Source: http://www.google.com.hk/patents/US7040896
Timestamp: 2013-06-19 10:59:14
Document Index: 55055128

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�M�Q US7040896 - Systems and methods for removing gingiva from computer tooth models - Google �M�Q�j�M �Ϥ� �a�� Play YouTube �s�D Gmail ���ݵw�� ��h »�i���M�Q�j�M | �������� | �n�J�i���M�Q�j�M�M�QA computer-implemented method separates gingiva from a model of a tooth by defining a cutting surface along the gingiva; and applying the cutting surface to the tooth to separate the gingiva from the tooth....http://www.google.com.hk/patents/US7040896?utm_source=gb-gplus-share�M�Q US7040896 - Systems and methods for removing gingiva from computer tooth models���}��US7040896 B2�X���������v�ӽЮѽs��10/087,153�o�G���2006�~5��9���ӽФ��2002�~2��28�� �u���v���2000�~8��16����L���}�M�Q��US7826646, US20020177108, US20040023188���}��087153, 10087153, US 7040896 B2, US 7040896B2, US-B2-7040896, US7040896 B2, US7040896B2�o��HElena Pavlovskaia, Venkata S. Sarva, Carmen Cheang��M�Q�v�HAlign Technology, Inc.�M�Q�ޥ� (100), �D�M�Q�ޥ� (99), �Q�H�U�M�Q�ޥ� (9), ���� (13) �~���s��: ���M�Q�ӼЧ�, ���M�Q�ӼЧ��M�Q����T��, �ڬw�M�Q��Systems and methods for removing gingiva from computer tooth modelsUS 7040896 B2�K�n A computer-implemented method separates gingiva from a model of a tooth by defining a cutting surface along the gingiva; and applying the cutting surface to the tooth to separate the gingiva from the tooth.
Tooth positioners for finishing orthodontic treatment are described by Kesling in the Am. J. Orthod. Oral. Surg. 31:297�V304 (1945) and 32:285�V293 (1946). The use of silicone positioners for the comprehensive orthodontic realignment of a patient's teeth is described in Warunek et al. (1989) J. Clin. Orthod. 23:694�V700. Clear plastic retainers for finishing and maintaining tooth positions are commercially available from Raintree Essix, Inc., New Orleans, La. 70125, and Tru-Tain Plastics, Rochester, Minn. 55902. The manufacture of orthodontic positioners is described in U.S. Pat. Nos. 5,186,623; 5,059,118; 5,055,039; 5,035,613; 4,856,991; 4,798,534; and 4,755,139.
Other publications describing the fabrication and use of dental positioners include Kleemann and Janssen (1996) J. Clin. Orthodon. 30:673�V680; Cureton (1996) J. Clin. Orthodon. 30:390�V395; Chiappone (1980) J. Clin. Orthodon. 14:121�V133; Shilliday (1971) Am. J. Orthodontics 59:596�V599; Wells (1970) Am. J. Orthodontics 58:351�V366; and Cottingham (1969) Am. J. Orthodontics 55:23�V31.
Kuroda et al. (1996) Am. J. Orthodontics 110:365�V369 describes a method for laser scanning a plaster dental cast to produce a digital image of the cast. See also U.S. Pat. No. 5,605,459.
A plaster cast of the patient's teeth is obtained by well known techniques, such as those described in Graber, Orthodontics: Principle and Practice, Second Edition, Saunders, Pa., 1969, pp. 401�V415. After the tooth casting is obtained, the casting is digitally scanned by a scanner, such as a non-contact type laser or destructive scanner or a contact-type scanner, to produce the IDDS. The data set produced by the scanner may be presented in any of a variety of digital formats to ensure compatibility with the software used to manipulate images represented by the data. In addition to the 3D image data gathered by laser scanning or destructive scanning the exposed surfaces of the teeth, a user may wish to gather data about hidden features, such as the roots of the patient's teeth and the patient's jaw bones. This information is used to build a detailed model of the patient's dentition and to show with more accuracy and precision how the teeth will respond to treatment. For example, information about the roots allows modeling of all tooth surfaces, instead of just the crowns, which in turn allows simulation of the relationships between the crowns and the roots as they move during treatment. Information about the patient's jaws and gums also enables a more accurate model of tooth movement during treatment. For example, an x-ray of the patient's jaw bones can assist in identifying any close teeth, and an MRI can provide information about the density of the patient's gum tissue. Moreover, information about the relationship between the patient's teeth and other cranial features allows accurate alignment of the teeth with respect to the rest of the head at each of the treatment steps. Data about these hidden features may be gathered from many sources, including 2D and 3D x-ray systems, CT scanners, and magnetic resonance imaging (MRI) systems. Using this data to introduce visually hidden features to the tooth model is described in more detail below.
