WO2006070957A1 - Orthodontic anchoring device and method for using the anchoring device - Google Patents

Orthodontic anchoring device and method for using the anchoring device Download PDF

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Publication number
WO2006070957A1
WO2006070957A1 PCT/KR2004/003541 KR2004003541W WO2006070957A1 WO 2006070957 A1 WO2006070957 A1 WO 2006070957A1 KR 2004003541 W KR2004003541 W KR 2004003541W WO 2006070957 A1 WO2006070957 A1 WO 2006070957A1
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WO
WIPO (PCT)
Prior art keywords
bracket
anchoring device
resin bond
coupled
anchor
Prior art date
Application number
PCT/KR2004/003541
Other languages
French (fr)
Inventor
Jung-Sub Lee
Original Assignee
Jeil Medical Corporation
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jeil Medical Corporation filed Critical Jeil Medical Corporation
Priority to PCT/KR2004/003541 priority Critical patent/WO2006070957A1/en
Publication of WO2006070957A1 publication Critical patent/WO2006070957A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
    • A61C7/10—Devices having means to apply outwardly directed force, e.g. expanders
    • 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
    • A61C8/0093—Features of implants not otherwise provided for
    • A61C8/0096—Implants for use in orthodontic treatment

Definitions

  • the present invention relates to an orthodontic anchoring device and a method for using the orthodontic anchoring device. More specifically, the present invention relates to an orthodontic anchoring device including a bracket which is installed such that it is separated from a head portion of an anchor screw to protect the implanted anchor screw when an excessive force is applied to the orthodontic anchoring device.
  • an orthodontic method there is a method in which an orthodontic anchor screw is fixed to the gingiva or palate and then connected to a bracket or sheath fixed to a surface of teeth to be straightened by means of a wire or elastic member such that the relevant teeth can be correctly oriented or displaced by applying an adequate force to the teeth.
  • Japanese Patent Laid-open Publication No. 2001-187071 discloses a technology for an orthodontic support used in the aforementioned method.
  • the orthodontic support disclosed in the above patent comprises an implanting member to be implanted in the gingival or palatal bone, and a coupling member with a catching portion that can be easily and detachably caught to a head portion of the implanting member.
  • the coupling member includes an engaging portion for the coupling with the wire or elastic member. That is, the coupling member installed on the head portion of the implanting member is coupled with the sheath fixed to the teeth to be straightened by means of the wire or elastic member to exert a certain force on the teeth.
  • the present invention is conceived to solve the aforementioned problem of the conventional orthodontic support as described above.
  • an orthodontic anchoring device including a means for protecting an implanted anchor screw when a force greater than a predetermined level is applied to the orthodontic anchoring device.
  • the present invention provides an orthodontic anchoring device capable of applying a greater force (hereinafter, referred to as an "orthodontic force") to teeth to be straightened by distributing a supporting force to a plurality anchor screws.
  • an orthodontic anchoring device wherein only a bracket or sheath can be replaced when intending to change the magnitude or direction of a force to be applied to teeth according to the degree of orthodontic treatment.
  • an anchoring device comprising an anchor screw including a threaded portion to be implanted into an oral cavity and a head portion extending from the threaded portion and having a flat top surface; a bracket having a flat bottom surface and including a top portion to which a portion of an orthodontic elastic member is detachably fixed; and a reinforcement plate made of a metallic plate, formed with a plurality of through-holes and coupled to the bottom surface of the bracket, wherein the bottom surface of the bracket with the reinforcement plate coupled thereto is coupled to the top surface of the head portion of the anchor screw implanted in the oral cavity by means of a first resin bond.
  • the bracket when a force greater than a predetermined level is applied to the bracket coupled to the top surface of the anchor screw by means of the resin bond, a bottom surface of the reinforcement plate fixed to the bracket is separated from a bonding surface of the resin bond.
  • the anchor screw is prevented from being detached from a bone, to which the anchor screw is implanted, even though an excessive force is applied to the anchor screw.
  • an anchoring device capable of bearing greater force is necessary to impart greater orthodontic force to the teeth.
