WO2018225161A1 - Boîtier orthodontique et dispositif orthodontique - Google Patents

Boîtier orthodontique et dispositif orthodontique Download PDF

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Publication number
WO2018225161A1
WO2018225161A1 PCT/JP2017/021007 JP2017021007W WO2018225161A1 WO 2018225161 A1 WO2018225161 A1 WO 2018225161A1 JP 2017021007 W JP2017021007 W JP 2017021007W WO 2018225161 A1 WO2018225161 A1 WO 2018225161A1
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WO
WIPO (PCT)
Prior art keywords
orthodontic
opening
cover member
shape
shaft
Prior art date
Application number
PCT/JP2017/021007
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English (en)
Japanese (ja)
Inventor
由紀夫 田嶋
Original Assignee
株式会社Ａｔｏｍｅｒ
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 株式会社Ａｔｏｍｅｒ filed Critical 株式会社Ａｔｏｍｅｒ
Priority to PCT/JP2017/021007 priority Critical patent/WO2018225161A1/fr
Publication of WO2018225161A1 publication Critical patent/WO2018225161A1/fr

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    • 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
    • A61C7/12—Brackets; Arch wires; Combinations thereof; Accessories therefor
    • A61C7/28—Securing arch wire to bracket

Definitions

  • the present invention relates to a technique for correcting a dentition.
  • Patent Document 1 discloses an orthodontic bracket that includes an archwire slot and a lock member that can move to open and close the archwire slot.
  • Patent Document 2 discloses an orthodontic bracket including a slot that accommodates an archwire and a lock member that fixes the archwire.
  • Patent Document 3 discloses an orthodontic bracket including an insertion path into which an archwire is inserted and a fixing pin that fixes the archwire.
  • Patent Document 4 discloses an orthodontic bracket having a slot for holding an archwire.
  • JP 2001-104340 A Japanese Patent Laid-Open No. 2003-070808 JP 2005-245919 A JP 2010-274110 A
  • the orthodontic bracket is typically adhered to the teeth using an adhesive.
  • the adhesive may flow down from the bonding surface bonded to the teeth, and the adhesive force may be weakened.
  • An object of this invention is to strengthen the adhesive force with respect to the tooth of an orthodontic bracket.
  • the present invention provides an orthodontic bracket having an adhesive surface that is adhered to a tooth by an adhesive, the concave portion being formed in the adhesive surface, and at least a part of which has a recessed opening. To do.
  • the concave portion may have a shape in which a central portion having a square cross section swells.
  • the adhesive surface may have a shape in which at least a part is recessed.
  • the adhesive surface may have a shape whose cross section is curved on the side opposite to the teeth.
  • the orthodontic bracket includes a bottom portion having the adhesive surface, a shaft that is opened through a first opening and receives an orthodontic wire so that the groove extends from one end to the other end, and the bottom portion.
  • a first support portion and a second support portion provided to support one end and the other end of the shaft, respectively, and a hollow portion that is opened through a second opening extending along the groove and through which the shaft passes.
  • An open position provided between the first support portion and the second support portion, wherein the first opening portion and the second opening portion overlap, and the first opening portion and the second opening portion overlap.
  • a cover member supported by the shaft so as to be rotatable between the closed position and the cover member; and the cover member is provided on the cover member, and when the cover member rotates to the open position, the cover member comes into contact with the bottom portion A stopper for stopping the member There.
  • the present invention also includes an orthodontic wire and a plurality of orthodontic brackets for holding the orthodontic wire, and each of the plurality of orthodontic brackets is bonded to a tooth with an adhesive.
  • an orthodontic appliance in which a concave portion is formed on the adhesive surface, and at least a part of the adhesive surface has a shape in which an opening is depressed.
  • the adhesive force of the orthodontic bracket to the teeth can be enhanced.
  • FIG. 2 is a perspective view showing an example of an orthodontic bracket 20.
  • FIG. 2 is an exploded perspective view showing an example of an orthodontic bracket 20.
  • FIG. 4 is a plan view showing an example of a base member 30.
  • FIG. 3 is a front view showing an example of a base member 30.
  • FIG. 4 is a side view showing an example of a base member 30.
  • FIG. 4 is a bottom view showing an example of a base member 30.
  • FIG. FIG. 5 is a cross-sectional view showing an example of a base member 30 as viewed from the direction of arrow II in FIG. FIG.
