临床口腔医学杂志2024，Vol.40Issue(10)：601-605,5.DOI:10.3969/j.issn.1003-1634.2024.10.006
四种加力方式下尖牙远中移动的有限元分析
Finite element analysis of distal movement of canines under four loading methods
王策丙 1黄智蕴 1彭友俭1
作者信息
- 1. 武汉大学人民医院口腔医学中心 湖北 武汉 430061
- 折叠
摘要
Abstract
Objective:To compare the biomechanical changes of maxillary canines under four loading methods of straight-wire orthodontic technique using finite element analysis.Methods:A finite element model of the maxillary canine,periodontal ligament,maxillary bone,and orthodontic appliance was constructed.Four loading methods were set on the canine bracket wings,Method Ⅰ:Loading at the center of the mesial twin wings of the canine bracket,Method Ⅱ:Loading at the center of the distal twin wings of the canine bracket,Method Ⅲ:Loading at the center of all four wings of the canine bracket,Method IV:Loading at the traction hook of the canine bracket.A horizontal distal orthodontic force of 1 N was applied to the canine.The displacement trends and stress distribution in the tooth and periodontal ligament under the four loading methods were compared.Results:Under all four loading methods,the maxillary canines exhibited distal tipping movement with a tendency for mesial-labial and distal-lingual rotation.The stress distribution in the tooth and periodontal ligament was more uniform un-der Method IV,achieving closer to bodily movement than the other three methods,but the degree of rotational movement was greater.Conclusion:Among the four loading methods,Method IV was the most effective for distal movement of the maxillary canines.关键词
尖牙/正畸力/托槽/有限元分析Key words
Canine/Orthodontic force/Bracket/Finite element analysis分类
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王策丙,黄智蕴,彭友俭..四种加力方式下尖牙远中移动的有限元分析[J].临床口腔医学杂志,2024,40(10):601-605,5.
