WO2015008215A1 - Système de conception et de mise en place d'une prothèse dentaire amovible - Google Patents

Système de conception et de mise en place d'une prothèse dentaire amovible Download PDF

Info

Publication number
WO2015008215A1
WO2015008215A1 PCT/IB2014/063106 IB2014063106W WO2015008215A1 WO 2015008215 A1 WO2015008215 A1 WO 2015008215A1 IB 2014063106 W IB2014063106 W IB 2014063106W WO 2015008215 A1 WO2015008215 A1 WO 2015008215A1
Authority
WO
WIPO (PCT)
Prior art keywords
impression
plaque
maxillary
patient
plate
Prior art date
Application number
PCT/IB2014/063106
Other languages
English (en)
Inventor
Valter BERTAGNON
Original Assignee
Dental Knowledge S.R.L.
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 IT001183A external-priority patent/ITMI20131183A1/it
Priority claimed from IT001184A external-priority patent/ITMI20131184A1/it
Application filed by Dental Knowledge S.R.L. filed Critical Dental Knowledge S.R.L.
Publication of WO2015008215A1 publication Critical patent/WO2015008215A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C19/00—Dental auxiliary appliances
    • A61C19/04—Measuring instruments specially adapted for dentistry
    • A61C19/05—Measuring instruments specially adapted for dentistry for determining occlusion
    • A61C19/052—Measuring instruments specially adapted for dentistry for determining occlusion with tracing appliances
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/0001—In-situ dentures; Trial or temporary dentures
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/0003—Making bridge-work, inlays, implants or the like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/0003—Making bridge-work, inlays, implants or the like
    • A61C13/0004—Computer-assisted sizing or machining of dental prostheses