  • FIG. 5 is a cross-sectional view showing an example of a base member 30 viewed from the direction of arrow II-II in FIG. It is an enlarged view which shows an example of the A section in FIG. 3 is a front view showing an example of a shaft 40.
  • FIG. 3 is a side view showing an example of a shaft 40.
  • FIG. 4 is a side view showing an example of a cover member 50.
  • FIG. 4 is a plan view showing an example of a cover member 50.
  • FIG. It is sectional drawing which shows an example of the cover member 50 seen from the arrow III-III direction in FIG. It is a figure which shows an example of the usage method of the orthodontic bracket.
  • It is a top view which shows an example of the orthodontic bracket 20 of the state which the cover member 50 moved to the open position.
  • It is a top view which shows an example of the orthodontic bracket 20 of the state which the cover member 50 moved to the closed position.
  • FIG. 1 is a diagram illustrating an example of an orthodontic apparatus 1 according to the present embodiment.
  • the orthodontic apparatus 1 is used for orthodontic correction.
  • the orthodontic apparatus 1 is mounted on the surface of the tooth 2.
  • the orthodontic apparatus 1 is mounted on the back side of the tooth 2, that is, on the lingual side surface of the tooth 2.
  • the orthodontic apparatus 1 includes an orthodontic wire 10 and a plurality of orthodontic brackets 20.
  • the orthodontic wire 10 applies an orthodontic force to the teeth 2.
  • the orthodontic wire 10 has a shape matched to the orthodontic teeth after correction.
  • the orthodontic wire 10 has a substantially arch shape.
  • the orthodontic wire 10 is formed of an elastic material.
  • the orthodontic wire 10 is formed of a shape memory alloy, and the teeth 2 are gradually moved by a force for returning to the original shape.
  • the cross section of the orthodontic wire 10 is, for example, circular.
  • the cross-sectional shape of the orthodontic wire 10 may be a shape other than a circle, for example, a quadrangle.
  • the orthodontic wire 10 may be thinner than the orthodontic wire generally used in the conventional orthodontic apparatus. Commonly used orthodontic wires have a thickness of at least 0.12 inches in diameter. On the other hand, the thickness of the orthodontic wire 10 may be, for example, 0.08 inches in diameter.
  • FIG. 2 is a perspective view showing an example of the orthodontic bracket 20.
  • FIG. 3 is an exploded perspective view showing an example of the orthodontic bracket 20.
  • the orthodontic bracket 20 is fixed to the tooth 2 and holds the orthodontic wire 10.
  • the orthodontic bracket 20 is formed of a material having a predetermined strength. This predetermined strength is, for example, such a strength that it is difficult to crack or scratch.
  • the orthodontic bracket 20 is made of metal.
  • the material of the orthodontic bracket 20 is not limited to metal. For example, ceramics or silicon may be used as the material of the orthodontic bracket 20.
  • the orthodontic bracket 20 may be smaller than the conventional orthodontic bracket.
  • the orthodontic bracket 20 has a size of 2.10 mm in width, 2. It may be 65 mm and height 1.84 mm.
  • the size of the orthodontic bracket 20 is not limited to this dimension.
  • the size of the orthodontic bracket 20 may be smaller than this dimension.
  • the orthodontic wire 10 is held at a position close to the central axis of the tooth 2.
  • the force required to move the teeth 2 is reduced, it is possible to employ an orthodontic wire 10 that is thinner than an orthodontic wire that is generally used as described above.
  • the force added to the tooth 2 becomes weak, the pain and discomfort which arise by orthodontic can be reduced.
  • the tooth 2 can be moved efficiently, the treatment period of orthodontics is shortened.
  • the orthodontic bracket 20 includes a base member 30, a shaft 40, and a cover member 50.
  • the base member 30, the shaft 40, and the cover member 50 are formed by metal processing, for example.
  • the base member 30 and the shaft 40 may be formed by press molding
  • the cover member 50 may be formed by metal powder injection molding (Metal-Injection-Molding: MIM).
  • the cover member 50 rotates around the shaft 40 and moves between a closed position indicated by a two-dot chain line in FIG. 2 and an open position indicated by a solid line in FIG.
  • the orthodontic bracket 20 is ready to receive the orthodontic wire 10.
  • the orthodontic bracket 20 can attach the orthodontic wire 10 to the orthodontic bracket 20 by rotating the cover member 50. Therefore, in the orthodontic bracket 20, for example, it is not necessary to perform an operation of binding the orthodontic wire 10 to the orthodontic bracket 20 using a ligature wire.
