WO2012042547A1 - Dispositif d'expansion palatine rapide comportant une dent anti-retour - Google Patents

Dispositif d'expansion palatine rapide comportant une dent anti-retour Download PDF

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Publication number
WO2012042547A1
WO2012042547A1 PCT/IT2011/000079 IT2011000079W WO2012042547A1 WO 2012042547 A1 WO2012042547 A1 WO 2012042547A1 IT 2011000079 W IT2011000079 W IT 2011000079W WO 2012042547 A1 WO2012042547 A1 WO 2012042547A1
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WO
WIPO (PCT)
Prior art keywords
head
screw jack
jack
screw
palatal expander
Prior art date
Application number
PCT/IT2011/000079
Other languages
English (en)
Inventor
Marco Valle
Original Assignee
Lancer Italia S.R.I
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 Lancer Italia S.R.I filed Critical Lancer Italia S.R.I
Publication of WO2012042547A1 publication Critical patent/WO2012042547A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
    • A61C7/10—Devices having means to apply outwardly directed force, e.g. expanders

Definitions

  • the present invention relates to the field of orthodontic appliances and in particular to a rapid palatal expander fitted with an anti-return tooth. Review of the known art
  • the Rapid Palatal Expander is a therapy used in orthodontics to correct malocclusion of the mouth due to insufficient transversal growth of the upper jaw.
  • the therapy is carried out by temporary application to the mouth of an orthopaedic device called a "rapid palatal expander" (or disjunctor) that opens the palatine suture and consequently widens the palate to create more space between the teeth and allow the mouth to close properly.
  • RPE therapy is generally used on very young children when there is not yet fusion of the palatine suture; once synostosis has been completed, however, surgical help would be needed to give an RPE.
  • a double-screw jack with a cylindrical head from whose bases two threaded bars project in opposite directions, their ends being engaged in two nut screw blocks.
  • In the head are two diametric holes intersecting at 90° for insertion of a key fo r rotating the head by a one-quarter turn at a time; - two pins sliding in holes in the nut screw blocks, on opposite sides in relation to the head, to guide translation of the blocks in opposite directions while the screw jack is rotating;
  • molar or premolar bands at least two metal crowns, called molar or premolar bands, each fitted onto a tooth of the upper dental semi-arch and cemented to said tooth;
  • palatal expanders While the palatal expander is in place, the jack is subjected to continuous stress, mainly due to mastication, and this tends to cause the jack head to rotate in the direction opposite to that which causes expansion. In that case the screw blocks come closer together thus reducing pressure on the upper dental semi-arches. To avoid this happening palatal expanders have been devised fitted with anti-return devices.
  • WO 2006/124680 A1 is a palatal expander wherein there are four radial protuberances, set at 90° one from another, on the head of the screw jack acting as arms to activate the expander. There are therefore no diametric holes in the head and the protuberances are all inclined in the same direction so that each one has a concavity by means of which the patient can make the jack work in the correct direction of rotation.
  • the expander has two elastic slats that respectively project from the two guides on the screw blocks towards the head of the jack and which, when the expander is working, come in contact with the protuberances at their convex surface. The torque applied causes the slats to bend so that the teeth project beyond them.
  • the teeth make contact with the slats on the side of the concavity. In that case a much higher torque would be needed to bend the slats compared with that required only for the tendency of the expander to slacken while in action.
  • the slats therefore oppose rotation of the head of the jack in the direction opposite to the operative direction, acting as an anti-return device.
  • the head of the jack has four longitudinal lobes each between one hole and the next, and a slightly arched metal slat fixed transversally to the two guides of the nut screw blocks so that the concavity faces towards the head of the jack.
  • the slat is so bent that, during activation, the lobes press against it so thus further accentuating the arch.
  • the torque needed to bend the slat is greater than that for the tendency of the expander to slacken while operative, the slat prevents any undesired rotation by the head of the jack.
