两种不同精密附着体义齿的应力分析

山东大学学报(医学版)

两种不同精密附着体义齿的应力分析

曲风杰¹，左书玉¹，史言利¹，戴燕平²，刘红霜¹，牟月照¹

1. 山东大学附属省立医院口腔科,　　济南　２５００２１； 2. 济南市第五人民医院口腔科，济南　２５００２２

收稿日期:2008-06-05 修回日期:1900-01-01 出版日期:2008-09-16 发布日期:2008-09-16
通讯作者: 牟月照

Force system intruding of two different procession attachment dentures

QU Feng-jie¹, ZUO Shu-yu¹, SHI Yan-li¹, DAI Yan-ping²,　LIU Hong-shuang¹, MU Yue-zhao¹

１. Department of Stomatology, Provincial Hospital Affiliated to Shandong University, Jinan 250021, China；２. Department of Stomatology, Jinan Fifth People′s Hospital, Jinan 250022, China

Received:2008-06-05 Revised:1900-01-01 Online:2008-09-16 Published:2008-09-16
Contact: MU Yue-zhao

摘要/Abstract

摘要： 目的探讨按扣式和键槽缓压式两种精密附着体修复下颌磨牙游离缺失的应力分布情况。方法采用三维有限元分析法。结果在单侧磨牙加轴向力200N时，键槽缓压式精密附着体比按扣式精密附着体对基牙的影响显著减低。在单侧双尖牙加轴向力200N时，无论在舌侧，还是在唇侧，对另外两基牙的影响显著减小。与在单侧磨牙施加轴向力200N时相比，在双侧磨牙同时施加轴向力时，基牙和下颌骨的应力稍稍增大。结论①无论是按扣式精密附着体还是键槽缓压式精密附着体，无论在磨牙还是在双尖牙施加轴向力，对基牙颊侧的影响比对舌侧的影响小。②当在磨牙施加轴向力时，键槽缓压式精密附着体对基牙的影响显著减低，铰链可以起到非常好的缓冲保护效果。

关键词: 应力, 物理, 义齿精密附着体, 义齿

Abstract: To explore the force system of different precision attachments in mandible distalextension edentulous by a finiteelement model. MethodsThe threedimensional finite element stress analysis method was used. Results The effects of attachments of ASC-52 were reduced in abutment when the molar was forced by 200N. When the molar was forced by 200N, the effection of the attachment ASC-52 was much more reduced than the attachment of the revax system. When the premolar was forced by 200N, the effection on attachments was reduced either liable or lingual. When the double molars were forced by 200?N, the stress intruding was added in mandibles and abutments. ConclusionsThe labial effection of abutments is smaller than lingual in the attachment of the revax system or ASC-52. The effection of the ASC-52 attachment is reduced in the abutment when the molars are forced.

Key words: Dentures, Denture precision attachment, Stress, mechanical

中图分类号:

R783.6

曲风杰,左书玉,史言利,戴燕平,刘红霜,牟月照 . 两种不同精密附着体义齿的应力分析[J]. 山东大学学报(医学版), 2008, 46(9): 894-897.

QU Feng-jie,ZUO Shu-yu, SHI Yan-li,DAI Yan-ping,LIU Hong-shuang, MU Yue-zhao. Force system intruding of two different procession attachment dentures[J]. JOURNAL OF SHANDONG UNIVERSITY (HEALTH SCIENCES), 2008, 46(9): 894-897.

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