WO2012107326A1 - Bracket orthodontique autoligaturant - Google Patents

Bracket orthodontique autoligaturant Download PDF

Info

Publication number
WO2012107326A1
WO2012107326A1 PCT/EP2012/051577 EP2012051577W WO2012107326A1 WO 2012107326 A1 WO2012107326 A1 WO 2012107326A1 EP 2012051577 W EP2012051577 W EP 2012051577W WO 2012107326 A1 WO2012107326 A1 WO 2012107326A1
Authority
WO
WIPO (PCT)
Prior art keywords
archwire
width
spring
bracket
bracket according
Prior art date
Application number
PCT/EP2012/051577
Other languages
German (de)
English (en)
Inventor
Christoph Von Mandach
Original Assignee
Christoph Von Mandach
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 Christoph Von Mandach filed Critical Christoph Von Mandach
Publication of WO2012107326A1 publication Critical patent/WO2012107326A1/fr

Links

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
    • A61C7/12—Brackets; Arch wires; Combinations thereof; Accessories therefor
    • A61C7/28—Securing arch wire to bracket
    • A61C7/30—Securing arch wire to bracket by resilient means; Dispensers therefor
    • 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
    • A61C7/285—Locking by rotation

Definitions

  • the present invention relates to a self-ligating orthodontic bracket consisting of a base plate having an underside adapted for attachment to a tooth and having a top from which a structure is raised having first and second console-like wings therebetween a channel extending, and wherein in the wings each two an angle enclosing contact surfaces are formed, which form an Archwire Entry for guiding an archwire, and whose cutting line is parallel to the base plate, and which further comprises an over the Archwire entry cross-spring.
  • Edge Wise technique This technique is based on the method developed by Edward H. Angle. This method is carried out with the aid of brackets which have a straight Archwire Entry and laterally have two or four wings. The archwire runs through the archway and by means of so-called ligatures, the archwire is fixed in the archway. These edge-way brackets make it possible to move the entire tooth, including the tooth root, in the jaw. Many orthodontic treatments are performed today with the Edge- Shoes or the developed straight-wire technique.
  • the applicant of the present invention has already disclosed in WO2005 / 104982 a bracket, the ArchWeb leadership revealed in contrast to the usual form, a rectangular cross-section channel, an Archwire guide with only two mutually perpendicular contact surfaces.
  • the present bracket according to the invention is based on this technique.
  • the disclosed in that application bracket caused relatively complex, difficult to produce spring or flap systems.
  • the fixation of the archwire in the Archwire Entry is usually done with lid-like systems that are pivotable about a fixed axis, as shown for example in DE 10 2007 062735 B, or by means of a clip-like system, as disclosed for example in EP 1234549 A.
  • brackets with covers are more prone to defects because their manufacture requires extremely high precision; Minimal errors in the production phase lead to fatigue fractures and high production costs.
  • brackets with hinged lids open rather than clip-like or slider-like systems.
  • the slider-like systems usually act like a wedge between bracket and archwire and therefore reduce their mobility or increase the friction forces.
  • a bracket with spring of the type mentioned which is characterized in that the spring is designed so that it embraces the Archwire in the inserted state on all sides in the inserted state, and in the area of Ar chwi re management of the Anl age on opposite sides of the Archwire, and the Archwire presses on the contact surfaces.
  • Fig. 2 shows the same bracket of Figure 1, in a view from the front, while
  • Fig. 4 shows this in a view from below.
  • Fig. 5 shows the bracket, according to the figures 1 - 4 associated spring, in a perspective view, and
  • Fig. 7 shows the spring in a view from above and Fig. 8 shows from the front.
  • Fig. 9 illustrates the inventive bracket with the spring in the assembled state
  • the bracket without the required and associated spring is designated overall by 1. This is shown alone in Figures 1 to 4, while the associated spring is generally designated 2, and is shown in the figures 5 to 8 by itself.
  • the bracket 1 will now be described in detail with reference to Figures 1 to 4.
  • the bracket includes a base plate 10 having a bottom adapted for attachment to a tooth. This underside is not visible here and may, depending on the design have a corresponding structure to improve an adhesive bond. Such structures are in many
  • this underside may have a slight curvature and be provided with rib-shaped elevations, as known, for example, from the mentioned DE 102007 062735 B.
