Biomechanics of upper molar uprighting with Tomas microimplant: a finite element study

• DOI: 10.3760/cma.j.issn.1674-5760.2012.02.007
• Publication Date: 2012-06-20
• Authors: Dong mei Guo; Shaohai Chang; Yingjuan Lu; Yushan Ye
• Keywords: Maxillary molar; Maxillary first molar

Objective To investigate the effects of combined force for maxillary second molar uprighting with micro-implant anchorage system. Methods Maxillary molars mesiobuccally tipping were included in study and Helix CT scanning was taken.Three-dimensional finite element model periodontal tissues established by 3D modeling software.The effect embedding position micro-implant,orientation level loading on displacement periedontal tissne investigated.Results With located mesiobuccal alveolar bone molar,the presented distal palatal rotation; when mesio-occlusal or mesio-palatal alveolar,the buccal rotation.Conclusions Complex is effective uprighting.

Key words: Micro-implant; Torque; Upright molar; Three-dimensional