title: Biomechanical role of peri-implant trabecular structures during vertical loading.
abstract: The aim of this study was to identify the load transfer paths in cortical bone and trabecular structure of cancellous bone in the jawbones for loads from endosseous implants. Maxillae were resected from beagle dogs 6 months after implant surgery and imaged using micro-computed tomography (micro-CT). A three-dimensional structure was produced based on the CT data and peri-implant trabecular structure was observed. Load transfer paths were analyzed from the results of three-dimensional finite element analysis. Furthermore, buffer actions in bone trabeculae when strain increased during stress analysis and when loads were applied were observed. Peri-implant bone trabeculae were seen extending into the upper and lower cortical bone from the fixture. The direction of bone trabecular alignment corresponded with the load transfer paths. In addition, analysis with increased strain confirmed that trabecular structures could serve as load buffers. These results suggest that bone trabeculae supporting load transfer from implants undergo remodeling.
authors.affiliation: Department of Anatomy, Tokyo Dental College, Chiba, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Ohashi
authors.forename: Satoru
authors.initials: S
authors.lastname: Matsunaga
authors.forename: Ken
authors.initials: K
authors.lastname: Nakahara
authors.forename: Shinichi
authors.initials: S
authors.lastname: Abe
authors.forename: Yoshinobu
authors.initials: Y
authors.lastname: Ide
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Tamatsu
authors.forename: Naoki
authors.initials: N
authors.lastname: Takano
mesh_terms: D000818:Animals; D001696:Biomechanical Phenomena; D001732:Bite Force; D016723:Bone Remodeling / Q000502:physiology; D003198:Computer Simulation; D003758:Dental Implantation, Endosseous / Q000379:methods; D015921:Dental Implants; D019094:Dental Prosthesis, Implant-Supported; D004285:Dogs; D004735:Energy Transfer; D020342:Finite Element Analysis; D007091:Image Processing, Computer-Assisted / Q000379:methods; D021621:Imaging, Three-Dimensional / Q000379:methods; D008297:Male; D008437:Maxilla / Q000473:pathology / Q000502:physiology* / Q000601:surgery; D008954:Models, Biological; D013314:Stress, Mechanical; D055114:X-Ray Microtomography / Q000379:methods
chemical_list: D015921:Dental Implants
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