  • the present invention provides an anchoring device which is configured to allow a plurality of anchor screws to support an orthodontic force at the same time, thereby improving an improved orthodontic effect.
  • the anchoring device capable of providing greater supporting force further comprises a plurality of anchor screws each formed with unevenness at the top surface of the head portion, and a splint fixed to the top surfaces of the head portions of the plurality of anchor screws by means of a resin bond to distribute a force applied to the bracket over the plurality of anchor screws.
  • the splint is coupled to the top surfaces of the head portions of the plurality of anchor screws implanted in the oral cavity by means of the first resin bond, and the bottom surface of the bracket with the reinforcement plate coupled thereto is coupled to a top surface of the splint by means of a second resin bond.
  • adhesive strength of the first resin bond is greater than that of the second resin bond or surface roughness of the unevenness formed on the top surface of the head portion of the plurality of screws is greater than that of the reinforcement plate attached to the bottom surface of the bracket, so that a boding surface of the resin bond is separated from the bracket when an excessive force is applied to the bracket.
  • the splint is used to distribute a force over the anchor screws, and preferably made of a fiber-reinforced composite (FRC) material for use in dental clinics.
  • FRC fiber-reinforced composite
  • any material may be employed in the present invention, if it has predetermined strength and is not harmful to human body.
  • bracket of the anchoring device When an excessive external force is applied to the bracket of the anchoring device, a bonding surface of the reinforcement plate fixed to the bottom surface of the bracket is separated from the second resin bond. Thus, the separated bracket may be again installed.
  • the existing bracket may be removed and then another kind of bracket may be installed without any damage to the implanted anchor screw when intending to install the new bracket to impart a certain force to the teeth in a different direction.
  • a method of using an anchoring device comprising the steps of (a) preparing an anchor screw including a threaded portion to be implanted into an oral cavity and a head portion with a flat top surface, a bracket having a flat bottom surface and including a top portion to which a portion of the orthodontic elastic member is detachably fixed, and a reinforcement plate made of a metallic plate, formed with a plurality of through-holes, and coupled to the bottom surface of the sheath; (b) implanting the anchor screw into a suitable position in the oral cavity; and (c) coupling the bottom surface of the bracket with the reinforcement plate coupled thereto to the top surface of the head portion of the anchor screw by means of a resin bond.
  • a method of using an anchoring device which includes a fiber-reinforced composite material to provide greater supporting force comprises the steps of (a) preparing a plurality of anchor screws each of which includes a threaded portion to be implanted into an oral cavity and a head portion extending from the threaded portion and having a flat top surface and is formed with unevenness at the top surface of the head portion of the anchor screw; a bracket having a flat bottom surface and including a top portion to which a portion of the orthodontic elastic member is detachably fixed; a reinforcement plate made of a metallic plate, formed with a plurality of through-holes and coupled to the bottom surface of the sheath; and a splint fixed to the top surfaces of the head portions of the plurality of anchor screws by means of a resin bond to distribute a force applied to the bracket over the plurality of anchor screws; (b) implanting the plurality of anchor screws into suitable positions in the oral cavity; (c) coupling the splint made of a fiber-reinforced composite
  • Fig. l is a view illustrating a state where an embodiment of an anchoring device according to an aspect of the present invention is installed within an oral cavity.
  • Fig. 2 is a perspective view showing a bracket and a reinforcement plate according to the embodiment shown in Fig. 1.
  • Figs. 3 to 8 are views illustrating an embodiment of a method for using an anchoring device according to another aspect of the present invention.
  • Fig. 9 is a photograph illustrating an example of using the anchoring device according to the present invention.
  • Fig. 10 is a photograph illustrating another example of using the anchoring device according to the present invention.
  • Figs. 1 and 2 show an embodiment of an anchoring device according to the present invention.