  • a structure is formed, which has a first wing 11 and a second wing 12. These two wings are arranged mirror-symmetrically and have a console-like shape. Between the two wings 11 and 12, a channel 16 extends. This channel extends over the entire height of the bracket. In the example shown here, this channel 16 is designed substantially ramp-shaped. Accordingly, the base plate 10 is the thinnest at the top and the thickest at the bottom. This can be seen most clearly in FIG.
  • first and second wings 11, 12 two crossing the bracket bearing surfaces 13, 14 are formed. These contact surfaces together enclose an angle.
  • the intersection of the two contact surfaces 13, 14 define a section line 15.
  • the angle between the two contact surfaces 13, 14 may be arbitrary in principle. This is because the Archwire can also have any cross-sectional shape. Common are Archwire with round and rectangular cross-section. In particular, because of the widespread version of Archwire with rectangular cross-section, it makes sense to also arrange the two contact surfaces at right angles to each other. Accordingly, preferably, a first contact surface, parallel to the base plate 10 extending, arranged and designated 13, while the second contact surface 14 is perpendicular to the base plate 10. These two contact surfaces 13, 14 form the Archwire Entry 100.
  • the two wings 11, 12 are undercut in the lower area, so that here creates a kind of tunnel.
  • This tunnel 101 is clearly visible from the side.
  • rounded hook-shaped extensions which are referred to herein as gingival retention bearing beads 19, are formed by this channel 101, which projects into the wings behind the channel 101.
  • Each wing 11, 12 each has such a gingival retention bearing bead 19.
  • On both wings 11, 12 further directed towards each other retention pins 17 and 18 are formed.
  • the integrally formed on the first wing 11 retention pin is the first retention pin 17 and the molded on the second wing retention pin referred to as the second retention pin 18.
  • the per se approximately cylindrical retention pins 17, 18 are cut in the extension of the contact surfaces 13 and 14 in alignment therewith.
  • the gingival Retentinslagerwulste 19 have a spiral surface 120 which begins in the region of said channel 11 below the perpendicular to the base plate 10 extending contact surface 14, initially approximately circular, then with increasing radius to the Leading edge of the mentioned, perpendicular to the base plate 10 extending contact surface 14 extends.
  • a spiral surface 120 which begins in the region of said channel 11 below the perpendicular to the base plate 10 extending contact surface 14, initially approximately circular, then with increasing radius to the Leading edge of the mentioned, perpendicular to the base plate 10 extending contact surface 14 extends.
  • the spring is designated overall by 2.
  • the spring has a total of four sections. These sections can be seen most clearly in the side view according to FIG.
  • a first portion of the spring 2 is spirally bent and designated 20.
  • the fictitious limitation of the individual sections are indicated by crosses on the spring in this figure.
  • This first helical portion 20 of the spring is followed by a second, hook-shaped bent portion 21 of the spring 2.
  • the direction of rotation of the spirally bent portion 20 and the hook-shaped bent portion 21 of the spring are formed in opposite directions.
  • the hook-shaped bent section 21 is followed by a third, rectilinear section 22, which is finally followed by a fourth, arcuately bent section 23.
  • the fourth, arcuate portion 23 is designed such that it comes to rest approximately positively on the first, spiral-shaped portion 20 at its outermost turn.
  • the spring has zones 24, 25 and 26 with different widths. These different widths can be seen in Figures 5, 7 and 8. In FIG. 6, this would be View is not recognizable and is therefore made recognizable by different hatching. So there is a narrow zone 24 that covers the archway guide 100. This zone with the smallest width has a width which is slightly smaller than the distance between the first retention pin 17 and the second retention pin 18. Thus, this area can be pushed between these two retention pins 17, 18. This narrow zone 24 is shown dotted in FIG. 6 of the side view.
  • This narrow zone 24 extends over part of the outermost turn of the first helical section 20 and over part of the second hooked section 21 adjoining it.
  • the narrow zone 24 forms an elastic extension of the spiral spring-shaped section 20 and permits the insertion of the loose ones Spring 2 in the occlusal region of a pivoted by 180 ° position from the gingival side in the occlusal direction in the bracket and can be removed in the reverse direction of movement.
