KR100759470B1 - Anchor-screw for using in fixing an orthodontic wire - Google Patents

Abstract

An anchor-screw used for fixing an orthodontic wire is provided to achieve the strong fixing force by easily and strongly adhering the screw to a cell tissue of tooth bone by means of a structure of determined hollow and transverse hole within the screw. An anchor-screw used for fixing an orthodontic wire, includes: a screw head(110), arranged in a top of the screw itself and having a fixation(111) for hanging and fixing a supporting element of the orthodontic wire; a threaded portion(120), connected to a lower end of the screw head, and having a tapered form, on an outer circumference of which a threaded structure is shaped; many transverse holes(123.N), penetrated transversely through the threaded portion, and filled with an adhesive material for adhering the screw itself to a bone tissue of a corresponding tooth; and a longitudinal hollow(130), bored vertically from a top end of the screw head to a one point over a lower end of the threaded portion, and filled also with the adhesive material.

Description

Anchor screws for fixing wire rods for orthodontics {ANCHOR-SCREW FOR USING IN FIXING AN ORTHODONTIC WIRE}

1 is a view showing the appearance and cross-section of each side of the anchor screw used for fixing the orthodontic wire rod according to an embodiment of the present invention.

Figure 2 is a view showing the appearance and cross section of each side of the anchor screw used for fixing the orthodontic wire rod according to another embodiment of the present invention.

Figure 3 is a view showing a state in which the cap is removed from the anchor screw used for fixing the orthodontic wire having a removable cap on the top, according to another embodiment of the present invention.

4 is a view showing a state in which the cap is fitted in the anchor screw of FIG.

<Explanation of symbols for the main parts of the drawings>

110: screw head

111: fixing part 112: screw connection hole

113: holding part 114: boundary plate

115: head top

120: threaded portion

121: upper thread 122: lower thread

123.1 ~ 123.N: Horizontal hole

130: hollow part

130.1: Hollow bottom surface

210: screw head

211: fixing portion 212: screw connection hole

213: holding part 214: boundary plate

215: Cross

220: screw thread

221.1 ~ 221.N: Horizontal hole

230: hollow part

230.1: hollow bottom surface

310: screw head

311: top surface of the screw head

312: cross

320: threaded portion

321: upper thread 322: lower thread

323.1 ~ 323.N: Horizontal hole

330: hollow portion 330.1: hollow bottom surface

340: screw cap

341: screw cap head 342: coupling rod

343: cap head hole

The present invention relates to an anchor screw used for fixing a dental orthodontic wire, and more specifically, by having a predetermined hollow portion and a transverse hole structure therein to be suitable for bone bonding, the anchor screw can be strongly fixed to the tooth. The present invention relates to an anchor screw for use in fixing a dental orthodontic wire rod.

The micro screw used as the anchor of the orthodontic wire rod has been trying to improve its performance mainly by adjusting the number and angle of the threads and changing the surface structure.

For example, in order to correct the teeth, attach the bracket adhesive part to the surface of the teeth and connect the bracket with wire to apply the force to correct the teeth. To fix the teeth, the micro screw is used as an anchor to fix the wire for the period. You have to drive in.

If these microscrews are pulled out before the treatment is completed, it is cumbersome to install the anchor and bracket structure again and the patient is inconvenient. In practice, such anchor screws require strong adhesion to dental bone tissue in situations where the average detachment rate of anchors typically reaches 30%. Republic of Korea Utility Model Registration No. 20-2002-0010763 (application number) provides a screw for orthodontics, characterized in that the portion connected to the driver consists of a four-pyramid and has a structure capable of transmitting a large torque.

However, it is unreasonable to bear strong tensile force only by adjusting the number and angle of threads and by changing the surface structure in micro screws manufactured under 2mm in diameter and 15mm in length.

The present invention has been devised to solve the above problems, and by using a predetermined hollow portion and a hole structure in the transverse direction there is easy and strong adhesion of the dental osteoblast tissue and screws, resulting in a strong anchoring orthodontic anchor The purpose is to provide a screw structure.