  • the anchoring device of this embodiment comprises two anchor screws 10 to be implanted in an oral cavity, a splint 30 to be fixed to the anchor screws 10 by means of a first resin bond 20, and a bracket or sheath 60 to be fixed onto the splint 30 by means of a second resin bond 40. Further, a reinforcement plate 50 is welded and fixed to a bottom surface of the sheath 60.
  • a bracket in which a through-hole for the insertion of an orthodontic elastic member is formed hereinafter, generally referred to as a "sheath" is used in this embodiment, but another bracket in which a groove is formed instead of the through-hole may be used.
  • Each of the anchor screws 10 comprises a threaded portion 11 which is made of metal such as titanium and will be implanted into a bone in the oral cavity, and a head portion 12 which extends from the threaded portion 11.
  • a top surface 13 of the head portion 12 is formed flat, and thus, the splint 30 or sheath 60 can be easily seated on and bonded to the surface.
  • a '+' or '-' shaped screwdriver recess used for fastening or unfastening the anchor screw 10 is formed on the top surface of the head portion, hi addition, the top surface 13 is surface treated to have predetermined surface roughness such that adhesive strength with the first resin bond 20 can be enhanced.
  • any means for increasing a contact area with the resin bond including using an embossing process, a sanding process or the like or forming a plurality of grooves on the top surface in addition to the screwdriver recess, may be accepted.
  • the splint 30 is made of a general fiber-reinforced composite material 30.
  • the fiber-reinforced composite material 30 is bonded to the head portions of the plurality of anchor screws 10 by means of the resin bond to connect the plurality of anchor screws 10 and to distribute a force exerted on the anchor screws 10 by means of the sheath 60.
  • the reinforcement plate 50 made of metal is formed with a plurality of through-holes 52 for improving a bonding characteristic with the resin bond.
  • the through-hole 52 is circular, the present invention is not limited thereto. That is, the through-hole may be polygonal or have any other suitable shape to control the adhesive strength with the second resin bond 40.
  • a top surface 51 of the reinforcement plate 50 is welded to the bottom surface 63 of the sheath 60, and a bottom surface of the reinforcement plate 50 is bonded to a top surface of the splint 30.
  • a through-hole 61 for allowing an orthodontic elastic member (not shown) such as a hook to be detachably fixed to the sheath 60 is formed on the top surface of the sheath 60.
  • the sheath 60 is made of metal and formed with the through-hole 61.
  • the sheath may be made of a non-metallic material such as ceramic and plastic, or formed with a slot instead of the through-hole 61 for allowing the orthodontic elastic member to be detachably fixed to the sheath.
  • Figs. 3 to 8 sequentially show a method of using the anchoring device according to this embodiment of the present invention.
  • an anchoring device for allowing a hook 70 to be installed to the sheath 60 and the hook and to be coupled with an arch 80 ME-TPA; mesially extended TPA
  • ME-TPA mesially extended TPA
  • the two anchor screws 10 to be implanted at suitable positions in the oral cavity, the sheath 60 with the reinforcement plate 50 welded thereto, the first and second resin bonds 20 and 40, and the splint 30 are prepared.
  • the two anchor screws 10 are implanted at the suitable positions in the oral cavity (Fig. 3).
  • the first resin bond 20 (not shown) and is then bonded the splint 30 made of the fiber-reinforced composite material (Fig. 4).
  • the second resin bond 40 is applied on the top surface of the splint 30 (Fig. 5).
  • the sheath 60 with the reinforcement plate 50 welded thereto is attached over the second resin bond 40 (Fig. 6).
  • a central portion of the hook 70 for imparting an orthodontic force to the teeth is inserted in and fixed to the through-hole 61 of the sheath (Fig. 7).
  • the arch 80 is coupled to a sheath 100 fixed to the teeth and a band 90 is caught to both the arch 80 and the hook 70 so as to impart an orthodontic force to the teeth, hi this embodiment, in a case where the orthodontic anchoring device is installed using the second resin bond with the adhesive strength lower than that of the first resin bond, the anchor screws 10 can be prevented from being damaged because only the sheath 60 is separated from the second resin bond 40 when an excessive force is applied to the sheath 60. Figs.
  • an implanted anchor screw can be protected. Further, since a splint is coupled to a plurality of anchor screws with a resin bond to distribute a supporting force, greater orthodontic force can be applied to teeth to be straightened. In addition, an anchor screw remains unchanged but only the bracket or sheath is replaced such that the magnitude and direction of a force to be applied to the teeth can be simply changed according to the degree of orthodontic treatment.