Definitions

  • the present invention relates to a device and to a system used in the technique of removable dental prostheses, in particular for the design and construction of a removable total prosthesis.
  • the problem addressed by the present invention is to make available a device, and more generally a system usable in the various stages of implant dentures for a partial or total removable prosthesis as well as prosthetic technique that facilitate more precise design and the relative realization of a removable prosthesis.
  • Objects of the invention therefore are devices and kits for the design of a removable prosthesis as outlined in the appended claims, the definitions of which form an integral part of the present description .
  • Another object of the invention is a method of design and construction of a removable partial denture, more preferably a total prosthesis, which uses the kit of the invention.
  • Figure 1 is a front view of a impression plaque according to the invention.
  • Figure 2 is a front perspective view of a different impression plate according to the invention.
  • Figure 3 is a perspective view from the back of the impression plaque of figure 1 with an impression device ;
  • Figures 4 and 4A represent respectively a perspective view of the impression device of figure 3 and of a particular thereof;
  • Figure 5 is a perspective view from the back of the impression plaque of figure 2 with a device footprint
  • Figure 6 is a perspective views of the impression device of figure 5;
  • Figure 7 is a side view of the impression device of figure 5;
  • Figure 8 is a perspective view from the back of the impression plaque of figure 2 with an impression device mounted with a simulation device ;
  • Figures 9A, 9B, 9C and 9D represent possible adjustments of the simulation device of figure 8 ;
  • Figures 10A and 10B represent other possible adjustments of the simulation device of figure 8;
  • Figure 11 is a side view of different embodiments of the plaques of figures 1 and 2 installed in the oral cavity of a patient;
  • Figure 12 represents the view of figure 11, in which on a impression device is mounted a repositioning device according to the invention
  • Figure 13 is a front view of the repositioning device of figure 12 mounted in the oral cavity of the patient ;
  • Figure 14 is a perspective view from the back of a plaque having an impression device on which is mounted the repositioning device of figure 12;
  • Figure 15 is a perspective view from the back of a different embodiment of a impression plaque having a impression device according to the invention
  • Figure 16 is a perspective view from the back of a different embodiment of a impression plaque having a impression device according to the invention.
  • the invention relates to a system and a kit for the design of a removable partial denture, preferably a total prosthesis.
  • Such a system and kit includes various devices whose structure and function are described below.
  • the invention comprises a first impression plaque for the mandible and a second impression plaque 2 for the jaw of a patient which must be designed for a removable denture prosthesis.
  • the first impression plaque 1, also said mandibular impression plaque 1, has anatomical shape such as to adapt to the mandible of a patient, placing bestride of the same, and thus comprises a front portion la and two side portions lb.
  • Vestibular (ie front) impression plaque 1 comprises at least three windows 3 designed to allow discovery of a portion of the gingival mucosa when the plate is worn on the patient's mandible.
  • impression plaque 1 On the occlusal side, impression plaque 1 comprises two guides 4 symmetrically placed in correspondence of the side portions lb. As shown in figure 3, the guides 4 serve as a seat for a first impression device 10 that will be described below.
  • the second impression plaque 2 also said impression jaw plate 2 ( Figure 2) , has anatomical shape such as to adapt to the jaw and the palate of the patient, placing bestride of the jaw and adhering to the palate .
  • the impression plaque 2 thus includes a front portion 2a, side portions 2b and a central portion 2c with concave shape.
  • the second impression plaque 2 comprises at least three windows 5 designed to keep open a portion of the gingival mucosa when the plaque is worn on the patient's jaw.
  • the second impression plaque 2 On the occlusal side, the second impression plaque 2 comprises two guides 6 symmetrically placed in correspondence of the side portions 2b. As shown in figure 5, the guides 6 act as a seat for a second impression device 20 that will be described below.
  • the first and the second impression plaque 1, 2 are made of a resin and can be prepared in various standard sizes, so as to adapt to the different types and sizes of the oral cavity of a patient.
  • the plaques impression 1, 2 are made of one piece.
  • the first impression device 10 is associable in a removable way to the impression plaque mandibular 1 and in particular comprises a plate 11 of elongated shape and a length such as to fit and engage at snap with the guides 4.
  • Guides 4 are structured in such a way as to allow the introduction of the plate 11 from both vestibular and palatal side.
  • the plate 11 has a central portion in relief 12 in which a threaded through hole is made perpendicular to the plane of the plate 11.
  • a spacer member 13 which includes an upper portion 14, emerging from the hole and having ogival shape, and a threaded portion 15, intended to engage with the threading of said hole.
  • the spacer member 13 can vary its distance from the plane of the plate 11, assuming different positions of distancing.
  • the second impression device 20 can be associated in a removable manner to the plaque maxillary impression 2 and in particular comprises a plate 21 of contrast, intended to come in contact with the spacer element 13 when the two plaques 1, 2 are positioned in the oral cavity of the patient.
  • the plate 21 is insertable to snap into respective guides 6.
  • the plate 21 along the side edges 21a comprises two teeth 22 which are intended to engage with respective grooves (not visible) inside of the guides 6.
  • Guides 6 are structured in such a way as to allow the introduction of the plate 21 from both vestibular and palatal sides.
