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WO2020017924A1 - Implant dentaire pourvu d'un métal biodégradable - Google Patents

Implant dentaire pourvu d'un métal biodégradable Download PDF

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Publication number
WO2020017924A1
WO2020017924A1 PCT/KR2019/008949 KR2019008949W WO2020017924A1 WO 2020017924 A1 WO2020017924 A1 WO 2020017924A1 KR 2019008949 W KR2019008949 W KR 2019008949W WO 2020017924 A1 WO2020017924 A1 WO 2020017924A1
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WO
WIPO (PCT)
Prior art keywords
biodegradable
main
biodegradation
rear end
alveolar bone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2019/008949
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English (en)
Korean (ko)
Inventor
장희지
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Priority claimed from KR1020180100413A external-priority patent/KR102059964B1/ko
Priority claimed from KR1020190084423A external-priority patent/KR102120448B1/ko
Application filed by Individual filed Critical Individual
Publication of WO2020017924A1 publication Critical patent/WO2020017924A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools

Definitions

  • the present invention relates to a dental implant that is inserted into the alveolar bone, a biodegradable metal that can remove the risk of side effects by implanting a separate biodegradable material with the implant to improve the bone fusion rate of the implant and alveolar bone during implantation of the implant It relates to a dental implant having.
  • Dental implants refer to a series of procedures for implanting artificial teeth when natural teeth are lost.
  • the implant procedure is to fix the artificial tooth after planting a fixture, which is a tooth root made of titanium, 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.
  • 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 to the fixture, and the abutment is fixed to the fixture. It comprises an abutment screw and an artificial tooth coupled to the abutment.
  • 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.
  • 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.
  • the implantation 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.
  • the implant fixture according to the prior art has a lack of blood supply to the alveolar bone around the implanted screw thread and lacks the bone fusion area between the fixture and the alveolar bone, so that the bone fusion for the alveolar bone may elapse even after several months of fusion for healing. This may not happen in a dense manner.
  • the bone fusion area between the fixture and the alveolar bone is insufficient, or if bone fusion between the fixture and the alveolar bone is formed at the initial placement of the fixture, when the occlusion pressure is exerted 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 dropout of fixtures.
  • 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 failure.
  • the present invention is based on the 3D image data about the alveolar bone or teeth of the patient secured in advance, by using the metal 3D printer integrally manufactured by using a metal 3D printer, the fixture body, the mounting screw and the biodegradable material binding portion and the biodegradable portion formed thereon
  • Another object is to provide an implant with a biodegradable material that can significantly reduce the manufacturability and implant procedure.
  • the present invention is to minimize the damage to the alveolar bone of the patient as much as biodegradable substances such as magnesium or magnesium alloy provided on the outer peripheral surface of the fixture body of titanium or zirconium material is gradually dissolved in the bone calcium and phosphorus By bringing it around, it transforms it into a bone-like shape and tissue, and finally transforms it into a new bone-like tissue, increasing the probability of success after implantation, and increasing the contact area between fixture and alveolar bone. It is a further object to provide an implant with a biodegradable material that can enhance the binding force.
  • the implantation screw thread is provided on the outer peripheral surface is implanted in the alveolar bone; And an auxiliary biodegradation unit coupled to an outer circumferential surface of the body.
  • the auxiliary biodegradation unit is a front end biodegradation unit coupled to the front end of the body; And a biodegradable metal coupled to the rear end of the body and having at least one of a rear end biodegradation part which contacts the alveolar bone adjacent to the gum when inserting the body and prevents play of the rear end of the body.
  • the rear end biodegradable portion may have a diameter larger than the diameter of the body to protrude more than the body.
  • the rear end biodegradable portion may be formed to contact the alveolar bone defect site of the subject.
  • the body is provided with a receiving groove that is accommodated in the auxiliary biodegradable portion; the receiving groove, the first binding groove is formed in a belt shape surrounding a portion of the outer peripheral surface of the body; A second binding groove forming a band shape surrounding the entire outer circumferential surface of the body; A third binding groove having a circular or elliptical cross section in which a part of the body is embedded; And a fourth binding groove having a polygonal cross section in which a portion of the body is embedded.
  • the front end biodegradable portion is open at both ends or one side to be coupled to the front end of the body and the side is formed in a concentric or threaded corrugated tubular shape, the front end anatomical portion is screwed with the front end of the body in a crimping manner
  • the outer surface of the body which is fixed and coupled with the tip biodegradable portion may have a lattice structure.
  • the rear end biodegradable portion is open at both ends to be coupled to the rear end of the body and the side is formed in a concentric circular or threaded corrugated tubular shape, the rear end anatomical portion is screwed and fixed in a crimping manner, the The outer surface of the body coupled with the tip biodegradable portion may be a lattice structure.
  • At least one of the front end and the rear end biodegradable parts may have a constant inner diameter in the longitudinal direction, and an outer diameter of the front end or the rear end of the body corresponding to at least one of the front end and the rear end biodegradable parts having a constant inner diameter may have a constant outer diameter.
  • At least one of the front end and the rear end biodegradation unit may have an opening penetrating through the side thereof.
  • the lower end is opened to the front end side of the body and the receiving space embedded in the inner direction of the body; And a main biodegradation unit at least partially filled in the accommodation space, wherein at least one of the main biodegradation unit and the auxiliary biodegradation unit may include a biodegradable metal.
  • At least one of the tip of the body, the tip of the main biodegradation portion, and the tip of the tip biodegradation portion may be rounded to lift the mucosa separating the maxillary sinus of the patient to the maxillary sinus side.
  • the biodegradable metal includes pure magnesium or magnesium alloy
  • the magnesium alloy is strontium (Hydroxy Apatite), HA (Ag), niobium (yobium), yttrium, zirconium (zirconium)
  • strontium Hydroxy Apatite
