WO2011102994A1 - Élément supérieur pour dent - Google Patents

Élément supérieur pour dent Download PDF

Info

Publication number
WO2011102994A1
WO2011102994A1 PCT/US2011/024067 US2011024067W WO2011102994A1 WO 2011102994 A1 WO2011102994 A1 WO 2011102994A1 US 2011024067 W US2011024067 W US 2011024067W WO 2011102994 A1 WO2011102994 A1 WO 2011102994A1
Authority
WO
WIPO (PCT)
Prior art keywords
tooth
tooth top
base
connecting means
top part
Prior art date
Application number
PCT/US2011/024067
Other languages
English (en)
Inventor
Robert Kabbani
Original Assignee
World Class Technology 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 World Class Technology Corporation filed Critical World Class Technology Corporation
Publication of WO2011102994A1 publication Critical patent/WO2011102994A1/fr
Priority to US13/568,594 priority Critical patent/US8807995B2/en
Priority to US13/859,988 priority patent/US9566134B2/en
Priority to US13/860,375 priority patent/US9119689B2/en
Priority to US15/076,280 priority patent/US9517112B2/en

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
    • A61C7/14—Brackets; Fixing brackets to teeth

Definitions

  • This invention relates to orthodontic appliances and in particular to orthodontic brackets having a low profile between the top of the tooth and the inner lips so as to minimize irritation.
  • brackets typically have profiles that cause irritation of the inner lip surfaces of a patient because the bracket is rectangular in cross section and its edges protrude too far above the top of the tooth.
  • Typical orthodontic bracket designs are shown in various US patents such as Wildman et al No. 5,613,850; Damon 5,466,151 and in published application no. US2004/0072117 to Farzin-Nia et al.
  • An orthodontic appliance is applied to the top surface of a tooth and includes a base portion and an upper portion, the upper portion having a recess to receive an archwire, the base portion having a cross sectional shape in the form of a semi-circle or shallow triangle so as to minimize irritation of the inner lip of a patient.
  • Figure 1 is a schematic view of a tooth correction means formed of a plurality of tooth top parts and a connecting means.
  • Figure 2 is a lateral view of a first embodiment of a tooth top part in a functional position.
  • Figure 3 is a perspective view of the tooth top part according to Figure 2.
  • Figure 4 is a schematic view of the tooth top part according to Figures 2 and 3.
  • Figure 5 is a lateral view of a second embodiment of a tooth top part in a functional position shown as solid lines and in an assembly position shown as dotted lines.
  • Figure 6 is a lateral view of a third embodiment of a tooth top part in a functional position.
  • the invention relates to a tooth top part for a tooth correction means, with a base body at which a tooth support surface is formed for being fixed at a tooth surface by bonding, and which is provided with a guide recess which is formed for receiving a connecting means for coupling neighbouring tooth top parts and which passes through the base body in spaced relationship to the tooth support surface along a guiding axis.
  • a tooth top part of this type which is also referred to as a bracket, is known from DE 20 2009 008571 Ul.
  • the known tooth top part is formed at an outward- facing surface of a tooth for being fixed by bonding, and to that end comprises a tooth support surface which is used as an adhesive surface for adhesively attaching (adhering) the tooth top part to the surface of the tooth.
  • the tooth top part is provided with a groove-type recess extending along a guiding axis and being spaced from the tooth support surface.
  • the known tooth top part comprises a substantially H-shaped cross section in a cross sectional plane normal to the guiding axis.
  • the recess in the tooth top part permits insertion of a connecting means which couples tooth top parts attached to neighbouring teeth and permits transmission of forces between the teeth.
  • the forces and, if applicable, the torques transmitted by the connecting means enable the teeth to move relative to each other and permit correction of false positioning (malocclusion) of teeth.
  • the tooth top part known from the prior art has a drawback that the H- shaped cross section, which may be approximated by a rectangular envelope (curve) in the cross sectional planet causes irritations of the mouth mucous membrane (oral mucosa) in particular at the inside of the lips. This results in reduced wearing comfort for a tooth correction means formed by a plurality of such tooth top parts.
  • the base body comprises a substantially triangular or circular section shaped cross section in a cross sectional plane normal to the guiding axis.
  • the triangular or circular section shaped cross section guarantees reduced friction during relative movements between the tooth top parts and the opposing mucous membrane.
  • these tooth top parts have a reduced overall height, which may provide a further reduction in mucous membrane irritations.
  • the height of the tooth top part in a direction normal to the tooth surface is less than 2.5 times, in particular less than 2 times, the largest edge length (for instance with a rectangular cross section) or the diameter of the connecting means.
  • the connecting means comprises a largest edge length or a diameter selected to be less than 0.5 mm, in particular less than 0.4 mm.
  • a base line of the substantially triangular or circular section shaped cross section is formed by the tooth support surface, and a mean
  • each of the outer surfaces of the base body, adjacent to the tooth support surface include acute angles, preferably less than 45 degrees, more preferably less than 35 degrees, particularly less than 25 degrees, with the tooth support surface.
  • the outer surfaces of the tooth top part are those surfaces at the base body which are in particularly intensive contact with the opposing mucous membranes of the mouth region. The smaller the selected angle between the outer surface and the tooth support surface, the greater the wearing comfort of the tooth correction means constituted by the tooth top parts. However, since reception of the connecting means is always required, the angles cannot be reduced at will.
