WO2015054726A1 - Dispositif et procédé orthodontique - Google Patents

Dispositif et procédé orthodontique Download PDF

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Publication number
WO2015054726A1
WO2015054726A1 PCT/AU2014/000973 AU2014000973W WO2015054726A1 WO 2015054726 A1 WO2015054726 A1 WO 2015054726A1 AU 2014000973 W AU2014000973 W AU 2014000973W WO 2015054726 A1 WO2015054726 A1 WO 2015054726A1
Authority
WO
WIPO (PCT)
Prior art keywords
teeth
appliance
blocks
jaw
aligner
Prior art date
Application number
PCT/AU2014/000973
Other languages
English (en)
Inventor
Morris RAPAPORT
Original Assignee
Rapaport Morris
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
Priority claimed from AU2013903975A external-priority patent/AU2013903975A0/en
Application filed by Rapaport Morris filed Critical Rapaport Morris
Publication of WO2015054726A1 publication Critical patent/WO2015054726A1/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
    • A61C7/36—Devices acting between upper and lower teeth
    • 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
    • A61C7/08—Mouthpiece-type retainers or positioners, e.g. for both the lower and upper arch

Definitions

  • This invention relates to a method of enabling simultaneous tooth alignment and correction of Class II malocclusion. Background to the invention
  • USA patents 6027340 and 7730891 are concerned with devices for correcting the position of the jaw.
  • USA patent 4433956 discloses an expandable appliance that is periodically adjusted.
  • USA patent 7001180 corrects malocclusions and prevents snoring.
  • sequential plastic aligners (such as Invisalign) are mainly used for straightening teeth
  • functional appliances such as Clark Twin Blocks, are used to improve jaw relationships in Class II malocllusion.
  • the present invention provides a dental appliance for correcting jaw relationships and straightening teeth at the same time which consists of an integral appliance for each of the lower and upper set of teeth said appliance for the lower set of teeth incorporating an aligner fitting over the lower teeth said aligner having a mandibular advancement block projecting above the rear teeth on each side and the appliance for the upper teeth consists of an aligner fitting over the upper teeth said aligner having a mandibular advancement block projecting below the rear teeth on each side to engage the blocks on the appliance for the lower set of teeth.
  • This invention is partly predicated on the insight that two procedures normally conducted sequentially can be combined.
  • This method incorporates mandibular advancement blocks into upper and lower sequential plastic aligners, enabling simultaneous treatment of both crooked teeth and an undershot jaw. Because the alignment of teeth can proceed together with the correction of the jaw relationship and upper dental protrusion, this approach is far more efficient than a sequential treatment approach of first correcting jaw alignment with mandibular advancement and then afterwards, straightening the teeth with sequential plastic aligners.
  • Four blocks, one in each dental quadrant in the bicuspid molar region are incorporated into the plastic aligners.
  • the blocks can be bonded onto the aligners or incorporated during the aligner manufacturing process.
  • the blocks have matching inclined planes so that they have the effect of holding the lower jaw open and forward.
  • the blocks are made so as to have an opening of approximately 3mm between the front central incisor teeth and a protrusion with the front teeth edge-to-edge.
  • the aim is for the jaw to be sufficiently open beyond the freeway space to ensure that the lower jaw cannot slip back but must stay forward because the lower block engages the upper inclined plane.
  • the ability to carry out the two procedures in parallel rather than sequentially is of greatest benefit to the patient who is usually a teenager and a time saving of the order of four months is psychologically significant.
  • the improved efficiency also reduces the number of visits required to the Dental professional providing a cost saving as well.
  • figure 1 is a schematic illustration of this invention
  • Figure 2 is a representation of a device according to this invention for use on the lower teeth
  • Figure 3 is a representation of a device according to this invention for use on the upper teeth
  • the teeth alignment devices 10 and 20 are integrally moulded with the jaw adjustment blocks 13 and 23.
  • the lower set comprises the teeth alignment appliance 10 which fits over the lower teeth and integrally moulded with this are the lower adjustment blocks 13 having a rear inclined face 15.
  • the upper set comprises the teeth alignment appliance 20 which fits over the upper teeth and integrally moulded with this are the upper adjustment blocks 23 having a forward inclined face 25.
  • the sides of the blocks 13 and 23 parallel to the teeth line extend down to thicken the plastic aligner coverage of the teeth and this improves the stability and robustness of the blocks. It is possible to form the blocks separately and adhere them to the aligners at the appropriate positions.
  • the blocks 13 and 23 are preferably made from the same polymeric material as the aligners and may be made by the same computer aided manufacturing process, method.
  • the blocks may be reinforced with same material or other suitable material without compromising the performance of the appliance.
  • Other suitable materials may be polycarbonate or polyacrylates including grades of polymethylmethacrylate.
  • the method may be by thermoforming from suitable sheets of dental thermoforming polymeric material.
  • Other suitable methods may be by casting or injection moulding. Advanced manufacturing techniques such as Stereolithography, 3D printing, Laminate object manufacturing, fused deposition modelling and laser machining may be used to form molds for the aligners.
  • the inclined planes of the faces 15 and 25 slope at approximately 70 degrees to the occlusal plane and are located in the second bicuspid region.
  • the occlusal surface of the blocks is parallel with the occlusal plane and the blocks are sufficiently hard to withstand biting forces. Sufficient tooth coloured composite attachments on the teeth provide additional retention for the appliances.
  • the blocks are incorporated into the aligners approximately five months after commencing sequential plastic aligner treatment. By then, some anterior bite opening, levelling and alignment of teeth has occurred.
  • the usual bite recordal techniques are used to record the preferred position of the jaws when the front teeth are in a preferred relationship.
  • the impression is the used to devise the appropriate block sizes.
  • the blocks are then incorporated into the plastic aligners that are prescribed for the next four months.
  • Class II elastics are attached to elastic hooks cut into the aligners to maintain the correction.
  • the elastics are stretched from the front at the top to the bottom at the back on the cheek sides and can continue the Class II correction. This reduces the usual length of jaw orthopaedic treatment because the elastics take over and the aligners keep the teeth discluded, thereby assisting the Class II correction.
  • Sequential plastic aligner treatment with incorporated bite blocks is possible at all ages but is mainly indicated while growth is occurring. It can be used in treating Class II division 1 or Class II division 2 cases because the initial aligners used in the first five months prior to incorporating the blocks can procline the upper central incisor teeth. This converts the Class II division 2 case into a Class II division 1. Not only is the simultaneous correction of teeth as well as jaw alignment more time efficient, it also saves the cost of an extra pair of oral appliances while adding only a smaller cost for the blocks. Therefore, the great advantage of incorporating jaw advancement blocks into sequential plastic aligners is treatment efficiency - because of time saving - as well as cost saving.
  • this invention provides an appliance that is easy to use and provides time saving benefits to the patient.