In order to achieve the above object, the anchor screw used for fixing the orthodontic wire rod according to the present invention, a screw head portion including a fixing portion for fixing the support member of the orthodontic wire rod on the top; A screw thread portion connected to a lower end of the screw head portion and having a thread structure formed on the outside in a tapered shape; A plurality of horizontal holes penetrating the threaded portion in the horizontal direction and filled with a material (hereinafter referred to as an adhesive material) for adhering the anchor screw and the dental bone tissue; And a vertical groove formed in the vertical direction from an upper end of the screw head part to a point on the lower end of the screw thread part, the vertical hollow part in which the adhesive material is filled.

Preferably, the screw head portion may include a screw connection hole through which a wire rod for connection with other anchor screws bonded to the dental bone tissue passes.

The horizontal hole may be formed in a direction perpendicular to the vertical hollow portion.

In addition, the horizontal hole may be formed in an oblique direction at a predetermined angle with the vertical hollow portion.

It is good that the said thread part consists of a thread upper part and a thread lower part, and the pitch of the thread formed in the outer side of the said thread upper part is smaller than the pitch of the thread formed in the outer side of the said thread lower end.

According to another aspect of the present invention, there is provided an anchor screw for fixing a wire for orthodontic teeth, comprising: a thread portion having a thread structure formed on the outside in a tapered shape; A screw cap coupled to the threaded portion by fitting to an upper end of the threaded portion, the screw cap being detachable from the threaded portion; A plurality of horizontal holes penetrating the threaded portion in the horizontal direction and filled with a material (hereinafter referred to as an adhesive material) for adhering the anchor screw and the dental bone tissue; And a vertical groove formed in the longitudinal direction from an upper end of the threaded portion to a point on the lower end of the threaded portion, the hollow having a longitudinal direction filled with the adhesive material, wherein the screw cap comprises the screw cap at the center of the threaded portion. A cap head used to grip the screw cap when detaching the longitudinal hollow portion of the cap head; And a coupling rod connected to a lower end of the cap head and configured to fit into a longitudinal hollow portion of the center of the screw portion.

The horizontal hole may be formed in a direction perpendicular to the vertical hollow portion.

In addition, the horizontal hole may be formed in an oblique direction at a predetermined angle with the longitudinal hollow portion.

It is preferable that the said thread part consists of a thread upper part and a thread lower part, and the pitch of the thread formed in the outer side of the said thread upper part is smaller than the pitch of the thread formed in the outer side of the said thread lower end.

The screw cap may include a cap head hole through which a wire rod for connection with another anchor screw adhered to the dental bone tissue passes or a support member of the wire for orthodontic teeth passes.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

1 is a view showing the appearance and cross section of each side of the anchor screw used for fixing the wire for orthodontic teeth according to an embodiment of the present invention. Referring to the drawings, the hatched views are cross-sectional views of each side of the anchor screw, and the hatched views are outline views of each side of the anchor screw. The screw head portion 110 is a portion that is exposed to the outside when the anchor screw is embedded in the gum. The gripping portion 113 is a portion to be gripped by a mechanism, and can be driven or removed from the anchor screw by gripping and turning. In this figure, the grip part 113 of a hexagon is shown. 'T'-shaped portion above the grip portion 113 is a portion for fixing the support member (not shown) of the orthodontic wire rod. That is, the orthodontic wire rod is fitted to the fixing mechanism attached to the teeth, and the one end of the support member is hooked to the orthodontic wire rod and the other end is fastened to the fixing portion 111 of the 'T'-shaped portion. By fixing the wire for orthodontic teeth. The screw connection hole 112 penetrates a screw connecting wire (not shown), and the screw connecting wire is connected between the anchor screws by penetrating through the screw connecting hole of the other anchor screws embedded in the gum. Strengthen the formed structure. The threaded portion 120, which is a portion below the boundary plate 114, is a portion that is embedded in the dental bone tissue in the gum. In the embodiment of the figure, the upper thread 121 and the lower thread 122 are divided into different thread pitches. When screwing the anchor screw in the gum, the upper thread 121 is embedded in a hard part (dense bone, cortical bone) close to the gum surface of the dental bone tissue, so that a tight thread is formed at a small pitch to strengthen the adhesion strength. The lower thread 122, which is embedded in the deep part, that is, the relatively soft tooth bone tissue (the cancellous bone), has a larger pitch.

