Source: https://patents.google.com/patent/US20070015111
Timestamp: 2018-02-24 14:34:34
Document Index: 776314276

Matched Legal Cases: ['Application No. 60', 'art 510', 'art 520', 'art 510', 'arts 510', 'arts 510', 'arts 510', 'art.\n9']

US20070015111A1 - Method for manipulating a dental virtual model, method for creating physical entities based on a dental virtual model thus manipulated, and dental models thus created - Google Patents
US20070015111A1
US20070015111A1 US11349124 US34912406A US2007015111A1 US 20070015111 A1 US20070015111 A1 US 20070015111A1 US 11349124 US11349124 US 11349124 US 34912406 A US34912406 A US 34912406A US 2007015111 A1 US2007015111 A1 US 2007015111A1
US11349124
US7555403B2 (en )
This application claims the benefit of prior U.S. Provisional Patent Application No. 60/699,499, filed Jul. 15, 2005, the contents of which are hereby incorporated by reference in their entirety.
The present invention relates to a method for manipulating a virtual dental model, comprising:—
The present invention also relates to a method for manufacturing a dental model, comprising:—
FIG. 7 illustrates a typical cross-section of the virtual first model part obtaind along one of the planes in FIG. 6.
Referring to FIG. 1 and FIG. 5, in step 120 the virtual model 500 is manipulated by means of a suitable computer in order to separate a first part 510 of the virtual model representing the dental site 250, in particular the hard tissues thereof, from a second part 520 of the virtual model, typically the remainder of the model 500, and including at least the data representing the soft tissues and possibly foreign matter such as retraction wires, etc, that surround the first part 510. Thus, this step isolates the surface data corresponding to the parts of the emerging profile M, the portion S1 of finish line S and preparation P that are not obscured by soft tissue or foreign objects including, for example, saliva, blood, lubrication fluid, debris and so on. This step may be performed manually with a computer, typically interactively, by a user, by means of suitable graphics software, for example, that display model 500, and an interface such as a mouse, keyboard, and so on, for example. The user may visually identify a demarcation profile D (FIGS. 4 and 5) that separates model parts 510 and 520, and for this purpose the model 500 as displayed may be manipulated and viewed at any attitude, rotational angle, magnification etc. as desired. Suitable software for manipulating a virtual model in this manner are well known in the art wnd will not be described further herein. Then, the user virtually marks a number of points on the displayed model 500 which are converted by the computer into corresponding 3-dimensional coordinates of the demarcation profile, and suitable interpolation between points completes the definition of the demarcation profile D. Then, the computer can divide the model 500 along profile D into model parts 510 and 520.
Alternatively, and particularly when the virtual model 500 also comprises color data corresponding to the topographical data, the color differences between the relatively white hard dental surfaces of the dental site 250 and the relatively pink/red gum tissue and/or the retractor wire or other foreign matter, may be used to separate the model 500 into model parts 510 and 520 in an automated manner. Examples of such methods are disclosed in co-pending application entitled “METHOD FOR PROVIDING DATA ASSOCIATED WITH THE INTRAORAL CAVITY”, filed on 17 Jun. 2005 and published under 2006-0283065, and which is assigned to the present Assignee. The contents of the aforesaid co-pending application are incorporated herein by reference in their entirety.
1. A method for manipulating a virtual dental model, comprising:—
3. A method according to claim 2, wherein step (d) is carried out substantially in an automated manner when said 3D virtual model provided at step (a) comprises color data associated with 3D topographic data, wherein said identification of said first virtual model part and said second virtual model part is based on color differences therebetween.
4. A method according to claim 2, wherein said second virtual model part comprises said obscured portion of said finish line.
5. A method according to claim 2, wherein manipulating said first virtual model part such as to create said auxiliary virtual model corresponding to said obscured part of said finish line comprises:
6. A method according to claim 5, wherein in step (g), said at least one cross section of said virtual model is provided along a corresponding plane inclined generally orthogonally to the occlusion plane.
7. A method according to claim 3, further comprising creating a trimmed first model part comprising said first model part and said auxiliary virtual model.
8. A method according to claim 7, comprising further manipulating said second model part to remove surface data thereof corresponding to said auxiliary virtual model and creating a trimmed second model part.
9. A method according to claim 8, further comprising manipulating said trimmed first model part such as to include a virtual model base projecting therefrom, and manipulating said trimmed second model part such as to include a model well substantially complementary to said model base.
10. A method according to claim 9, wherein said virtual model base comprises a depth dimension extending substantially orthogonally to an occlusial plane of the intra oral cavity, and wherein said virtual model base is of substantially uniform cross-sectional profile along a depth thereof.
11. A method according to claim 10, wherein said virtual model base comprises a perimeter when viewed along said depth direction corresponding to any one of a finish line or demarcation line of the trimmed first model.
12. A method according to claim 10, wherein said model base comprises a perimeter when viewed along said plan direction corresponding to any one of circle, oval, or polygon.