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  • 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)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

The present invention relates to an orthodontic anchoring device and a method for using the orthodontic anchoring device. More specifically, the present invention relates to an orthodontic anchoring device including a bracket which is installed such that it is separated from a head portion of an anchor screw to protect the implanted anchor screw when an excessive force is applied to the orthodontic anchoring device. The orthodontic anchoring device of the present invention comprises an anchor screw including a threaded portion to be implanted into an oral cavity and a head portion extending from the threaded portion and having a flat top surface; a bracket having a flat bottom surface and formed with a through-hole to which a portion of an orthodontic elastic member is detachably fixed; and a reinforcement plate made of a metallic plate, formed with a plurality of through-holes and coupled to the bottom surface of the bracket. Further, the bottom surface of the bracket with the reinforcement plate coupled thereto is coupled to the top surface of the head portion of the anchor screw implanted in the oral cavity by means of a first resin bond.

Description

ORTHODONTIC ANCHORING DEVICE AND METHOD FOR USING THE ANCHORING DEVICE
Technical Field
The present invention relates to an orthodontic anchoring device and a method for using the orthodontic anchoring device. More specifically, the present invention relates to an orthodontic anchoring device including a bracket which is installed such that it is separated from a head portion of an anchor screw to protect the implanted anchor screw when an excessive force is applied to the orthodontic anchoring device.
Background Art
As an orthodontic method, there is a method in which an orthodontic anchor screw is fixed to the gingiva or palate and then connected to a bracket or sheath fixed to a surface of teeth to be straightened by means of a wire or elastic member such that the relevant teeth can be correctly oriented or displaced by applying an adequate force to the teeth. Japanese Patent Laid-open Publication No. 2001-187071 discloses a technology for an orthodontic support used in the aforementioned method. The orthodontic support disclosed in the above patent comprises an implanting member to be implanted in the gingival or palatal bone, and a coupling member with a catching portion that can be easily and detachably caught to a head portion of the implanting member. The coupling member includes an engaging portion for the coupling with the wire or elastic member. That is, the coupling member installed on the head portion of the implanting member is coupled with the sheath fixed to the teeth to be straightened by means of the wire or elastic member to exert a certain force on the teeth.
In the aforementioned orthodontic support, however, when a large force is applied to the coupling member by excessively tensioning the wire or elastic member, the force exerted on the coupling member is transferred directly to the implanting member. Thus, the implanting member fixed at a proper position may be easily separated from the bone. In a case where the implanting member is separated from the bone, it is not easy to tightly fix the implanting member again to a position of the bone from which the implanting member is separated. Thus, an effective operation for straightening the teeth cannot be obtained.
Disclosure of Invention
Technical Problem
The present invention is conceived to solve the aforementioned problem of the conventional orthodontic support as described above.
According to an aspect of the present invention, there is provided an orthodontic anchoring device including a means for protecting an implanted anchor screw when a force greater than a predetermined level is applied to the orthodontic anchoring device. Further, the present invention provides an orthodontic anchoring device capable of applying a greater force (hereinafter, referred to as an "orthodontic force") to teeth to be straightened by distributing a supporting force to a plurality anchor screws. In addition, the present invention provides an orthodontic anchoring device wherein only a bracket or sheath can be replaced when intending to change the magnitude or direction of a force to be applied to teeth according to the degree of orthodontic treatment.
