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WO2003057067A1 - Procede de production d'une prothese dentaire - Google Patents

Procede de production d'une prothese dentaire Download PDF

Info

Publication number
WO2003057067A1
WO2003057067A1 PCT/CH2003/000009 CH0300009W WO03057067A1 WO 2003057067 A1 WO2003057067 A1 WO 2003057067A1 CH 0300009 W CH0300009 W CH 0300009W WO 03057067 A1 WO03057067 A1 WO 03057067A1
Authority
WO
WIPO (PCT)
Prior art keywords
digitized
machining
basis
axis
tooth
Prior art date
Application number
PCT/CH2003/000009
Other languages
German (de)
English (en)
Inventor
Arnold Wohlwend
Daniel Gubler
Original Assignee
Arnold Wohlwend
Daniel Gubler
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 Arnold Wohlwend, Daniel Gubler filed Critical Arnold Wohlwend
Priority to AU2003235794A priority Critical patent/AU2003235794A1/en
Publication of WO2003057067A1 publication Critical patent/WO2003057067A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/70—Tooth crowns; Making thereof
    • A61C5/77—Methods or devices for making crowns
    • 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
    • G—PHYSICS
    • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
    • G16H20/00—ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance
    • G16H20/40—ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture

Definitions

  • the present invention relates to a method for producing a dental prosthesis according to the preamble of claims 1 and 4.
  • caps, crowns, bridges and, in some cases, machining holding bars are modeled in wax or other materials.
  • the modeled shape is digitized using a mechanical scanner, laser or other measuring systems and transferred to the CAM / CNC / NC processing program for processing.
  • the invention seeks to remedy this.
  • the object of the invention is to offer error-free replicability in a method of the type mentioned at the outset.
  • the model of a denture impression is aligned under the measuring unit in such a way that the measuring axis Z of the unit to be produced corresponds to the direction of insertion in the patient's mouth, that is to say the safe and precise production of a unique item using a generally applicable method.
  • the preparation limits which must be very precise, can be measured directly. This eliminates the need for complex, precise modeling at the preparation limits of the tooth stump;
  • the method enables the counter bite to be easily included by doing this by creating the modeling units in the articulator;
  • the intermediate webs are not bound in their shape, whereby in CAD designs the intermediate webs are usually given a round, oval, etc. shape. There- This allows you to model the optimal adaptations in terms of strength and aesthetics to every construction in the simplest way;
  • a CAD program can be dispensed with for many applications. This reduces the price for a production or measurement / construction unit and eliminates the time-consuming familiarization with CAD programs.
  • the dental technician can work with the working methods known to him.
  • FIG. 3 shows a modeling according to FIG. 2 with the introduction of machining holding bars
  • Fig. 4 caps and crowns with special measurements
  • 5 shows a first machining surface in the Z direction; 6 shows a second processing surface;
  • the model of a denture impression is first aligned under the measuring unit so that the measuring axis Z of the unit to be produced corresponds to the insertion direction in the patient's mouth.
  • a model of a denture impression with its existing ground teeth or abutments and the gum bed 1 forms the starting position.
  • gums 4 eg built up in the pontic area or, for example, the cement gap can be locally increased with varnishes.
  • the surface profile, the denture impression can thus be adapted to the requirements in a variety of ways.
  • using a mechanical scanner, laser or other systems from the optics of the The Z-axis, the relevant part of the dentition shape is digitized.
  • the point clouds or areas obtained in this way serve as the processing basis for the first processing side of the shape to be produced.
  • the obtained point clouds or areas can be cut or supplemented by computer technology if necessary, taking into account preparation margin 3 and of the ground tooth 2 or abutments.
  • FIGS. 2, 3 and 4 A second processing page emerges from FIGS. 2, 3 and 4, it being shown here how one or more of the following parts can be modeled using wax or other materials and fitted and fitted onto the existing denture model as required: - Intermediate links 5 (see Fig. 2)
  • the relevant part of the denture model which has been modified in this way, is digitized again in the same clamping using mechanical scanners, lasers or other measuring systems from the optics of the Z axis.
  • the point clouds or areas obtained in this way from the new surface of the denture impression serve as the processing basis for the second processing side of the shape to be produced.
  • the first digitized processing area can also be used directly as the second processing area.
  • the point clouds or areas obtained can be cut or supplemented using computer technology if required.
  • the first machining surface (edge profile 11 of the machining surface) is mirrored in the Z direction (ie on the xy surface) with a distance of zero and then mirrored in the Y direction (ie on the xz surface) with a distance of zero ,
  • the processing surface is now immersed in a horizontal surface, so that the lowest point of the processing surface edge 11 still lies above this horizontal surface 9.
  • This area addition is placed in the workpiece 12 to be machined, according to the available space.
  • This area addition is now processed from above with a milling cutter 10.
  • a vertical curve surface 13 is thus created along the processing surface edge 11.
  • the workpiece 12 is rotated in the X-axis by 180 degrees in the jig.
  • the resulting shift of the zero point in the coordinate system of the machining surface to the machine coordinates in the xy direction is corrected in the machine control.
  • the new machine zero point for placing the second machining surface is obtained 6 and 7 show the second machining surface as it is placed over the first in the same coordinate system, the edge profile of the machining surface being drawn further in the Z direction.
  • the wall thickness in the z-axis can be varied by moving the two processing surfaces relative to one another on the z-axis.
  • the lateral xy cement gap can be achieved by specifying the diameter of the tool for the first machining side to be smaller than effective.
  • the wall thickness of caps and crowns in the xy direction can be achieved in that the diameter of the tool for the second machining side is larger than specified.
  • the various overmeasures or undersizes can also be achieved by means of individual magnification factors for the xyz axes and / or by shifting the curves relative to one another.
  • the digitized surfaces can be three-dimensionally adjusted by individual or overall factors for the xyz axes so that they correspond to the desired final dimensions in the final state.
  • Both processing areas can be expanded and / or combined individually with CAD designs as required.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Dentistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Surgery (AREA)
  • Urology & Nephrology (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Primary Health Care (AREA)
  • Dental Prosthetics (AREA)

