中国组织工程研究

中国组织工程研究 ›› 2011, Vol. 15 ›› Issue (22): 4069-4072.doi: 10.3969/j.issn.1673-8225.2011.22.019

• 数字化骨科 digital orthopedics • 上一篇    下一篇

Ⅱ类骨质下上颌窦区垂直骨高度不足时应用短种植体长度和直径的优化分析

王  晗1，李德超1，朱  扬1，张琳琳2，李鹤佳3   

  1. 1佳木斯大学附属口腔医院口腔种植科，黑龙江省佳木斯市 154002
    2双鸭山市口腔医院牙周黏膜科，黑龙江省双鸭山市 155100
    3佳木斯大学附属口腔医院口腔修复科，黑龙江省佳木斯市 154002
  • 收稿日期:2011-02-06 修回日期:2011-04-13 出版日期:2011-05-28 发布日期:2011-05-28
  • 通讯作者: 李德超，男，博士，副主任医师，佳木斯大学附属口腔医院口腔种植科，黑江省佳木斯市 154002 dechaoli2004@yahoo.com.cn
  • 作者简介:王晗★，女，1982年生，吉林省榆树市人，佳木斯大学在读硕士，汉族，主要从事口腔种植方向的研究。 wanghan2001_82@163.com
  • 基金资助:

    课题受黑龙江省卫生厅科技项目(2009-366)和佳木斯大学科学技术研究项目(Sz 2009-001)资助。

Bivariate evaluation of the short implant diameter and length in type Ⅱ jaw bone of maxillary sinus area

Wang Han1, Li De-chao1, Zhu Yang1, Zhang Lin-lin2, Li He-jia3   

  1. 1Department of Oral Implant, Stomatology Hospital of Jiamusi University, Jiamusi  154002, Heilongjiang Province, China
    2Department of Peridontology and Oral Mucosa, Stomatology Hospital of Shuangyashan, Shuangyashan  155100, Heilongjiang Province, China
    3Department of Prosthodontics, Stomatology Hospital of Jiamusi University, Jiamusi  154002, Heilongjiang Province, China
  • Received:2011-02-06 Revised:2011-04-13 Online:2011-05-28 Published:2011-05-28
  • Contact: Li De-chao, Doctor, Associate chief physician, Department of Oral Implant, Stomatology Hospital of Jiamusi University, Jiamusi 154002, Heilongjiang Province, China dechaoli2004@yahoo.com.cn
  • About author:Wang Han★, Studying for master’s degree, Department of Oral Implant, Stomatology Hospital of Jiamusi University, Jiamusi 154002, Heilongjiang Province, China wanghan2001_82@163.com
  • Supported by:

    Science and Technology Plan of Heilongjiang Health Bureau, No. 2009-366*; Science and Technology Research Program of Jiamusi University, No. Sz 2009-001*

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440

被引次数

22

摘要：

背景：应用短种植体在上颌窦区种植后生物力学指标会有哪些变化？
目的：建立包含上颌窦的Ⅱ类骨质真实上颌骨模型，观察Ⅱ类骨质下上颌窦区垂直骨高度为9 mm时应用短种植体的最佳的长度和直径范围。
方法：建立包含短种植体的上颌窦区Ⅱ类骨质的骨块三维有限元模型，设定短种植体直径为4~6 mm和长度为6~8 mm，分析直径和长度对颌骨的等效应力峰值。
结果与结论：垂直(颊舌)加载时，随着直径增加，皮、松质骨的等效应力分别下降26%(40%)和31%(45%)，随着长度增加，皮质骨和松质骨的等效应力峰值分别下降8%(5%)和0(7%)。两种方式加载时下，当直径 >4.8 mm且长度 >7.5 mm时，颌骨的等效应力峰值对直径和长度的响应曲线曲率位于-1和0之间，变量直径比长度对颌骨的等效应力峰值的影响更明显。结果证实，短种植体的长度和直径的增加可以降低颌骨应力，尤其是直径的增加更有利于改善力学分布，当窦嵴距为9 mm应用短种植体时，直径应 >4.8 mm，长度应 >7.5 mm，可保证其稳定性。

关键词: 短种植体, 应力分布, 上颌窦区骨高度不足, Ⅱ类骨质, 组织构建

Abstract:

BACKGROUND: What changes occur in the biomechanical indexes of maxillary sinus area following short implant implantation?
OBJECTIVE: To research the best range of length and diameter when applying the short implants at the vertical bone height in maxillary sinus of 9 mm, providing the theoretical basis for the clinical application of short implant.
METHODS: The establishment of parameterization included the three-dimension finite element model of type Ⅱ bone of the upper jaw sinus area of short implant. The diameter of the short implants was 4-6 mm and the length was 6-8 mm. The maximum equivalent stresses of diameter and length for the jaw were analyzed.
RESULTS AND CONCLUSION: Under vertical (buccal-lingual) loading condition, the amplification of maximum equivalent stresses in cortical bone and cancellous bone were 26% (40%) and 31% (45%) respectively with the diameter increasing; The amplification of maximum equivalent stresses in cortical bone and cancellous bone were 8% (5%) and 0 (7%) respectively with the length increasing. When diameter exceeded 4.8 mm and length exceeded 7.5 mm, the response curve curvatures of maximum equivalent stresses to diameter and length in jaw bone ranged from -1 to 0. And the variation of the maximum equivalent stresses in jaw bone was more sensitive to diameter than to length. The increasing for the diameter and length of short implants could reduce the stress of jaw bone. Especially the increasing of diameter are could improve distribution of mechanics better. From the biomechanics angle, when vertical bone height in maxillary sinus of 9 mm short implant, the diameter should be > 4.8 mm, the length should be > 7.5 mm, to ensure its stability.

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