  • HA Ag
  • niobium yobium
  • yttrium yttrium
  • zirconium zirconium
  • zinc and calcium can be mixed.
  • the main biodegradation unit and the auxiliary biodegradation unit may be formed in the receiving space by a die casting method, or at least one of the body, the main biodegradation unit, and the auxiliary biodegradation unit may be integrally formed by using a metal 3D printer or a cold spray method. It can be provided with a biodegradable metal.
  • the body may have a body through-hole formed in the side to communicate the inside and the outside.
  • the main biodegradable part may include a main biodegradable part recessed part in which the biodegradable metal is absent; And at least a main biodegradation part depression part of the depression extension part formed by expanding the main biodegradation part depression part, and the main biodegradation part depression part may be disposed to face the body through hole.
  • the main biodegradation unit the main biodegradation unit expansion portion for filling the body through hole;
  • At least a main biodegradable part extension part of the main biodegradable part extension part and a main biodegradable part recessed part which is recessed in an extended part or protruding part of the main biodegradable part protrusion part may be provided.
  • the cross-sectional area of the main biodegradable portion may gradually increase toward the tip direction.
  • the main biodegradable portion may be in contact with a portion of the ceiling of the receiving space of the rear end side of the receiving space.
  • the tip biodegradation portion may include a tip through hole penetrating through a side surface thereof, and the tip through hole may communicate with at least the body through hole of the body through hole and the main biodegradation portion recessed portion.
  • the body is formed so as to gradually reduce the diameter toward the insertion direction into the alveolar bone, the length of the thread extending from the body gradually increases so that the distance from the center of the body to the edge of the thread Can be kept constant.
  • the present invention is filled with magnesium or magnesium alloy (collectively referred to as 'biodegradable portion') having a biodegradable feature that is decomposed in the human body on the outer circumferential surface of the body provided with titanium material, while gradually decomposing from the body placed in the human body New bones are created in place, and the alveolar bone can be firmly connected.
  • 'biodegradable portion' magnesium or magnesium alloy
  • the present invention may increase the blood flow to the alveolar bone around the implant to increase the amount of bone and maintain the alveolar bone in a healthy state to shorten the implant treatment period, as well as to further enhance the bone fusion between the alveolar bone and the body. .
  • 1 is a cross-sectional view showing an embodiment of the present invention placed in the alveolar bone.
  • Figure 2 is a perspective view showing the body and the main biodegradable portion of the present invention.
  • Figure 3 is a cross-sectional view showing an embodiment of the body and the main biodegradable portion of the present invention.
  • Figure 4 is a cross-sectional view showing an embodiment of the body of the present invention.
  • FIG. 5 is a cross-sectional view of various embodiments of the receiving space and the main biodegradable portion of the present invention.
  • Figure 6 is a cross-sectional view of various embodiments of the body and the through hole of the present invention.
  • FIG. 7 is a cross-sectional view showing a connection between the body and the through hole of the present invention.
  • FIG. 8 is a perspective view showing a connection between the body and the through hole of the present invention.
  • Figure 9 is a perspective view showing one embodiment of the body and the thread of the present invention.
  • Figure 10 is a cross-sectional view of an embodiment of the body and the through hole of the present invention.
  • Figure 11 is a cross-sectional view of an embodiment of the body and the through hole of the present invention.
  • FIG. 12 is a cross-sectional view showing another embodiment of the body of the present invention implanted in the alveolar bone.
  • Figure 13 is a perspective view showing another embodiment of the body of the present invention.
  • 16 is a cross-sectional view showing an embodiment in which the body of the present invention is placed in the maxillary sinus.
  • 17 is a side view showing various embodiments of the auxiliary biodegradable portion of the present invention.
  • 18 and 19 are side views showing another embodiment of the auxiliary biodegradable portion of the present invention.
  • 20 and 21 is a side view showing another embodiment of the auxiliary biodegradable portion of the present invention.
  • Figure 22 is a side view showing an embodiment of combining the second biodegradable portion and the body of the present invention.
  • Figure 23 is a side view showing various embodiments of the second biodegradable portion of the present invention.
  • Figure 24 is a side view showing another embodiment of the body and the thread of the present invention.
  • 25 is a partial cross-sectional view showing an embodiment in which the body and the second biodegradable portion of the present invention are combined and another embodiment of the main biodegradable portion.
  • first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.
  • the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.
  • Such components may be configured by combining two or more components into one component, or by dividing one or more components into two or more components as necessary when implemented in an actual application.
  • the same reference numerals are given to the same or similar components throughout the drawings, and detailed description of the components having the same reference numerals may be omitted by replacing the descriptions of the aforementioned components.
  • the present invention encompasses all possible combinations of the embodiments indicated herein.
  • the various embodiments of the present invention are different but not mutually exclusive.
  • One embodiment of a particular shape, structure, function, and characteristic described herein may be implemented in other embodiments.
  • the components mentioned in the first and second embodiments may perform all the functions of the first and second embodiments.
  • the implants according to the invention can be used in dental and general surgical implants.
  • Dental implants can be applied to both internal, external, and integral connection schemes.
  • the fixture (body) can be applied to both a straight shape, a root shape (wedge shape), or a jar shape.
  • a dental implant having a biodegradable metal may include a body 10 and a main biodegradable part 100.
  • Body 10 is formed to extend to a predetermined length, it may be implanted in the alveolar bone 4 after cutting the gum 2 of the patient.
  • the thread 11 spirals outwardly of the body 10 to the outer side of the body 10 to increase the coupling force between the body 10 and the alveolar bone 4. It may extend along the side.
  • Body 10 may be screwed with the abutment (abutment). May be combined with the abutment artificial tooth 6.
  • Abutment It may be a custom abutment, a customized abutment that is tailored to the shape of the gums and teeth of each patient.