  • the triangular cross section of the base body may be formed as an isosceles triangle having identical acute angles between the two outer surfaces and the tooth support surface.
  • the triangular cross section may be formed as a triangle at will where the acute angles included between the respective outer surface and the tooth support surface are selected differently.
  • the circular section shaped cross section may be selected as a symmetrical or asymmetrical circular section.
  • transitional regions between the outer surfaces and/or between an outer surface and the tooth support surface are formed with a rounding-off radius. This avoids sharp edges at the transitions between the outer surfaces or between the outer surface and the tooth support surface which too could give rise to unwanted mucous membrane irritations.
  • the, preferably undercut, guide recess is formed as a groove- type indentation starting from one of the outer surfaces of the base body.
  • a groove- type indentation enables comfortable and rapid insertion and, if required, removal of the preferably wire-shaped connecting means into the guide recess and from the guide recess, respectively. This is particularly true if the groove opening of the guide recess extends alongside the guiding axis of the guide recess, thus enabling insertion/removal of the connecting means crosswise/transverse to the direction of its overall extension.
  • the guide recess is formed with an undercut which, for instance, allows the connecting means to be locked within the guide recess.
  • At least one, preferably sectionally elastic, snap-on nose is formed at the base body, said snap-on nose regionally limiting the groove-type indentation and being formed for lockingly receiving the connecting means in the guide recess.
  • the snap-on nose is meant to immobilize the connecting means at the tooth top part such that, on the one hand, the latter is able to transmit the desired forces between adjacent teeth and, on the other hand, can be easily attached at the tooth top part and, if required, removed again therefrom.
  • the snap-on nose is formed as an at least sectionally elastic spring nose enabling snap-in of the connecting means and self-locking, in particular positive locking (form-locking), immobilization of the connecting means at the tooth top part.
  • the groove-type recess may also be closed using a separate locking element or a locking element integrally attached to the base body, wherein the locking element may, for instance, be shifted or swung/pivoted between a locked position and an open position.
  • the snap-on nose is formed for self-locking, in particular positive locking (form-locking), immobilization of the connecting means at the base body.
  • the connecting means is pushed into the tooth top part while being elastically deformed and, when reaching a predetermined functional position, will be immobilized solely by the resilience (elastic restoration properties) of the snap-on nose without any effort by the user.
  • the connecting means, the guide recess in the tooth top part and the snap-on nose are coordinated such that immobilization of the connecting means by positive locking is achieved.
  • the base body is made of a, preferably tooth-colored, synthetic material (plastics material).
  • plastics material plastics material.
  • the tooth top parts are formed in different colorings and/or degrees of transparency in order to allow for low contrast adaptation to the respective tooth color.
  • the groove-type indentation is formed for lockingly receiving a profiled connecting means which is formed for transmitting torsional forces between neighbouring tooth top parts.
  • a profiled connecting means which is formed for transmitting torsional forces between neighbouring tooth top parts.
  • the connecting means comprises a square or rectangular cross section which is at least partially mapped in the recess of the tooth top part in order to allow the transmission of torque between the connecting means and the tooth top part.
  • the groove-type indentation is adapted to the connecting means such that a, preferably low friction or nearly zero friction, relative movement of the connecting means with respect to the base body, in particular along/alongside the guiding axis of the recess is enabled.
  • This allows particularly rapid correction of false positioning of teeth without requiring frequent readjustment of the connecting means.
  • the mentioned coordination between the recess and the connecting means is also referred to as self-ligating, since the connecting means is free to move in the recesses of the tooth top parts in accordance with the patient's needs without requiring any additional elements such as rubber rings for immobilizing the connecting means at the tooth top parts.
  • FIG. 1 Preferred embodiments of the invention are shown in the drawings.
  • a tooth correction means 1 according to the prior art is shown in the left-hand region of Figure 1, whereas a tooth correction means according to the invention is shown in the right-hand region of Figure 1. Both tooth correction means are used in order to achieve a desired arrangement of the teeth with respect to each other.
  • the tooth correction means 1 comprises several tooth top parts which, as an example, are attached at tooth surfaces 3 of all teeth and which are coupled to each other by a connecting means 4 for instance having a wire shape.
  • the connecting means 4 enables the transmission of forces and, if required, also torques between the teeth in order to bring the teeth in a predeterminable position during orthodontic therapy.
  • the tooth top parts clearly extend further from the teeth and the wire thickness of the connecting means is clearly selected to be thicker.
  • the tooth top part 2 which is identical to the base body in the present embodiment, comprises a tooth support surface 5 by means of which it is bonded to the tooth surface 3 in a known manner.
  • the tooth support surface 5 is flanked by a first outer surface 6 and a second outer surface 7 each of which includes an acute angle 18, 19 ( Figure 4) with the tooth support surface 5. Transitional regions between the outer surfaces 6, 7 and the tooth support surface 5 are formed with a rounding-off radii 20, 21.
  • end faces 8, 9 of the tooth top part 2 are orthogonal to the outer surfaces 6, 7 and to the tooth support surface 5.
