上颌四颗切牙同时压低和内收过程中抗力中心的评估研究：一项有限元研究。
A study on evaluation of center of resistance of maxillary four incisors during simultaneous intrusion and retraction: A finite element study.
作者信息
Aruna J
机构信息
Department of Orthodontist, Vinayaga Missions Sankarachariyar Dental College, No.11/11 Tharun Dental Clinic, Salem, India.
出版信息
J Pharm Bioallied Sci. 2014 Jul;6(Suppl 1):S49-51. doi: 10.4103/0975-7406.137387.
AIM
The aim of this study is to evaluate the center of resistance of maxillary incisors during simultaneous intrusion and retraction.
SUBJECTS AND METHODS
In this study, the following steps were employed namely, (1) Preprocessing - the creation of geometric model, mesh generation and boundary conditions. (2) Postprocessing - the tooth movement and determination of center of resistance.
RESULTS
The center of the mid-sagittal plane approximately 6 mm apical and 4 mm posterior to a line perpendicular to the occlusal plane from the labial alveolar crest of the central incisor resistance for the maxillary four incisors was located within the.
CONCLUSION
Finite element is a sound mechanical method of analysis as it was sufficient enough to provide insight into interactions between orthodontic forces, and dental tissues and reliability of this study. Further by using this study clinically, the center of resistance can be precisely located in single rooted tooth during orthodontic treatment.
目的
本研究旨在评估上颌切牙在同时压低和内收过程中的抗力中心。
对象与方法
在本研究中，采用了以下步骤，即：（1）预处理——创建几何模型、划分网格和设定边界条件。（2）后处理——牙齿移动及抗力中心的确定。
结果
上颌四颗切牙抗力中心位于中矢状面，从中央切牙唇侧牙槽嵴起，在垂直于咬合平面的直线根尖约6mm且后方约4mm处。
结论
有限元法是一种可靠的力学分析方法，因为它足以深入了解正畸力与牙齿组织之间的相互作用以及本研究的可靠性。进一步在临床上应用本研究，在正畸治疗过程中可精确确定单根牙的抗力中心。
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