Method of determining the shape of a dental technology object and apparatus for per-forming the method

A dental technology and object technology, applied in this field, can solve the problems of speed determination, inaccurate spatial coordinates, inaccurate data, etc.

Inactive Publication Date: 2007-03-21
DEGUDENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Measurements have shown that the data required to manufacture a denture to be placed or placed on a dental technical object or a segment of this dental technical object is not precise enough and has not been determined at the required speed
In addition, this is caused by an imprecise or associated extremely complex determination of the spatial coordinates specified by the position of the rotary table

Method used

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  • Method of determining the shape of a dental technology object and apparatus for per-forming the method
  • Method of determining the shape of a dental technology object and apparatus for per-forming the method
  • Method of determining the shape of a dental technology object and apparatus for per-forming the method

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Embodiment Construction

[0042] Schematic diagrams of a device for contactless shape detection of objects in dental technology, in various views and perspectives, in partial fragment form, can be extracted from these figures, where identical elements are designated by the same reference numerals, when elements Even when they are different from each other in terms of illustration but contain the same technical content, they are also denoted by the same reference numerals. In the exemplary embodiment, which can be seen from the figures, the dental technical object is a positive mold 10 , but the invention is not thereby restricted.

[0043] The plunger 10 is arranged on a holding device 12 , which can be adjusted, tilted and adjusted in height according to arrows 14 and 16 relative to a measuring table or swivel table 18 . The turntable 18 is itself rotatable about an axis 20 (arrow 22). A reference camera 24 is arranged above the rotary table 18, by means of which reference camera the rotary table 18 ...

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Abstract

The invention relates to a method and an apparatus for a non-contact, three-dimensional determination of the shape of a dental technology object ( 10 ) whereby, to determine the space coordinates of the object's surface points to be measured, a thin stripe of light projected onto the object is measured by at least two matrix cameras ( 32, 34 ) to determine two space coordinates (Z- Y-coordinate) of a coordinate system, and the third space coordinate (X coordinate) is ascertained by determining the position of the object arranged on a measuring table ( 22 ) which is rotatable about an axis of rotation ( 20 ). In order to realize the non-contact determination of the shape of a dental technology object by a simple fashion, the matrix camera is a color matrix camera with first, second and third pixels, that the matrix camera captures light in a range of wave lengths characteristic for one type of the pixels (first pixels) and the values at least of one of the other types of the pixels (second and third pixels) are analyzed to determine the two first location coordinates (Y- and Z-coordinates).

Description

technical field [0001] The invention relates to a method for the contactless three-dimensional shape detection of a dental technical object, such as a male mold or a section of the male mold, in which at least two matrix cameras are used to determine the spatial coordinates of surface points of the object to be measured Measure the light band projected on the object in order to determine the two position coordinates (Z, Y coordinates) of the coordinate system and determine the third space by detecting the position of the object on a measuring table that can be rotated about the rotation axis coordinates (X-coordinates). Furthermore, the invention relates to a device for the contactless three-dimensional shape detection of a dental technical object, such as a positive model or a section of the positive model, which device has a measuring table that captures the dental technical object, which can be rotated about an axis of rotation, for A light generating device, such as a las...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C19/04G01B21/20
CPCA61C9/0053G01B11/2522
Inventor H·布林克曼S·菲赫尔L·费尔克尔R·姚曼
Owner DEGUDENT
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