中国实用医刊
中國實用醫刊
중국실용의간
CENTRAL PLAINS MEDICAL JOURNAL
2011年
5期
42-45
,共4页
有限元法%牙应力分析%可摘义齿
有限元法%牙應力分析%可摘義齒
유한원법%아응력분석%가적의치
Finite element method%Dental stress analysis%Removable partial denture
目的 分析下颌KennedyⅠ类可摘义齿在各种垂直载荷状态下不同材料连接体的应力分布情况.方法 通过螺旋CT扫描及Unigraphics、MSC.MARC软件建立下颌骨及Kennedy Ⅰ类牙列缺损可摘义齿的三维有限元模型,在连接体材料不同情况下施加垂直载荷,计算并绘制出各种情况下的应力分布图像.结果 相同载荷下,3种义齿连接体变形比较,全弹性义齿材料者最大,铸造支架与塑料结合者最小,但同铸造支架与弹性义齿结合者差别不大.结论 无金属卡环显露的铸造支架与弹性义齿材料结合的义齿设计修复下颌双侧游离端缺失是一种值得推广的临床设计.
目的 分析下頜KennedyⅠ類可摘義齒在各種垂直載荷狀態下不同材料連接體的應力分佈情況.方法 通過螺鏇CT掃描及Unigraphics、MSC.MARC軟件建立下頜骨及Kennedy Ⅰ類牙列缺損可摘義齒的三維有限元模型,在連接體材料不同情況下施加垂直載荷,計算併繪製齣各種情況下的應力分佈圖像.結果 相同載荷下,3種義齒連接體變形比較,全彈性義齒材料者最大,鑄造支架與塑料結閤者最小,但同鑄造支架與彈性義齒結閤者差彆不大.結論 無金屬卡環顯露的鑄造支架與彈性義齒材料結閤的義齒設計脩複下頜雙側遊離耑缺失是一種值得推廣的臨床設計.
목적 분석하합KennedyⅠ류가적의치재각충수직재하상태하불동재료련접체적응력분포정황.방법 통과라선CT소묘급Unigraphics、MSC.MARC연건건립하합골급Kennedy Ⅰ류아렬결손가적의치적삼유유한원모형,재련접체재료불동정황하시가수직재하,계산병회제출각충정황하적응력분포도상.결과 상동재하하,3충의치련접체변형비교,전탄성의치재료자최대,주조지가여소료결합자최소,단동주조지가여탄성의치결합자차별불대.결론 무금속잡배현로적주조지가여탄성의치재료결합적의치설계수복하합쌍측유리단결실시일충치득추엄적림상설계.
Objective To investigate the stress distribution in the mandibular bilateral distal-extention removable partial dentures with different material connectors by loading various vertical force.Methods The three-dimensional finite element models of the mandible and Kennedy class Ⅰ removable partial dentures were constructed by means of spiral CT scanning technology,UG and MSC.MARC engineering design program. It was analysed for the stress distribution by loading vertical force under different material connectors.Results The connectors of the dentures which were made by full flexible denture material showed the highest degree of deformation by loading the same force among the three types of dentures.It was little for the difference of the deformation for the next two types dentures. Conclusions It is a preferable clinical design for bilateral distal-extension removable partial dentures combined with casting frame and flexible denture material which has not metal clasps.
