[1]谭力芯,熊宇,张从纪,等.单侧游离端附着体义齿的应力中断设计及其力学传导分析[J].第三军医大学学报,2016,38(23):2507-2511.
 Tan Lixin,Xiong Yu,Zhang Congji,et al.Design and mechanical transmission analysis of stress conduction mode of an attachmentretained unilateral distal-extension removable partial denture with a stress breaking structure[J].J Third Mil Med Univ,2016,38(23):2507-2511.
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单侧游离端附着体义齿的应力中断设计及其力学传导分析(/HTML )
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《第三军医大学学报》[ISSN:1000-5404/CN:51-1095/R]

卷:
38卷
期数:
2016年第23期
页码:
2507-2511
栏目:
基础医学
出版日期:
2016-12-15

文章信息/Info

Title:
Design and mechanical transmission analysis of stress conduction mode of an attachmentretained unilateral distal-extension removable partial denture with a stress breaking structure
作者:
谭力芯熊宇张从纪杜甫王超霍相茹王少君周继祥
第三军医大学西南医院口腔科;金典义齿连锁机构;重庆医科大学附属口腔医院,口腔疾病与生物医学重庆市重点实验室;四川大学制造科学与工程学院
Author(s):
Tan Lixin Xiong Yu Zhang Congji Du Fu Wang Chao Huo Xiangru Wang Shaojun Zhou Jixiang

Department of Stomatology, Southwest Hospital, Third Military Medical University, Chongqing, 400038; Jindian Denture Chain Group, Chengdu, Sichuan Province, 610225; Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Stomatological Hospital of Chongqing Medical University, Chongqing, 401147; 4School of Manufacturing Science and Engineering, Sichuan University, Chengdu, Sichuan Province, 610065, China

关键词:
附着体义齿应力中断单侧游离端缺失三维有限元
Keywords:
denture retained by attachment stress breaking unilateral distalextension absence threedimensional finite element
分类号:
R318.01; R319; R783.6
文献标志码:
A
摘要:

目的      设计具有应力中断结构的单侧游离端附着体义齿,研究其在功能载荷下的应力传导方式。方法     选择1例个别正常牙合的志愿者,制取其石膏模型并模拟右侧下颌游离端缺失,完成应力中断式附着体义齿的设计和制作。对同一志愿者进行下颌骨牙科锥形束CT扫描,应力中断式附着体义齿进行激光扫描,在计算机中构建三维有限元模型。模拟咬合状态,分析应力中断式附着体义齿的应力传导方式。结果     设计并制作了具有应力中断结构的单侧游离端附着体义齿,构建了三维有限元模型。垂直和侧向载荷下,义齿基托区应力由近中连接体传递至基牙后,沿基牙长轴方向传导,基牙应力分布均匀。结论     本研究设计的应力中断式附着体义齿在修复单侧游离端缺失时可以有效改变义齿基托传递至基牙的应力方向,实现应力中断效应。

Abstract:

Objective     To design an attachment-retained unilateral distal-extension removable partial denture with a stress-breaking structure and to analyze the stress conduction mode of it under the functional load.  Methods      An attachment-retained removable partial denture with a stress breaking structure was designed on the simulated distal-extension absence with a plaster model from a volunteer’s mandibular teeth with individual normal occlusion. After the 3D images of the volunteer’s mandible were obtained by cone beam computed tomography (CBCT) scanning, and the stereo images of the fabricated stress-breaking denture were attained by 3D laser scanning. The data were transmitted into a computer to reconstruct digital 3D models for finite element analysis. Stress conduction of the denture under the functional load was analyzed in simulating human occlusion.  Results     An attachment-retained unilateral distal-extension removable partial denture with a stress-breaking structure was designed and fabricated. A digital 3D element model of it was also successfully constructed. Under the functional vertical load and lateral load, the stress borne by the denture base was transmitted to the abutments through the mesial connector, which axially loaded on the abutment teeth, and the distribution of the stress on the abutment teeth was much uniform. Conclusion      Our designed direct transmission of the stress from the denture base is interrupted by the stressbreaking structure of the attachment-retained denture.

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更新日期/Last Update: 2016-12-05