The use of a number of transverse holes (123.1 to 123.N, hereinafter referred to as 123.N) shown in the outline and cross-sectional view of the figure is that over time the tooth bone tissue in the gum with the anchor screw is embedded in the gum. Accordingly, the inlet is to flow through the horizontal hole 123.N. The introduced dental bone tissue is filled up in the longitudinal hollow portion 130 shown in the sectional view. The dental bone tissue filled in the horizontal hole 123.N and the hollow portion 130 in the longitudinal direction forms a structure bonded to each other with the anchor screw of the present invention to prevent the anchor screw from easily falling out of the gum during orthodontic treatment. give.

As another embodiment, instead of allowing the dental bone tissue to naturally flow into the horizontal hole (123.N) and the vertical hollow portion 130, a bioadhesive for adhering the dental bone and the anchor screw inside the gum The adhesive structure as described above may be formed by flowing into the vertical hollow portion 130 and the horizontal hole 123.N. In this case, the bioadhesive may flow into the head top 115 because the bioadhesive must be introduced after the anchor screw is put into the gum. Inside the circle 115 representing the top of the head in the drawing 140 viewed from the top of the head top 115 is the longitudinal hollow portion 130 of the anchor screw, the bottom surface of the hollow portion that is the bottom surface of the hollow portion 130. (130.1) is shown by the small circle inside. That is, when the bioadhesive is introduced as described above, the bioadhesive may be poured into the head top circle 115 of the drawing 140 viewed from the top of the head top 115.

Figure 2 is a view showing the appearance and cross section of each side of the anchor screw used for fixing the orthodontic wire rod according to another embodiment of the present invention. Referring to the drawings, the hatched views are cross-sectional views of each side of the anchor screw, and the hatched views are outline views of each side of the anchor screw. The anchor screw of this figure is different from the anchor screw of FIG. 1 in the form of the screw head portion 210 and the structure of the threaded portion 220. That is, the gripping portion 213 is located at the top of the screw head portion 210, and in the drawing 240 viewed from the top of the gripping portion 213, a screwdriver may be inserted into the inner side to detach the anchor screw. There is a cross groove 215 that can be. In addition, the threaded portion 220 has a uniform pitch and a sharper structure than the anchor screw of FIG. 1. In addition, the roles of the fixing part 211, the screw connection hole 212, the hollow part 230, and the horizontal holes 221.1 to 221.N are the same as described with reference to the anchor screw of FIG. 1.

Figure 3 is a view showing a state in which the cap is removed from the anchor screw used for fixing the orthodontic wire rod having a removable cap on the top according to another embodiment of the present invention. Referring to the drawings, an internal projection 301 and an outline 302 of the present anchor screw are shown. Although the outline view 302 shows only the outline of the anchor screw, the internal projection view 301 shows a line representing the hollow portion 330 inside the anchor screw. The top surface 311 of the screw head 310 has a cross groove 312 for detaching the anchor screw by turning a Phillips screwdriver, and the bottom surface of the hollow portion from the top surface 311 of the screw head portion (311). Up to 330.1). The threaded portion 320 in the embodiment of the figure is divided into a threaded upper portion 321 and a lower threaded portion 322 with different pitches, and the threaded portion 320 has a plurality of horizontal holes 323.1 to 323.N. (Hereinafter referred to as 323.N). Advantages of dividing the upper thread 321 and the lower thread 322 and the role of the hollow portion 330 and the transverse hole 323.N are the same as described with reference to the anchor screw of FIG.