  • a portion of the body 10 to be implanted in the alveolar bone 4 will be referred to as a front end, and a part coupled to the abutment will be referred to as a rear end.
  • a lower end of the body 10 may be open and an accommodation space S may be recessed in the inner direction of the body 10.
  • the accommodation space S may preferably have a cylindrical shape or a polygonal column.
  • the accommodation space S may have a shape in which the cross-sectional area becomes narrower or wider in the tip direction in addition to the column shape.
  • the accommodation space S may be formed to be stepped in the vertical direction.
  • the accommodation space S may include a protruding accommodation space S0 protruding in a rearward direction.
  • the body 10 may include at least one of an inner surface uneven portion S1 and a ceiling surface uneven portion S2 on an inner surface of the accommodation space S.
  • the inner surface concave-convex portion S1 and the ceiling surface concave-convex portion S2 may have various shapes to widen the inner surface area of the accommodation space S.
  • the inner surface concave-convex portion S1 may be formed in a specific shape such as a female screw thread.
  • the inner surface uneven portion S1 may be disposed on an inner wall of the accommodation space S, and the ceiling surface uneven portion S2 may be disposed at a ceiling portion of the accommodation space S.
  • the inner surface concave-convex portion S1 and the ceiling surface concave-convex portion S2 may increase the area of the accommodation space S, thereby increasing the bone fusion area. Thereby, the coupling force of the body 10 and the alveolar bone 4 can be further improved.
  • the body 10 may have an edge concave-convex portion S3 disposed at its tip.
  • Edge concave-convex portion (S3) may have a variety of shapes such as triangular pattern, wave pattern, sawtooth pattern around the lower end of the body (10).
  • Edge concave-convex portion S3 may have a self-tapping function, which is a function of cutting the alveolar bone 4 when the body 10 is placed.
  • the main biodegradable part 100 may be disposed in the accommodation space S of the body 10.
  • the main biodegradable part 100 may be integrated with the accommodation space S, may be part of the accommodation space S, or may protrude to the outside of the accommodation space S. It can vary.
  • the main biodegradable part 100 may be started at a part of the ceiling of the accommodation space S, as shown in FIG.
  • the alveolar bone fragments or blood is filled between the body 10 and the main biodegradable part 100 to improve the area of contact with the main biodegradable part 100.
  • the main biodegradable part 100 may be formed in a conical shape or a spiral shape whose cross sectional area is gradually reduced toward the front end of the body 10. Such a conical shape is formed while the main biodegradable portion 100 has an empty space between the rear end directions of the accommodation spaces S and toward the tip direction (see FIG. 3), or is formed integrally with the accommodation space S. (See FIG. 5 (b)).
  • the main biodegradable portion 100 may gradually increase in cross-sectional area toward the tip. This may widen the area where the main biodegradable portion 100 in contact with the alveolar bone in the tip direction, and may provide an effect of strengthening the mechanical strength of the body 10 after the main biodegradable portion 100 is extinguished.
  • An example of a gradual increase in the cross-sectional area of the main biodegradable portion 100 is shown in FIGS. 5C and 5D, but is not limited thereto.
  • the protruding accommodation space S0 of FIG. 5D may be a portion that is screwed with the main biodegradable part 100. That is, the protruding accommodation space S0 may be formed of a female screw, and the protruding portion (the portion corresponding to the protruding accommodation space S0) of the main biodegradable portion 100 may be formed of a male screw.
  • the tip portion of the main biodegradable portion 100 may be flat as shown in FIG. 5, or rounded like a semicircle or an ellipse. This may be advantageous for lifting the maxillary sinus mucosa described below.
  • the tip portion of the main biodegradable portion 100 is a groove or irregularities are generated, it is possible to widen the cross-sectional area with the alveolar bone.
  • the main biodegradable part 100 may be biodegraded in the oral cavity over time.
  • the main biodegradable part 100 may be biodegraded by fusion with the oral cavity, in particular, the alveolar bone 4.
  • the main biodegradable part 100 may be provided with a biodegradable metal or be composed of a biodegradable metal.
  • Biodegradable metals mean metals that have a property of melting and extinguishing in vivo after a certain period of time, as opposed to common metallic 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, strontium, silver (Ag), zirconium, niobium, and gadolinium. have.
  • the main biodegradable part 100 is preferably a magnesium or magnesium alloy of the biodegradable metal.
  • the magnesium alloy may be a metal material in which at least one of strontium, silver, Ag, niobium, yttrium, zirconium, hydroxy apatite, zinc, and calcium is mixed with magnesium.
  • the main biodegradable part 100 is gradually melted in the receiving space (S) of the body 10, bringing calcium and phosphorus, which are the main components of the bone, around to generate bone or change it into a bone-like shape and tissue and receive the receiving space ( Inner and outer sides of the S) and the changed tissue can be contacted to improve the bonding force of the body (10).
  • alveolar bone was well formed and seemed to be an important factor in increasing bone growth rate. Therefore, it is preferable that the remaining alveolar bone is in contact with the main biodegradable part 100 and the remaining alveolar bone is disposed at the defect site between the alveolar bone and the implant according to the present embodiment.
  • the body 10 may include a plurality of body through-holes 12 communicating the outside of the body 10 and the accommodation space S.
  • the plurality of body through holes 12 may be spaced apart at regular intervals, or may be arranged in an irregular pattern.
  • the main body through hole 12 may not only be disposed inside the main biodegradable part 100 (see FIG. 6A), but may be extended to the adjacent main biodegradable part 100. That is, the main biodegradable part 100 may be provided with the main biodegradable part depressed part 102 that is recessed around the body through-hole 12 and there is no biodegradable metal (see FIG. 6B).
  • the main biodegradable recessed portion 102 may be formed in various shapes to increase its surface area. For example, it may be provided with a depression extension 104 (see Fig. 6 (c)) to further recess the main biodegradable portion (100).
  • Blood may be supplied to the accommodation space S through the main body through hole 12, the main biodegradation part depression 102, and / or the depression extension part 104 in which the main biodegradation part 100 is not disposed. . This may shorten the time that the new bone is filled in the receiving space (S) and the through-hole 12 in response to the main biodegradable portion (100).
  • New bone formed in the body through-hole 12 or accommodation space (S) can be connected to the outer alveolar bone 4 of the body 10 to improve the coupling force of the body 10 and the alveolar bone (4).
