening and fastening is fixed to the upper part of the fixture, and thus it is difficult to adjust the fastening site according to the surgical site. There is a problem that must be separately cut or additionally formed fastening hole.

The purpose of the present invention is to provide a periodontal tissue regeneration shield so that the fastening position of the implant insert can be quickly and easily adjusted according to the surgical site.

In addition, to provide a periodontal tissue regeneration shield so that the fastening position for the implant insert can be finely adjusted according to the surgical site.

In addition, it is not limited to the technical problems as described above, it is apparent that another technical problem may be derived from the following description.

Disclosed is a core plate made of a metal plate capable of shape deformation by external force and a plurality of fastening holes penetrated so as to be fastened and fixed on an implant insert, and a first shield laminated on one side of the core plate. In one embodiment, a membrane for regenerating a periodontal tissue including a membrane and a second shielding membrane laminated on the other side of the core plate and integrally bonded to the first shielding membrane are provided.

According to a preferred feature of the disclosure, the fastening holes may be spaced apart from each other, or may be continuously formed in communication with a plurality of the plurality along the longitudinal center line of the core plate in the longitudinal direction or the width direction.

In the periodontal tissue regeneration shielding membrane according to the present disclosure, as a plurality of fastening holes are formed in the core plate, the fastening position of the implant insert can be quickly and easily adjusted according to the surgical site, thereby increasing the convenience of the procedure.

In addition, the membrane for regenerating periodontal tissue according to the disclosure, it is possible to continuously form a plurality of fastening holes connected to each other in communication with the core plate, so that the fastening position for the implant insert can be finely adjusted according to the surgical site more precise and effective bone guidance There is an advantage that can be a regenerative procedure.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

Figure 1 is a cross-sectional view of the use state of the periodontal tissue regeneration shield in accordance with an embodiment of the disclosed contents.

Figure 2 is a perspective view of the periodontal tissue regeneration shielding film according to an embodiment of the disclosure.

Figure 3 is an exploded perspective view of the periodontal tissue regeneration shielding membrane according to an embodiment of the disclosure.

Figure 4 is a planar structure diagram of various embodiments of the core plate in the membrane for regenerating periodontal tissue according to an embodiment of the present disclosure.

5 is a planar structural diagram of various embodiments of a periodontal tissue regeneration shielding membrane according to an embodiment of the disclosed contents

Figure 6 is a planar view illustrating the fastening position adjustment of the periodontal tissue regeneration shielding membrane according to an embodiment of the present disclosure.

Figure 7 is a perspective view after the molding of the periodontal tissue regeneration shielding film according to an embodiment of the present disclosure.

Hereinafter, with reference to the accompanying drawings looks at the configuration and effect of the periodontal tissue regeneration shield according to a preferred embodiment. For reference, in the drawings, each component is omitted or schematically illustrated for convenience and clarity, and the size of each component does not reflect the actual size. In addition, the same reference numerals throughout the specification refer to the same components and reference numerals for the same components in the individual drawings will be omitted.

1 is a cross-sectional view illustrating the use state of the periodontal tissue regeneration shield according to an embodiment of the present disclosure.

The periodontal tissue regeneration shield 1 according to one embodiment of the disclosure is a bone fastened to the upper end of the implant (3) buried in the bone in the bone during regeneration procedure as shown in Figure 1 Graft fills the alveolar bone defect and serves to support it.

The periodontal tissue regeneration shield (1) according to the embodiment of the present disclosure at the same time prevents the infiltration of fibroblasts derived from soft tissues such as gums into the bone graft material during the period of recovery of the scarce alveolar bone to the normal level Support the bone graft to maintain the required shape.

2 is a perspective view of a periodontal tissue regeneration shield according to an embodiment of the disclosure, Figure 3 is an exploded perspective view of the periodontal tissue regeneration shield according to an embodiment of the disclosure.

As shown in FIGS. 1 and 2, the shielding membrane 1 for periodontal tissue regeneration according to an embodiment of the present disclosure is made of a metal plate capable of deforming shape by external force and is positioned on an implant insert 3. Core plate 10 through which a plurality of fastening holes 11 are formed to be adjusted and fastened, the first shielding membrane 20 stacked on one side of the core plate 10, and the other of the core plate 10. The second shield membrane 30 is laminated on the side and integrally bonded to the first shield membrane 20.

The core plate 10 may be interposed between the first shielding membrane 20 and the second shielding membrane 30 to maintain the periodontal tissue regeneration shielding membrane 1 according to an embodiment of the disclosure. By forming a core material to be made, for example, using a metal material such as titanium or titanium alloy can be manufactured in the form of a thin film, for example 0.01 to 0.1mm thick.

Titanium or titanium alloys are light, nonmagnetic, excellent in mechanical properties such as corrosion resistance, strength, and toughness, and are also very suitable for use in dental implants because of their excellent biocompatibility. The core plate 10 made of titanium or titanium alloy is cut and processed by laser or the like.