Abstract

La présente invention concerne un nouvel appareil dentaire comportant des blocs d'avancement mandibulaire dans des aligneurs supérieur et inférieur séquentiels en plastique, permettant le traitement simultané aussi bien des dents mal positionnées que d'une mâchoire de prognathe. Parce que l'alignement des dents peut s'effectuer conjointement avec la correction de la relation entre les mâchoires et de la prognathie dentaire supérieure, cette approche est de loin plus efficace qu'une approche séquentielle de traitement consistant en premier lieu en un alignement correcteur de la mâchoire présentant un avancement mandibulaire et puis après, en un redressement des dents avec des aligneurs séquentiels en plastique.
PCT/AU2014/000973 2013-10-15 2014-10-15 Dispositif et procédé orthodontique WO2015054726A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2013903975A AU2013903975A0 (en) 2013-10-15 A method of enabling simultaneous tooth alignment and correction of Class II malocclusion by adding inclined plane blocks to sequential plastic aligners.
AU2013903975 2013-10-15

Publications (1)

Publication Number Publication Date
WO2015054726A1 true WO2015054726A1 (fr) 2015-04-23

Family

ID=52827448

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2014/000973 WO2015054726A1 (fr) 2013-10-15 2014-10-15 Dispositif et procédé orthodontique

Country Status (1)

Country Link
WO (1) WO2015054726A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105662612A (zh) * 2016-02-29 2016-06-15 台州市立医院 一种功能性矫正器
GB2560330A (en) * 2017-03-07 2018-09-12 Archform Byte Ltd Orthodontic appliance
CN110584805A (zh) * 2019-09-20 2019-12-20 上海正雅齿科科技股份有限公司 一种颌位性凹面畸形矫治系统及其设计方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040058295A1 (en) * 2002-09-20 2004-03-25 Bergersen Earl O. System of dental appliances having various sizes and types and a method for treating malocclusions of patients of various ages without adjustments or appointments
WO2004026164A1 (fr) * 2002-09-20 2004-04-01 Ortho-Tain, Inc. Appareil dentaire et procede de traitement de malocclusions
WO2007134375A1 (fr) * 2006-05-18 2007-11-29 Darenton Holdings Pty Limited corrections de MALOCCLUSIONs dentaires
WO2008102132A1 (fr) * 2007-02-21 2008-08-28 Ortho-Pro-Teknica Limited Appareils orthodontiques

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040058295A1 (en) * 2002-09-20 2004-03-25 Bergersen Earl O. System of dental appliances having various sizes and types and a method for treating malocclusions of patients of various ages without adjustments or appointments
WO2004026164A1 (fr) * 2002-09-20 2004-04-01 Ortho-Tain, Inc. Appareil dentaire et procede de traitement de malocclusions
WO2007134375A1 (fr) * 2006-05-18 2007-11-29 Darenton Holdings Pty Limited corrections de MALOCCLUSIONs dentaires
WO2008102132A1 (fr) * 2007-02-21 2008-08-28 Ortho-Pro-Teknica Limited Appareils orthodontiques

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105662612A (zh) * 2016-02-29 2016-06-15 台州市立医院 一种功能性矫正器
GB2560330A (en) * 2017-03-07 2018-09-12 Archform Byte Ltd Orthodontic appliance
CN110584805A (zh) * 2019-09-20 2019-12-20 上海正雅齿科科技股份有限公司 一种颌位性凹面畸形矫治系统及其设计方法

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