Next, the process 220 clips the gingiva from the tooth using a curved clipping algorithm (260) as described in U.S. patent application Ser. No. 09/539,185, filed on Mar. 30, 2000, entitled ��System for Separating Teeth Model��; and U.S. patent application Ser. No. 09/539,021, filed on Mar. 30, 2000, entitled ��Flexible Plane for Separating Teeth Model,�� the contents of which are incorporated by reference.
i a*sqrt(z)+b*z=r where ��a�� and ��b�� are constants. The function can be used to find radius of the point that is equidistant from z-axis for any given z value. The constants a and b are determined by the points through which the curve is passing, namely, a top point 774, a crown point 776 and the gingival point 777.
FIG. 14 is a simplified block diagram of a data processing system 800 that may be used to develop orthodontic treatment plans. The data processing system 800 typically includes at least one processor 802 that communicates with a number of peripheral devices via bus subsystem 804. These peripheral devices typically include a storage subsystem 806 (memory subsystem 808 and file storage subsystem 814), a set of user interface input and output devices 818, and an interface to outside networks 816, including the public switched telephone network. This interface is shown schematically as ��Modems and Network Interface�� block 816, and is coupled to corresponding interface devices in other data processing systems via communication network interface 824. Data processing system 800 could be a terminal or a low-end personal computer or a high-end personal computer, workstation or mainframe.
In this context, the term ��bus subsystem�� is used generically so as to include any mechanism for letting the various components and subsystems communicate with each other as intended. With the exception of the input devices and the display, the other components need not be at the same physical location. Thus, for example, portions of the file storage system could be connected via various local-area or or wide-area network media, including telephone lines. Similarly, the input devices and display need not be at the same location as the processor, although it is anticipated that personal computers and workstations typically will be used.
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(1970) 58:351-366.�Q�H�U�M�Q�ޥ� �ޥΥ��M�Q�ӽФ���o�G��� �ӽЪ��M�Q�W��US77114472006�~10��20��2010�~5��4��Align Technology, Inc.System and method for automated generating of a cutting curve on a surfaceUS78444292006�~7��19��2010�~11��30��Align Technology, Inc.System and method for three-dimensional complete tooth modelingUS78652592007�~12��6��2011�~1��4��Align Technology, Inc.System and method for improved dental geometry representationUS79426722008�~2��15��2011�~5��17��Align Technology, Inc.Gingiva modelingUS81081892008�~3��25��2012�~1��31��Align Technologies, Inc.Reconstruction of non-visible part of toothUS81355692010�~11��30��2012�~3��13��Align Technology, Inc.System and method for three-dimensional complete tooth modelingUS82340002007�~1��8��2012�~7��31��Nobel Biocare Services AgMethod and apparatus for obtaining data for a dental component and a physical dental modelWO2008051863A22007�~10��19��2008�~5��2��Pavel AgapovSystem and method for automated generating of a cutting curve on a surfaceWO2012107069A1 *2011�~12��12��2012�~8��16��Martin TankMethod and analysis system for the geometric analysis of scan data from oral structures* �Ѽf�d�H��ޥ����� ���M�Q������433/215��ڱM�Q������A61C5/00, A61C5/10, A61C9/00 �X�@����A61C7/002, A61C5/10, A61C9/00, A61C9/0046, A61C2007/004, A61C5/00 �ڬw������A61C9/00, A61C5/00, A61C5/10������l�Ϥ�Google ���� - Sitemap - USPTO �j�q�U�� - ���p�v�F�� - �A�ȱ�� - ���� Google �M�Q - �N���^�X��ƬO�Ѭ��ӷ~�M�Q��Ʈw (IFI CLAIMS Patent Services) ����©2012 Google