  • FIG. 4 is a plan view showing an example of the base member 30.
  • FIG. 5 is a front view showing an example of the base member 30.
  • FIG. 6 is a side view showing an example of the base member 30.
  • FIG. 7 is a bottom view showing an example of the base member 30.
  • FIG. 8 is a cross-sectional view showing an example of the base member 30 viewed from the direction of arrow II in FIG.
  • FIG. 9 is a cross-sectional view showing an example of the base member 30 as viewed from the direction of the arrow II-II in FIG.
  • FIG. 10 is an enlarged view showing an example of a portion A in FIG.
  • the base member 30 includes a bottom portion 31, a hook 32, and support portions 33 and 34.
  • the bottom 31 constitutes the bottom of the orthodontic bracket 20.
  • the bottom 31 has a plate shape.
  • the end of the bottom 31 in the ⁇ y direction in the drawing has a substantially arch shape with the center protruding in the direction of the arrow ⁇ y in the drawing.
  • the bottom 31 has a base surface 311 and an adhesive surface 312 on the opposite side of the base surface 311.
  • the bonding surface 312 is bonded to the lingual surface of the tooth 2 using an adhesive.
  • a plurality of recesses 35 and a plurality of recesses 36 are formed on the bonding surface 312.
  • the plurality of recesses 35 are formed to hold the adhesive.
  • the plurality of recesses 35 are arranged in a predetermined pattern.
  • the plurality of recesses 35 are arranged in a matrix.
  • the concave portions 35 of 7 rows and 3 columns are arranged at predetermined intervals.
  • the number of the recessed parts 35 is not limited to the number illustrated in FIG.
  • the number of the recesses 35 may be larger or smaller than the number illustrated in FIG.
  • the number of rows of the recesses 35 may be five and the number of columns may be two.
  • Each recess 35 has a shape in which the opening 351 is narrowed.
  • the narrowed opening is defined, for example, as a shape having a cross-sectional area wider than the opening area of the opening in at least a part of the cross section of the recess parallel to the opening surface. If it is an aspect, it will not be limited to this.
  • the recess 35 has a shape in which the opening 351 is a quadrangle, the cross section of the quadrangle is inflated, and the center of the quadrangular prism is inflated as a whole.
  • the width W1 of the opening 351 is smaller than the width W2 of the central portion of the recess 35.
  • the plurality of recesses 36 are formed to make a plurality of recesses 35.
  • a plurality of recesses 36 are formed around each recess 35.
  • four recesses 36 are formed at predetermined intervals on four sides of each recess 35.
  • only one recess 36 is formed between two adjacent recesses 35.
  • the recess 36 does not necessarily have to be formed on all four sides of the opening 351.
  • the recesses 36 may be formed only in the three sides of the opening 351, and the recesses 36 may not be formed for the remaining one.
  • the number of the recessed parts 36 is not limited to the number illustrated in FIG. The number of the recesses 36 may be larger or smaller than the number illustrated in FIG.
  • the recess 36 extends along the side of the opening 351 and has a shape in which the opening is open.
  • the recess 36 has a rectangular opening, a triangular cross section, and a shape in which a triangular prism is tilted as a whole.
  • the recess 36 is provided in such a direction as to extend along the side of the opening 351.
  • the recesses 36 aligned with the opening 351 along the arrow x direction in the figure are provided in such a direction that the height direction of the triangular prism becomes the arrow y direction in the figure.
  • the recesses 36 aligned with the opening 351 along the arrow y direction in the figure are provided in such a direction that the height direction of the triangular prism becomes the arrow x direction in the figure.
  • the adhesive surface 312 has a shape in which at least a part thereof is depressed in order to hold the adhesive.
  • the constricted shape is defined as a shape in which at least a part of the adhesive surface 312 is bonded to the surface of the tooth 2 and has a space between the reference surface along the surface of the tooth 2.
  • the adhesive surface 312 only needs to have a shape that allows the adhesive to accumulate in at least a portion of the adhesive surface 312 when it is adhered to the tooth 2 using an adhesive.
  • the cross section of the bonding surface 312 has a shape curved in the arrow z direction in the drawing. That is, the adhesive surface 312 has a shape with a depressed central portion. In this case, the edge of the bonding surface 312 contacts the tooth 2, but the central portion of the bonding surface 312 does not contact the tooth 2.
  • Support portions 33 and 34 are provided on the bottom portion 31 and support one end and the other end of the shaft 40, respectively.