  • the main biodegradable part 100 may include a main biodegradable part extended part 106 filling the body through hole 12.
  • the main biodegradable portion extension 106 may include a main biodegradable portion protrusion 107 protruding outside the body 010.
  • the main biodegradable part 100 may include a main biodegradable part recessed part 108 recessed inwardly in an extended or protruding part.
  • the main biodegradation unit depression 102 and / or the depression expansion unit 104 of the main biodegradation unit 100 may be used when a new bone is formed in the urgent receiving space (S), and the main biodegradation unit expansion unit ( 106, the main biodegradable protrusion 107, and / or the main biodegradable recessed recess 108 may be used when there is a margin in time and allows the new bone to be densely formed.
  • the main biodegradable part 100 may be integrally formed in the receiving space S of the body 10 by a die casting method.
  • the receiving space S may be molded, and then the biodegradable metal constituting the main biodegradable part 100 may be melted and filled in the receiving space S. have.
  • the main biodegradable part 100 and the body 10 may be manufactured using a metal 3D printing method, a cold spray method, or the like.
  • the body through-hole 12 communicates from the outer circumferential surface of the body 10 to the receiving space S, but has a predetermined angle based on a virtual tangent L passing through the outer surface of the body 10. (a) It may be formed to make an inclination. The angle formed by the body through hole 12 may be set to an angle corresponding to the rotation direction of the body 10 when the body 10 is placed in the alveolar bone 4.
  • the predetermined angle (a) is preferably set to be an acute angle range based on the rotation direction of the body (10). This is to reduce the time that the residue of the alveolar bone (4) generated during the placement of the body 10 passes through the body through hole 12 into the accommodation space (S) to create a new bone in the accommodation space (S) Can be.
  • the thread 11 may include a plurality of threaded holes 11-1 passing through the thread 11 along the thread 11.
  • the threaded holes 11-1 may have a pattern arranged at regular intervals and an irregular pattern. Due to the threaded holes 11-1, the alveolar bones 4 between the threads 11 may communicate with each other. As the new bone is filled in the threaded hole 11-1, the coupling force between the body 10 and the alveolar bone 4 is improved.
  • the thread 11 may have a thread cutting portion 11-2 for cutting off a portion of the extended thread 11.
  • the thread cutting portion 11-2 has a predetermined shape disposed from an edge of the thread to an adjacent portion of the body 10, and may preferably be cut in a triangular or trapezoidal shape. Thread cutting portion (11-2) may be spaced apart a plurality of along the extending length of the thread (11).
  • the threaded through hole (11-3) for communicating the threaded cutting portion (11-2) and the receiving space (S) in the body 10 may be formed through.
  • the threaded through hole 11-3 may penetrate the body 10 while maintaining a predetermined angle of inclination like the body through hole 12. The effect is corresponding to the body through-hole 12, so the detailed statement is omitted.
  • the coupling force between the body 10 and the alveolar bone 4 is improved due to the configuration of the body through hole 12, the thread hole 11-1, the thread cutting part 11-2, and the thread through hole 11-3 of the present invention. And bone fusion of the main biodegradable portion 100 and the alveolar bone 4 can be progressed more quickly. That is, the newly generated bone (alveolar bone) forms a structure such as a mesh shape between the body 10 and the receiving space (S), the coupling force and the supporting force of the body 10 and the alveolar bone 4 can be very high.
  • the alveolar bone (4) is removed when the body 10 is placed in the body 10 and the receiving space (S) by being fused with the newly generated bone is reduced the occurrence of side effects, inflammation, etc. .
  • the diameter of the body 10 of the present invention can be varied, due to the lack of alveolar bone (4) that the bone 10 is to be implanted by the bone is absorbed by inflammation, etc., or due to anatomical structures such as the maxillary sinus, lower extremity nerves
  • the inside may be filled with the main biodegradable part 100 to improve the mechanical strength of the implant.
  • the essential specification of the body 10 to be implanted in the alveolar bone 4 as described above should be adopted to a predetermined length or less to a certain thickness, when the body 10 of the present invention is implanted, and the alveolar bone 4 Since the bone fusion area can be maximized, a relatively short and small diameter body 10 may also be adopted and placed in the alveolar bone 4.
  • a relatively short and small diameter body 10 may also be adopted and placed in the alveolar bone 4.
  • the main biodegradation unit 100 provided in the receiving space (S) can further promote the creation of new bone.
  • the body 10 may include an auxiliary biodegradable part 200 coupled to an outer circumferential surface thereof.
  • the outer circumferential surface of the body 10 may be a structure that increases the surface area, such as irregularities, meshes, grid structure, etc.
  • the auxiliary biodegradable portion 200 may also be made of a corresponding structure. Due to this structure, the bonding force between the auxiliary biodegradable part 200 and the body 10 may be further improved.
  • auxiliary biodegradation unit 200 is coupled to the outer circumferential surface of the body 10, when the body 10 is implanted in the alveolar bone 4, the auxiliary disintegrating unit 200 is implanted in contact with the alveolar bone 4.
  • the main component of the part 200 can be quickly absorbed into the alveolar bone 4.
  • the auxiliary biodegradable part 200 may be coupled to the thread 11 as well as the body 10.
  • the auxiliary biodegradation unit 200 may also be biodegradable over time in the oral cavity, and may be composed of a material that is biodegradable with time in the human tissue, in particular, a biodegradable metal, or may include such a material. That is, the auxiliary biodegradation unit 200 may include a biodegradable metal.
  • the biodegradable metal of the auxiliary biodegradable unit 200 may correspond to the biodegradable metal of the main biodegradable unit 100 described above, and a detailed description thereof will be omitted.
  • Auxiliary biodegradation unit 200 is to promote the blood flow of the new bone generated in the alveolar bone 4 around the body 10, and at the same time to be biodegradable in the oral cavity to expand the coupling force of the body 10 and the alveolar bone (4) It is possible to increase the holding strength of the body (10).
  • An outer circumferential surface of the body 10 may further include a receiving groove 13 configured to be coupled to the auxiliary biodegradable portion 200.
  • the receiving groove 13 is formed on the outer circumferential surface and the thread 11 of the body 10, and may have a shape impregnated like a groove or penetrate the body 10.
  • the receiving groove 13 may be formed by drilling, but is not limited to the above method, and when the body 10 is molded by a casting process, the receiving groove 13 may be formed within the limit of molding removal. have.