  • the end faces 8, 9 in the shown embodiment of the tooth top part 2 are parallel to a cross sectional plane identical to the drawing plane of Figs. 2 and 4.
  • a cross section of the tooth top part 2 is formed such that it is contained within a triangular envelope 11 or within a circular section shaped envelope 11a.
  • a mean perpendicular 14 of the envelope 11 is orthogonal to a base line 13 of the envelope 11, determined by the tooth support surface 5.
  • a length of the mean perpendicular 14 is less than 50 per cent, in the present example about 40 per cent, of the length of the base line 13, which results in a low profile for the tooth top part 2, thus causing less irritations of the mouth mucous membrane (not shown).
  • a recess 12 extending normally to the cross sectional plane 10 is provided with a substantially L-shape profile.
  • the tooth top part 2 is formed as a geometrically extruded component having a constant cross section normal to the cross sectional plane la throughout its length.
  • the recess 12 also extends with a constant cross section and thus, determines a guiding axis 17 coinciding with a central axis of the for instance wire-shaped connecting means 4 having a circular cross section.
  • a snap-on nose 15 and a snap-on hook 16 for immobilizing/securing the connecting means are formed in the base body 2 of the tooth top part.
  • the snap-on nose 15 is designed for locking the connecting means 4 in the shown functional position within the snap-on hook 16, thus guaranteeing a safe, positive locking (form locking) immobilization of the connecting means 4 at the tooth top part 2 crosswise/transverse to the extension of the connecting means 4.
  • both the snap-on nose 15 and the snap-on hook 16 undergo elastic deformation.
  • the snap-on hook 16 undergoes deformation in the opposite direction.
  • the recess 12 opens up a cross section enabling insertion of the connecting means 4.
  • the tooth top part is self-locking for the connecting means 4.
  • the resilience, i.e. elastic restoration forces, of the snap-on nose 15 and the snap-on hook 16 will have a non-positive locking (force locking) and positive locking (form locking) effect for forces occurring within the cross sectional plane la without requiring any additional measures to that end.
  • Both the snap-on nose 15 and the snap-on hook 16 comprise elastic regions formed as solid state joints enabling elastic pivoting into the assembly position and restoration into the functional position.
  • the snap-on hook 16 may be reinforced using an insert 22, preferably made of an elastic/resilient metal, as shown in Figure 4.
  • tooth top part 22 is provided for receiving a connecting means 24 having a rectangular cross section in the present case and which enables the transmission of torque between neighbouring tooth top parts 22.
  • the recess 32 is adapted to the connecting means 24 such that the latter engages the snap-on hook 36 via three lateral surfaces and is pressed by the snap-on nose 35 into this region of the recess 32.
  • Demounting of the connecting means 24 can be effected by holding down the snap-on nose 35 toward the tooth support surface 25 with a tool (not shown) and subsequently pivoting the connecting means 24 out of the recess 32 by performing a pivoting movement while deforming the snap-on hook 36.
  • FIG. 6 A simplified embodiment of a tooth top part 42 is shown in Figure 6.
  • the cross section of the recess 52 substantially corresponds to the cross section of the connecting means 44 and is only limited by barbed hooks 57 provided on both sides in the region of the groove opening. These barbed hooks 57 are elastically displaced when the connecting means 44 is inserted into the recess 52, and will move back into the shown position as soon as the connecting means 44 has reached the functional position.
  • the advantage of the embodiment according to Figure 6 can be considered as having no hollow spaces at the tooth top part 42 due to the
  • connecting means 44 Demounting of the connecting means 44 is preferably effected by pulling it out laterally toward the guiding axis oriented normally to the drawing plane of Figure 6.
  • the tooth top parts 2, 22, 42 shown in Figs. 2 through 6 are preferably made of a synthetic material such as a plastics material.
  • a synthetic material such as a plastics material.
  • ceramics or metal for producing the tooth top parts is possible. In doing so, it may be necessary to modify the geometries of the tooth top parts, in particular in the region of the solid state joints, in order to guarantee the desired elastic properties.
  • synthetic materials such as plastic materials or ceramic materials for the tooth top parts
  • a regional/sectional reinforcement employing metal inserts may be provided.
  • the tooth top part 2, 22, 42 enables relative displacement and/or pivoting of neighbouring teeth. Given that the tooth top part 2, 22, 42 does not have any hooks and eyelets (no "nooks and crannies"), no additional connecting elements such as rubber bands can be inserted. In order to provide for additional force application to the teeth to be corrected, additional hooks may be provided in the region of the gum line. These additional hooks, which may be attached in a structurally separated manner from the tooth top parts 2, 22, 42 at selected or all teeth and which are preferably made of synthetic material, enable additional connecting elements to be hooked up which are typically significantly shorter than the tooth top parts 2, 22, 42 and, as they are suited exclusively for hooking up additional connecting elements, can be designed in a very skinny fashion.
  • these hooks as well can be placed very inconspicuously and in particular at particularly suitable force application points on the teeth to be moved, since this will favor parallel displacement of the teeth. Due to the decoupling of the different force application systems, which are determined by the tooth top parts 2, 22, 42 on the on hand and by the additional hooks on the other hand, not only an optically inconspicuous attachment of the corresponding components for the tooth correction means with little irritation of the mouth mucous membrane, but also a particularly efficient movement of the teeth due to the advantageous selectability of the force application points can be achieved.

