Selection of optimal length and diameter of mini implant in two different forces:a three-dimensional finite element analysis
10.7518/hxkq.2014.01.020
- VernacularTitle:不同力作用下微种植体长度和直径的双变量优化分析
- Author:
Yingjuan LU
1
;
Shaohai CHANG
;
Hong WU
;
Yansong YU
;
Yushan YE
;
Lanru CHANG
;
Wei WANG
Author Information
1. 中山大学孙逸仙纪念医院口腔科
- Keywords:
finite element analysis;
mini implant;
length;
diameter;
optimization
- From:
West China Journal of Stomatology
2014;(1):85-90
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effect of different length and diameters on the stability of mini implant and to select optimal length and diameter using continuous variation of parameters. Methods To perform 3-dimensional finite element analysis, finite element models of a maxilla, and mini implants with length of 6-12 mm and diameters of 1.2-2.0 mm were generated. Load of two different forces were applied to the head of mini implant. One type was horizontal force (HF), the other was composite force (CF). The maximum equivalent stress (Max EQV) in maxilla and the maximum displacement (Max DM) of mini implant were evaluated. Results The Max EQV in maxilla and Max DM of mini implant decreased as length and diameter increased. When length was more than 9 mm, the evaluation indexes were small and had a less change. Datas indicated that diameter played a more important role in reducing target, and was a more effective parameter in re-ducing Max EQV when CF was loaded. Conclusion From biomechanical point of view, the choice of the length should not be more than 9 mm. When CF is loaded using the mini implant, diameter exceeding 1.2 mm are optimal design for mini implant.
