EP2118790A1 - Verfahren zum modellieren oder herstellen einer zahnersatzversorgung, computerlesbarer datenträger und computer - Google Patents
Verfahren zum modellieren oder herstellen einer zahnersatzversorgung, computerlesbarer datenträger und computerInfo
- Publication number
- EP2118790A1 EP2118790A1 EP08701051A EP08701051A EP2118790A1 EP 2118790 A1 EP2118790 A1 EP 2118790A1 EP 08701051 A EP08701051 A EP 08701051A EP 08701051 A EP08701051 A EP 08701051A EP 2118790 A1 EP2118790 A1 EP 2118790A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- situation
- supply
- dental prosthesis
- data
- computer
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
Classifications
-
- 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
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
Definitions
- the invention relates to a method for modeling or producing a dental prosthesis and a corresponding computer-readable data carrier and a computer.
- a dental prosthesis ensures a natural look as possible.
- veneers of bridges which have a tooth-colored hue.
- the object of the present invention is to provide an improved method for modeling a denture restoration, a corresponding computer-readable data carrier and a computer, and thus also to provide an improved denture restoration.
- the method takes into account a data record which records the form of the starting situation of the patient.
- a dental restoration one or more treatments are usually performed, in which, for example, teeth or implant posts are ground or teeth are extracted.
- the grinding of Teeth or implant posts serve to provide space and corresponding support points for a denture restoration.
- the shape of a starting situation is recorded with a data record, so that the shape of this initial situation can then be used in the modeling of the dental prosthesis supply.
- the two sets of data preferably represent the shape in three dimensions, i. a spatial image of the initial situation and / or the situation after the treatment is given.
- a rule e.g. the surface data in space will be stored in the records.
- the method is preferably a computer aided design (CAD) method.
- CAD computer aided design
- a second data set is used, which records the situation after the treatment, since with this data set a corresponding dental prosthesis supply or a part of the dental prosthesis supply can be modeled.
- the shape of a ground tooth may indicate the inner shape of a crown, bridge, primary crown, coping, prosthesis, inlay, onlay, overlay, or similar denture restorations.
- the first data set that captures the shape of the initial situation may be used to display when modeling the prosthetic restoration.
- the dataset thus serves an operator of appropriate software as a guide to where and how to mold a denture restoration.
- the representation preferably takes place in superimposition with the second data record (or a section thereof which allows enlarged representations), which reproduces the actual situation of the patient.
- an ideal situation ie, h. a dental care that provides an ideal shape in aesthetic terms for a given patient.
- a simulation of such an ideal supply or also the simulation of another supply can be displayed semitransparent and / or fade in or out in addition to or as an alternative to the output data set.
- This simulation of an (ideal) supply can be made taking into account jaw dimensions, tooth dimensions, stored dimensions and / or shapes and / or models which correspond to an ideal supply. It is preferably created automatically by the software, but may also be created and / or modified by an operator of the software.
- An ideal supply from an aesthetic point of view may e.g. such that the selectable sizes or shapes correspond to average values (of a corresponding number of people), as these shapes are generally considered aesthetically pleasing.
- the criteria of similarity with the starting situation and the ideal supply can also be used with variable weights for selecting form data records. This allows a user to easily create a denture restoration which, on the one hand, resembles the original appearance and, on the other hand, represents an aesthetic improvement, since an ideal care is at least somewhat approximated.
- modification of such a data set may be automatically performed to optimize it, for example, in size, length, width, height, or the like. Such modifications may also be made taking into account the first data set and / or a simulation of an ideal supply and / or stability considerations.
- Automatic modifications may be made taking into account stored empirical values, e.g. specify how much space is left for a dental veneer.
- a first record can be made by scanning the patient's initial situation or a model thereof.
- scanners are conceivable which scan the starting situation directly in the oral cavity of the patient, but scanners are also conceivable which scan a model thereof (for example a plaster model).
- a model thereof for example a plaster model.
- an optical scanner or a mechanical probe can be provided.
- the second data set can also be obtained directly from the patient's mouth or a model thereof.
- the method can also be performed merely by loading such records.
- scanning may be performed by a dentist or a dental technician, whereas the procedure may be performed by a dental technician or a dental prosthesis manufacturer, such as a milling center or other dentures restoration manufacturing center.
- a tomograph such as a computed tomography (CT scanner), an X-ray scanner, an NMR scanner, an optical scanner, another scanner or a mechanical probe can be used.
- CT scanner computed tomography
- X-ray scanner X-ray scanner
- NMR scanner nuclear magnetic resonance scanner
- optical scanner another scanner or a mechanical probe
- the different data sets can be sent by remote data transmission. This allows you to perform different steps in different places.
- the denture restoration can be produced by a rapid prototyping method and / or a CAM method.