Abstract

L'invention concerne un procédé de production d'une prothèse dentaire au moyen d'un dispositif commandé par ordinateur. Selon ce procédé, une première surface de la forme de dentition adéquate, numérisée à partir de la perspective dans l'axe des Z, constitue la base du premier côté de formage, et une seconde surface de la forme de dentition modélisée, numérisée à partir de la perspective dans l'axe des Z, constitue la base du second côté de formage.
PCT/CH2003/000009 2002-01-14 2003-01-12 Procede de production d'une prothese dentaire WO2003057067A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003235794A AU2003235794A1 (en) 2002-01-14 2003-01-12 Method for producing a dental prosthesis

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH47/02 2002-01-14
CH472002 2002-01-14

Publications (1)

Publication Number Publication Date
WO2003057067A1 true WO2003057067A1 (fr) 2003-07-17

Family

ID=4281322

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2003/000009 WO2003057067A1 (fr) 2002-01-14 2003-01-12 Procede de production d'une prothese dentaire

Country Status (2)

Country Link
AU (1) AU2003235794A1 (fr)
WO (1) WO2003057067A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1782755A3 (fr) * 2004-06-10 2007-11-21 Aepsilon Rechteverwaltungs GmbH Procédé et dispositif destiné à la fabrication de prothèses dentaires
US7899221B2 (en) 2001-11-08 2011-03-01 Institut Straumann Ag Devices and methods for producing denture parts
US8922635B2 (en) 2000-11-08 2014-12-30 Institut Straumann Ag Surface mapping and generating devices and methods for surface mapping and surface generation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19930564A1 (de) * 1999-04-16 2000-10-19 Kaltenbach & Voigt Verfahren zur Herstellung medizinischer, zahnmedizinischer, zahntechnischer und technischer Teile aus Keramik
EP1088620A1 (fr) * 1998-05-28 2001-04-04 Kabushiki Kaisya Advance Procede et dispositif de fa onnage d'appareil de prothese et bloc pour prothese

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1088620A1 (fr) * 1998-05-28 2001-04-04 Kabushiki Kaisya Advance Procede et dispositif de fa onnage d'appareil de prothese et bloc pour prothese
DE19930564A1 (de) * 1999-04-16 2000-10-19 Kaltenbach & Voigt Verfahren zur Herstellung medizinischer, zahnmedizinischer, zahntechnischer und technischer Teile aus Keramik

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8922635B2 (en) 2000-11-08 2014-12-30 Institut Straumann Ag Surface mapping and generating devices and methods for surface mapping and surface generation
US8982201B2 (en) 2000-11-08 2015-03-17 Institut Straumann Ag Surface mapping and generating devices and methods for surface mapping and surface generation
US7899221B2 (en) 2001-11-08 2011-03-01 Institut Straumann Ag Devices and methods for producing denture parts
EP1782755A3 (fr) * 2004-06-10 2007-11-21 Aepsilon Rechteverwaltungs GmbH Procédé et dispositif destiné à la fabrication de prothèses dentaires

Also Published As

Publication number Publication date
AU2003235794A1 (en) 2003-07-24

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