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 une élément supérieur pour dent destiné à un moyen (1) d'orthodontie, qui comporte un corps (2) de semelle au niveau duquel une surface (5, 25 ; 45) d'appui sur dent est formée en vue de sa fixation à une surface (3) de dent par collage, qui est muni d'un évidement (12, 32, 52) de guidage formé en vue de recevoir un moyen (4, 24, 44) de liaison servant à coupler des éléments supérieurs voisins (2, 22, 42) pour dents et qui passe à travers le corps (2) de semelle dans une position espacée par rapport à la surface d'appui (5) sur dent le long d'un axe (17) de guidage. Selon la présente invention, le corps (2) de semelle présente une section transversale (11, 11a, 31, 51) de forme sensiblement triangulaire ou circulaire dans un plan (10) de coupe transversal normal à l'axe (17) de guidage.
PCT/US2011/024067 2010-02-20 2011-02-08 Élément supérieur pour dent WO2011102994A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US13/568,594 US8807995B2 (en) 2010-02-20 2012-08-07 Tooth top part
US13/859,988 US9566134B2 (en) 2010-02-20 2013-04-10 Orthodontic applicance with radiused wire slot
US13/860,375 US9119689B2 (en) 2011-02-08 2013-04-10 Manipulator tool for low-profile bracket
US15/076,280 US9517112B2 (en) 2010-02-20 2016-03-21 Low profile bracket with elastomeric chain