On the core plate 10, the fastening holes 11 for fastening and fastening on the implant insert 3 are formed in a plurality, so that the fastening position can be easily adjusted according to the surgical site or the alveolar bone defect.

4 is a planar structural diagram of various embodiments of a core plate in a membrane for regenerating periodontal tissue according to an embodiment of the present disclosure.

The plurality of fastening holes 11 formed on the core plate 10 may be spaced apart at regular intervals according to a plurality of rows and columns, as shown in FIGS. As shown in FIG. 4, it is preferable that a plurality of the core plates 10 are continuously connected to each other by being connected to each other along the center line in the longitudinal direction or the width direction of the core plate 10.

The first shielding membrane 20 and the second shielding membrane 30, which are stacked on both sides of the core plate 10, form a shielding body of the shielding membrane 1 for periodontal tissue regeneration according to an embodiment of the disclosed contents. to be.

The first shielding membrane 20 and the second shielding membrane 30 are preferably made of a synthetic resin material, in particular, polytetrafluoroethylene (PTFE) sheet.

Polytetrafluoroethylene (PTFE) is a fluorine-based polymer known under trade names such as Dupont and Fluon (ICI). Polytetrafluoroethylene (PTFE) forms a very stable compound due to the strong chemical bonding of fluorine and carbon, resulting in almost perfect chemical inertness and heat resistance (stable at 250 ° C), non-tackiness, good insulation and low coefficient of friction. And is particularly suitable as a material for dental shielding materials due to its non-adhesive nature.

As the first shielding membrane 20 and the second shielding membrane 30, non-stretched general polytetrafluoroethylene (PTFE) may be used, or stretched polytetrafluoroethylene (e-PTFE) may be used. have. In addition, the thickness of the first shielding membrane 20 and the second shielding membrane 30 preferably has a thickness of 0.01 to 0.1mm, for example.

It is preferable that the first shielding membrane 20 and the second shielding membrane 30 are integrally joined by heat fusion or ultrasonic fusion in a state in which the core plate 10 is surrounded on both sides. The first shielding membrane 20 and the second shielding membrane 30 are integrally fused to each other in the outer circumference of the core plate 10 and in the fastening hole 11.

In addition, it is preferable that both surfaces of the core plate 10 in contact with the first shielding membrane 20 and the second shielding membrane 30 are fine patterned by, for example, a laser or the like to increase the bonding area.

5 is a planar structural diagram of various embodiments of a periodontal tissue regeneration shield according to one embodiment of the disclosed contents.

In the periodontal tissue regeneration shielding membrane 1 according to an embodiment of the present disclosure, a plurality of fastening holes 11 are integrally formed between the first shielding membrane 20 and the second shielding membrane 30 by the core plate 10. It is formed into an intervening structure.

At this time, the plurality of fastening holes 11 formed in the core plate 10 are continuously formed so as to be connected to each other in communication with each other along the center line in the longitudinal direction or the width direction of the core plate 10, as shown in FIG. 6. As described above, it is particularly preferable that the core plate 10 is formed in a crisscross shape along the longitudinal center line and the longitudinal center line in the width direction.

In addition, when the operator cuts the periodontal tissue regeneration shielding film 1 according to an embodiment of the disclosure according to the treatment site, the core plate 10 has a crisscross shape in the center so that the cut surface of the core plate 10 is not exposed. It is preferable to have a structure in which concentric arc-shaped lines are connected to each other by radial connecting lines on both sides or at least one side along a longitudinal direction with respect to the fastening hole 11 formed as a.

At this time, three concentric arc-shaped lines are preferably spaced apart from each other, and the radial connecting line is formed of only one connecting across the center of the concentric arc-shaped line, or the center of the concentric arc-shaped line. It can be formed in three connecting across both ends.

In addition, when the concentric arc-shaped lines are formed only on one side of the fastening hole 11 in which the structures connected to each other by the radial connecting line are formed in a cross shape, the straight structure is extended to the other side of the fastening hole 11. Can be.

As shown in FIG. 5, the core plate 10 has a concentric arc-shaped line formed on both sides or at least one side of the fastening hole 11 formed in a crisscross shape at the center thereof by a radial connecting line. When formed in a structure that is connected to each other, the operator of the first period of polytetrafluoroethylene (PTFE) when cutting the periodontal tissue regeneration shielding membrane (1) according to an embodiment of the disclosed content with scissors or the like to fit the shielding site And since the second shield membrane (20, 30) is used to cut only the parts fused to each other, it is very easy to cut to fit the treatment site, and the titanium plate 10 made of titanium is hardly exposed through the cutting surface after the procedure Patient pain during regeneration of periodontal tissue can be minimized.

In addition, as the shrinkable internal void space is secured in the core plate 10, the periodontal tissue regeneration shielding membrane 1 according to an embodiment of the present disclosure after regeneration of the periodontal tissue can be easily removed without large resistance.

6 is a planar structural diagram illustrating the fastening position adjustment of the shielding membrane for periodontal tissue regeneration according to one embodiment of the disclosed contents.

