Source: https://patents.google.com/patent/US20060090361A1/en
Timestamp: 2018-03-18 19:46:23
Document Index: 242752882

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US20060090361A1 - Production method of three-dimensional shape data of dental prosthesis - Google Patents
US20060090361A1
US20060090361A1 US11261534 US26153405A US2006090361A1 US 20060090361 A1 US20060090361 A1 US 20060090361A1 US 11261534 US11261534 US 11261534 US 26153405 A US26153405 A US 26153405A US 2006090361 A1 US2006090361 A1 US 2006090361A1
US11261534
US7204032B2 (en )
To provide a production method of three-dimensional shape data of a part other than an engaging portion by a three-dimensional measuring device, the engaging portion has an engaging part in a cross sectional shape other than a rotary body and is projected and/or recessed on a jawbone side, a measured object mounting tool 2 comprises a cylindrical part 2 a, a mounting part 2 b and a placing part 2 c, the mounting part 2 b positions a prolonged line of an axis of the cylindrical part 2 a in the engaging part 3 aa, the placing part 2 c aligns a pre-specified direction of the mounting part 2 b with a specified providing direction of the placing table 1 b, the center axis of the cylindrical part 2 a is aligned with Z axis, and the model of the dental prosthesis 3 is rotated around Z axis on the basis of the specified providing direction of the placing table 1 b.
Further, the followings are also found out. When the cross sectional shape of the mounting part of the measured object mounting tool has the shape where the completely same outside shape appears repeatedly for every 360 degree/n (n is a positive integer of 2 or more) , and a figure formed by n time rotations is not circular, the produced dental prosthesis can correspond to the dental prosthesis for the implant applied only one implant fixture having the general engaging portion. Further, since the engaging portion of the produced dental prosthesis has the shape having no part where remarkably strong force is applied around the center axis, the excellent dental prosthesis can be produced, so that is it preferable.
2 is a measured object mounting tool, which can be put on the upper part of the placing table 1 b on the XY table 1 c of the three-dimensional measuring device 1 with specifying the providing direction. The measured object mounting tool 2 comprises a cylindrical part 2 a, a mounting part 2 b on the upper surface side of the cylindrical part 2 a and a placing part 2 c. The mounting part 2 b has a shape for engaging with the engaging part 3 aa of the engaging portion 3 a of the model 3 of the dental prosthesis, and formed so as to position a prolonged line of the center axis T of the cylindrical part 2 a in the engaging part 3 aa. The placing part 2 c is formed and put on the placing table 1 b so as to make the center axis T of the cylindrical part 2 a to be vertical with respect to the upper surface of the XY table 1 c and to align the pre-specified direction of the mounting part 2 b with the specified providing direction of the placing table 1 b, when the lower surface of the cylindrical part 2 a is put on the placing table 1 b on the XY table 1 c.
The mounting part 2 b is provided on the upper face side of the cylindrical part 2 a of the measured object mounting tool 2, where the mounting part 2 b has the shape for engaging with the engaging part 3 aa of the engaging portion 3 a, and is formed so as to position the prolonged line of the center axis T of the cylindrical part 2 a in the engaging part 3 aa. Further, for example, when the engaging part 3 aa of the engaging portion 3 a, which is mounted to the mounting part 2 b, is recessed on the jawbone side as illustrated in FIGS. 6 and 7, the mounting part 2 b is projected so as to have the pillar shape as illustrated in FIG. 4. Further, for example, when the engaging part 3 aa of the engaging portion 3 a is projected on the jawbone side as illustrated in FIGS. 8 and 9, the mounting part 2 b is recessed so as to have the hole shape (not illustrated in the figures).
Then, the mounting tool placing step is carried out for placing the measured object mounting tool 2 having the model 3 of the dental prosthesis on the placing table 1 b.