  • the support portion 33 is connected to the end of the base surface 311 in the arrow x direction in the drawing
  • the support portion 34 is the end of the base surface 311 in the arrow ⁇ x direction in the drawing.
  • the support part 33 and the support part 34 are provided so as to face each other.
  • the support portions 33 and 34 both protrude in the direction away from the tooth 2.
  • the support portions 33 and 34 protrude in the arrow z direction in the drawing.
  • the support part 33 and the support part 34 are arranged with an interval corresponding to the width of the cover member 50.
  • the support portions 33 and 34 are not limited to those that support one end and the other end of the shaft 40.
  • the support portions 33 and 34 may support portions other than one end and the other end of the shaft 40. That is, the support parts 33 and 34 should just support the axis
  • the support portion 33 has a plate shape. As shown in FIG. 6, when viewed from the side, the outer edge of the support portion 33 has an arc shape.
  • the support part 34 also has the same shape as the support part 33. As shown in FIG. 5, the support portion 33 has an inner surface 331 that faces the support portion 34, and an outer surface 332 that is on the opposite side of the inner surface 331. Similarly, the support portion 34 has an inner surface 341 that faces the support portion 33, and an outer surface 342 that is on the opposite side of the inner surface 341.
  • the support portions 33 and 34 are formed with holes 333 and 343 penetrating along the axial direction, respectively.
  • the hole 333 penetrates from the inner surface 331 to the outer surface 332 along the arrow x direction in the drawing.
  • the hole 343 penetrates from the outer surface 342 to the inner surface 341 along the arrow x direction in the drawing.
  • Both holes 333 and 343 have a shape corresponding to the outer surface of the shaft 40.
  • the shaft 40 is fitted into the holes 333 and 343.
  • the holes 333 and 343 have openings 334 and 344, and open through the openings 334 and 344, respectively.
  • the opening width W3 of the openings 334 and 344 shown in FIG. 4 has a size larger than the diameter of the orthodontic wire 10. However, the opening width W3 is smaller than the diameter of the shaft 40.
  • Projections 37 and 38 are provided on the inner side surfaces 331 and 341 in order to fix the cover member 50 in the closed position, respectively.
  • the protrusions 37 and 38 protrude from the inner side surfaces 331 and 341, respectively.
  • each of the protrusions 37 and 38 has a hemispherical shape. The protrusions 37 and 38 come into contact with the cover member 50 moved to the closed position, and fix the cover member 50 in the closed position.
  • an orthodontic elastic body such as a power chain, a coil spring, or an intermaxillary rubber may be used in combination with or in place of the orthodontic wire 10.
  • the hook 32 is used to hold an orthodontic elastic body.
  • the hook 32 is provided at the root 31 side end of the tooth 2 at the bottom 31. In this example, as shown in FIG. 4, the hook 32 is provided at the end of the bottom 31 in the direction of the arrow y in the figure.
  • the hook 32 has such a shape that an elastic body for orthodontics is hooked.
  • the hook 32 has a protruding portion 321 that protrudes in the arrow x direction and the arrow -x direction in the drawing.
  • An orthodontic elastic body is hooked on the protrusion 321.
  • Notches 335 and 345 are formed at the front end of the tooth 2 in the support portions 33 and 34, respectively. Further, notches 336 and 346 are formed at the root ends of the teeth 2 in the support portions 33 and 34, respectively.
  • the notches 335, 336, 345, and 346 are used to hold an orthodontic elastic body, similar to the hook 32 described above.
  • the notches 335 and 345 are formed by the cover member 50 moved to the base surface 311 and the closed position at the ends of the support portions 33 and 34 in the direction of the arrow ⁇ y.
  • the notches 336 and 346 are formed at positions where the ends of the support portions 33 and 34 in the direction of the arrow y in the figure intersect with straight lines extending from the notches 335 and 345 in the direction of the arrow y.
  • the notches 335, 336, 345, and 346 have shapes that allow the orthodontic elastic body to be hooked.
  • the notches 335 and 345 both have a shape that extends in the direction of the arrow y in the drawing and the opening is widened.
  • the notches 336 and 346 both have a shape that extends in the direction of the arrow -y in the figure and the opening is widened.
  • An orthodontic elastic body is hooked on the notches 335, 336, 345, and 346.
  • an orthodontic elastic body has a ring at its end. A part of the ring portion is hooked on the notches 335 and 345.
