title: [Establishment of a three-dimensional finite element model of mandible with dental implants for immediate loading].
abstract: OBJECTIVE
  To establish a three-dimensional finite element model of mandible with dental implants for immediate loading, which will provide a basis for study of the biomechanical characteristics of the immediate loading implant-bone interface.
  
  
  METHODS
  A female edentulous mandible was adopted for CT scanning, the scanned data were saved with the form of DICOM, and then input into compute. Universal Surgical Integration System which was developed by ourselves and ANSYS 10.0 were used to divide mesh and establish finite element model. Three dental implants simulating the real shape of ITI thread implant were embedded in the anterior region of the mandible, of which implant-bone interface was granted with situation of smooth friction simulating the case of immediate loading.
  
  
  RESULTS
  The accurate finite element model of mandible with dental implants for immediate loading was established, which included 127811 tetrahedron elements with 182252 nodes. A single dental implant model comprised 13924 elements with 21420 nodes, the thread of it was continuous and smooth.
  
  
  CONCLUSIONS
  The biomechanical similarity, the geometrical analogy and clinical indication of the model were quite good. The three-dimensional finite element model developed by this method can apply for precise analysis of the rule of biomechanics on the implant-bone interface for immediate loading.
authors.affiliation: Department of Stomatology, First Hospital Affiliated of Wenzhou Medical College, Wenzhou 325002, Zhejiang Province, China. dingxi@hosp1.ac.cn
authors.forename: Xi
authors.initials: X
authors.lastname: Ding
authors.forename: Xing-hao
authors.initials: XH
authors.lastname: Zhu
authors.forename: Sheng-hui
authors.initials: SH
authors.lastname: Liao
authors.forename: Ruo-feng
authors.initials: RF
authors.lastname: Tong
authors.forename: Yi-ming
authors.initials: YM
authors.lastname: Fang
authors.forename: Lin
authors.initials: L
authors.lastname: Zhang
mesh_terms: D015921:Dental Implants; D017267:Dental Prosthesis Design; D003799:Dental Stress Analysis; D005260:Female; D020342:Finite Element Analysis; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D057893:Immediate Dental Implant Loading; D008334:Mandible; D003765:Models, Dental
chemical_list: D015921:Dental Implants