  • the described anti-return devices are more or less complex additional components that increase the difficulties of making the expander, difficulties that are then reflected in higher production costs.
  • Purpose of the present invention is therefore to overcome the above drawbacks and propose a rapid expander provided with anti-return means that do not require any additional components.
  • subject of the invention is a rapid palatal expander comprising:
  • a screw jack with a cylindrical head extending from the bases of which are two respective bars fixed to the head, threaded clockwise and anticlockwise that engage two respective nut screw blocks moving them in opposite directions during rotation of the head;
  • the anti-return means include a circumferential tooth projecting from the cylindrical surface of the head of the screw jack to exert pressure against said guide means, as described in claim 1 .
  • the circumferential tooth is discontinuous at two diametric holes, in the cylindrical head of the screw jack, intersecting at 90°.
  • the profile of the circumferential tooth is triangular.
  • the means for guiding the nut screw blocks include two pins engaged in holes in said nut screw blocks situated on opposite sides in relation to the holes that engage the threaded bars.
  • each pin there is a notch into which the head of the jack is partly fitted, to prevent the pins from emerging from the respective holes in the nut screw blocks, the circumferential tooth exerting pressure against the inner wall of the notch.
  • the notches extend beyond the head of the jack as far as the opposite end of the pins.
  • At least two toroidal rings of resilient material are fitted on the two threaded bars close to the head of the screw jack, each ring being compressed between the bar, onto which it is fitted, and the wall beyond the notch in the adjacent pin to prevent said pin from accidentally slipping.
  • the lengths of threaded bars onto which the rings are fitted have no threading.
  • the main advantage of the invention compared with the known art lies in there being no need for any additional anti-return means, said circumferential tooth forming an integral part of the screw jack head and, as such, being made during the same machine tool process.
  • assembly of the expander may be done in situ so that it can be further, and more easily, lengthened. In this way, whenever the jack reaches is maximum expansion, but even more is needed, dentists can reuse the molar bands, palatal arms and blocks of the palatal expander to be replaced, and assemble a new palatal expander themselves so shortening the times and reducing the costs of the operation.
  • Figure 1 is a perspective view from below of a palatal expander according to the present invention, fitted to the upper dental arch of a patient.
  • Figure 2 is an exploded perspective of the palatal expander in Figure 1 , before being fitted.
  • Figure 3 is a view from above of the central body of a double-screw jack forming part of the expander in Figure 1.
  • Figure 4 is a central cross section of the operative head of the jack in Figure 3.
  • Figure 5 is a side view of an element in Figure 2.
  • Figure 6 is a longitudinal section according to plane A-A in Figure 5.
  • Figure 7 is a view from above of another element of Figure 2.
  • Figure 8 is a partial enlargement of the palatal expander in Figure 1 .
  • Figure 9 is a cross section through plane B-B in Figure 8
  • Figure 10 is a variation realised of the palatal expander in Figure 8.
  • Detailed description of some preferred forms of realising the invention In the following description identical parts that appear in different figures may be marked with the same symbols. In describing a figure reference may be made to parts not expressly shown in that figure but in preceding figures. Scales and proportions of the various parts illustrated do not necessarily represent reality.
  • Figure 1 shows a rapid palatal expander 1 fixed to the upper dental arch_of a patient.
  • the expander is supported by two metal crowns 2, 3, called molar bands, fitted onto opposite molars in the two semi-arches and fixed to them with cement, for example, glass ionomer cement.
  • the two molar bands 2, 3 are welded at one end to two respective arched bars 4, 5, 6, 7 called palatal arms, the other end being joined at the side to two respective nut screw blocks 8, 9 of a double screw jack 10.
  • the pairs of arms 4, 5 and 6, 7 are shaped so that the nut screw blocks 8, 9 are close to the palatal mucous on the side opposite the palatine suture.
  • the double-screw jack 10 has a cylindrical head 1 1 from the bases of which two cylindrical bars, 12, 13 extend; the bars of equal length threaded clockwise and anticlockwise are fixed to the head and respectively engaged in the two nut screw blocks 8, 9 at both ends.