  • the other portion of the ring portion facing this portion is hooked by the notches 336 and 346. Accordingly, the ring portion is fixed in a state of surrounding the support portions 33 and 34.
  • FIG. 11 is a front view showing an example of the shaft 40.
  • FIG. 12 is a side view showing an example of the shaft 40.
  • the shaft 40 supports the cover member 50 so as to be rotatable.
  • the shaft 40 has a rod-like shape extending along the axial direction.
  • the shaft 40 has a shape obtained by cutting a part of a cylinder extending along the arrow x direction in the drawing along the arrow x direction in the drawing.
  • the arrow x direction in the figure is the axial direction.
  • a groove 41 for receiving the orthodontic wire 10 is formed on the outer surface of the shaft 40.
  • the groove 41 is formed so as to extend from one end in the axial direction to the other end.
  • the groove 41 is formed to extend from one end of the shaft 40 to the other end along the arrow x direction in the drawing.
  • the groove 41 has a substantially semicircular cross section.
  • the groove 41 opens through the opening 411.
  • the opening width W ⁇ b> 4 of the opening 411 shown in FIG. 12 is larger than the diameter of the orthodontic wire 10.
  • a flat portion 42 that functions as a detent is provided on a part of the outer surface of the shaft 40.
  • the plane part 42 has a planar shape.
  • the flat portion 42 is provided so as to extend from one end of the shaft 40 to the other end along the direction of the arrow x in the drawing.
  • the plane portion 42 is provided on each of one side and the other side adjacent to the groove 41 in the circumferential direction.
  • FIG. 13 is a side view showing an example of the cover member 50.
  • FIG. 14 is a plan view showing an example of the cover member 50.
  • FIG. 15 is a cross-sectional view showing an example of the cover member 50 as viewed from the direction of arrows III-III in FIG.
  • the cover member 50 rotates around the shaft 40 to open and close the opening 411 of the groove 41.
  • the cover member 50 is provided between the support part 33 and the support part 34.
  • a part of the cover member 50 is provided between the support part 33 and the support part 34.
  • the installation mode of the cover member 50 is not limited to this. It is sufficient that at least a part of the cover member 50 is provided between the support portion 33 and the support portion 34.
  • the cover member 50 has a shape extending along the radial direction of the shaft 40 from the proximal end in the arrow y direction in the figure to the distal end in the arrow -y direction in the figure. As shown in FIG. 14, when viewed from above, the cover member 50 has a substantially T-shape.
  • the cover member 50 has a proximal end region 501, an arm region 502, and a distal end region 503.
  • the proximal end region 501 is a region including the proximal end of the cover member 50.
  • the tip region 503 is a region including the tip of the cover member 50.
  • the arm region 502 is a region between the proximal end region 501 and the distal end region 503.
  • the length from the position C2 corresponding to the axis of the cover member 50 shown in FIG. 13 to the end of the tip region 503 in the arrow y direction in the drawing is the position corresponding to the axes of the support portions 33 and 34 shown in FIG. It is larger than the length from C1 to the outermost edge that is farthest in the radial direction of the shaft 40. Accordingly, the tip region 503 is located outside the support portions 33 and 34 in the radial direction of the shaft 40.
  • the proximal end region 501 has a substantially cylindrical shape with a substantially C-shaped cross section.
  • the proximal end region 501 has a hollow portion 51 that penetrates in the axial direction.
  • the hollow part 51 penetrates the inside of the base end area
  • the hollow portion 51 has a shape corresponding to the outer peripheral surface of the shaft 40.
  • the shaft 40 passes through the hollow portion 51.
  • the hollow portion 51 has an opening 511 extending along the groove 41 and opens through the opening 511.
  • the opening 511 extends from one end of the proximal end region 501 to the other end along the arrow x direction in the drawing.
  • the opening width W ⁇ b> 5 of the opening 511 shown in FIG. 13 has a size larger than the diameter of the orthodontic wire 10. However, the opening width W5 is smaller than the outer diameter of the shaft 40.
  • the cover member 50 rotates between the closed position indicated by the two-dot chain line in FIG. 2 and the open position indicated by the solid line in FIG.
  • This open position is a position where the opening 411 of the groove 41 and the opening 511 of the hollow portion 51 overlap.
  • this closed position is a position where these openings 411 and 511 do not overlap.
  • a stopper 52 is provided on the outer surface of the proximal end region 501 in order to stop the cover member 50 at the open position.
  • the stopper 52 protrudes from the outer surface of the cover member 50.