  • two zones of average width 25 are present. This average width corresponds at most to the width of the channel 16, ie the distance between the two wings 11 and 12. Technically, this width must of course be slightly smaller, so that the spring is held without jamming in this area between the wings.
  • the second zone of the same mean width, also designated 25, forms part of the first spiral
  • zones of increased width 26 are available. In FIG. 6, these zones are shown cross hatched. The width of these zones 26 with increased width have a width which is wider than the channel 16 and corresponds at most to the width of the base plate 10 of the bracket 1.
  • a first zone of increased width 26 forms the innermost portion of the first helical portion 20.
  • a second portion of an increased width zone 26 lies between the first zone 25 of medium width and the single narrow zone 24.
  • a third Increased width zone 26 formed at the end of the fourth, arcuate portion 23.
  • the zones with increased width are all curved like a channel. All three zones of increased width 26 overlap at least partially.
  • the radius of the channel in the first zone of increased width 26 corresponds to the radius of the gingival retention bearing beads 19
  • the radius of the channel of the second zone of increased width is approximately equal to the outer radius of the first channel adapted
  • the radius of the third zone increased width 26 again corresponds to the radius of the second zone with increased width, so that all three zones with increased width can come to lie practically onion-like on top of each other.
  • the spring in this area has the width of the zones of medium width 25. That is, the entire fourth arcuate portion 23 is slightly narrower is as the width of the channel 16. Also on this optional embodiment will be discussed below.
  • the first embodiment refers to ene having three zones of increased width 26. This is also shown in FIGS. 9 and 10.
  • the spring 2 is tilted 180 ° so that its upper deck area 27 runs parallel to the end position according to FIG. 9, then turns this upper deck area 27 through the channel 16 from bottom to top as far as therethrough the spring is rotated by 180 ° and the upper deck portion 27 of the spring has rotated around the first and second retention pins 17, 18 and projects beyond them so that finally the upper deck portion 27 of the spring 2 is parallel to the base plate 10 extending contact surface 14 comes to rest.
  • the third, straight-line section 22 now comes to bear against the inner side of the base plate 10 in the region of the channel 16, ie a zone of medium width 25 which is part of the second and third sections 21, 22.
  • the second zone of medium width 25, which is part of the first, helical section 20 pivots between the two wings 11 and 12 under the two retention taps 17, 18.
  • the inventive bracket can be delivered in this mounted position and attached to the corresponding teeth.
  • This bracket is suitable for both the buccal and the lingual arrangement on the teeth. Since the brackets are attached to both the upper and lower teeth, the terms “up” and “down” with respect to the bracket are always to be understood as referring to the manner of illustration in the drawing. The upper edge in the drawing always comes to lie on the patient in the occlusal direction, while the lower edge of the bracket or of the base plate 10 always comes to rest in the gingival direction. For this reason, the retention bearing beads 19 are also referred to as gingival retention bearing beads.
  • the archwire can later be introduced laterally into the archwire guide 100 or, in the tilted position, inserted between the fourth and the first area 20 and then pivot the spring.
  • the spring can now also be introduced so that the fourth, arcuate shaped portion 23 is inserted from above into the channel 16 and with slight deformation the spring 2 is guided from above over the helical surface 120 of the gingival retention bearing beads 19 until, in turn, the innermost zone of increased width 26 comes into contact with these gingival retention bearing beads.
  • the spring can also be mounted when the Archwire A already lying on the contact surfaces 13, 14 adjacent.
  • the spring 2 and the bracket 1 are supplied separately, and the orthodontist postpones the springs after attaching the brackets and laying the archwire or he can easily replace a spring. Unchanged remains that even in this case, the spring 2 completely wraps around the archwire A.
  • the archwire abuts against the abutment surfaces 13 and 14, and again at least along a line of contact with the spring 2 in the second hook-shaped portion 21 on the inside thereof.
  • the self-ligating bracket according to the invention can also be realized in a very simple manner in terms of production technology and can accordingly also be manufactured inexpensively. The same applies to the spring 2 too. Hereby, the task is solved in spite of their diversity in an optimal way.