  • the ends of two cylindrical pins 14, 15 emerge from respective holes (hatched) in the nut screw blocks 8, 9 cut on opposite sides in relation to a central threaded hole for screwing to the threaded bars 12, 13. Pins 14, 15 guide translation of the nut screw blocks 8, 9 while the head 1 1 of the jack 10 is turning.
  • the pins 14, 15 are fitted at their ends with devices (not shown in the figures) to lock them in the position of maximum aperture to prevent disassembly of the palatal expander 1 when in action.
  • the palatal arms 4, 5 and 6, 7 can be joined to bands (not shown in the figures) that extend from crowns 2, 3 to rest on the palatal surface of the enamel of the teeth adjacent to said crowns.
  • Blocks 8, 9 can be covered with respective resin shields (not shown in the figures) that lightly touch the palatine mucous, to improve the shape of the palatine vault while the expander 1 is being worn.
  • Each of these parts of the palatal expander 1 is made of ISO 5832-9 stainless steel possessing good mechanical characteristics due to the presence of nitrogen and manganese.
  • Other types of biomedical steel can be used such as ISO 5832-1 D and ISO 5832-1 E possessing inferior mechanical characteristics but also being less costly than ISO 5832-9 steel.
  • the palatal expander can also be made of titanium, a material combining high biocompatibility with the advantage of not producing allergies and of having no adverse effect on food flavours.
  • Figure 2 shows an exploded view of the palatal expander 1 without the molar bands 2, 3 and with the palatal arms 4, 5 and 6, 7 before being bent.
  • Blocks 8 and 9 are made in a single piece, centrally to the two respective arms 4, 5 and 6, 7 aligned longitudinally.
  • Three holes 20, 21 , 22 are cut through each block 8 and 9 transversally to the arms. Hole 20, between holes 21 and 22, is threaded.
  • Pins 14 and 15 are inserted in holes 21 and 22 in the two blocks 8, 9.
  • the middle holes 20 in the two blocks 8, 9 are threaded clockwise and anticlockwise to screw in the ends of threaded bars 12, 13.
  • Two notches are respectively made in a central position in the cylindrical wall of pins 14 and 15. Pins 14, 15 are inserted into the respective holes 21 and 22 with notches 23 and 24 facing each other.
  • Figure 3 shows the head 1 1 of the screw jack 10 with the threaded bars 12, 13 that extend from its two bases. Head 1 1 and bars 12, 13 are made by turning from a single piece. The diameter of head 1 1 is obviously greater than that of the threaded bars 12, 13. There is a transversal cut 12a in threaded bar 12 at its free end so that a screwdriver can be used to screw bar 13 to block 9 while the expander
  • a circumferential tooth 27, discontinuous at orthogonal diametric holes 25, 26 projects centrally from the lateral surface of the head 10.
  • the ratio between the height of tooth 27 and the radius of the bases of head 1 1 of jack 10 is about 1/10.
  • Figure 4 shows a central cross section of the head 1 1 of jack 10 at the crest of tooth 27, where it will be seen that two diametric holes 25, 26 pass through the head 1 1 , said holes being reciprocally orthogonal and their axes intersecting at a common centre. These holes serve for insertion of a starting key (not shown in the figures) to rotate the head
  • FIG. 5 shows the nut screw block 8 joined to the palatal arms 4 and 5, aligned along the longitudinal axis, between their two ends.
  • the figure also shows that holes 20, 21 and 22 have substantially the same diameter and are at an equal distance transversally to the longitudinal axis of arms 4, 5.
  • the description given for block 8 also applies to block 9.
  • Figure 6 shows a section of the ensemble in Figure 5 along a longitudinal plane through the centres of aligned holes 20, 21 and 22 where it will be seen that the middle hole 20 is equidistant from holes 21 and 22.
  • Figure 7 shows the pin 14 (or 15) with a rectangular notch 23 (24) at its centre.
  • pin 14 (25) is used to link the two blocks 8 and 9 while not preventing them from translating.
  • Notch 23 (24) is delimitated by a longitudinal wall 30 joined orthogonally, at the two sides, to two transversal walls 31 , 32.
  • Figure 8 shows a configuration close to the maximum extension made possible by screw jack 10.
  • the ends of pins 14, 15 emerge for a short length from holes 21 , 22 in blocks 8, 9, as do the ends of the threaded bars 12, 13 from the threaded holes 20 into which they are screwed.
  • Head 1 1 partly fits into notches 23, 24 with both holes 25, 26 accessible.
  • two opposite arches, of the four in which the circumferential tooth 27 is divided by holes 25, 26, are in contact with the longitudinal walls 30 of notches 23, 24.