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010008749.1-43 2010-02-20
DE102010008749A DE102010008749A1 (de) 2010-02-20 2010-02-20 Zahnaufsatz

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/568,594 Continuation-In-Part US8807995B2 (en) 2010-02-20 2012-08-07 Tooth top part

Publications (1)

Publication Number Publication Date
WO2011102994A1 true WO2011102994A1 (fr) 2011-08-25

Family

ID=44356602

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/024067 WO2011102994A1 (fr) 2010-02-20 2011-02-08 Élément supérieur pour dent

Country Status (2)

Country Link
DE (1) DE102010008749A1 (fr)
WO (1) WO2011102994A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10004573B2 (en) 2012-12-21 2018-06-26 Friedrich Widu Guidance element for a tooth
US11730570B2 (en) 2017-11-30 2023-08-22 Swissodont Gmbh Bracket

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200063732A (ko) * 2018-11-28 2020-06-05 주식회사 메디센 전방 치아교정 기구 및 이를 갖는 치아 교정장치

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3043007A (en) * 1959-06-02 1962-07-10 Wallshein Melvin Orthodontic brackets
US6485299B1 (en) * 1999-11-15 2002-11-26 Lingual Orthodontics, Ltd. Adapter and method for converting lingual orthodontic tie bracket into self-ligating bracket
US7033170B2 (en) * 2004-05-11 2006-04-25 Mark Andrew Cordato Orthodontic bracket and clip
US20070082315A1 (en) * 2004-10-29 2007-04-12 Sabater Alberto C Self-ligating bracket comprising lateral runners

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2558475A (en) * 1950-07-14 1951-06-26 Garfford J Broussard Apparatus for straightening teeth
JPH03146052A (ja) * 1989-11-01 1991-06-21 Sogo Shika Iryo Kenkyusho:Kk 歯科矯正用ブラケットキャップ
DE20009331U1 (de) * 2000-05-24 2000-12-21 Weiss Naumann Helgard Bracket
DE102004006317B4 (de) * 2004-02-10 2005-12-22 Autoliv Development Ab Gassack und Gssackmodul
DE102007008356B3 (de) * 2007-02-20 2008-07-31 Jahn, Ingolf, Dr. Kieferorthopädisches Bracket
DE202009008571U1 (de) 2009-06-17 2009-08-27 Bernhard Förster Gmbh Baureihe von Brackets für die Orthodontie

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3043007A (en) * 1959-06-02 1962-07-10 Wallshein Melvin Orthodontic brackets
US6485299B1 (en) * 1999-11-15 2002-11-26 Lingual Orthodontics, Ltd. Adapter and method for converting lingual orthodontic tie bracket into self-ligating bracket
US7033170B2 (en) * 2004-05-11 2006-04-25 Mark Andrew Cordato Orthodontic bracket and clip
US20070082315A1 (en) * 2004-10-29 2007-04-12 Sabater Alberto C Self-ligating bracket comprising lateral runners

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10004573B2 (en) 2012-12-21 2018-06-26 Friedrich Widu Guidance element for a tooth
US11730570B2 (en) 2017-11-30 2023-08-22 Swissodont Gmbh Bracket

Also Published As

Publication number Publication date
DE102010008749A1 (de) 2011-08-25

Similar Documents

Publication Publication Date Title
US8807995B2 (en) Tooth top part
US9119689B2 (en) Manipulator tool for low-profile bracket
US9566134B2 (en) Orthodontic applicance with radiused wire slot
US9517112B2 (en) Low profile bracket with elastomeric chain
KR102131166B1 (ko) 슬라이딩 커버를 가진 자가 결찰식 치열 교정 장치
CN109414302B (zh) 自锁正畸托槽
KR101183406B1 (ko) 자가-결찰형 치열교정용 브래킷 및 이를 배치하기 위한 장치
US7857618B2 (en) Orthodontic bracket including mechanism for reducing slot width for early torque control
EP1198206A1 (fr) Coiffe occlusale pour verrou orthodontique
WO2010083382A1 (fr) Boîtier orthodontique à auto-ligature et dispositifs de déploiement de celui-ci
US20140141384A1 (en) Self-ligating Orthodontic Appliance with Sliding Cover
JP6839710B2 (ja) 歯科矯正用セルフライゲーティングブラケット
US20150173859A1 (en) Orthodontic appliance with ligating feature
WO2011102994A1 (fr) Élément supérieur pour dent
US6280186B1 (en) Curved elastomeric orthodontic ligature
CA2963893C (fr) Appareil orthodontique dote d'une chaine elastomere
AU2016333711B2 (en) Low profile bracket with elastomeric chain
WO2017087533A1 (fr) Bracket orthodontique auto-ligaturant
CN115551442A (zh) 自锁正畸托槽
WO2015118504A1 (fr) Bracket autoligaturant avec système d'emboîtement pour clip souple passif et interactif

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11745049

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11745049

Country of ref document: EP

Kind code of ref document: A1