According to another aspect of the present invention, there is provided a method for using the orthodontic anchoring device as described above. Technical Solution
According to an aspect of the present invention, there is provided an anchoring device, comprising an anchor screw including a threaded portion to be implanted into an oral cavity and a head portion extending from the threaded portion and having a flat top surface; a bracket having a flat bottom surface and including a top portion to which a portion of an orthodontic elastic member is detachably fixed; and a reinforcement plate made of a metallic plate, formed with a plurality of through-holes and coupled to the bottom surface of the bracket, wherein the bottom surface of the bracket with the reinforcement plate coupled thereto is coupled to the top surface of the head portion of the anchor screw implanted in the oral cavity by means of a first resin bond. According to the present invention, when a force greater than a predetermined level is applied to the bracket coupled to the top surface of the anchor screw by means of the resin bond, a bottom surface of the reinforcement plate fixed to the bracket is separated from a bonding surface of the resin bond. Thus, the anchor screw is prevented from being detached from a bone, to which the anchor screw is implanted, even though an excessive force is applied to the anchor screw.
In order to improve an orthodontic effect or shorten an orthodontic period of time, it is necessary to impart greater orthodontic force to teeth to be straightened. Since there is a limit to a force supported by a single anchor screw, the orthodontic force to be applied to the teeth is also limited. Thus, an anchoring device capable of bearing greater force is necessary to impart greater orthodontic force to the teeth. The present invention provides an anchoring device which is configured to allow a plurality of anchor screws to support an orthodontic force at the same time, thereby improving an improved orthodontic effect.
The anchoring device capable of providing greater supporting force according to the present invention further comprises a plurality of anchor screws each formed with unevenness at the top surface of the head portion, and a splint fixed to the top surfaces of the head portions of the plurality of anchor screws by means of a resin bond to distribute a force applied to the bracket over the plurality of anchor screws. Further, the splint is coupled to the top surfaces of the head portions of the plurality of anchor screws implanted in the oral cavity by means of the first resin bond, and the bottom surface of the bracket with the reinforcement plate coupled thereto is coupled to a top surface of the splint by means of a second resin bond. Preferably, adhesive strength of the first resin bond is greater than that of the second resin bond or surface roughness of the unevenness formed on the top surface of the head portion of the plurality of screws is greater than that of the reinforcement plate attached to the bottom surface of the bracket, so that a boding surface of the resin bond is separated from the bracket when an excessive force is applied to the bracket. The splint is used to distribute a force over the anchor screws, and preferably made of a fiber-reinforced composite (FRC) material for use in dental clinics. However, any material may be employed in the present invention, if it has predetermined strength and is not harmful to human body. When an excessive external force is applied to the bracket of the anchoring device, a bonding surface of the reinforcement plate fixed to the bottom surface of the bracket is separated from the second resin bond. Thus, the separated bracket may be again installed. Alternatively, the existing bracket may be removed and then another kind of bracket may be installed without any damage to the implanted anchor screw when intending to install the new bracket to impart a certain force to the teeth in a different direction.
According to another aspect of the present invention, there is provided a method of using an anchoring device, comprising the steps of (a) preparing an anchor screw including a threaded portion to be implanted into an oral cavity and a head portion with a flat top surface, a bracket having a flat bottom surface and including a top portion to which a portion of the orthodontic elastic member is detachably fixed, and a reinforcement plate made of a metallic plate, formed with a plurality of through-holes, and coupled to the bottom surface of the sheath; (b) implanting the anchor screw into a suitable position in the oral cavity; and (c) coupling the bottom surface of the bracket with the reinforcement plate coupled thereto to the top surface of the head portion of the anchor screw by means of a resin bond.