  • the stopper 52 is provided on the outer surface of the base end region 501 at a position where it comes into contact with the base surface 311 when the cover member 50 moves to the open position.
  • the stopper 52 is provided so as to extend from one end to the other end of the cover member 50 along the arrow x direction in the drawing.
  • the arm region 502 has a substantially wedge shape. As shown in FIG. 13, when viewed from the side, the edge of the arm region 502 in the direction of arrow z in the figure is inclined so as to become lower toward the direction of arrow -y in the figure. If the arrow z direction in the figure is defined as the thickness direction, the thickness of the arm region 502 is the largest at the end in the arrow y direction in the figure and gradually decreases as it reaches the arrow -y direction in the figure.
  • the arm region 502 has a side surface 504 that faces the inner side surface 331 in the closed position, a side surface 505 that faces the inner side surface 341 in the closed position, and a bottom surface 506 that faces the base surface 311 in the closed position.
  • depressions 53 and 54 into which the protrusions 37 and 38 are inserted are formed, respectively.
  • the depressions 53 and 54 are formed at positions facing the protrusions 37 and 38 in the closed position, respectively.
  • the recesses 53 and 54 have shapes corresponding to the protrusions 37 and 38, respectively.
  • the arm region 502 has an edge portion 55 between the side surface 504 and the bottom surface 506, and has an edge portion 56 between the side surface 505 and the bottom surface 506.
  • the edges 55 and 56 contact the protrusions 37 and 38 while the cover member 50 moves from the open position to the closed position, respectively.
  • the edges 55 and 56 both have a rounded shape. In this example, the edges 55 and 56 both have a chamfered shape.
  • the tip region 503 is used when the cover member 50 is rotated.
  • the tip region 503 protrudes in the axial direction.
  • the tip region 503 protrudes in the arrow x direction and the ⁇ x direction in the drawing.
  • the tip region 503 has side surfaces 507 and 508 that intersect the axial direction, and a bottom surface 509 that faces the teeth 2 in the closed position.
  • the side surface 507 is located at the end of the tip region 503 in the direction of the arrow ⁇ x in the drawing.
  • the side surface 508 is located at the end of the tip region 503 in the direction of the arrow x in the drawing.
  • a dedicated instrument such as tweezers is used.
  • the side surfaces 507 and 508 are respectively formed with depressions 57 and 58 into which the instrument is inserted. Both indentations 57 and 58 have a shape corresponding to this instrument.
  • a depression 59 is formed on the bottom surface 509.
  • a dedicated instrument used for the operation of rotating the cover member 50 is inserted into the recess 59.
  • the depression 59 is used as an emergency instead of the depressions 57 and 58 when the depressions 57 and 58 cannot be used, for example.
  • the recess 59 is formed at the center of the bottom surface 509 so as to extend from one end to the other end of the tip region 503 along the arrow x direction in the drawing.
  • the cover member 50 is held between the support portion 33 and the support portion 34 so that the hole 343, the hollow portion 51, and the hole 333 are aligned along the arrow x direction in the drawing.
  • the shaft 40 is passed through the hole 333 from the outside along the arrow -x direction in the drawing.
  • the shaft 40 is directly passed through the hollow portion 51 along the arrow -x direction in the figure, and then fitted into the hole 343 from the inside.
  • the shaft 40 may be passed through the hole 343 from the outside along the direction of the arrow x in the drawing and fitted into the hole 333 from the inside. In this way, the orthodontic bracket 20 is assembled.
  • the shaft 40 is prevented from coming off from the openings 334 and 344.
  • the opening width W5 of the opening 511 is smaller than the outer diameter of the shaft 40, the shaft 40 is prevented from coming off from the opening 511.
  • the shaft 40 is provided with a flat surface portion 42, and the holes 333 and 343 both have shapes corresponding to the flat surface portion 42, the shaft 40 is prevented from being swung in the holes 333 and 343.
  • the orthodontic bracket 20 In the orthodontic bracket 20, holes 333 and 343 into which the shaft 40 is fitted into the support portion 33 and the support portion 34 are formed. Therefore, the orthodontic bracket 20 can be easily assembled only by fitting the shaft 40 into the holes 333 and 343.
  • FIG. 16 is a diagram illustrating an example of a method of using the orthodontic bracket 20.
  • FIG. 17 is a plan view showing an example of the orthodontic bracket 20 with the cover member 50 moved to the open position.
  • FIG. 18 is a plan view showing an example of the orthodontic bracket 20 with the cover member 50 moved to the closed position.