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

L'invention concerne un bracket orthodontique autoligaturant (1), comprenant une plaque de base (10) à partir de laquelle s'élève une structure présentant une première ailette en forme ce console (11) et un seconde ailette en forme de console (12). Un canal (16) s'étend entre les ailettes (11, 12). Dans les ailettes (11, 12) sont formées deux surfaces d'appui (13, 14) enfermant chacune un angle, ces deux surfaces d'appui formant un guide de fil métallique pour arcade (100) pour le guidage d'un fil métallique pour arcade (A). Un ressort (2) est disposé à travers le guide du fil métallique pour arcade (100), ledit ressort étant configuré de façon qu'il entoure de tous côtés, à l'état inséré, dans la zone du canal (16), le fil métallique pour arcade (A), et de façon qu'il soit configuré pour s'appliquer, dans la zone du guide de fil métallique pour arcade (100), sur les côtés opposés aux surfaces d'appui (13, 14), sur le fil métallique pour arcade (A), le fil métallique pour arcade se trouvant pressé sur les surfaces d'appui (13, 14). Un premier tenon de rétention (17) est accolé sur la première ailette en forme de console (11), et un second tenon de rétention (18) est accolé sur la seconde ailette en forme de console (12). Cette construction permet d'obtenir un bracket sûr, qui ne peut pas s'ouvrir automatiquement, et qui réalise des valeurs de friction profonde entre le bracket et le fil métallique pour arcade.
PCT/EP2012/051577 2011-02-11 2012-01-31 Bracket orthodontique autoligaturant WO2012107326A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00239/11 2011-02-11
CH2392011A CH704456A2 (de) 2011-02-11 2011-02-11 Selbstligierendes kieferorthopädisches Bracket.

Publications (1)

Publication Number Publication Date
WO2012107326A1 true WO2012107326A1 (fr) 2012-08-16

Family

ID=45571519

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/051577 WO2012107326A1 (fr) 2011-02-11 2012-01-31 Bracket orthodontique autoligaturant

Country Status (2)

Country Link
CH (1) CH704456A2 (fr)
WO (1) WO2012107326A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5474445A (en) * 1994-03-07 1995-12-12 John Voudouris Self-engaging twin edge-wise orthodontic bracket with pivotal latch
DE19746487A1 (de) * 1996-10-22 1998-04-30 Hanson Gustav Herbert Selbstklemmende kieferorthopädische Klammern
EP1090604A2 (fr) * 1999-10-08 2001-04-11 Tomy Incorporated Bracket orthodontique et outil y associé
WO2005104982A1 (fr) * 2004-04-28 2005-11-10 Christoph Von Mandach Console orthodontique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5474445A (en) * 1994-03-07 1995-12-12 John Voudouris Self-engaging twin edge-wise orthodontic bracket with pivotal latch
DE19746487A1 (de) * 1996-10-22 1998-04-30 Hanson Gustav Herbert Selbstklemmende kieferorthopädische Klammern
EP1090604A2 (fr) * 1999-10-08 2001-04-11 Tomy Incorporated Bracket orthodontique et outil y associé
WO2005104982A1 (fr) * 2004-04-28 2005-11-10 Christoph Von Mandach Console orthodontique

Also Published As

Publication number Publication date
CH704456A2 (de) 2012-08-15

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