上海交通大学学报（医学版）

›› 2012, Vol. 32 ›› Issue (1): 73-.doi: 10.3969/j.issn.1674-8115.2012.01.014

• 论著（临床研究） • 上一篇    下一篇

舌向集中(牙合)全口义齿应力分布的光弹性研究（常规全口义齿加载）

金文忠, 焦 婷, 彭 艳, 夏荫培, 庄 红   

  1. 上海交通大学 医学院附属第九人民医院口腔修复科 上海市口腔医学重点实验室, 上海 200011
  • 出版日期:2012-01-28 发布日期:2012-01-29
  • 作者简介:金文忠（1982—）, 男, 住院医师, 硕士生；电子信箱: mitenike_kin@yahoo.com.cn。
  • 基金资助:

    上海市科委基金（08DZ2271100）

Photoelastic analysis of stress distribution of complete dentures with lingualized occlusion (routine complete denture load)

JIN Wen-zhong, JIAO Ting, PENG Yan, XIA Yin-pei, ZHUANG Hong   

  1. Department of Prosthodontics, the Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai 200011, China
  • Online:2012-01-28 Published:2012-01-29
  • Supported by:

    Shanghai Science and Technology Committee Foundation, 08DZ2271100

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摘要：

目的 研究舌向集中与解剖全口义齿在正中及侧向应力加载时其支持组织的应力分布情况。方法 采用三维光弹实验的方法，在Cawood Ⅴ类无牙颌环氧树脂光弹模型上分别制作解剖和舌向集中全口义齿，并于正中及侧向状态下加载冻结，分析和比较支持组织的应力分布情况。结果 常规全口义齿正中及侧向加载时，舌向集中较解剖传递更多应力至舌侧，力分配较为均匀。结论 对于牙槽嵴重度吸收的无牙颌患者，在选用常规全口义齿修复时，可首先考虑舌向集中以辅助增强义齿的稳定性。

关键词: 舌向集中, 平衡, 全口义齿, 光弹实验

Abstract:

Objective To investigate the stress distribution of supporting tissues in complete dentures with lingualized occlusion and anatomic occlusion under centric and lateral stress load. Methods Three-dimensional photoelastic experiment mothod was adopted, and photoelastic models of epoxy were fabricated according to the Cawood V edentulous model. Complete dentures with lingualized occlusion and anatomic occlusion were prepared respectively. After frozen under centric and lateral stress load, the stress distribution of supporting tissues was analysed and compared. Results Under centric and lateral stress load, lingualized occlusion conveyed more stress to lingual side than anatomic occlusion in routine complete dentures, and the occlusion stress in lingualized occlusion was better distributed. Conclusion For patients with severe absorbed alveolar ridge undergoing complete denture restoration, lingualized occlusion should be considered in first place to increase the stability of dentures.

Key words: lingualized occlusion, balanced occlusion, complete denture, photoelastic experiment