Further, a method of using an anchoring device which includes a fiber-reinforced composite material to provide greater supporting force comprises the steps of (a) preparing a plurality of anchor screws each of which includes a threaded portion to be implanted into an oral cavity and a head portion extending from the threaded portion and having a flat top surface and is formed with unevenness at the top surface of the head portion of the anchor screw; a bracket having a flat bottom surface and including a top portion to which a portion of the orthodontic elastic member is detachably fixed; a reinforcement plate made of a metallic plate, formed with a plurality of through-holes and coupled to the bottom surface of the sheath; and a splint fixed to the top surfaces of the head portions of the plurality of anchor screws by means of a resin bond to distribute a force applied to the bracket over the plurality of anchor screws; (b) implanting the plurality of anchor screws into suitable positions in the oral cavity; (c) coupling the splint made of a fiber-reinforced composite materials onto the top surfaces of the head portions of the plurality of anchor screws implanted in the oral cavity by means of a first resin bond; and (d) coupling the bottom surface of the bracket with the reinforcement plate coupled thereto to a top surface of the splint.
Brief Description of Drawings
Fig. l is a view illustrating a state where an embodiment of an anchoring device according to an aspect of the present invention is installed within an oral cavity.
Fig. 2 is a perspective view showing a bracket and a reinforcement plate according to the embodiment shown in Fig. 1.
Figs. 3 to 8 are views illustrating an embodiment of a method for using an anchoring device according to another aspect of the present invention. Fig. 9 is a photograph illustrating an example of using the anchoring device according to the present invention.
Fig. 10 is a photograph illustrating another example of using the anchoring device according to the present invention.
<Brief Explanation for Reference Numerals> 10: Anchor screw 20: First resin bond
30: Splint 40: Second resin bond
50: Reinforcement plate 60: Bracket
Best Mode Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Figs. 1 and 2 show an embodiment of an anchoring device according to the present invention. The anchoring device of this embodiment comprises two anchor screws 10 to be implanted in an oral cavity, a splint 30 to be fixed to the anchor screws 10 by means of a first resin bond 20, and a bracket or sheath 60 to be fixed onto the splint 30 by means of a second resin bond 40. Further, a reinforcement plate 50 is welded and fixed to a bottom surface of the sheath 60. A bracket in which a through-hole for the insertion of an orthodontic elastic member is formed (hereinafter, generally referred to as a "sheath") is used in this embodiment, but another bracket in which a groove is formed instead of the through-hole may be used. Each of the anchor screws 10 comprises a threaded portion 11 which is made of metal such as titanium and will be implanted into a bone in the oral cavity, and a head portion 12 which extends from the threaded portion 11. A top surface 13 of the head portion 12 is formed flat, and thus, the splint 30 or sheath 60 can be easily seated on and bonded to the surface. Further, a '+' or '-' shaped screwdriver recess used for fastening or unfastening the anchor screw 10 is formed on the top surface of the head portion, hi addition, the top surface 13 is surface treated to have predetermined surface roughness such that adhesive strength with the first resin bond 20 can be enhanced. As a surface treatment process, any means for increasing a contact area with the resin bond, including using an embossing process, a sanding process or the like or forming a plurality of grooves on the top surface in addition to the screwdriver recess, may be accepted.
The splint 30 is made of a general fiber-reinforced composite material 30. The fiber-reinforced composite material 30 is bonded to the head portions of the plurality of anchor screws 10 by means of the resin bond to connect the plurality of anchor screws 10 and to distribute a force exerted on the anchor screws 10 by means of the sheath 60.