At this time, the measured object mounting tool 2 having the model 3 of the dental prosthesis is put on the placing table 1 b, where, when the lower surface of the cylindrical part 2 a is put on the placing table 1 b on the XY table 1 c, the center axis T of the cylindrical part 2 a is vertical with respect to the upper face of the XY table 1 c, and the pre-specified direction of the mounting part 2 b is aligned with the specified providing direction of the placing table 1 b. Thus, in the model measuring step described below, the pre-specified direction of the mounting part 2 b is measured by rotating the XY table 1 c around the Z axis on the basis of the specified providing direction of the placing table 1 b, to thereby produce the three-dimensional shape data of the dental prosthesis, where the three-dimensional coordinates of the shape other than the engaging portion 3 a of the model 3 of the dental prosthesis using the Z axis as a reference axis is integrated with the pre-specified direction of the mounting part 2 b.
Then, the both axes aligning step is carried out for moving the XY table 1 c in the X and/or the Y axis directions in order to align the center axis T of the cylindrical part 2 a of the measured mounting tool 2 with the Z axis.
By the both axes aligning step, as illustrated in FIG. 5, the prolonged line of the center axis T of the cylindrical part 2 a of the measured object mounting tool 2 becomes in the state of aligning with the Z axis which is the axis of the rotation shaft of the rotary table 1 a, where the prolonged line is positioned in the engaging part 3 aa of the engaging portion 3 a of the model 3 of the dental prosthesis. Thus, in the model measuring step described below, when the XY table 1 c is rotated around the Z axis on the basis of the specified providing direction of the placing table 1 b, the model 3 of the dental prosthesis provided at the measured object mounting tool 2 is rotated around the Z axis in the engaging part 3 aa of the engaging portion 3 a. Thus, it is possible to produce the three-dimensional shape data of the dental prosthesis having the Z axis in the engaging part 3 aa of the engaging portion 3 a.
For carrying out the both axes aligning step, for example, data is inputted into the drive means moving the XY table 1 c in the X and/or Y axial directions so as to move to the position where the center axis T of the cylindrical part 2 a is aligned with the Z axis. However, it is preferable that the both axes aligning step comprises the mounting tool coordinate measuring step, the compensation value calculating step and the position compensating step. The mounting tool coordinate measuring step is for measuring the two-dimensional XY coordinates of plural points in even numbers by the measuring part 1 d of the three-dimensional measuring device 1, where the XY coordinate is positioned on the outer circumference of the cylindrical part 2 a of the measured object mounting tool 2. The compensation value calculating step is for calculating numerical total values of the X axis coordinate and Y axis coordinate of each point, dividing each total value by the number of the points to thereby obtain the XY coordinates of the center axis T of the measured object mounting tool 2 using the Z axis as the origin, calculating the difference in coordinate between the two-dimensional XY coordinates and the origin of the center axis T of the measured object mounting tool 2, and thereby obtaining the compensation value of the center axis T of the measured object mounting tool 2. The position compensating step is for moving the XY table 1 c in the X and/or Y axial directions on the basis of the compensation value, to thereby align the center axis T of the measured object mounting tool 2 with the Z axis. When the both axes aligning step comprises these steps, there are the following advantages. When the moving accuracy of the drive means is decreased with the passage of time, where the drive means moves the XY table 1 c in the X and/or Y axial directions and it becomes difficult to easily align the center axis T of the cylindrical part 2 a of the measured object mounting tool 2 with the Z axis, despite of inputting the data into the drive means to move to the position where the center axis T of the cylindrical part 2 a is aligned with the Z axis, the both axes can be aligned correctly and automatically, so that it is preferable. Further, even in the three-dimensional measuring device 1, where the moving accuracy of the drive means is not decreased, the both axes can be automatically aligned without separately inputting the data to move to the position where the center axis T of the cylindrical part 2 a of the measured object mounting tool 2 is aligned with the Z axis, so that it is preferable.