  • the plate 21 comprises, in the vicinity of the rear side 21b, an eyelet 23 that acts as a gripping means for the hand of an operator for the insertion or extraction of the impression device 20 from the plate maxillary impression 2.
  • the front face 21c of the plate 21 has a semicircular profile, so as to fit the gingival arch, and includes a support element 24 that protrudes from it both in front and superiorly.
  • the support element 24 comprises a horizontal through hole 25, which faces the front faces 24a and rear 24b of the support element, and a vertical threaded hole 26 which connects the upper face 24c of the support element 24 with the horizontal through hole 25.
  • the plates 11, 21 can be made of metallic material or a radio transparent resin, in case it is necessary to perform an X-ray impression of the oral cavity when the plates 11, 21 are inserted.
  • the system and kit of the invention also includes a simulation device 30 shown in figure 8 already mounted, through the impression device 20 on the plate for maxillary impression 2.
  • the simulation device 30 comprises a model of teeth 31 that reproduces the maxillary anterior teeth, on whose rear side (palatal side) is fixed a guide 32.
  • the guide 32 is formed by a foil folded at the top and inferiorly so as to leave an open horizontal crack.
  • the simulation device 30 further includes a slide 33 to slide horizontally within the guide 32, so that the teeth model 31 is movable in the directions of arrows A-A'.
  • the slide 33 has a trapezoidal profile in section.
  • the pin 34 is insertable into the through hole 25 of the support element 24, so that it can be adjusted forward or backward as shown by the arrows B-B 'and also to rotate about to its axis as indicated by arrow C.
  • the pin 34 is fixed in the through hole 25 via a fastening screws (not shown) inserted into the threaded hole 26, which acts as a clamp.
  • the teeth model 31 is normally made of resin and is provided in different sizes, so as to adapt both functionally and aesthetically to the oral cavity and the face of the patient.
  • the system and kit of the invention further comprises a repositioning device 40 ( Figures 12, 13 and 14), the function of which will be clarified in the following.
  • the repositioning device 40 comprises a pin 41, to one end of which are fixed perpendicularly three arms 42 whose distal ends are placed at the vertices of a triangle. In these distal ends are fixed as many spheres 43 radio-opaque material.
  • the pin 41 is insertable into the through hole 25 of the support element 24 positioned on the impression device 20 of plaque from maxillary 2.
  • a pair of side flaps 44 (a single flap 44 is visible in figure 14) which act as stop elements and embracing the support element 24, serve to keep the repositioning device 40 in its proper position, preventing the rotation.
  • the system and kit of the invention comprises impression plaques 101, 102 ( Figures 15 and 16) adapted to the gingival arches of the patient, on which there are still some teeth.
  • the impression plaques 101, 102 shown in the figures are only examples, having to be made from time to time with CAD/CAM systems depending of the remaining teeth in the oral cavity.
  • Plaque for maxillary impression 102 (figure 15) comprises, similarly to the previously described plaque 2, a front portion 102a, side portions 102b and a central portion 102c.
  • both side portions 102b are positioned the guides 106 for the introduction of the impression device 20.
  • the plaque 102 will also have one or more recesses 103 to accommodate the remaining teeth .
  • the plaque for mandible impression 101 comprises a front portion 102a and side portions 102b and recesses 103 for the remaining teeth of the patient.
  • the plaque for mandible impression 101 also includes a bridge portion 150 on which is disposed the central portion in relief 112 comprising the threaded hole for the housing of the organ spacer 13. Building the plaque 101 and the impression device 150 of only one piece allows to model and place the latter in order to avoid interference with the teeth already present in the oral cavity.
  • a first step of the method according to the invention ie the phase of adjustment of chewing, provides:
  • the reference points 60 are constituted by small semi-spheres, for example plastic material, which are adherent to the mucosa by means of adhesives skin, for example adhesives based on medical grade cyanoacrylate or polymethacrylate .
  • the digital scan can be performed by means of a scanner or a camera of the type used in dental applications .
  • the realization of the prosthesis according to the stage 12) can be made according to automated methods of milling (subtraction of material) or 3D printing (adding material) .
  • step d3 applying the impression plaques 201, 202 obtained in step d3) to the gingival arches of the patient in order to detect the impression including the reference points 60;
  • the impression dough is of the type conventionally used in dental applications.
  • the method of the invention comprises the steps of:
  • step D) designing a draft of the removable partial or total denture on the basis of the overlap obtained in step C) and the model of phase i2) .
  • a further object of the invention is a kit for the design of a removable partial or total denture comprising :
  • At least a repositioning device 40 At least a repositioning device 40;
  • a plurality of reference points 60 in the form of semi-spheres
  • an amount of dentistry adhesive is manifold.
  • the system described above while being adaptable to the traditional techniques of impression taking, allows to implement a method of digital impression in a simple and efficient way, which can lead to the all digital design of a removable total prosthesis.
  • impression devices 10, 20 can be associated in a removable manner to the respective impression plaques 1, 2 is a further important advantage. Indeed, we must prepare plaques 1, 2 in various sizes, to adapt to the various patients, and in some cases they should be tailored case by case. Conversely, being the impression devices 10, 20 removable, they can be reused with a considerable saving of costs.
  • the simulation device 30 is another important advantage, since it allows one to make easier and more accurate digital design of the prosthesis.