13. A method according to claim 9, further wherein one of said virtual model base and said virtual model well further comprises at least one virtual projection, and the other one of said virtual model base and said virtual model well further comprises a virtual socket structure for virtually receiving said at least one projection.
14. A method according to claim 13, wherein said at least one virtual projection and virtual socket structure are arranged with respect to said virtual base and virtual well such that said virtual base can be virtually received in said virtual well in only one orientation with respect thereto.
15. A method according to claim 9, further comprising the step of preparing computer instructions for controlling operation of a computer controlled manufacturing machine for creating physical models corresponding to said trimmed first and second virtual model parts respectively including said virtual model base and said virtual model well.
16. A method according to claim 15, wherein said computer instructions are directed to carrying out a material removal operation on at least one material blank to create said physical models.
17. A method according to claim 16, wherein said material removal operation comprises CNC machining of said at least one material blank.
18. A method for manufacturing a dental model, comprising:—
(A) providing a trimmed first virtual model part and a trimmed second virtual model part as defined in claim 9 corresponding to at least one dental site;
19. A method according to claim 18, wherein said computer instructions are directed to carrying out a material removal operation on at least one material blank to create said physical models.
20. A method according to claim 19, wherein said material removal operation comprises CNC machining of said at least one material blank.
21. A method according to claim 18, applied to a plurality of dental sites on at least one jaw of an intraoral cavity, and wherein said trimmed second virtual model corresponding to each said dental site are suitably joined in a virtual manner to provide a global virtual model of said jaw.
22. A method for at least one of designing and manufacturing a dental coping, using a trimmed first virtual model as claimed in claim 7.
23. A method for at least one of designing and manufacturing a dental prosthesis, using a trimmed first virtual model as claimed in claim 7.
24. A physical model set of at least a portion of an intra oral cavity, comprising a trimmed first physical model part and a trimmed second physical model part corresponding to a trimmed first virtual model part and a trimmed second virtual model part as defined in claim 18.
US11349124 2005-07-15 2006-02-08 Method for manipulating a dental virtual model, method for creating physical entities based on a dental virtual model thus manipulated, and dental models thus created Active 2026-11-10 US7555403B2 (en)
US12222287 US7734368B2 (en) 2005-07-15 2008-08-06 Method for manipulating a dental virtual model, method for creating physical entities based on a dental virtual model thus manipulated, and dental models thus created
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US14324784 US9186228B2 (en) 2005-07-15 2014-07-07 Method for manipulating a dental virtual model, method for creating physical entities based on a dental virtual model thus manipulated, and dental models thus created
US14882312 US9549794B2 (en) 2005-07-15 2015-10-13 Method for manipulating a dental virtual model, method for creating physical entities based on a dental virtual model thus manipulated, and dental models thus created
US15388580 US20170100220A1 (en) 2005-07-15 2016-12-22 Method for manipulating a dental virtual model, method for creating physical entities based on a dental virtual model thus manipulated, and dental models thus created
US12222287 Continuation US7734368B2 (en) 2005-07-15 2008-08-06 Method for manipulating a dental virtual model, method for creating physical entities based on a dental virtual model thus manipulated, and dental models thus created
US20070015111A1 true true US20070015111A1 (en) 2007-01-18
US7555403B2 US7555403B2 (en) 2009-06-30
US11349124 Active 2026-11-10 US7555403B2 (en) 2005-07-15 2006-02-08 Method for manipulating a dental virtual model, method for creating physical entities based on a dental virtual model thus manipulated, and dental models thus created
US12222287 Active US7734368B2 (en) 2005-07-15 2008-08-06 Method for manipulating a dental virtual model, method for creating physical entities based on a dental virtual model thus manipulated, and dental models thus created
US12654762 Active US8041439B2 (en) 2005-07-15 2009-12-31 Method for manipulating a dental virtual model, method for creating physical entities based on a dental virtual model thus manipulated, and dental models thus created
US13227435 Active US8359115B2 (en) 2005-07-15 2011-09-07 Method for manipulating a dental virtual model, method for creating physical entities based on a dental virtual model thus manipulated, and dental models thus created
US13716008 Active US8805563B2 (en) 2005-07-15 2012-12-14 Method for manipulating a dental virtual model, method for creating physical entities based on a dental virtual model thus manipulated, and dental models thus created
US14324784 Active US9186228B2 (en) 2005-07-15 2014-07-07 Method for manipulating a dental virtual model, method for creating physical entities based on a dental virtual model thus manipulated, and dental models thus created
US14882312 Active US9549794B2 (en) 2005-07-15 2015-10-13 Method for manipulating a dental virtual model, method for creating physical entities based on a dental virtual model thus manipulated, and dental models thus created
US15388580 Pending US20170100220A1 (en) 2005-07-15 2016-12-22 Method for manipulating a dental virtual model, method for creating physical entities based on a dental virtual model thus manipulated, and dental models thus created
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Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KOPELMAN, AVI;TAUB, ELDAD;REEL/FRAME:017552/0098