- Rapid prototyping processes are those primary molding processes which preferably build up the workpiece in layers of shapeless or shape-neutral material using physical and / or chemical effects. These methods include e.g. stereolithography, selective laser sintering, laser generation, fused deposition modeling, laminated object modeling, 3-D printing, contour crafting, multi-jet modeling or a polyjet process.
- Examples of CAM processes include rapid prototyping or milling.
- the color situation of the starting situation is also detected.
- a scanner may be provided which detects the color of teeth or of gums or other.
- the color can be recorded for each tooth individually or the overall situation. Since teeth or gums usually also have color gradients, these can preferably also be detected.
- the color situation can be recorded in a spatially resolved manner.
- Such a detected color situation can be displayed together with the first data record, for example. This takes place in that a surface which reproduces the first data record is displayed correspondingly in color according to the color situation.
- the color situation can be taken into account when modeling the denture restoration.
- a desired color and / or a color design (with, for example, a color gradient) of the denture restoration can already be specified and stored during the modeling.
- the color situation is taken into account in the production of the dental prosthesis supply, or the information generated in the modeling with respect to the color is taken into account in the production of the dental prosthesis supply.
- a data record which reproduces the color situation of the initial situation can also be sent by remote data transmission, so that different method steps can be carried out at different locations by different persons.
- a modeled dental prosthesis supply in a manufacturing center for dental prosthesis supply can be prepared (for example, by a bridge construction is made) and the prepared dentures are sent to a dental technician, then the color situation is sent, so that he the veneering of z. B. bridge can make as possible with such colors that are as similar as possible to the initial situation.
- FIG. 1 shows a schematic view of a starting situation and a situation after the treatment
- FIG. 2 is a schematic representation of a computer
- FIG. 3 shows a schematic representation of data records and dental prosthesis supplies
- FIG. 4 shows different sectional views of a starting situation
- FIG. 5 shows various sectional views of a situation after a treatment
- Figure 6 is a schematic view of a superposition of two data sets.
- FIG. 1a a starting situation is shown schematically. In a gum area 6 three teeth 3, 4, 5 can be seen. This initial situation 1 corresponds to the situation that exists before the treatment for the dental prosthesis is started.
- FIG. 1b shows the state after such a treatment.
- the tooth 4 has been extracted and the teeth 3 and 5 have been ground. This leaves thus tooth stumps 3 ' , 5 ' and a modified gingival area 6 " .
- the data record 11 indicates the starting situation and the data record 12 the situation after the treatment, ie the situation that exists in order to set up or use the dental prosthesis supply.
- the two data sets are superimposed in the representation.
- the illustration in FIG. 2 is shown on the screen only schematically as a sectional view, but the representation is usually in a spatial representation on the screen.
- the starting situation see data set 11
- the initial situation can be displayed semi-transparently and / or be faded in and out so that the (as a rule) underlying "actual situation" 12 is visible.
- FIG. 2 b a simulation of an ideal supply 13 is also shown.
- the teeth have no gaps between them.
- the upper edge of the teeth is more uniform than compared to the actual situation.
- the shape of a tooth replacement prosthesis proposed by software may, for example, lie between the two lines of the data set 12 and the simulation 13 in the section in FIG. 2 b. Depending on the weighting of the ideal supply and the initial state, the proposal will be more like the ideal supply or the initial state.
- FIG. 3 a shows an example of a possible dental prosthesis supply.
- This consists of a bridge with two bridge parts 15, 19, two connectors 16, 18 and a pontic 17.
- Such bridge structures can be made of very hard materials such as ceramics, titanium or the like. You can then be blinded.
- FIGS. 4 to 6 While a bridge has been discussed in FIG. 3 as an example of a dental restoration, an artificial dentition is shown in FIGS. 4 to 6.
- the illustrated invention may be used for any type of dental prosthesis supply, such as e.g. Crowns, bridges, prostheses, inlays, onlays, overlays, copings, an artificial dentition, implants, abutments, primary crowns, secondary or tertiary constructions or the like.
- FIG. 4a shows the starting situation 1 with an indication of the position of the sectional view shown in FIG. 4b. Here the gum 6 with the molar 4 is shown.
- FIGS. 5a and 5b The condition after the treatment is shown in FIGS. 5a and 5b.
- all the teeth 3, 4, 5 were extracted, so that the gum 6 something coincides in itself and here the reference numeral 6 ' carries.
- FIG. 6 shows a data set for the gum 6 ' (solid line) together with a data record 30 shown in broken lines, which reproduces the starting situation (see FIG. 4).
- the data set 31 representing the shape of the gum 6 ' can be used to indicate the lower shape of an artificial dentition (third teeth), whereas the data set 30 can be used to model both the artificial gum and an artificial tooth ,
- the outer color of the desired dental prosthesis supply can be modeled with. This information can then be sent to a dental technician who makes a veneer for the bridge.
- the automatically generated proposal may take into account the actual situation, the initial situation (see Fig. 4a) and / or a simulated ideal situation, possibly with different weightings.
