title: [Two-dimensional finite element analysis for morphology of craniofacial hard tissue of people with anterior crossbite at early permanent dentition].
abstract: OBJECTIVE
  To analyze the morphology of craniofacial hard tissue of people with anterior crossbite at early at early permanent dentition.
  
  
  METHODS
  The craniofacial morphology of hard tissue of 80 cases anterior crossbite of the early permanent dentition was analyzed by a special computer software system for finite element analysis of two-dimensional cranio-facial structure.
  
  
  RESULTS
  The size change of each element was smaller than shape change in cross-bite group, which suggested that the shape change was the main element change; The posterior cranial base was found abnormal in both male and female groups, with counterclockwise rotation occurring at posterior cranial base to some extent; The upper part of face and the maxillary suffered underdevelopment in both male and female groups; The most outstanding change in size and shape occurred at anterior and superior part of mental, with each component of counterclockwise rotation to varying degree.
  
  
  CONCLUSIONS
  Abnormality that occurs in craniofacial hard tissue of people with anterior crossbite at early permanent dentition period is highlighted by abnormal skeletal shape change and rotation, and may be one of the fundamental factors causing crossbite.
authors.affiliation: Department of Stomatology, 210 Military Hospital, Dalian.
authors.forename: J
authors.initials: J
authors.lastname: Tian
authors.forename: Z
authors.initials: Z
authors.lastname: Liu
authors.forename: Z
authors.initials: Z
authors.lastname: Lin
authors.forename: C
authors.initials: C
authors.lastname: Chen
mesh_terms: D000293:Adolescent; D002508:Cephalometry / Q000379:methods; D002648:Child; D019229:Dentition, Permanent; D005147:Facial Bones / Q000033:anatomy & histology*; D005260:Female; D020342:Finite Element Analysis; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000209:etiology*