Landscapes

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

Abstract

La présente invention concerne en particulier un système de conception d'une prothèse totale et partielle amovible, comprenant : - une plaque de prise d'empreintes mandibulaires ayant une forme anatomique en vue de s'adapter à la mâchoire d'un patient; - une plaque de prise d'empreintes maxillaires (2), ayant une forme anatomique pour s'adapter à la mâchoire du patient, comprenant une partie avant (2a), deux parties latérales (2b) et une partie centrale (2c) ayant une forme concave; - un premier dispositif de prise d'empreintes associé à ladite plaque de prise d'empreintes mandibulaires, comprenant une plaque sur laquelle est positionnée un élément écarteur, ajustable en hauteur; un second dispositif de prise d'empreintes (20) associé à ladite plaque de prise d'empreintes maxillaires (2), comprenant une plaque (21) de contraste, destinée à venir en contact avec l'élément écarteur, caractérisé en ce que ledit système comprend un dispositif de simulation (30) des maxillaires qui comprend un modèle des dents (31) qui reproduit les dents maxillaires antérieures, ledit dispositif de simulation (30) étant associé de manière amovible au second dispositif de prise d'empreintes (20).
PCT/IB2014/063106 2013-07-15 2014-07-15 Système de conception et de mise en place d'une prothèse dentaire amovible WO2015008215A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ITMI2013A001183 2013-07-15
IT001183A ITMI20131183A1 (it) 2013-07-15 2013-07-15 Sistema per la progettazione e la realizzazione di una protesi dentale rimovibile
ITMI2013A001184 2013-07-15
IT001184A ITMI20131184A1 (it) 2013-07-15 2013-07-15 Sistema per la progettazione e la realizzazione di una protesi dentale rimovibile

Publications (1)

Publication Number Publication Date
WO2015008215A1 true WO2015008215A1 (fr) 2015-01-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2014/063106 WO2015008215A1 (fr) 2013-07-15 2014-07-15 Système de conception et de mise en place d'une prothèse dentaire amovible

Country Status (1)

Country Link
WO (1) WO2015008215A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2014366783B2 (en) * 2013-12-19 2020-01-23 Trispera Dental Inc. System and method for recording a bite of an edentulous individual
EP4018965A1 (fr) * 2020-12-24 2022-06-29 Lastruttura S.p.A. Procédé pour déterminer les taux intramaxillaires normaux statiques et dynamiques d'un patient

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2309270A (en) * 1941-04-21 1943-01-26 Opotow Nathan Dental apparatus
US2481203A (en) * 1946-11-29 1949-09-06 Maurice Y Nicole Gothic arch tracing device
US6223067B1 (en) * 1997-04-11 2001-04-24 Brainlab Med. Computersysteme Gmbh Referencing device including mouthpiece
US20060172254A1 (en) * 2005-02-01 2006-08-03 Mitsuo Shindo Occlusion correction improvement instrument and correction improvement method using the instrument
WO2009120312A1 (fr) * 2008-03-28 2009-10-01 Global Dental Impression Trays, Inc. Appareil modulaire intégré de mesure dentaire et procédé de denture

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2309270A (en) * 1941-04-21 1943-01-26 Opotow Nathan Dental apparatus
US2481203A (en) * 1946-11-29 1949-09-06 Maurice Y Nicole Gothic arch tracing device
US6223067B1 (en) * 1997-04-11 2001-04-24 Brainlab Med. Computersysteme Gmbh Referencing device including mouthpiece
US20060172254A1 (en) * 2005-02-01 2006-08-03 Mitsuo Shindo Occlusion correction improvement instrument and correction improvement method using the instrument
WO2009120312A1 (fr) * 2008-03-28 2009-10-01 Global Dental Impression Trays, Inc. Appareil modulaire intégré de mesure dentaire et procédé de denture

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
TOMOAKI MARUYAMA ET AL: "Computer-aided determination of occlusal contact points for dental 3-D CAD", MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING, SPRINGER, BERLIN, DE, vol. 44, no. 5, 12 April 2006 (2006-04-12), pages 445 - 450, XP019833985, ISSN: 1741-0444 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2014366783B2 (en) * 2013-12-19 2020-01-23 Trispera Dental Inc. System and method for recording a bite of an edentulous individual
EP4018965A1 (fr) * 2020-12-24 2022-06-29 Lastruttura S.p.A. Procédé pour déterminer les taux intramaxillaires normaux statiques et dynamiques d'un patient

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