期刊文献+

不同冠根比对埋伏上颌中切牙牙周应力分布的影响

Influence of crown-root ratio on the stress distribution of periodontal ligament of impacted maxillary central incisor
收藏 分享 导出
摘要 目的建立不同冠根比的埋伏上颌中切牙及其周围组织的三维有限元模型,分析不同工况下的牙周膜应力分布,从而为临床上牵引埋伏牙提供参考。方法选取一名上颌中切牙水平阻生患者的CBCT数据,建立上颌中切牙的模型并截成1∶0.25、1∶0.5、1∶0.75、1∶1四个冠根比,分别施加30 g、60 g、90 g的力,分析不同工况下牙周膜的应力分布。结果对于同一模型,当牵引力增大时牙周膜应力分布规律不变,仅应力值增大。同一牵引力下,随着冠根比不断减小,牙周膜应力越来越小,高应力区越来越集中。结论对于不同冠根比的埋伏牙可采用不同牵引力,牙根越长牵引力越大。 Objective To contruct 3 D finite element models of an impacted maxillary central incisor of different crown-root ratios and their supporting issues,to analyse stress distribution of periodontal ligament when various tractions were exerted,and to provide some reference for clinical treatment. Methods A patient whose maxillary central incisor was impacted was chosen and his CBCT data was used to construct 3D finite element models of the incisor which was cutted into four crown-root ratios: 1∶ 0. 25、1 ∶ 0. 5、1 ∶ 0. 75、1 ∶ 1,then their periodontal tissues were established. Various tractions(30 g,60 g,90 g) were exerted respectively. Then their Von Misis stress distribution was analysed. Results For the same modle,as the traction increased the stress distribution pattern remained the same,while stress value increased. For the same traction value,as the crown-root ratio decreased,the stress value also reduced,while the high stress aera became more and more concentrated. Conclusion We can apply different traction for tooth with different crown-root ratios. The longer the root is,the heavier extraction can be applied.
作者 严月彤 邵玶 YAN Yue-tong, SHAO Ping (College of Stamotology, Harbin Medical University, Harbin 150001, China)
出处 《哈尔滨医科大学学报》 CAS 2018年第1期78-81,共4页 Journal of Harbin Medical University
关键词 有限元 埋伏中切牙 应力分布 冠根比 finite element analysis impacted incisor stress distribution crown-root ratio
作者简介 严月彤(1990-),女,住院医师,硕士。;通讯作者:E-mail:13604881927@163.com
  • 相关文献

参考文献7

二级参考文献61

  • 1赵志河,房兵.尖牙牙周膜应力分布的研究—三维有限元分析[J].华西口腔医学杂志,1994,12(4):301-302. 被引量:10
  • 2步捷,王旭霞,张君,陈岱韵,黄艳.恒牙埋伏阻生的临床分析[J].临床口腔医学杂志,2007,23(6):363-366. 被引量:42
  • 3邱蔚六.口腔颌面外科学[M].6版.北京:人民卫生出版社,2009:217-218. 被引量:10
  • 4耿富琴 高雪梅.上颌中切牙阻生的诊断与治疗[J].口腔正畸学,1995,291:25-25. 被引量:10
  • 5陶洪美 傅民魁.直接粘结正畸附件矫治埋伏牙.中华口腔医学杂志,1981,16(4):214-214. 被引量:10
  • 6Miloglu O, Cakici F, Caglayan F, et al. The prevalence of root di- lacerations in a Turkish population J 1. Med Oral Patol Oral Cir Bu- cal, 2010,15(3) :441-444. 被引量:1
  • 7Dimitrios P, Nikolaos D. Treatment of an impacted dilacerated maxil- lary central incisor[ J]. Am J Orthod Dentofacial Orthop, 2011,139 (3) :378-387. 被引量:1
  • 8Ayers E, Kennedy D, Wiebe C. Clinical recommendations for man- agement of mesiodens and unerupted permanent maxillary central in- cisors[ J ]. Eur Arch Paediatr Dent, 2014,15 (6) :421-428. 被引量:1
  • 9Choi SC1, Park JH, Kwon YD, et al. Surgical repositioning of the impacted immature maxillary central incisor [ J ]. Quintessence Int, 2011,42( 1 ) :25-28. 被引量:1
  • 10Ho KH, Liao YF. Predictors of surgical-orthodontic treatment dura- tion of unilateral impacted maxillary central incisors [ J ]. Orthod Craniofac Res, 2011,14(3) :175-180. 被引量:1

共引文献15

投稿分析

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈
新型冠状病毒肺炎防控与诊疗专栏