  • the distance between guide pins 14, 15 is such that the arches of tooth 27 exert pressure against the longitudinal walls 30 of notches 23, 24.
  • the longitudinal walls 30 of notches 23, 24 are slightly longer than the height of the cylindrical head 1 1.
  • the double screw of jack 10 is formed of the cylindrical head 1 1 with the bars 12, 13 threaded clockwise and anticlockwise aligned as from each base of the head. Pins 14, 15 are parallel to the double screw, which is equidistant from both, and whose axis is coplanar with the axis of both.
  • the palatal expander 1 is activated once a day using the key provided to make the head 1 1 do a quarter turn.
  • Direction of rotation namely that in which the nut screw blocks 8, 9 withdraw one from another, is shown by the arrows marked on blocks 8, 9 in Figure 1.
  • Figure 9 shows a cross section of the head 1 1 of pins 14, 15 in Figure 8 along plane B-B passing by the crest of tooth 2.
  • the figure brings out the fact that, with each increase of palatal expansion, the head 1 1 must necessarily rotate by a quarter turn so that, on completing the rotation, a new hole in head 1 1 is accessible for continued activity.
  • the head 1 1 is not exclusively in contact with guide pins 14, 15 during the brief moment of rotation and never when rotation is completed (and this also facilitates activation). Therefore, when active, there is always pressure between the arches of circumferential tooth 27 and the walls 30 of notches 23, 24.
  • Figure 10 illustrates a variant of the palatal expander in Figure 1.
  • the figure shows a palatal expander where, for simplicity, the nut screw blocks as well as the arms and anchoring crowns have been omitted.
  • the palatal expander includes a screw jack 33 and a cylindrical head 35 from whose bases two cylindrical bars 36, 37 of equal length extend, fixed to the head 35, threaded clockwise and anticlockwise and respectively engaged in two nut screw blocks (not seen in the figure).
  • the diameter of head 35 is greater than that of the threaded bars 36, 37 and is identical to that of head 1 1 of the expander 1 .
  • the threaded bars 36, 37 are longer than threaded bars 12, 13 and are without threading for a short length 36a, 37a starting from the respective sides of the head 35.
  • In the nut screw blocks are three aligned holes, the central one being for screwing in the respective threaded bars 36, 37 and the other two for insertion of pins 38, 39 that guide translation of the nut screw blocks and prevent them from rotating.
  • In the cylindrical wall of pins 38, 39 are two respective rectangular notches 40, 41 that extend from substantially central positions to opposite ends. Each notch 40, 41 is delimitated by a longitudinal wall 42 joined orthogonally, at one side, to a transversal wall 43.
  • Pins 38, 39 are mounted with the longitudinal walls 42 of notches 40, 41 parallel and reciprocally facing a central section at least as long as the height of head 35 which can therefore be partially included between the notches, both holes 25, 26 being accessible.
  • a configuration such as this two opposite arches of the four arches into which the circumferential tooth 27 is divided, are in contact with the longitudinal walls 42 of notches 40, 41.
  • Distance between pins 38, 39 is such that the above arches of said tooth 27 exert pressure against the longitudinal walls 42 of notches 40, 41.
  • Two pairs of silicon toroidal rings 44, 45 also known ad O-rings, are respectively fitted across the threaded bars 36, 37 at non-threaded sections 36a, 37a.
  • Thickness of the O-rings is such that the pair of O-rings 44 is compressed between threaded bar 36 and pin 39, externally to notch 41. Similarly, the pair of O-rings 45 is slightly compressed between bar 37 and pin 38, externally to notch 40.
  • the nut screw blocks in which the threaded bars 36, 37 are engaged are joined to palatal arms fixed to molar bands cemented to the teeth of the patient's upper arch.
  • the head 35 of the screw jack occupies the position described in Figure 10. In that position, the friction set up between the arches of tooth 27 and the longitudinal walls 42 of notches 40, 41 is such as to prevent undesired rotation of head 35 tending to reduce the degree of expansion achieved.
  • the palatal expansion described in Figure 10 is applied, for example, in cases where the palatal expander used on a patient has reached its maximum and greater expansion is required. When that happens, dentists usually remove the whole palatal expander, disassemble it and recover the molar bands, palatal arms and the blocks. The new expander is then assembled, this being done as follows:

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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)
  • Saccharide Compounds (AREA)

Abstract

L'invention porte sur un dispositif d'expansion palatine rapide comprenant un vérin double vis ayant une tête cylindrique comportant deux trous diamétraux qui se croisent à 90° pour l'introduction d'une clé de mise en marche. Deux vis filetées dans le sens des aiguilles d'une montre et dans le sens inverse des aiguilles d'une montre s'étendent à partir des deux bases de la tête, en prise avec deux blocs vis-écrou respectifs assemblés, par des bras palatins, à des couronnes métalliques collées sur les molaires des demi-arcs supérieurs. Deux broches passent à travers les blocs à partir de côtés opposés par rapport à la double vis et les guident dans des directions opposées durant une rotation du vérin à vis. Une dent circonférentielle fait saillie à partir de la surface cylindrique de la tête du vérin à vis, exerçant une pression contre les broches pour empêcher toute rotation non souhaitée qui pourrait réduire le degré d'expansion obtenu.
PCT/IT2011/000079 2010-09-30 2011-03-18 Dispositif d'expansion palatine rapide comportant une dent anti-retour WO2012042547A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI2010A001788 2010-09-30
ITMI2010A001788A IT1401989B1 (it) 2010-09-30 2010-09-30 Espansore rapido palatale con dentino antiritorno

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WO2012042547A1 true WO2012042547A1 (fr) 2012-04-05

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPD20130196A1 (it) * 2013-07-17 2015-01-18 Visottica Ind Spa Espansore rapido palatale
US9321697B2 (en) 2012-03-03 2016-04-26 Department of Biotechnology Ministry of Science & Technology+Jawaharlal Nehru University Recombinant nitrogen fixing microorganism and uses thereof
DE102015221550A1 (de) 2014-11-05 2016-05-12 Visottica Industrie S.P.A. Schnelle gaumennaht-erweiterungsapparatur und verfahren zu ihrer herstellung
US9737379B2 (en) 2013-07-17 2017-08-22 Visottica Industrie S.P.A. Rapid palatal expander and method for the assembly thereof
RU2631741C1 (ru) * 2016-10-17 2017-09-26 Публичное акционерное общество "Северсталь" Бетонная смесь
CN110062609A (zh) * 2016-12-02 2019-07-26 阿莱恩技术有限公司 用于使用数字模型定制快速腭扩张器的方法和设备
US11273011B2 (en) 2016-12-02 2022-03-15 Align Technology, Inc. Palatal expanders and methods of expanding a palate
JP2022522335A (ja) * 2019-02-11 2022-04-18 ベルンハルト フォースター ゲゼルシャフト ミット ベシュレンクテル ハフツング 歯科矯正用拡大ねじ
US11376101B2 (en) 2016-12-02 2022-07-05 Align Technology, Inc. Force control, stop mechanism, regulating structure of removable arch adjustment appliance
US11564777B2 (en) 2018-04-11 2023-01-31 Align Technology, Inc. Releasable palatal expanders
US11638629B2 (en) 2014-09-19 2023-05-02 Align Technology, Inc. Arch expanding appliance
US11744677B2 (en) 2014-09-19 2023-09-05 Align Technology, Inc. Arch adjustment appliance

