title: Three-dimensional finite element analysis of a newly designed onplant miniplate anchorage system.
abstract: The purpose of this research was to evaluate the structural stress and deformation of a newly designed onplant miniplate anchorage system compared to a standard anchorage system. A bone block integrated with a novel miniplate and fixation screw system was simulated in a three-dimensional model and subjected to force at different directions. The stress distribution and deformation of the miniplate system and cortical bone were evaluated using the three-dimensional finite element method. The results showed that the stress on the plate system and bone was linearly proportional to the force magnitude and was higher when the force was in a vertical direction (Y-axis). Stress and deformation values of the two screws (screw 1 and 2) were asymmetric when the force was added along Y-axis and was greater in screw 1. The highest deformation value of the screws was 7.5148 μm, much smaller than the limit value. The load was decreased for each single miniscrew, and the ability of the new anchorage system to bear the load was also enhanced to some degree. It was suggested that the newly designed onplant miniplate anchorage system is effective, easily implanted and minimally invasive.
authors.affiliation: Department of Orthodontics, Dalian Stomatological Hospital, Dalian Medical University, Dalian, 116021, China. llin3333@163.com.
authors.forename: Lin
authors.initials: L
authors.lastname: Liu
authors.affiliation: Department of Orthodontics, Dalian Stomatological Hospital, Dalian Medical University, Dalian, 116021, China.
authors.forename: Yin-Ying
authors.initials: YY
authors.lastname: Qu
authors.affiliation: Dalian University of Technology, Dalian, 116024, China.
authors.forename: Li-Jun
authors.initials: LJ
authors.lastname: Jiang
authors.affiliation: Department of Orthodontics, Dalian Stomatological Hospital, Dalian Medical University, Dalian, 116021, China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Zhou
authors.affiliation: Department of Orthodontics, Dalian Stomatological Hospital, Dalian Medical University, Dalian, 116021, China.
authors.forename: Tian-Qi
authors.initials: TQ
authors.lastname: Tang
mesh_terms: D001696:Biomechanical Phenomena; D001860:Bone Plates; D001863:Bone Screws; D000071556:Cancellous Bone / Q000033:anatomy & histology / Q000601:surgery; D003198:Computer Simulation; D000071538:Cortical Bone / Q000033:anatomy & histology / Q000601:surgery; D020342:Finite Element Analysis; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D052280:Orthodontic Anchorage Procedures / Q000295:instrumentation* / Q000379:methods; D013314:Stress, Mechanical
keywords: finite element analysis; onplant miniplate anchorage system; skeletal anchorage system; temporary skeletal anchorage devices