中国组织工程研究

中国组织工程研究 ›› 2011, Vol. 15 ›› Issue (4): 625-628.doi: 10.3969/j.issn.1673-8225.2011.04.013

• 骨与关节生物力学 bone and joint biomechanics • 上一篇    下一篇

栓钉式游离牵引钩与传统游离牵引钩的机械力学对比

刘克瑾1，吉  利2，黎炽彬2，黄代营2，钟小龙2   

  1. 1南方医科大学附属口腔医院•广东省口腔医院，广东省广州市   510280
    2中山大学附属第一医院口腔科，广东省广州市  510080
  • 收稿日期:2010-06-07 修回日期:2010-12-06 出版日期:2011-01-22 发布日期:2011-01-22
  • 通讯作者: 钟小龙，副教授，硕士生导师，中山大学附属第一医院口腔科，广东省广州市 510080 zxlpd@163.com
  • 作者简介:刘克瑾★，女，1983年生，安徽省合肥市人，汉族，2008年中山大学毕业，硕士，医师，主要从事临床口腔医学研究。 wendy0501@qq.com 并列第一作者，吉利，男，1978年生，湖北省荆州市人，汉族，2006年武汉大学口腔医学院毕业，硕士，主治医师，主要从事口腔正畸学与颞下颌关节病方面的研究。 dr_jili@163.com
  • 基金资助:

    广东省科技计划项目(2009B060700043)，项目名称：上下颌骨内埋伏前牙的研究与治疗。

Torsional stability of innovative versus traditional split crimpable hooks 

Liu Ke-jin1, Ji Li2, Li Chi-bin2, Huang Dai-ying2, Zhong Xiao-long2   

  1. 1Stomatology Hospital of Southern Medical University, Stomatology Hospital of Guangdong Province, Guangzhou  510280, Guangdong Province, China
    2Department of Stomatology, First Hospital of Sun Yat-sen University, Guangzhou  510080, Guangdong Province, China
  • Received:2010-06-07 Revised:2010-12-06 Online:2011-01-22 Published:2011-01-22
  • Contact: Zhong Xiao-long, Associate professor, Master’s supervisor, Department of Stomatology, First Hospital of Sun Yat-sen University, Guangzhou 510080, Guangdong Province, China zxlpd@163.com
  • About author:Liu Ke-jin★, Master, Physician, Stomatology Hospital of Southern Medical University, Stomatology Hospital of Guangdong Province, Guangzhou 510280, Guangdong Province, China wendy0501@qq.com Ji Li, Master, Attending physician, Department of Stomatology, First Hospital of Sun Yat-sen University, Guangzhou 510080, Guangdong Province, China dr_jili@163.com Liu Ke-jin and Ji Li equally contributed to this paper.
  • Supported by:

    the Science and Technology Development Program of Guangdong Province, No. 2009B060700043*

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摘要：

背景：游离牵引钩是直丝弓矫治器滑动法移动牙齿的一种常用装置。传统的游离牵引钩的缺点是固位力不足，加力后牵引钩容易在弓丝上滑动，从而不能达到整体移动牙齿的目的。
目的：研发一种新型栓钉式游离牵引钩，检测其静态抗移位性能，并与传统牵引钩对比。
方法：设计并生产一种由开口的箱状体、牵引钩和栓钉组成的新型游离牵引钩。30个新型牵引钩和30个AO游离牵引钩分别安置于0.019×0.025英寸不锈钢方丝上，分别放到多用途加载机上进行加载，测量每个牵引钩在弓丝上移位所需的力值。比较两种牵引钩的抗移位性能。
结果与结论：:移动新型牵引钩所需的力值(22.37±9.06 )N明显大于移动AO游离牵引钩所需的力值(4.96±0.70 ) N(P < 0.01)。与传统的游离牵引钩相比较，栓钉式牵引钩具有结构更合理，固位原理更先进，以及优异的抗移位性能。

关键词: 游离牵引钩, 加载, 移位, 机械力学, 固位

Abstract:

BACKGROUND: Traction is a method generally used in orthodontic treatment by which the movement of teeth can be manipulated. However, the split crimpable hooks currently used appear to unwished slide sometimes, due to insufficient resistance, which cannot achieve the en-mass movement of teeth.
OBJECTIVE: To develop a new type of archwire hook assembly (uncrimpable split hook with pin) and to compare the torsional stability with traditional split hook.
METHODS: The new archwire hooks composed of split box-form body, hook and pin were designed and manufactured. A total of 30 innovative archwire hooks and 30 traditional AO split hooks were respectively attached to a 0.019 × 0.025-inch stainless steel archwire. The archwire/hook attachment assembly was fitted into a dual contact jig and securely mounted to the base of a universal testing machine. The force that required to dislodge the hooks on the archwire was measured. The resistance of dislodgement of two hooks was compared.
RESULTS AND CONCLUSION: The mean forces required to dislodge the hooks measured in newtons (N) were as follows: new archwire hooks (22.37±9.06) N, traditional split crimpable hooks (4.96±0.70) N. The new archwire hooks provide more resistance to torsional dislodgement from a rectangular stabilizing archwire than traditional split crimpable hooks.

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