  • the medical staff adheres the adhesive surface 312 of the orthodontic bracket 20 to the lingual surface of the tooth 2 using an adhesive.
  • the orthodontic bracket 20 is bonded in such an orientation that the hook 32 is located at the root end of the tooth 2 and the notches 335 and 345 are located at the tip end of the tooth 2.
  • the cover member 50 is in the closed position. In the closed position, the tip of the cover member 50 is located at the tip end of the tooth 2.
  • the adhesive When the adhesive is applied to the adhesive surface 312, the adhesive enters the recess 35.
  • the adhesive As shown in FIG. 10, since the opening 351 of the recess 35 is narrowed, the adhesive is held in the recess 35. Further, as shown in FIGS. 8 and 9, since the central portion of the bonding surface 312 is depressed, the adhesive is also held in this central portion.
  • the adhesive is cured, the bonding surface 312 is bonded to the surface of the tooth 2. At this time, since the adhesive is held in the concave portion 35 and the central portion of the bonding surface 312, the adhesion force of the orthodontic bracket 20 to the teeth 2 is strengthened.
  • the medical staff inserts an instrument such as tweezers into the recess 57 or 58 and rotates the cover member 50 in the clockwise direction in the drawing.
  • an instrument such as tweezers
  • the cover member 50 is rotated to move from the closed position to the open position.
  • the stopper 52 comes into contact with the base surface 311 and the cover member 50 stops.
  • the stopper 52 since the stopper 52 is provided, rotation of the cover member 50 beyond the open position is prevented, so that the cover member 50 can be easily rotated to the open position. Further, since the cover member 50 is stopped at the open position by the stopper 52, for example, the cover member 50 may not be pressed at the open position.
  • the opening 511 of the cover member 50, the opening 334 of the support 33, and the opening 344 of the support 34 are in the direction of the arrow x in the figure. Line up along.
  • the openings 511, 334, and 344 overlap with the opening 411 of the groove 41, the groove 41 is opened to the outside through the openings 334, 344, and 511.
  • the opening width W3 of the openings 334 and 344, the opening width W4 of the opening 411, and the opening width W5 of the opening 511 are all larger than the diameter of the orthodontic wire 10.
  • the orthodontic wire 10 can be inserted into the groove 41 through the openings 511, 334, and 344.
  • the medical staff inserts the orthodontic wire 10 into the groove 41 through the openings 511, 334, and 344.
  • the medical worker rotates the cover member 50 counterclockwise in the drawing.
  • the edges 55 and 56 of the cover member 50 are in contact with the protrusions 37 and 38, respectively.
  • the edges 55 and 56 both have a rounded shape, wear and damage due to this contact are prevented.
  • the cover member 50 is rotated to move from the open position to the closed position.
  • the cover member 50 When the cover member 50 is rotated to the closed position, the protrusions 37 and 38 are inserted into the recesses 53 and 54, respectively, as shown in FIG. Thereby, the cover member 50 is fixed in the closed position. As described above, when the protrusions 37 and 38 are used for fixing the cover member 50, the fixing strength increases. Therefore, the cover member 50 rotates unintentionally to open the groove 41, and the orthodontic wire 10 Disengagement from the orthodontic bracket 20 is prevented.
  • the opening 411 of the groove 41 and the opening 511 of the cover member 50 do not overlap with each other, so that the groove 41 is closed. Thereby, the orthodontic wire 10 is held in the orthodontic bracket 20 without coming out of the groove 41.
  • the tooth is compared with the case where the bonding surface 312 does not have the concave portion 35 or the bonding surface 312 is flat.
  • the adhesive force of the orthodontic bracket 20 to 2 is strengthened.
  • the groove 41 is opened and closed by the operation of rotating the cover member 50, and the orthodontic wire 10 can be attached to the orthodontic bracket 20. Therefore, the operation
  • the orthodontic apparatus 1 is used for lingual correction, but the orthodontic apparatus 1 may be used for labial correction.
  • the orthodontic bracket 20 is bonded to the front side of the tooth 2, that is, the labial surface of the tooth 2.
  • the shape of the recess 35 of the bonding surface 312 is not limited to the shape described in the above-described embodiment.
  • the recess 35 may have another shape as long as the opening 351 is constricted.
  • the recess 35 may have a shape that gradually narrows from the bottom to the opening 351.
  • the width of the bottom of the concave portion 35 is larger than the width W1 of the central portion of the concave portion 35 shown in FIG.