Referring to Fig. 2, the reinforcement plate 50 made of metal is formed with a plurality of through-holes 52 for improving a bonding characteristic with the resin bond. Although it has been illustrated in this embodiment that the through-hole 52 is circular, the present invention is not limited thereto. That is, the through-hole may be polygonal or have any other suitable shape to control the adhesive strength with the second resin bond 40. A top surface 51 of the reinforcement plate 50 is welded to the bottom surface 63 of the sheath 60, and a bottom surface of the reinforcement plate 50 is bonded to a top surface of the splint 30. A through-hole 61 for allowing an orthodontic elastic member (not shown) such as a hook to be detachably fixed to the sheath 60 is formed on the top surface of the sheath 60. In this embodiment, the sheath 60 is made of metal and formed with the through-hole 61. However, the sheath may be made of a non-metallic material such as ceramic and plastic, or formed with a slot instead of the through-hole 61 for allowing the orthodontic elastic member to be detachably fixed to the sheath.
Figs. 3 to 8 sequentially show a method of using the anchoring device according to this embodiment of the present invention. In this embodiment, a case where an anchoring device for allowing a hook 70 to be installed to the sheath 60 and the hook and to be coupled with an arch 80 (ME-TPA; mesially extended TPA) by means of an elastic band 90 in order to impart an orthodontic force to a pair of molar teeth 100 as shown in Fig.
8 will be explained. First, the two anchor screws 10 to be implanted at suitable positions in the oral cavity, the sheath 60 with the reinforcement plate 50 welded thereto, the first and second resin bonds 20 and 40, and the splint 30 are prepared. Next, the two anchor screws 10 are implanted at the suitable positions in the oral cavity (Fig. 3). Next, on the top surfaces of the head portions of the two anchor screws 10 is applied the first resin bond 20 (not shown) and is then bonded the splint 30 made of the fiber-reinforced composite material (Fig. 4). Next, the second resin bond 40 is applied on the top surface of the splint 30 (Fig. 5). The sheath 60 with the reinforcement plate 50 welded thereto is attached over the second resin bond 40 (Fig. 6). A central portion of the hook 70 for imparting an orthodontic force to the teeth is inserted in and fixed to the through-hole 61 of the sheath (Fig. 7). Next, the arch 80 is coupled to a sheath 100 fixed to the teeth and a band 90 is caught to both the arch 80 and the hook 70 so as to impart an orthodontic force to the teeth, hi this embodiment, in a case where the orthodontic anchoring device is installed using the second resin bond with the adhesive strength lower than that of the first resin bond, the anchor screws 10 can be prevented from being damaged because only the sheath 60 is separated from the second resin bond 40 when an excessive force is applied to the sheath 60. Figs.
9 and 10 show examples of using the anchoring device, respectively, according to the present invention.
Industrial Applicability According to the present invention, since only a bracket or sheath is separated when a force greater than a predetermined level is applied to an orthodontic anchoring device, an implanted anchor screw can be protected. Further, since a splint is coupled to a plurality of anchor screws with a resin bond to distribute a supporting force, greater orthodontic force can be applied to teeth to be straightened. In addition, an anchor screw remains unchanged but only the bracket or sheath is replaced such that the magnitude and direction of a force to be applied to the teeth can be simply changed according to the degree of orthodontic treatment.
It should not be construed that the embodiment of the present invention described above and illustrated in the drawings limit the technical spirit of the present invention. The scope of the present invention should be defined only by the appended claims. It is apparent to those skilled in the art that various modifications and changes can be made thereto within the technical spirit of the invention. Therefore, the modifications and changes will fall within the scope of the present invention so long as they are apparent to those skilled in the art.

