title: Association between the peri-implant bone structure and stress distribution around the mandibular canal: a three-dimensional finite element analysis.
abstract: The aim of this study was to elucidate the association between the bone structure at implant insertion sites and stress distribution around the mandibular canal by means of three-dimensional finite element (3D FE) analysis. Four FE models were created with slice data using micro-computed tomography (micro-CT), and 3D FE analysis was performed. Mechanical analysis showed that the load reached the mandibular canal via the trabecular structure in all FE models. High levels of stress were generated around the mandibular canal when the distance between the mandibular canal and the implant decreased. High stress levels were also observed when cortical bone thickness and bone volume/total volume (BV/TV) were low. Our findings suggest that load is transmitted to the mandibular canal regardless of differences in the thickness of cortical bone or cancellous bone structure, but excessive load may be generated in bone with thin cortical and coarse cancellous structures.
authors.affiliation: Department of Anatomy, Tokyo Dental College, 1-2-2 Masago, Mihama-ku, Chiba 261-8502, Japan. kinoshitahideaki@tdc.ac.jp
authors.forename: Hideaki
authors.initials: H
authors.lastname: Kinoshita
authors.forename: Ken
authors.initials: K
authors.lastname: Nakahara
authors.forename: Satoru
authors.initials: S
authors.lastname: Matsunaga
authors.forename: Akinobu
authors.initials: A
authors.lastname: Usami
authors.forename: Masao
authors.initials: M
authors.lastname: Yoshinari
authors.forename: Naoki
authors.initials: N
authors.lastname: Takano
authors.forename: Yoshinobu
authors.initials: Y
authors.lastname: Ide
authors.forename: Shinichi
authors.initials: S
authors.lastname: Abe
mesh_terms: D001696:Biomechanical Phenomena; D015519:Bone Density / Q000502:physiology; D003198:Computer Simulation; D015921:Dental Implants; D055119:Elastic Modulus; D020342:Finite Element Analysis; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008334:Mandible / Q000033:anatomy & histology* / Q000502:physiology; D008953:Models, Anatomic; D008954:Models, Biological; D009929:Organ Size; D013314:Stress, Mechanical; D014057:Tomography, X-Ray Computed / Q000379:methods; D055114:X-Ray Microtomography / Q000379:methods
chemical_list: D015921:Dental Implants