1. A production method of a three-dimensional shape data of a dental prosthesis,
where said data is for cutting a block B for cutting the dental prosthesis by an automatic cutting machine to have a same shape as that of a measured object, using a three-dimensional measuring device 1,
wherein said three-dimensional measuring device 1 comprises,
a rotary table 1 a with an axis of a rotating shaft being a Z axis,
a XY table 1 c, which have a placing table 1 b for providing a measured object mounting tool 2 fixed on the upper part thereof while specifying a providing direction, is movable in X axial and Y axial directions and arranged on the rotary table 1 a, and
a measuring part 1 d for measuring the three-dimensional coordinates of the shape of the measured object mounted on the measured object mounting tool 2 on the placing table 1 b, by one laser sensor 1 d a rotationally moving on one plane containing the Z axis at least around a desired point on the Z axis
wherein said production method comprises,
a model preparing step for preparing a model of the dental prosthesis 3, where an engaging portion 3 a is projected and/or recessed on the jawbone side and has a engaging part 3 aa having a cross sectional shape other than that of the rotary body,
a model providing step for preparing the measured object mounting tool 2 comprising a cylindrical part 2 a, a mounting part 2 b on the upper face side of the cylindrical part and a placing part 2 c, and engaging an engaging part 3 aa of an engaging potion 3 a of a model of the dental prosthesis 3 with the mounting part 2 b of the measured object mounting tool 2, where the mounting part 2 b has a shape for engaging with the engaging part 3 aa of the engaging portion 3 a of the model of the dental prosthesis 3 and formed so as to position a prolonged line of a center axis T of the cylindrical part 2 a in the engaging part 3 aa, and the placing part 2 c is formed and placed on a placing table 1 b so as to have the center axis T of the cylindrical part 2 a being vertical with respect to the upper surface of the XY table 1 c, and the pre-specified direction of the mounting part 2 b being aligned with the specified providing direction of the placing table 1 b, when the lower surface of the cylindrical part 2 a is placed on the placing table 1 b on the XY table 1 c,
a mounting tool placing step for placing the measured object mounting tool 2 having the model of the dental prosthesis 3 on the placing table 1 b,
a both axes aligning step for moving the XY table 1 c in the X and/or the Y axis directions in order to align the center axis T of the cylindrical part 2 a of the measured mounting tool with the Z axis, and
a model measuring step for rotating the XY table 1 c around the Z axis using the specified reference providing direction of the placing table 1 b and rotationally move the laser sensor 1 da, to thereby measure the three-dimensional coordinates of the shape other than the engaging portion 3 a of the model of the dental prosthesis 3 and pre-specified direction of the mounting part 2 b using the reference Z axis by the measuring part 1 d,
said three-dimensional shape data of the dental prosthesis is produced by carrying out said steps in order, where the data is for cutting the block B for cutting the dental prosthesis by the automatic cutting machine, and the block B for cutting the dental prosthesis has an engaging portion K having an approximately same shape as the engaging portion 3 a of the model of the dental prosthesis 3 beforehand.
2. The production method of the three-dimensional shape data of the dental prosthesis as claimed in claim 1,
wherein the cross sectional shape of the mounting part 2 b of the measured object mounting tool 2 has the shape where the completely same outside shape appears repeatedly for every 360 degree/n (n is a positive integer of 2 or more) around the prolonged line of the center axis T of the cylindrical part 2 a, and a figure formed by n time rotations is not circular.
3. The production method of the three-dimensional shape data of the dental prosthesis as claimed in claim 1 or 2,
wherein a three-dimensional measuring device 1 comprising an arithmetic process part is used as the three-dimensional measuring device 1, and the arithmetic process part is for arithmetic-processing of a measured value of the three-dimensional coordinates of the shape of the measured object measured by the measuring part 1 d.
4. The production method of the three-dimensional shape data of the dental prosthesis as claimed in claim 3,
wherein the arithmetic process part changes the three-dimensional coordinates of the shape other than the engaging portion 3 a of the model of the dental prosthesis 3 using the Z axis as a reference to data for displaying an image of a computer.
5. The production method of the three-dimensional shape data of the dental prosthesis as claimed in claim 2 or 3,
wherein the arithmetic process part changes the X and Y axes in the three dimensional coordinate of the shape other than the engaging portion 3 a of the model of the dental prosthesis 3 using Z axis as the reference, to the three-dimensional coordinates having new X and Y axes, where a point of the pre-specified direction of the mounting part 2 b of the measured object mounting tool 2 being orthogonally crossed with the Z axis is the origin of the new X and Y axes and the pre-specified direction of the mounting part 2 b of the measured object mounting tool 2 becomes the pre-specified direction on the coordinates indicated in new X and Y axes.