  • Auxiliary biodegradable portion 200 may be coupled to the body 10 or the thread 11 in a band shape.
  • the receiving groove 13 has a first binding groove 13-1 formed in a band shape surrounding a part of the outer circumferential surface of the body 10 and a second binding groove 13 forming a band shape covering the entire outer circumferential surface of the body 10. -2) and at least one of the third binding grooves 13-3 and 13-5 having a circular or elliptical cross section in which a part of the body 10 is embedded, and the fourth binding groove 13-4 having a polygonal shape. It may include.
  • the shape of the accommodating groove 13 is not limited to the above-described shape, and can be changed according to the user's easy design change.
  • the receiving groove 13 may be formed in the thread 11, it may be formed in the corresponding portion of the thread 11 adjacent to the body 10. That is, when the body 10 is implanted in the alveolar bone 4 in the state in which the auxiliary biodegradation unit 200 is coupled to the receiving groove 13, the body 10 and the thread 11 and the alveolar bone at the time of insertion of the body 10. A predetermined space is generated between (4), the new bone is generated in the alveolar bone (4) in this space can prevent the play between the body 10 and the alveolar bone (4). In addition, it provides an effect that can prevent the occurrence of inflammation or side effects in the area.
  • the receiving groove 13 may be formed continuously or only along the outer circumferential surface of the body 10 and the edge of the thread 11 and the valley 11a between the thread 11 and the thread 11. .
  • the receiving groove 13 is irregularly formed at the edge of the thread, the area in contact with the alveolar bone 4 is increased to improve the coupling force between the alveolar bone 4 and the thread.
  • the accommodation groove 13 may have various shapes.
  • Receiving groove 13 may be provided with a first binding groove (13a) of Figure 15 (a).
  • the first binding groove 13a is formed as a groove such that a part of the thread 11 and the valley 11a of the thread is cut, and the auxiliary biodegradable part 200 may be filled.
  • the accommodating groove 13 may include the second fastening groove 13b of FIG. 15 (b).
  • the second binding groove 13b may further secure a coupling force of the body 10 by increasing a contact area with a bone formed by further forming a groove inside.
  • the accommodating groove 13 may include the third fastening groove 13c of FIG. 15C.
  • the third binding groove 13c has a deeper depth to be embedded, and when the bone is newly generated in the corresponding area, the third binding groove 13c firmly supports the body 10, and the alveolar bone 4 into which the body 10 is inserted is provided. This can prevent them from being easily withdrawn.
  • the body 10 and the auxiliary biodegradation unit 200 may be coupled by a coupling method such as screwing, interference fitting, pressing, welding, and the like, and wet the surface of the body 10 to the auxiliary biodegradation unit 200 made of liquid. It may be manufactured by a dipping technique.
  • a method of depositing the auxiliary biodegradable part 200 on the body 10 may be used, and sputtering deposition may be used in this manner. This method can also be applied to the binding method of the binding groove and the auxiliary biodegradable portion 200.
  • the method of inserting or coupling the auxiliary biodegradable part 200 into the accommodation groove 13 may be performed in various ways.
  • the auxiliary biodegradable part 200 corresponding to the appearance of the binding groove 10 may be pressed or TIG welded or lasered. It can be used in any one of welding, electrical resistance SPOT welding, MIG welding, CMT process welding, FSW welding, metal 3D printing, and cold spray. When the welding process proceeds, the manufacturing process and time of the body 10 can be shortened.
  • the auxiliary biodegradable part 200 By discharging the auxiliary biodegradable part 200 in a powder form and binding to the body 10 made of titanium, the receiving groove 13 and the auxiliary biodegradable part 200 which are different materials can be fused. have.
  • auxiliary biodegradation unit 200 may bring phosphorus or calcium, which is advantageous for the generation of new bones, to help generate new bones so that a large amount of strong bones may be generated. As a result, the bone attachment site that is wider by the area where the auxiliary biodegradation unit 200 is decomposed and disappeared may be generated.
  • At least one or a combination of the main biodegradable part 100, the auxiliary biodegradable part 200, and the body 10 may be manufactured using a metal 3D printing method or a cold spray.
  • the human face bones have a maxillary sinus (8) shaped like a few empty caves.
  • the alveolar bone 4 is formed at the lower portion of the maxillary sinus 8, and the thickness of the alveolar bone 4 has a different thickness according to the person.
  • the thickness of the alveolar bone 4 should be at least about 10 mm to 10 mm for the normal procedure of implantation (that is, the normal placement of the alveolar bone 4 of the body 10), the thickness of the alveolar bone 4 may vary depending on the patient.
  • thin maxillary sinus elevation should be performed.
  • maxillary sinus elevation may cause side effects such as sinusitis, an operation time, an extension of the healing period, and an increase in additional surgery costs due to maxillary sinus rupture.
  • At least a portion of the receiving groove 13 formed on the outer circumferential surface of the body 10 may be implanted in the maxilla such that the body 10 may penetrate into the site of the maxillary sinus 8 of the subject. That is, the auxiliary biodegradable part 200 that is bound to the receiving groove 13 disposed in the maxillary sinus may be decomposed in the maxillary sinus 8 of the patient described above.
  • the portion of the maxillary sinus adjacent to the body 10 disposed while lifting the mucosa of the maxillary sinus can be interpreted as a kind of alveolar bone defect.
  • the receiving groove 13 is formed in the portion of the outer circumferential surface of the body 10 to penetrate into the maxillary sinus 8 of the patient, thereby assisting biodegradation.
  • the part 200 may be disassembled inside the maxillary sinus 8.
  • Auxiliary biodegradation unit 200 disposed in the maxillary sinus may allow the new bone to proliferate the defective portion.
  • the bone fragments of the alveolar bone 4 which are cut in the placement process and disposed inside the maxillary sinus can promote the formation of new bone 4a.
  • the auxiliary biodegradation unit 200 is coupled to the front end of the body 10 (one end of the body 10 inserted into the alveolar bone 4) and placed in contact with the alveolar bone 4. At least one of the front end biodegradation unit and the rear end of the body 10 is coupled to the rear end (the other end of the body 10 of the gum or alveolar bone 4).
  • the first biodegradable portion 210 which is a kind of the tip biodegradable portion of the auxiliary biodegradable portion 200, may be implanted through a hole drilled in the alveolar bone 4 through the incision gum 2 of the patient.
  • the first biodegradable portion 210 may be lifted to the maxillary sinus 8 side of the mucosa 31 provided to distinguish the maxillary sinus 8 while being placed.
