中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (34): 5449-5454.doi: 10.3969/j.issn.2095-4344.2017.34.007

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

自锁托槽配合双丝技术倾斜力学性能的三维数字化分析

周  容,何  淞,吴  稀,白  蕊,贺  涵,黄  跃
  

  1. 西南医科大学附属口腔医院,四川省泸州市  646000
  • 收稿日期:2017-11-01 出版日期:2017-12-08 发布日期:2018-01-04
  • 通讯作者: 黄跃,博士,副教授,硕士生导师,西南医科大学附属口腔医院,四川省泸州市 646000
  • 作者简介:周容,女,汉族,1991年生,西南医科大学口腔医学院在读硕士,医师,主要从事口腔生物力学研究。
  • 基金资助:

    四川省医学会青年课题(川学会医字[2016]2号);四川省人力资源和社会保障厅基础研究课题(川人社办发[2015]93号);西南医大校课题([2016]217号2016145)

A three-dimensional finite element analysis of the tip mechanical capabilities of self-ligating brackets with double wires

  1. Hospital of Stomatology, Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Received:2017-11-01 Online:2017-12-08 Published:2018-01-04
  • Contact: Huang Yue, M.D., Associate professor, Master’s supervisor, Hospital of Stomatology, Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • About author:Zhou Rong, Studying for master’s degree, Physician, Hospital of Stomatology, Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Supported by:
    the Youth Project of Sichuan Provincial Medical Association, No. [2016]2; the Basic Research Project supported by the Sichuan Provincial Department of Human Resources and Social Security, No. [2015]93; the Project of Southwest Medical University, No. [2016]217-2016145

摘要:

文章快速阅读:

 

文题释义:
双丝技术:是多股麻花丝技术的升级,指同时应用两根弓丝进行正畸加力,而实验主要针对被动自锁托槽代表DamonQ双丝的应用。相对于传统托槽,DamonQ托槽增设了辅助性水平槽沟,利用主、辅弓丝形成双丝系统,将传统单丝系统的两点接触受力变为四点接触,即形成平面受力,其力学效果有明显的变化。
倾斜力学:是指正畸牙移动过程中,牙齿受力后产生以支点为中心的冠、根向相反方向的移动。在实验主要指矫治期间纠正倾斜牙齿的移动,即正轴,为竖直近远中倾斜牙轴的过程,其效果与槽沟宽度密切相关。因此,设有双槽沟的DamonQ托槽的倾斜力学规律与传统托槽可能有所区别。
 
背景:目前临床上自锁托槽的应用越来越广泛,但其双丝技术对牙齿三维方向的控制规律及机制并不完全明了,尤其在倾斜方面的研究更是少见。
目的:运用有限元法建立DamonQ托槽搭配不同尺寸弓丝的三维有限元模型,以研究探索自锁托槽运用双丝技术纠正倾斜的力学性能。
方法:用Pro/E软件建立不同尺寸的弓丝以及DamonQ托槽模型,分组装配模型后导入软件中进行倾斜力学模拟加载,收集力矩值,绘制相应的曲线图和柱状图。
结果与结论:①单丝倾斜运动时,辅弓单丝倾斜力矩值相比同尺寸主弓单丝呈倍数增加;②双丝倾斜移动时,倾斜力矩值大小与主、辅弓丝的尺寸呈正相关,且辅弓丝尺寸的影响大于主弓丝;③结果说明:临床上前牙区牙齿倾斜度较大时,可用主弓单丝先行简单排齐,待倾斜角度减小后加入双丝进行精确调整,而实际应用中则需要正畸医生根据临床实际情况,选择更适宜的弓丝搭配。

关键词: 生物材料, 口腔生物材料, 自锁托槽, 双丝技术, 倾斜, 三维数字化分析, DamonQ, 辅弓丝, 弓丝尺寸, 余隙, 槽沟

Abstract:

BACKGROUND: At present, the using of self-ligating brackets is more and more extensive. But it is unclear about the rules and mechanisms underlying the tooth control by double wires in three dimensions, especially in tipping.
OBJECTIVE: Using the finite element method to establish different three-dimensional finite models of DamonQ brackets and archwires with different sizes, and then to explore the tip mechanical properties when using double wire technique.
METHODS: Different three-dimensional finite models of DamonQ brackets and archwires with different sizes were established by Pro/E Wildfire5.0. The models were assembled and imported to MSC.Marc.Mentat2005R3 followed by simulating the tip load, calculating torque moment and drawing the corresponding graph and histogram.
RESULTS AND CONCLUSION: (1) With tipping movement of single wire, tipping moment of auxiliary single archwires was multiplied by the same size as main archwires. (2) With tipping movement of double wires, the tip moment value increased when the size of the main or auxiliary archwire increased, and the influence of the size of the auxiliary archwire was greater than that of the main archwire. (3) When the tilt angle is large, we can simply level the tooth using the main archwire first, and then precisely adjust the tooth position with double wires. And in the clinical pratice, orthodontists can choose the appropriate size of double wires according to their needs.

Key words: Tissue Engineering, Biocompatible Materials, Finite element analysis

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