- the automatic suggestion use is made of predefined form data records. Instead of the automatic suggestion, the starting situation can also be displayed and the desired denture restoration can be modeled on a computer. The initial situation shown here serves as a guide in the modeling.
- the software is used to create a digital model of the dental prosthesis, which is subsequently used e.g. sent by remote data transmission to a CAM (Computer-Aided Manufacturing) machine that manufactures the denture restoration.
- CAM Computer-Aided Manufacturing
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- General Physics & Mathematics (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007002143A DE102007002143A1 (de) | 2007-01-15 | 2007-01-15 | Verfahren zum Modellieren oder Herstellen einer Zahnersatzversorgung, computerlesbarer Datenträger und Computer |
PCT/EP2008/000123 WO2008086969A1 (de) | 2007-01-15 | 2008-01-09 | Verfahren zum modellieren oder herstellen einer zahnersatzversorgung, computerlesbarer datenträger und computer |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2118790A1 true EP2118790A1 (de) | 2009-11-18 |
Family
ID=39322368
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08701051A Ceased EP2118790A1 (de) | 2007-01-15 | 2008-01-09 | Verfahren zum modellieren oder herstellen einer zahnersatzversorgung, computerlesbarer datenträger und computer |
Country Status (4)
Country | Link |
---|---|
US (1) | US20100106276A1 (de) |
EP (1) | EP2118790A1 (de) |
DE (1) | DE102007002143A1 (de) |
WO (1) | WO2008086969A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009043048B4 (de) * | 2009-09-28 | 2012-03-22 | Wajeeh Khan | Gebisshalterung, Anordnung von Einzelzahnmodellen und Gebisshalterung und Verfahren zur vereinfachten Übertragung einer virtuellen Zahnstellung in ein reales Gebissmodell |
EP3593754B1 (de) * | 2010-10-06 | 2023-11-29 | 3Shape A/S | Entwurf eines herausnehmbaren teilzahnersatzes mit einer doppelten krone mit einer inneren krone und einer äusseren krone |
WO2012083960A1 (en) * | 2010-12-22 | 2012-06-28 | 3Shape A/S | System and method for scanning objects being modified |
ES2551235T3 (es) | 2011-02-14 | 2015-11-17 | Ivoclar Vivadent Ag | Procedimiento para la fabricación de una pieza de restauración dental y dispositivo CAD/CAM |
EP3703606A1 (de) * | 2017-11-03 | 2020-09-09 | Advanced Crown Technology, Inc | System und verfahren zur herstellung von zahnrestaurationen |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5873721A (en) * | 1993-12-23 | 1999-02-23 | Adt Advanced Dental Technologies, Ltd. | Implant abutment systems, devices, and techniques |
US6648640B2 (en) * | 1999-11-30 | 2003-11-18 | Ora Metrix, Inc. | Interactive orthodontic care system based on intra-oral scanning of teeth |
CA2342709A1 (en) * | 2001-03-23 | 2002-09-23 | Dentalmatic Technologies Inc. | Methods for dental restoration |
AU2002367019A1 (en) * | 2001-12-21 | 2003-07-30 | Biomat Sciences, Inc. | Process of making dental restorations |
US7156661B2 (en) * | 2002-08-22 | 2007-01-02 | Align Technology, Inc. | Systems and methods for treatment analysis by teeth matching |
US7474932B2 (en) * | 2003-10-23 | 2009-01-06 | Technest Holdings, Inc. | Dental computer-aided design (CAD) methods and systems |
US20060275736A1 (en) * | 2005-04-22 | 2006-12-07 | Orthoclear Holdings, Inc. | Computer aided orthodontic treatment planning |
-
2007
- 2007-01-15 DE DE102007002143A patent/DE102007002143A1/de not_active Withdrawn
-
2008
- 2008-01-09 US US12/522,999 patent/US20100106276A1/en not_active Abandoned
- 2008-01-09 EP EP08701051A patent/EP2118790A1/de not_active Ceased
- 2008-01-09 WO PCT/EP2008/000123 patent/WO2008086969A1/de active Application Filing
Non-Patent Citations (2)
Title |
---|
MEHL A ET AL: "ERZEUGUNG VON CAD-DATENSAETZEN FUER INLAYS UND KRONEN MIT FUNKTIONELLEN KAUFLAECHEN", DEUTSCHE ZAHNAERZTLICHE ZEITSCHRIFT, CARL HANSER VERLAG, MUENCHEN, DE, vol. 52, no. 8, 1 January 1997 (1997-01-01), pages 520 - 524, XP001180080, ISSN: 0012-1029 * |
See also references of WO2008086969A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20100106276A1 (en) | 2010-04-29 |
DE102007002143A1 (de) | 2008-07-17 |
WO2008086969A1 (de) | 2008-07-24 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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Effective date: 20091215 |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: INSTITUT STRAUMANN AG |
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DAX | Request for extension of the european patent (deleted) | ||
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Effective date: 20180308 |