  • the lower end of the first biodegradable part 210 (upper part, upper part in the drawing) is flat or has a predetermined radius of curvature so as not to damage the mucosa 30 of the patient when the body 10 is inserted. It can be formed round.
  • the first biodegradable portion 210 is coupled to the front end of the body 10 may be combined by pressing, welding, metal 3D printing, cold spray, screwing, interference fit, etc., the auxiliary biodegradable portion 200 described above.
  • One of the coupling method of the body and the body 10 can be selected.
  • the height of the first biodegradable portion 210 may be adjusted according to the thickness of the alveolar bone 4 of the patient, and the first biodegradable portion 210 may have a first biodegradable portion 210 having various heights.
  • the secondary biodegradable unit 200 may be concentrated at the tip of the body 10 or concentrated at a vulnerable portion, so that the amount of the secondary biodegradable unit 200 may be adjusted differently according to the condition of the patient.
  • the first biodegradable portion 210 may have various cross sections.
  • One surface that is in contact with the alveolar bone 4 has a threaded shape, thereby smoothly accommodating the remaining pieces of the alveolar bone 4 during the placement of the body 10 to help bone formation.
  • the second biodegradable part 220 which is a rear end biodegradable part of the auxiliary biodegradable part 200, may be disposed at a site in which the alveolar bone defect is severe, so that the new bone may be well proliferated in the alveolar bone defect. As a result, the second biodegradable part 220 may prevent the play of the rear end of the body 10.
  • the auxiliary biodegradable part 200 may include a third biodegradable part 230 wound along the valley 11a of the thread 11 of the body 10.
  • the third biodegradable portion 230 is made of a material that is biodegradable in the oral cavity, in particular may be made of a magnesium alloy including magnesium.
  • the third biodegradable portion 230 may be formed in plural with a small diameter, and may be pre-fabricated like a spring coil and inserted into the body 10 before the procedure.
  • the front end biodegradation unit of the auxiliary biodegradation unit 200 may be mounted to the front end of the body 10, and may include a fourth biodegradation unit 240 having a corrugated pipe shape at a side surface thereof.
  • the fourth biodegradable part 240 may have a cup biodegradable part having an open shape at one side thereof so as to be inserted into the front end of the corrugated tubular shape and to be inserted into the front end of the body 10.
  • the fourth biodegradable part 240 may have an elasticity in the shape of a corrugated pipe to facilitate length adjustment.
  • the other side of the fourth biodegradable part 240 that is not opened may be formed in a semicircle shape, an elliptic shape, or a flat shape drawing a predetermined radius of curvature.
  • the front ends of the fourth biodegradable part 240 and the body 10 may be screwed together. That is, the inside of the fourth biodegradable part 240 may have a female screw shape, and the tip of the body 10 corresponding thereto may have a male screw shape.
  • the corrugated pipe shape or shape outside the fourth biodegradable portion 240 may be concentric or threaded.
  • the operator may determine whether to mount the fourth biodegradable part 240 according to the condition of the patient before the procedure.
  • the combination of the fourth biodegradable part 240 and the body 10 may use a metal 3D printing, cold spray, pressing, rolling, extrusion method.
  • the thread 11 is not formed at a portion of the front end of the body 10, and the interference fit of the fourth biodegradable part 240 may be performed.
  • the bonding method of the fourth biodegradable part 240 is not limited to the above method.
  • the diameter formed by the fourth biodegradable part 240 is preferably formed to be smaller than the diameter of a hole previously formed in the alveolar bone 4 when the body 10 is inserted into the alveolar bone 4. As the 240 penetrates into the maxillary sinus 8 side, the mucous membrane may be pushed up without damage to provide a space in which new bone may be generated.
  • the fourth biodegradable part 240 may include a tube biodegradable part having an open top and bottom sides so that the front end of the body 10 is exposed. At this time, the front end of the body 10 may be screwed with the fourth biodegradable portion 240.
  • various coupling methods mentioned above may be used in addition to the screw coupling.
  • a portion of the tip of the body 10 coupled with the fourth biodegradable part 240 has a diameter such that a diameter when the fourth biodegradable part 240 is coupled to the body 10 and a diameter formed by the body 10 are the same. It may be tapered by T ° to be small.
  • the tip portion of the body 10 to which the fourth biodegradable part 240 is coupled is a male screw, and the rib diameter and the outer diameter are the same in the longitudinal direction, It is preferable that the inside diameter and the valley diameter of the fourth biodegradable portion 240 as the female screw are the same in the longitudinal direction.
  • the outer diameter of the tip portion of the body 10 and the inner diameter of the fourth biodegradable portion 240 are preferably the same in the longitudinal direction. This may allow the body 10 and the fourth biodegradable part 240 to be generally screwed or tightly fitted.
  • the outer diameter of the body 10 and the inner diameter of the fourth biodegradable part 240 substantially correspond to each other, and in the case of forcible fitting, the outer diameter of the body 10 is the inner diameter of the fourth biodegradable part 240. Larger is preferred.
  • internal diameters, outer diameters, and diameters refer to diameters other than threads or screw bones, except where specifically noted or to be interpreted to include threads or screw bones.
  • the outside of the fourth biodegradable part 240 may be the same as the tapered angle of the outside of the body 10 or may be straight.
  • the second biodegradable part 220 may be coupled to the rear end of the body 10.
  • the second biodegradable portion 220 may also have a ring shape in which the vertical direction is open, and a wrinkle may be formed on the outer surface.
  • the wrinkles formed on the outer surface of the second biodegradable portion 220 may be concentric or spiral.
  • the outer surface of the second biodegradable portion 220 may have a thread shape corresponding to the central portion of the body 10.
  • the second biodegradable unit 220 may be screwed with the body 10. Coupling of the second biodegradable unit 220 and the body 10 may be used in the above-described various coupling methods such as interference fit in addition to screw coupling.
  • the diameter of the rear end portion of the body 10 may have a diameter smaller than the diameter of the body 10 so that the curved surface does not occur at the coupling portion when the second biodegradable portion 220 and the body 10 are coupled.
  • the outer diameter of the rear end of the body 10 in the longitudinal direction may be constant and the inner diameter of the second biodegradable portion 220 may be constant.
  • the body 10 and the second biodegradable part 220 may be coupled by a general screw coupling or may be easily fitted.
