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Reconstructing occlusal surfaces of teeth using a genetic algorithm with simulated annealing type selection

Published: 01 May 2001 Publication History

Abstract

In this paper, we present an application of numerical optimization for surface reconstruction (more precisely: reconstruction of missing parts of a real geometric object represented by volume data) by employing a specially designed genetic algorithm to solve a problem concerning computer-aided design in dentistry. Using a space mapping technique the surface of a given model tooth is fitted by a shape transformation to extrapolate (or reconstruct) the remaining surface of a patient's tooth with occurring damage such as a “drill hole.” Thereby, the genetic algorithm minimizes the error of the approximation by optimizing a set of control points that determine the coefficients for spline functions, which in turn define a space transformation. The fitness function to be minimized by the genetic algorithm is the error between the transformed occlusal surface of the model tooth and the remaining occlusal surface of the damaged (drilled) tooth. The algorithm, that is used, is based upon a proposal by Mahfoud and Goldberg. It uses a simulated-annealing type selection scheme, which is applied sequentially (pair-wise, or one-by-one) to the members in the parent generation and their respective offspring generated by mutation-crossover. We outline a proof of convergence for this algorithm. The algorithm is parallel in regard to computing the fitness-values of creatures.

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cover image ACM Conferences
SMA '01: Proceedings of the sixth ACM symposium on Solid modeling and applications
May 2001
328 pages
ISBN:1581133669
DOI:10.1145/376957
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Published: 01 May 2001

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Author Tags

  1. computer-aided restoration design
  2. constructive solid geometry
  3. genetic algorithm
  4. simulated annealing
  5. space mapping
  6. surface reconstruction
  7. volume modeling

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  • (2008)A Software System for Filling Complex Holes in 3D Meshes by Flexible Interacting ParticlesJournal of Computational Science and Technology10.1299/jcst.2.6552:4(655-668)Online publication date: 2008
  • (2007)Modeling Inlay/Onlay Prostheses with Mesh Deformation TechniquesProceedings of the 7th international conference on Computational Science, Part II10.1007/978-3-540-72586-2_21(154-157)Online publication date: 27-May-2007
  • (2007)A Hybrid Genetic Algorithm with Simulated Annealing for Nonlinear Blind Equalization Using RBF NetworksProceedings of the 8th international conference on Adaptive and Natural Computing Algorithms, Part I10.1007/978-3-540-71618-1_29(257-265)Online publication date: 11-Apr-2007
  • (2006)An overview of in vitro abrasive finishing & CAD/CAM of bioceramics in restorative dentistryInternational Journal of Machine Tools and Manufacture10.1016/j.ijmachtools.2005.07.04546:9(1013-1026)Online publication date: Jul-2006
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  • (2005)An External Surfaces Modeling of Inlay/onlay Using Geometric TechniquesThe KIPS Transactions:PartA10.3745/KIPSTA.2005.12A.6.51512A:6(515-522)Online publication date: 1-Dec-2005
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  • (2004)Surface reconstruction based on compactly supported radial basis functionsGeometric modeling10.5555/985821.985834(218-231)Online publication date: 1-Jan-2004
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