Automatic virtual alignment of dental arches in orthodontics

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Abstract

A key task in orthodontic treatment planning is to align the teeth in a given lower and upper arch so as to establish an ideal occlusion (i.e., contact relationship), subject to certain dental constraints. A simulation- based approach is introduced to establish a near- optimal occlusion based on certain dental constraints that are defined using features on tooth surfaces (e.g., cusps, ridges, incisal edges etc.). The alignment process is modeled as the simulation of a hypothetical spring- mass system where masses representing teeth are connected and influenced by springs representing dental constraints. The set of constraints chosen is based on well- known guidelines to achieve normal occlusion and to detect the most common type of orthodontic errors. The design and implementation of such a simulation- based system are discussed and experimental results are provided to demonstrate the efficacy of the approach.

Original languageEnglish (US)
Pages (from-to)371-398
Number of pages28
JournalComputer-Aided Design and Applications
Volume10
Issue number3
DOIs
StatePublished - 2013

Keywords

  • Dental alignment
  • Dental features
  • Digital orthodontics
  • Malocclusion
  • Surface mesh

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