  • the outer diameter of the rear end of the body 10 is preferably substantially the same as or larger than the inner diameter of the second biodegradable portion 220.
  • the outer diameter of the second biodegradable portion 220 may be gradually increased or constant in the rear end direction to correspond to the central portion of the body 10.
  • the outermost part of the alveolar bone 4 can be easily lost.
  • the rear end of the body 10 may be disposed in the alveolar bone with many defects.
  • a predetermined gap may be formed between the rear end of the implanted body 10 and the alveolar bone defect site. Foreign substances or foods or the like may be caught in the spaces along the predetermined intervals, which may cause side effects such as inflammation.
  • the second biodegradable portion 220 may fill the defective portion in its shape, and may cause a rapid osseointegration by its function, thereby preventing or reducing gastric side effects.
  • the diameter of the second biodegradable portion 220 may be larger than the diameter formed by the rear end of the body 10. When the diameter of the second biodegradable portion 220 is larger than the diameter of the body 10, the gap between the rear end of the body 10 and the alveolar bone 4 may not be generated, or may be suppressed or reduced.
  • the second biodegradable portion 220 may be coupled to the existing body 10 so that a curved surface may be formed in the appearance of the implant. That is, the second biodegradable portion 220 may be coupled to protrude on the outer circumferential surface of the body 10. The second biodegradable portion 220 protruding from the body 10 may fill the defective portion of the alveolar bone adjacent to the gum, thereby preventing or reducing the clearance between the defective portion and the body 10, and generating bone at the defective portion. Can be further promoted.
  • the shape of the second biodegradable portion 220 may have a shape corresponding to the open shape of the alveolar bone 4, to prevent the missing alveolar bone 4 from being exposed to the outside, and have a shape for rapid bone fusion action. Can be.
  • the second biodegradable portion 220 is preferably formed to have a shape to fill the alveolar bone defect site of the subject.
  • the lower end of the second biodegradable part 220 may have various shapes such as forming an oblique line, a hemispherical shape, a square shape, an inverted triangle shape, and the like. That is, it is preferable to form the second biodegradable portion 220 so as to contact the alveolar bone defect site of the subject, so that bone formation is well maintained and finally maintain the mechanical strength of the implant.
  • the diameter of the body 10 is formed to have a diameter in which the cross-sectional area gradually decreases toward the insertion direction into the alveolar bone 4, and the thread 11 is opposite from the rear end of the body 10. It can be formed to gradually increase the length of the thread (11). That is, it is assumed that the virtual vertical line crossing the center of the body 10 is 'L', and the distance D1 between the rear end of the body 10 and the end of the adjacent thread 11 and the virtual vertical line L and the body 10. The distance D2 between the end of the thread 11 and the end of the adjacent thread 11 and the virtual vertical line L may correspond to the same distance.
  • the threaded hole 11-1 may be formed to have a predetermined pattern or an irregular pattern in the screw thread 11 to improve the coupling force of the body 10.
  • the main biodegradable part 100 may be accommodated in the receiving space S of the body 10, and the second biodegradable part 220 may be coupled to the upper end of the body 10.
  • the upper end of the body 10 is preferably provided with a separate fixing rod 16 that can be screwed with the second biodegradable portion 220, the outer surface of the fixing rod 16, the screw thread (16-1) ) May be formed.
  • the main biodegradable part 100 received at the tip of the body 10 may include a support biodegradable part 110 protruding from the tip of the body 10.
  • the insertion hole of the body is formed in the alveolar bone 4 for the placement of the body 10. At this time, when the depth of the insertion hole is formed deeper, the support biodegradation unit 110 maintains the state in contact with the alveolar bone 4 The creation can proceed smoothly.
  • Figure 26 is a view of another embodiment of an implant according to the present invention. See FIGS. 1 to 25.
  • the implant according to the present embodiment includes a body 10 and may include at least one of the main biodegradation unit 100, the front end biodegradation unit 240, and the rear end biodegradation unit 220. .
  • the main biodegradation unit 100 the front end biodegradation unit 240
  • the rear end biodegradation unit 220 the implant according to the present embodiment.
  • the body 10 may be provided with a thread 11 on the outside.
  • the front end biodegradable part 240 may be coupled to the front end of the body 10 which is placed in the alveolar bone, and the rear end biodegradable part 220 may be coupled to the rear end of the body 10.
  • the front end biodegradation unit 240 and the rear end biodegradation unit 220 may correspond to the fourth biodegradation unit 240 and the second biodegradation unit 220 described above.
  • the front end biodegradable part 240 and / or the rear end biodegradable part 220 may be formed in a tubular shape having a screw thread or a concentric shape.
  • the front end biodegradation unit 240 and / or the rear end biodegradation unit 220 may have elasticity in the shape of a corrugated tubular side.
  • the front end biodegradable part 240 or the rear end biodegradable part 220 may be screwed to the front end or the rear end of the body 10, respectively, and then fixed to the body 10 by a compression method.
  • At least one of the front end biodegradation unit 240 and the rear end biodegradation unit 220 may have an opening penetrating the side surface thereof.
  • the rear end biodegradable unit 220 may include a rear end through hole 22 penetrating the side surface thereof.
  • the tip biodegradable part 240 may include a tip through hole 21 penetrating the side surface thereof.
  • Each of the front end through hole 21 and the rear end through hole 22 may have a circular, elliptical, rectangular, and band shape, and a plurality of the front end or rear end through holes 21 and 22 are gathered, and the front end and the rear end biodegradation.
  • a lattice structure or a mesh structure may be formed on the outer circumferential surface of the parts 240 and 220.
  • the front through hole 21 and the rear through hole 22 may allow the front end biodegradation unit 240 and the rear end biodegradation unit 220 to contact the tissue of the subject such as alveolar bone or blood more.
  • the tip through hole 21 may communicate with the body through hole 12 of the body 10 described above, and may also communicate with the depression 102 of the main biodegradable part 100.
  • At least one of the tip of the body 10, the peak of the main biodegradable portion 100, and the peak of the tip biodegradable portion 240 is preferably rounded to lift the mucosa separating the maxillary sinus of the patient to the maxillary sinus side.
  • the peak means a portion disposed in the tip direction of the body 10.
  • main biodegradation unit 200 auxiliary biodegradation unit
  • first biodegradable portion 220 second biodegradable portion