In the case of the periodontal tissue regeneration shielding membrane 1 according to an embodiment of the present disclosure, a plurality of fastening holes 11 are formed in the core plate 10 and correspond to the fastening holes 11 of the core plate 10. As the first through hole 21 and the second through hole 31 are formed in the first shielding membrane 20 and the second shielding membrane 30, respectively, the implant insert 3 according to the surgical site or the alveolar bone defect site, etc. The fastening position with respect to can be adjusted quickly and easily.

In addition, in the case of the periodontal tissue regeneration shielding membrane (1) according to an embodiment of the present disclosure, a plurality of fastening holes (11) in the core plate 10 can be continuously connected to each other in communication, the surgical site or alveolar bone defects The fastening position for the implant insert (3) according to the site can be fine-adjusted to enable more sophisticated yet effective bone oil regeneration procedure.

7 is a perspective view of the periodontal tissue regeneration shielding film after shaping in accordance with one embodiment of the disclosed contents.

When a fastening position for the implant insert 3 is selected according to a surgical site or an alveolar bone defect site among a plurality of fastening holes 11, as shown in FIG. 7, for example, a fastening hole at a corresponding position through a bending machine or the like. One or both sides of the periodontal tissue regeneration shielding membrane 1 according to an embodiment of the present disclosure with reference to (11) may be preformed to be curved downward in the longitudinal direction.

Hereinafter, referring to FIGS. 1 to 7, the bone induction regeneration procedure using the periodontal tissue regeneration shielding membrane 1 according to an embodiment will be described as follows:

First, before installing the periodontal tissue regeneration shielding membrane 1 according to one embodiment of the disclosed subject matter, an implant insert 3 consisting of the fixture 3a and the abutment 3b is inserted into the alveolar bone 5 and bone defects are present. Fill the bone graft material (7) to the site.

Subsequently, the periodontal tissue regeneration shielding film (1) formed in a three-dimensional shape in advance based on the fastening hole (11) selected according to the treatment site or the alveolar bone defect site or the like is bonded onto the implant insert (3). At this time, the fastening hole 11 is inserted onto the implant insert 3 and fastened with the fastening fastener 4 for fastening the barrier membrane, so that the periodontal tissue regeneration shield 1 is fixed to the upper side of the bone graft material 7. .

The gingiva 9 is then sutured after covering the gingiva 9 over the periodontal tissue regeneration shield 1 according to one embodiment of the disclosed subject matter. After the bone graft material 7 is fused in the interior of the periodontal tissue regeneration shield 1 according to an embodiment of the disclosure, the sutured gingiva 9 is opened and the periodontal tissue regeneration shielding membrane according to an embodiment of the disclosure (1) is removed from the bone defect and subsequent implantation is performed continuously.

Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the embodiments described herein and the configurations shown in the drawings are merely exemplary embodiments of the present invention, and represent all of the technical ideas of the present invention. It is to be understood that there may be various equivalents and variations in place of them at the time of the present application. Therefore, the exemplary embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the following claims rather than the detailed description, and the meaning and scope of the claims and their All changes or modifications derived from an equivalent concept should be construed as being included in the scope of the present invention.

The posted content is applicable to the field of osteoinductive regeneration of dental implants.

Claims

A core plate made of a metal plate capable of deforming shape by an external force and having a plurality of fastening holes formed therethrough so as to be fastened and fixed on an implant insert;

A first shielding membrane stacked on one side of the core plate; And

A second shielding membrane laminated on the other side of the core plate and integrally bonded to the first shielding membrane;

The fastening hole is a periodontal tissue regeneration shielding membrane that is formed in continuous connection with a plurality of connected to each other along the center line in the longitudinal or width direction of the core plate to enable fine adjustment of the fastening position.
The method according to claim 1,

The fastening hole is continuously formed in communication with each other in the form of a crisscross in the longitudinal and widthwise center line in the center of the core plate,

The core plate has a structure in which a concentric arc-shaped line is connected to each other by a radial connection line on both sides or at least one side along a longitudinal direction with respect to the fastening hole formed to be connected to each other in a cross shape. Shield for tissue regeneration.
The method according to claim 1,

Both surfaces of the core plate is fine patterning treatment, characterized in that the periodontal tissue regeneration shielding film.
The method according to claim 1,

The core plate is made of titanium material, and the first and second shield membrane is formed of polytetrafluoroethylene (PTFE) sheet, characterized in that the periodontal tissue regeneration shield.
The method according to claim 1,

The first and second shielding membrane is a membrane for regenerating periodontal tissue, characterized in that the bonding is integrally bonded by heat fusion or ultrasonic welding in a state surrounding the core plate on both sides.
The method according to claim 1,

The periodontal tissue regeneration shielding membrane is a periodontal tissue regeneration shielding membrane, characterized in that one side or both sides are formed to be curved downward in the longitudinal direction with respect to the selected fastening hole after the selection of the fastening hole.