Claims

1. An anchoring device for fixing an orthodontic elastic member, comprising: an anchor screw including a threaded portion to be implanted into an oral cavity and a head portion extending from the threaded portion and having a flat top surface; a bracket having a flat bottom surface and including a top portion to which a portion of the orthodontic elastic member is detachably fixed; and a reinforcement plate made of a metallic plate, formed with a plurality of through- holes and coupled to the bottom surface of the bracket, wherein the bottom surface of the bracket with the reinforcement plate coupled thereto is coupled to the top surface of the head portion of the anchor screw implanted in the oral cavity by means of a first resin bond.
2. The anchoring device as claimed in claim 1, wherein: the plurality of anchor screws are implanted into the oral cavity and formed with unevenness at the top surface of the head portion; the anchoring device further comprises a splint fixed to the top surfaces of the head portions of the plurality of anchor screws by means of a resin bond to distribute a force applied to the bracket over the plurality of anchor screws; and the splint is coupled to the top surfaces of the head portions of the plurality of anchor screws implanted in the oral cavity by means of the first resin bond, and the bottom surface of the sheath with the reinforcement plate coupled thereto is coupled to a top surface of the splint made of a fiber-reinforced composite material by means of a second resin bond.
3. The anchoring device as claimed in claim 2, wherein adhesive strength of the first resin bond is greater than that of the second resin bond.
4. The anchoring device as claimed in claim 2, wherein surface roughness of the unevenness formed on the top surface of the head portion of the plurality of screws is greater than that of the reinforcement plate attached to the bottom surface of the bracket.
5. The anchoring device as claimed in any one of claims 1 to 4, wherein the bracket is formed with at least one through-hole to which a portion of the orthodontic elastic member is inserted and fixed.
6. A method of using an anchoring device for fixing an orthodontic elastic member according to claim 1, comprising the steps of:
(a) preparing an anchor screw including a threaded portion to be implanted into an oral cavity and a head portion with a flat top surface, a bracket having a flat bottom surface and including a top portion to which a portion of the orthodontic elastic member is detachably fixed, and a reinforcement plate made of a metallic plate, formed with a plurality of through-holes, and coupled to the bottom surface of the sheath;
(b) implanting the anchor screw into a suitable position in the oral cavity; and (c) coupling the bottom surface of the bracket with the reinforcement plate coupled thereto to the top surface of the head portion of the anchor screw by means of a resin bond.
7. A method of using an anchoring device for fixing an orthodontic elastic member according to any one of claims 2 to 4, comprising the steps of:
(a) preparing a plurality of anchor screws each of which includes a threaded portion to be implanted into an oral cavity and a head portion extending from the threaded portion and having a flat top surface and is formed with unevenness at the top surface of the head portion of the anchor screw; a bracket having a flat bottom surface and including a top portion to which a portion of the orthodontic elastic member is detachably fixed; a reinforcement plate made of a metallic plate, formed with a plurality of through-holes and coupled to the bottom surface of the sheath; and a splint fixed to the top surfaces of the head portions of the plurality of anchor screws by means of a resin bond to distribute a force applied to the bracket over the plurality of anchor screws; (b) implanting the plurality of anchor screws into suitable positions in the oral cavity;
(c) coupling the splint made of a fiber-reinforced composite materials onto the top surfaces of the head portions of the plurality of anchor screws implanted in the oral cavity by means of a first resin bond; and
(d) coupling the bottom surface of the bracket with the reinforcement plate coupled thereto to a top surface of the splint by means of a second resin bond.
PCT/KR2004/003541 2004-12-31 2004-12-31 Orthodontic anchoring device and method for using the anchoring device WO2006070957A1 (en)

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Publication number Priority date Publication date Assignee Title
WO2013184948A1 (en) * 2012-06-07 2013-12-12 Propel Orthodontics, Llc Temporary anchorage device with external plate
US8770969B2 (en) 2011-05-13 2014-07-08 Propel Orthodontics, Llc Method and device for causing tooth movement
USD761963S1 (en) 2014-07-29 2016-07-19 Propel Orthodontics, Llc Microperforation dental device

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US6419491B1 (en) * 1993-11-02 2002-07-16 Bio-Lok International, Inc. Dental implant system with repeating microgeometric surface patterns

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
JPH02114956A (en) * 1988-10-24 1990-04-27 Yasuyuki Sugano Material for denture base for photopolymerization system
US6419491B1 (en) * 1993-11-02 2002-07-16 Bio-Lok International, Inc. Dental implant system with repeating microgeometric surface patterns

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8770969B2 (en) 2011-05-13 2014-07-08 Propel Orthodontics, Llc Method and device for causing tooth movement
US9387051B2 (en) 2011-05-13 2016-07-12 Propel Orthodontics, Llc Method and device for causing tooth movement
US9814547B2 (en) 2011-05-13 2017-11-14 Propel Orthodontics, Llc Method and device for causing tooth movement
US10245122B2 (en) 2011-05-13 2019-04-02 Advanced Orthodontics And Education Association, Llc Method and device for causing tooth movement
WO2013184948A1 (en) * 2012-06-07 2013-12-12 Propel Orthodontics, Llc Temporary anchorage device with external plate
US9687323B2 (en) 2012-06-07 2017-06-27 Propel Orthodontics, Llc Temporary anchorage device with external plate
USD761963S1 (en) 2014-07-29 2016-07-19 Propel Orthodontics, Llc Microperforation dental device

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