6. The production method of the three-dimensional shape data of the dental prosthesis as claimed in any one of claim 3 to 5,
wherein the arithmetic process part has a compensation function for compensating a line to a smooth continuous line, which is drawn on the basis of the three-dimensional coordinates of the shape other than the engaging portion 3 a of the model of the dental prosthesis 3 using Z axis as the reference.
7. The production method of the three-dimensional shape data of the dental prosthesis as claimed in any one of claim 1 to 6,
wherein the both axes aligning step comprises,
a mounting tool coordinate measuring step for measuring two-dimensional XY coordinates at plural points in even number by the measuring part 1 d of the three-dimensional measuring device 1, where the XY coordinates are positioned on an outer circumference of the cylindrical part 2 a of the measured object mounting tool 2,
a compensation value calculating step for calculating numerical total values of the X axis coordinate and Y axis coordinate of each point, dividing each total value by the number of the points to thereby obtain the XY coordinates of the center axis T of the measured object mounting tool 2 using the Z axis as the origin,
calculating the difference in coordinate of the two-dimensional XY coordinates and the origin of the center axis T of the measured object mounting tool 2, and
thereby obtaining the compensation value of the center axis T of the measured object mounting tool 2, and
a position compensating step for moving the XY table 1 c in the X and/or Y axial directions on the basis of the compensation value to thereby align the center axis T of the cylindrical part 2 a of the measured object mounting tool 2 with the Z axis.
8. The production method of the three-dimensional shape data of the dental prosthesis as claimed in claim 7,
wherein the mounting tool coordinate measuring step, the compensation value calculating step and the position compensating step are repeated, until the compensation value calculated by the compensation value calculating step becomes less than the minimum unit capable of moving the XY table 1 c.
US11261534 2004-10-29 2005-10-31 Production method of three-dimensional shape data of dental prosthesis Expired - Fee Related US7204032B2 (en)
JP2004315530A JP4451275B2 (en) 2004-10-29 2004-10-29 The method for manufacturing a three-dimensional shape data of the dental prosthesis
JP2004-315530 2004-10-29
US20060090361A1 true true US20060090361A1 (en) 2006-05-04
US7204032B2 US7204032B2 (en) 2007-04-17
ID=35615617
US11261534 Expired - Fee Related US7204032B2 (en) 2004-10-29 2005-10-31 Production method of three-dimensional shape data of dental prosthesis
US (1) US7204032B2 (en)
JP (1) JP4451275B2 (en)
DE (1) DE602005006932D1 (en)
EP (1) EP1652490B1 (en)
US20150160004A1 (en) * 2012-06-12 2015-06-11 Bellota Agrisolutions, S.L. Machine and method for acquiring data for measuring the twist and concavity of agricultural discs
KR101166162B1 (en) 2010-10-23 2012-07-18 이태경 Intraoral Master Model with Base for Synchronization of Coordination and the Methodology for Fabrication of Intraoral Appliance
JP5364861B1 (en) * 2013-04-26 2013-12-11 株式会社住田光学ガラス Three-dimensional information measurement device and the three-dimensional information measurement method
CN105526839B (en) * 2016-01-19 2017-12-22 昆明理工大学 A multi-measuring installation tooling equipment rotorcraft
US9823063B2 (en) * 2012-06-12 2017-11-21 Bellota Agrisolutions, S.L. Machine and method for acquiring data for measuring the twist and concavity of agricultural discs
JP4451275B2 (en) 2010-04-14 grant
EP1652490B1 (en) 2008-05-21 grant
DE602005006932D1 (en) 2008-07-03 grant
EP1652490A2 (en) 2006-05-03 application
EP1652490A3 (en) 2006-05-17 application
US7204032B2 (en) 2007-04-17 grant
JP2006126033A (en) 2006-05-18 application
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MATSUDA, YOSHINORI;SAKAMOTO, YUKI;EBIHARA, YOSHINORI;REEL/FRAME:017166/0529