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Dental Prosthetics (AREA)

Abstract

La présente invention concerne un implant dentaire qui est inséré dans un os alvéolaire et un implant dentaire qui est pourvu d'un métal biodégradable et permet d'éliminer le risque d'effets secondaires par l'implantation d'un matériau biodégradable séparé avec l'implant, lorsque l'implant est implanté, afin d'augmenter la vitesse d'ostéointégration de l'implant et de l'os alvéolaire.
PCT/KR2019/008949 2018-07-19 2019-07-19 Implant dentaire pourvu d'un métal biodégradable Ceased WO2020017924A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR20180084211 2018-07-19
KR10-2018-0084211 2018-07-19
KR1020180100413A KR102059964B1 (ko) 2018-07-19 2018-08-27 생분해성 물질을 구비한 임플란트
KR10-2018-0100413 2018-08-27
KR10-2019-0084423 2019-07-12
KR1020190084423A KR102120448B1 (ko) 2019-07-12 2019-07-12 생분해 금속을 구비한 치과용 임플란트

Publications (1)

Publication Number Publication Date
WO2020017924A1 true WO2020017924A1 (fr) 2020-01-23

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Application Number Title Priority Date Filing Date
PCT/KR2019/008949 Ceased WO2020017924A1 (fr) 2018-07-19 2019-07-19 Implant dentaire pourvu d'un métal biodégradable

Country Status (1)

Country Link
WO (1) WO2020017924A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112042673A (zh) * 2020-08-31 2020-12-08 营口理工学院 一种黄腐酸银抗菌剂、其制备方法、其应用及尼龙材料
WO2021174325A1 (fr) * 2020-03-05 2021-09-10 Implacil De Bortoli Material Odontológico Implant dentaire

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KR20040094077A (ko) * 2003-05-01 2004-11-09 학교법인 영남학원 칼슘 메타포스페이트로 코팅된 치과용 금속 임플란트 및그 제조방법
KR101122134B1 (ko) * 2011-07-11 2012-03-16 주식회사 메가젠임플란트 치과용 임플란트의 픽스츄어
KR101163621B1 (ko) * 2010-12-23 2012-07-06 주식회사 룡플란트 임플란트용 픽스처
KR20170056330A (ko) * 2015-11-13 2017-05-23 (주) 웹스 생분해성 임플란트 구조체
JP2018079067A (ja) * 2016-11-16 2018-05-24 慶達科技股▲ふん▼有限公司 歯根インプラント

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KR20040094077A (ko) * 2003-05-01 2004-11-09 학교법인 영남학원 칼슘 메타포스페이트로 코팅된 치과용 금속 임플란트 및그 제조방법
KR101163621B1 (ko) * 2010-12-23 2012-07-06 주식회사 룡플란트 임플란트용 픽스처
KR101122134B1 (ko) * 2011-07-11 2012-03-16 주식회사 메가젠임플란트 치과용 임플란트의 픽스츄어
KR20170056330A (ko) * 2015-11-13 2017-05-23 (주) 웹스 생분해성 임플란트 구조체
JP2018079067A (ja) * 2016-11-16 2018-05-24 慶達科技股▲ふん▼有限公司 歯根インプラント

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021174325A1 (fr) * 2020-03-05 2021-09-10 Implacil De Bortoli Material Odontológico Implant dentaire
CN112042673A (zh) * 2020-08-31 2020-12-08 营口理工学院 一种黄腐酸银抗菌剂、其制备方法、其应用及尼龙材料
CN112042673B (zh) * 2020-08-31 2021-10-01 营口理工学院 一种黄腐酸银抗菌剂、其制备方法、其应用及尼龙材料

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