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Research on the Key Technologies of Fixed False Tooth CAD / CAM

Author: WangWeiZuo
Tutor: LiJia
School: Tianjin University
Course: Mechanical Manufacturing and Automation
Keywords: Fixed partial denture CAD / CAM Constrained deformation DFFD Design of the dental post
CLC: R783.6
Type: Master's thesis
Year: 2010
Downloads: 37
Quote: 0
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Abstract


With independent intellectual property rights for the development of dental CAD / CAM system , on the basis of the preliminary results , a number of key technologies for fixed dental CAD / CAM research , the full text as follows : Oral Anatomy and Physiology and CAD technology , analysis the mutual constraint relations between the teeth , the feature points using adjacent teeth as constraints ; based DFFD deformation method is proposed to construct an appropriate control framework model characteristics based on the tooth itself , to construct suitable deformation formula . Then the standard teeth corresponding feature point is moved to the position constraints inverse changes in the control framework , using the least squares method , to achieve the purpose of constrained deformation by deformation formula shows a modified example . Using Cao En surface NURBS - based local deformation method to improve the way the local deformation of the crown , the control vector is taken as the normal vector of the center point on the surface deformation affecting the area off to the point where the feature domain , the method in the control region of the center of the deformation amplitude maximum deformation occurs in the edge of the control region , and the amplitude of deformation in the control area from the center to the edge smoothing reduced , given a deformed instance . Through comparative analysis , design and the same shape of the root canal teeth pile of teeth Reverse Remodeling and finite element model . The force of the tooth when using different length of the pile in the shape made ??the analysis, evaluation and analysis of the result gives the advantages and disadvantages of using this type of dental post , proved possible problems of the methods are still more and requires further solved. Finally, summarized the full text put forward , and the next step .

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CLC: > Medicine, health > Oral Sciences > Oral orthotics > PROSTHETIC
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