The screw cap 340 is coupled to the threaded portion 320 by being fitted into the hollow portion 330 from the upper end 311 of the threaded head portion, and can be detached from the threaded portion 320. The screw cap 340 is a screw cap head 341 and the screw cap head used to grip the screw cap 340 when the screw cap 340 is detached to the longitudinal hollow portion 330 at the center of the screw thread 320. 341 is connected to the lower end, and consists of a coupling rod 342 formed to be fitted to the longitudinal hollow portion 330 in the center of the screw thread (320). The cap head hole 343 of the screw cap head 341 penetrates a wire rod for screw connection (not shown), and the wire for screw connection passes through the screw connection hole of other anchor screws embedded in the gum. By connecting them, the structure formed between the anchor screws can be strengthened. In addition, the cap head hole 343 may be used to hook and fix the support member (not shown) of the wire for orthodontic teeth. That is, the orthodontic wire rod is fitted to the fixing mechanism attached to the tooth, and the tooth orthodontic wire rod is hung on one end of the support member, and the opposite end is hung on the cap head hole 343. The wire rod can be fixed.

FIG. 4 is a view showing a state where a cap is fitted in the anchor screw of FIG. 3. FIG.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto, and the technical spirit of the present invention and the following will be understood by those skilled in the art to which the present invention pertains. Various modifications and variations are possible, of course, within the scope of equivalents of the claims to be described.

According to the present invention, there is an effect of providing a strong anchoring anchor screw structure with strong fixation force as a result of easy and strong adhesion of dental osteocytic tissue and screws by a predetermined hollow and transverse hole structure therein.

Claims (4)

Anchor screws used to fix the wire rod for orthodontics, A screw head portion including a fixing portion configured to fasten and support a support member of a wire for orthodontic teeth on the uppermost portion; A screw thread portion connected to a lower end of the screw head portion and having a thread structure formed on the outside in a tapered shape; A plurality of horizontal holes penetrating the threaded portion in the horizontal direction and filled with a material (hereinafter referred to as an adhesive material) for adhering the anchor screw and the dental bone tissue; And A vertical groove formed in the longitudinal direction from an upper end of the screw head part to a point on the lower end of the threaded part, the vertical hollow part in which the adhesive material is filled; Consisting of, The horizontal hole, Formed in a direction perpendicular to the vertical hollow portion or in an oblique direction at a predetermined angle Anchor screws used for fixing the orthodontic wire rod, characterized in that. The method according to claim 1, The threaded portion, Consisting of a threaded top and a threaded bottom, The pitch of the threads formed on the outside of the upper thread is smaller than the pitch of the threads formed on the outside of the lower thread Anchor screws used for fixing the orthodontic wire rod, characterized in that. Anchor screws used to fix the wire rod for orthodontics, A thread portion having a thread structure formed on the outside in a tapered shape; A screw cap coupled to the threaded portion by fitting to an upper end of the threaded portion, the screw cap being detachable from the threaded portion; A plurality of horizontal holes penetrating the threaded portion in the horizontal direction and filled with a material (hereinafter referred to as an adhesive material) for adhering the anchor screw and the dental bone tissue; And A vertical groove formed in the longitudinal direction from an upper end of the threaded portion to a point above the lower end of the threaded portion, the hollow having a longitudinal direction filled with the adhesive material; Consisting of, The screw cap, A screw cap head used to grip the screw cap when the screw cap is detached from the longitudinal hollow portion at the center of the thread portion; And Is coupled to the lower end of the screw cap head, the coupling rod formed to be fitted to the longitudinal hollow portion in the center of the screw; The horizontal hole, Formed in a direction perpendicular to the vertical hollow portion or in an oblique direction at a predetermined angle Anchor screws used for fixing the orthodontic wire rod, characterized in that. The method according to claim 3, The threaded portion, Consisting of a threaded top and a threaded bottom, The pitch of the threads formed on the outside of the upper thread is smaller than the pitch of the threads formed on the outside of the lower thread Anchor screws used for fixing the orthodontic wire rod, characterized in that.

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