Abstract:
Objective
To compare force distribution and periodontal tissue on maxillary and mandibular canines during canine distalization， we established three-dimensional finite element analysis of rapid canine movement through reducing resistance on parodontium.
Methods
DICOM data of teeth，temporomandibular joints， maxilla and mandible was obtained by 64-slice spiral scanning. Establishing a three-dimensional finite element model of canine movement by reducing resistance on parodontium. The force was loaded on the buccal and lingual side of canine， and the force distribution and displacement of canine was observed.
Results
The maximum displacement occurred on 1/3 of the canine crown， and gradually reduced towards the root apex of canine. No anchorage loss was observed. The maximum equivalent stress was observed on the distal buccal alveolar ridge of upper canine and distal lingual alveolar ridge of lower canine.
Conclusions
The model of rapid canine movement by reducing resistance on periodontium can reduce the risk of anchorage loss effectively. However， the canine had the tendency of tipping movement during distalization. Furthermore， Canines had the tendency to rotate buccally on the maxilla and lingually on the mandible. The findings suggest that a control of canine tipping and rotation be applied when reducing resistence on parodontium to accelerate canine distalization.
Key words:
Periodontal ligament,
Distraction osteogenesis,
Tooth movement,
3D finite element analysis
Feiyu Wang, Junjie Xue, Jing Wang, Yuanzhi Xu, Linjing Shu, Renhuan Huang. Three-dimensional finite element analysis of rapid canine movement through reducing resistance on parodontium[J]. Chinese Journal of Stomatological Research(Electronic Edition), 2014, 8(03): 186-190.