title: Influence of orthotropy on biomechanics of peri-implant bone in complete mandible model with full dentition.
abstract: OBJECTIVE
  The study was to investigate the impact of orthotropic material on the biomechanics of dental implant, based on a detailed mandible with high geometric and mechanical similarity.
  
  
  METHODS
  Multiple data sources were used to elaborate detailed biological structures and implant CAD models. In addition, an extended orthotropic material assignment methodology based on harmonic fields was used to handle the alveolar ridge region to generate compatible orthotropic fields. The influence of orthotropic material was compared with the commonly used isotropic model and simplified orthotropic model.
  
  
  RESULTS
  The simulation results showed that the values of stress and strain on the implant-bone interface almost increased in the orthotropic model compared to the isotropic case, especially for the cancellous bone. However, the local stress concentration was more obvious in the isotropic case compared to that in orthotropic case. The simple orthotropic model revealed irregular stress and strain distribution, compared to the isotropic model and the real orthotropic model. The influence of orthotropy was little on the implant, periodontal ligament, tooth enamel, and dentin.
  
  
  CONCLUSIONS
  The orthotropic material has significant effect on stress and strain of implant-bone interface in the mandible, compared with the isotropic simulation. Real orthotropic mechanical properties of mandible should be emphasized in biomechanical studies of dental implants.
authors.affiliation: Department of Stomatology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China.
authors.forename: Xi
authors.initials: X
authors.lastname: Ding
authors.affiliation: School of Information Science and Engineering, Central South University, Changsha 410083, China.
authors.forename: Sheng-Hui
authors.identifier: 0000-0002-8872-2117
authors.initials: SH
authors.lastname: Liao
authors.affiliation: Department of Stomatology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China.
authors.forename: Xing-Hao
authors.initials: XH
authors.lastname: Zhu
authors.affiliation: Department of Oral and Maxillofacial Surgery, First Affiliated Hospital of Zhejiang University, Hangzhou 310006, China.
authors.forename: Hui-Ming
authors.initials: HM
authors.lastname: Wang
mesh_terms: D001696:Biomechanical Phenomena; D001842:Bone and Bones / Q000502:physiology; D015921:Dental Implants; D003817:Dentition; D020342:Finite Element Analysis; D006801:Humans; D008334:Mandible / Q000502:physiology*; D010513:Periodontal Ligament; D013314:Stress, Mechanical; D014070:Tooth
chemical_list: D015921:Dental Implants