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2193322A5 (fr) * 1972-07-19 1974-02-15 Albou Norbert
US5281133A (en) 1992-11-16 1994-01-25 Ormco Corporation Rapid palatal expansion device
WO2003071976A1 (fr) * 2002-02-22 2003-09-04 Specialty Appliances Works, Inc. Module de force mecanique orthodontique
WO2006124680A1 (fr) 2005-05-16 2006-11-23 Ahmet Ozlem Keles Dispositif d'expansion palatale et procedes
US20070275341A1 (en) 2006-05-25 2007-11-29 Hanks Stephen D Orthodontic force module

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2193322A5 (fr) * 1972-07-19 1974-02-15 Albou Norbert
US5281133A (en) 1992-11-16 1994-01-25 Ormco Corporation Rapid palatal expansion device
WO2003071976A1 (fr) * 2002-02-22 2003-09-04 Specialty Appliances Works, Inc. Module de force mecanique orthodontique
US20030207225A1 (en) 2002-02-22 2003-11-06 Huge Scott A. Orthodontic mechanical force module
WO2006124680A1 (fr) 2005-05-16 2006-11-23 Ahmet Ozlem Keles Dispositif d'expansion palatale et procedes
US20070275341A1 (en) 2006-05-25 2007-11-29 Hanks Stephen D Orthodontic force module

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9321697B2 (en) 2012-03-03 2016-04-26 Department of Biotechnology Ministry of Science & Technology+Jawaharlal Nehru University Recombinant nitrogen fixing microorganism and uses thereof
DE102014213900A1 (de) 2013-07-17 2015-01-22 Visottica Industrie S.P.A. Schnelle Gaumennaht-Erweiterungsapparatur
US9642679B2 (en) 2013-07-17 2017-05-09 Visottica Industrie S.P.A. Rapid palatal expander
US9737379B2 (en) 2013-07-17 2017-08-22 Visottica Industrie S.P.A. Rapid palatal expander and method for the assembly thereof
ITPD20130196A1 (it) * 2013-07-17 2015-01-18 Visottica Ind Spa Espansore rapido palatale
US11638629B2 (en) 2014-09-19 2023-05-02 Align Technology, Inc. Arch expanding appliance
US11744677B2 (en) 2014-09-19 2023-09-05 Align Technology, Inc. Arch adjustment appliance
DE102015221550A1 (de) 2014-11-05 2016-05-12 Visottica Industrie S.P.A. Schnelle gaumennaht-erweiterungsapparatur und verfahren zu ihrer herstellung
RU2631741C1 (ru) * 2016-10-17 2017-09-26 Публичное акционерное общество "Северсталь" Бетонная смесь
CN110062609B (zh) * 2016-12-02 2021-07-06 阿莱恩技术有限公司 用于使用数字模型定制快速腭扩张器的方法和设备
US11376101B2 (en) 2016-12-02 2022-07-05 Align Technology, Inc. Force control, stop mechanism, regulating structure of removable arch adjustment appliance
US11576754B2 (en) 2016-12-02 2023-02-14 Align Technology, Inc. Methods and apparatuses for customizing a rapid palatal expander
US11273011B2 (en) 2016-12-02 2022-03-15 Align Technology, Inc. Palatal expanders and methods of expanding a palate
CN110062609A (zh) * 2016-12-02 2019-07-26 阿莱恩技术有限公司 用于使用数字模型定制快速腭扩张器的方法和设备
US11564777B2 (en) 2018-04-11 2023-01-31 Align Technology, Inc. Releasable palatal expanders
JP2022522335A (ja) * 2019-02-11 2022-04-18 ベルンハルト フォースター ゲゼルシャフト ミット ベシュレンクテル ハフツング 歯科矯正用拡大ねじ
JP7228053B2 (ja) 2019-02-11 2023-02-22 ベルンハルト フォースター ゲゼルシャフト ミット ベシュレンクテル ハフツング 歯科矯正用拡大ねじ

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ITMI20101788A1 (it) 2012-03-31
IT1401989B1 (it) 2013-08-28

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