[1]石 平,许 哲,李 哲,等. 上前牙美学区种植修复使用角度基台的三维有限元分析[J].中国美容医学,2019,(02):106-108.
　SHI Ping,XU Zhe,LI Zhe,et al. Effects of Angled Abutments with Implant Restoration in Anterior Maxilla AestheticArea: A Finite Element Analysis[J].Medical Aesthetics and Beauty,2019,(02):106-108.
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 上前牙美学区种植修复使用角度基台的三维有限元分析
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《中国美容医学》[ISSN:1008-6445/CN:61-1347/R]

卷:
期数:
2019年02期
页码:
106-108
栏目:
出版日期:
2019-02-15

文章信息/Info

Title:
 Effects of Angled Abutments with Implant Restoration in Anterior Maxilla Aesthetic
Area: A Finite Element Analysis
文章编号:
1008-6455(2019)02-0106-04
作者:
石 平1; 许 哲1; 李 哲2; 王 淼2; 常晓峰2; 杜良智2
Author(s):
SHI Ping1; XU Zhe1; LI Zhe2; WANG Miao2; CHANG Xiao-feng2; DU Liang-zhi2
关键词:
 ; [关键词]角度基台; 种植; 有限元法; 上前牙区; 美学区
Keywords:
Key words: angled abutment;  implant;  finite element method(FEM);  anterior maxilla;  aesthetic area
分类号:
R782.12
文献标志码:
A
摘要:
[摘要]目的：探讨分析上颌前牙美学区种植修复使用角度基台的影响因素。方法：建立仿真模型，运用三维有限元法
（Finite Element Method，FEM）分析4.0mm直径、10mm和13mm长度（Length，L）的种植体连接不同角度基台（0°、
10°、20°、30°）的生物力学性能。结果：随着基台角度增大，种植修复系统、皮质骨、松质骨各部位应力及应变递增，
分布更集中；与0°角度基台对比，使用 30°角度基台可增加34.8%（L13mm）、39.5%（L10mm）的皮质骨区最大应力，增加
18.1%（L13mm）、39.6%（L10mm）的松质骨区最大应力；同时，皮质骨区最大应变增加64.0%（L13mm）、64.4%（L10mm），
松质骨区最大应变增加23.9%（L13mm）、57.2%（L10mm）；种植体长度增加3mm，皮质骨和松质骨周围最大应力能减少
10.6%～18.2%，皮质骨区的最大弹性形变减少2.1%～2.2%，松质骨区的最大弹性形变减少17.9%～25.4%；负载下，各组模型
在连接接近20°角度基台时，皮质骨应变已接近骨弹性阈值。结论：基台角度越大，种植系统及牙槽骨所受应力、应变越大
越集中；上前牙区4mm直径种植体建议连接小于20°的角度基台，以减少局部皮质骨应力应变；增加种植体长度一定程度上
可减小应力和分散应变。

Abstract:
Abstract: Objective To explore influences of angled abutments connected with implant restoration in anterior maxilla aesthetic
area. Methods Established simulation models and utilized finite element method (FEM) analysing biomechanical properties
of implants (Diameter, 4.0 mm; Length, 10mm and 13mm) with different angled abutments(0°,10°,20°,30°). Results With the
increase of abutment angle, values of stress and strain of all parts increased, and distributions of stress and strain of all parts
became more concentrated; Compared with 0°abutment, connected with 30° angled abutments lead to increases in stress, which
were 34.8%(L13mm),39.5%(L10mm)in cortical bone and 23.9%(L13mm),57.2%(L10mm)in cancellous bone, and increases
in strain, which were 64.0%(L13mm),64.4%(L10mm)in cortical bone and 23.9%(L13mm),57.2%(L10mm)in cancellous
bone. Cortical bone elastic deformations may exceed the bone elastic threshold when angle of abutments got bigger than 20 °.An
increase of 3mm in implant length lead to a 10.6%～18.2% decrease of stress in cortical and cancellous bone, and a 2.1%～2.2%
decrease of strain in cortical bone. Conclusion With abutment angle increase, stresses and strains got bigger and more
concentrated in the abutment, cortical and cancellous bone; Abutments with angle less than 20° were safer for implant(Diameter
4mm) restorations in anterior maxilla area regarding stress and strain distribtion in cortical bone. Increases of the implant length
may helps to the distribution of force to a certain extend.

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更新日期/Last Update: 2019-03-11