  • the recess 35 may have a circular shape with an opening having a circular shape, a central portion having a square cross section, and a central portion having a circular shape as a whole.
  • the recess 35 does not necessarily have a shape in which all of the opening 351 is narrowed.
  • the recess 35 may have a shape in which at least a part of the opening 351 is narrowed.
  • the recess 35 may have a shape in which only two or three sides of the opening 351 are recessed and the remaining two or one side is widened.
  • the shape in which the opening 351 is narrowed refers to a shape in which the width of the opening 351 is smaller than the width of the other part of the recess 35.
  • the other part may be the central part of the recess 35, the bottom part, or the part having the largest width in the recess 35.
  • the recess 36 may be formed in at least one around the opening 351.
  • the plurality of recesses 35 have a shape in which the opening 351 is constricted. Only a part of the plurality of recesses 35 has a shape in which the opening 351 is narrowed, and the remaining recesses 35 may not have a shape in which the opening 351 is narrowed.
  • the orthodontic bracket 20 does not necessarily have to include all the configurations described in the above-described embodiments.
  • the orthodontic bracket 20 may not include the hook 32.
  • the recesses 53 and 54 may not be formed in the cover member 50.
  • the cover member 50 when the cover member 50 moves to the closed position, the protrusions 37 and 38 are pressed against the side surfaces 504 and 505 of the cover member 50. Thereby, the cover member 50 may be fixed in the closed position.
  • only one of the protrusions 37 and 38 may be provided.
  • the cover member 50 may be formed with any one or two of the recesses 57, 58, and 59.
  • each member of the orthodontic bracket 20 described in the above-described embodiment is merely examples, and the present invention is not limited thereto.
  • the bracket body of the orthodontic bracket 20 is configured by the base member 30, the shaft 40, and the cover member 50.
  • the configuration of the bracket body is not limited to this.
  • the bracket body may have a hole through which the orthodontic wire 10 is passed.
  • the bracket body may have a groove for receiving the orthodontic wire 10, and the orthodontic wire 10 may be tied to the bracket body using a ligature wire.
  • the bracket body may include a groove that receives the orthodontic wire 10 and a shutter that slides to open and close the groove. Thus, the bracket body may hold the orthodontic wire 10 by any method.
  • the orthodontic bracket of the present invention has an adhesive surface that is bonded to the teeth by an adhesive, and the adhesive surface has a recess, and at least a part of the opening has a narrowed shape. That's fine.

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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

La présente invention vise à améliorer la force adhésive d'un boîtier orthodontique par rapport aux dents. Ce boîtier orthodontique comprend une surface adhésive qui adhère aux dents par un adhésif. Des cavités sont formées dans la surface adhésive. Au moins certaines des cavités ont une forme avec une ouverture enfoncée.
PCT/JP2017/021007 2017-06-06 2017-06-06 Boîtier orthodontique et dispositif orthodontique WO2018225161A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/021007 WO2018225161A1 (fr) 2017-06-06 2017-06-06 Boîtier orthodontique et dispositif orthodontique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/021007 WO2018225161A1 (fr) 2017-06-06 2017-06-06 Boîtier orthodontique et dispositif orthodontique

Publications (1)

Publication Number Publication Date
WO2018225161A1 true WO2018225161A1 (fr) 2018-12-13

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PCT/JP2017/021007 WO2018225161A1 (fr) 2017-06-06 2017-06-06 Boîtier orthodontique et dispositif orthodontique

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WO (1) WO2018225161A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4371337A (en) * 1981-05-20 1983-02-01 Pletcher Erwin Carroll Orthodontic bracket
JP2000096103A (ja) * 1998-09-18 2000-04-04 Injex Corp 金属粉末射出成形品のアンダーカットの形成方法およびアンダーカットを備える金属粉末射出成形品
WO2012020810A1 (fr) * 2010-08-12 2012-02-16 デンツプライ三金株式会社 Bracket orthodontique en polyamide

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4371337A (en) * 1981-05-20 1983-02-01 Pletcher Erwin Carroll Orthodontic bracket
JP2000096103A (ja) * 1998-09-18 2000-04-04 Injex Corp 金属粉末射出成形品のアンダーカットの形成方法およびアンダーカットを備える金属粉末射出成形品
WO2012020810A1 (fr) * 2010-08-12 2012-02-16 デンツプライ三金株式会社 Bracket orthodontique en polyamide

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