title: Numerical analysis of tooth movement in different plans of transparent tooth correction therapies.
abstract: BACKGROUND
  The objective of this study was to investigate how treatment strategies in the same treatment affected the canine's initial displacement and the stress in periodontal ligament using three-dimensional finite element analysis. And to find out the way to design an effective treatment plan.
  
  
  METHODS
  Based on computed tomography images of the teeth and their supporting tissues, solid models were used to build finite element models. Three treatment plans of three different transparent tooth correction therapies finite element-analyses were operated.
  
  
  RESULTS
  The canine's initial displacement and stresses' distribution in periodontal ligament were obtained.
  
  
  CONCLUSIONS
  For rotation movement, the canine should rotate along tooth long axis, and not combine with other kinds of tooth movement as possible. For translation movement, the combination of translation and inclination movement is helpful for the treatment.
authors: Department of Chemical Engineering, Fuzhou University, Fuzhou, Fujian, China.
authors: Yong-Qing
authors: YQ
authors: Cai
authors: Department of Mechanical Engineering, Fuzhou University, Fuzhou, Fujian, China.
authors: Xiao-Xiang
authors: XX
authors: Yang
authors: Department of Mechanical Engineering, Fuzhou University, Fuzhou, Fujian, China.
authors: Bing-Wei
authors: BW
authors: He
authors: Department of Orthodontics, Affiliated Hospital of Stomatology, Fujian Medical University, Fuzhou, Fujian, China.
authors: Jun
authors: J
authors: Yao
mesh_terms: D001696:Biomechanical Phenomena; D003198:Computer Simulation; D020342:Finite Element Analysis / Q000706:statistics & numerical data*; D006801:Humans; D007180:Incisor / Q000378:metabolism; D008954:Models, Biological; D009970:Orthodontics / Q000706:statistics & numerical data*; D010513:Periodontal Ligament / Q000378:metabolism; D013314:Stress, Mechanical; D014087:Tooth Movement Techniques / Q000706:statistics & numerical data
keywords: Finite element method; center of rotation; initial movement; movement combination; stress