您的位置:山东大学 -> 科技期刊社 -> 《山东大学学报(医学版)》

山东大学学报(医学版) ›› 2009, Vol. 47 ›› Issue (10): 68-71.

• 论文 • 上一篇    下一篇

拔牙创不同愈合期对磨牙远移影响的三维有限元分析

何淼1,李晓智1,王汉思1,李康宁2   

  1. 1. 重庆医科大学附属第一医院口腔科, 重庆 400016;2. 解放军后勤工程学院流体力学教研室,重庆 400016
  • 收稿日期:2009-02-04 出版日期:2009-10-16 发布日期:2009-10-16
  • 通讯作者: 李晓智(1957- ),女,教授,博士生导师,主要从事口 腔正畸学研究。Email:heliang20010411@163.com
  • 作者简介:何淼(1976- ),男,硕士研究生,主治医师,主要从事 口腔正畸学研究。

Threedimensional finite element analysis of molars′s distalization during different extraction periods of healing

HE Miao1, LI Xiaozhi1, WANG Hansi1, LI Kangning2   

  1. 1. Department of Stomatology, First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China;
    2. Department of Fluid Mechanics, PLA Logistical Engineering University, Chongqing 400016, China
  • Received:2009-02-04 Online:2009-10-16 Published:2009-10-16

摘要:

目的用有限元方法分析拔牙创不同愈合期远移磨牙时第一磨牙和双尖牙的位移及牙周膜应力分布情况。方法利用CT图片,结合MIMICS、IDEAS软件建立3组有限元模型,分别模拟第二磨牙存在、第二磨牙拔除后1周(拔牙创临床愈合期)、第二磨牙拔除后3个月(拔牙创骨愈合期)3种情况,对3组模型均进行相同力值的加载和计算。结果3组模型中第一磨牙牙周膜压应力集中区分布相似,压应力集中区主要位于腭根近中面、近颊根远中面偏根分叉处、远颊根远中面颈部。3组模型中第一双尖牙近中初始位移量:模型一>模型三>模型二。第一磨牙远中初始位移量:模型二>模型三>模型一。结论拔牙后早期移动牙齿,可获得较好的支抗控制与较快的牙移动速度。

关键词: 正畸学,矫正, 拔牙, 磨牙, 支抗, 有限元 分析

Abstract:

To analyze displacement and stress distribution of the periodontal ligament of the first molars and premolars during different extraction healing stages by using the finite element method. MethodsAdvanced CT scanning and MIMICS, IDEAS software were used to establish three finite element models: simulated existence of the second molar, simulated one week after the second molar was extracted (clinical healing stage), simulated three months after the second molar was extracted (bone healing period). The three groups of models  were carried out under the same power load and calculation. ResultsThe stress concentration area of the first molar′s periodontal ligament was similar in the three models, pressure stress concentration area was mainly located at the near level of the palatal root, the distal  level of the near buccal root and near furcation department, and the distal cervical level of the far buccal root. In the three model groups, the near initial displacement of the first premolars: model Ⅰ> model Ⅲ> model Ⅱ, and the distal initial displacement of the first molars: model Ⅱ> model Ⅲ> model Ⅰ. ConclusionExtraction of the second molars is of help to early shift the first molars to a distal level.

Key words: Orthodontics, corrective; Tooth extraction; Molars;   Anchorage; Finite element analysis

中图分类号: 

  • R783.5
[1] 魏成石,申丽丽,王效英. 上颌第一磨牙双腭根双根管2例[J]. 山东大学学报(医学版), 2017, 55(8): 110-112.
[2] 温艳丛, 王文娟. 拔牙位点保存技术的应用[J]. 山东大学学报(医学版), 2014, 52(S2): 80-81.
[3] 邵海港, 王璇, 王青. 山东地区人下颌第一前磨牙根管系统解剖研究[J]. 山东大学学报(医学版), 2014, 52(9): 85-89.
[4] 徐冬梅. 21mm机用镍钛锉在后磨牙根管治疗中的应用[J]. 山东大学学报(医学版), 2013, 51(06): 100-102.
[5] 谢志伟1,王凡涛2,郭泾1,3. 第二恒磨牙生长萌出位置和发育阶段与不同矢状骨面型的相关性研究[J]. 山东大学学报(医学版), 2012, 50(5): 75-.
[6] 宓勇1,孙兰英2,尹静1. 不同材料嵌体修复磨牙牙体缺损的临床观察[J]. 山东大学学报(医学版), 2012, 50(12): 118-121.
[7] . 利用数字成像曲面体层摄影对颌骨后部解剖标志显现情况的临床研究[J]. 山东大学学报(医学版), 2009, 47(10): 122-125.
[8] 邓莉华,黄纯,熊国平,陈瑜,梁晨曦. 上颌第二磨牙错牙合畸形的相关因素研究[J]. 山东大学学报(医学版), 2007, 45(8): 858-859.
[9] 刘 梅,王 铎,王旭霞 . 直接数字摄影技术在前磨牙邻面龋诊断中的应用[J]. 山东大学学报(医学版), 2007, 45(4): 420-422.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
No Suggested Reading articles found!