A three-dimensional finite element evaluation of magnetic attachment attractive force and the influence of the magnetic circuit

被引：4
作者：
Kumano, Hirokazu [1 ]
Nakamura, Yoshinori [1 ]
Kanbara, Ryo [1 ]
Takada, Yukyo [2 ]
Ochiai, Kent T. [3 ]
Tanaka, Yoshinobu [1 ]
机构：
[1] Aichi Gakuin Univ, Sch Dent, Dept Removable Prosthodont, Chikusa Ku, Nagoya, Aichi 4648651, Japan
[2] Tohoku Univ, Grad Sch Dent, Div Dent Biomat, Aoba Ku, Sendai, Miyagi 9808575, Japan
[3] Univ So Calif, Dent Sci Ctr, DEN, Los Angeles, CA 90089 USA
来源：
DENTAL MATERIALS JOURNAL | 2014年 / 33卷 / 05期
关键词：
Finite element method; Magnetic attachment; Attractive force; Magnetic analysis; OVERDENTURES; RETENTION;
D O I：
10.4012/dmj.2014-080
中图分类号：
R78 [口腔科学];
学科分类号：
1003 ;
摘要：
The finite element method has been considered to be excellent evaluative technique to study magnetic circuit optimization. The present study analyzed and quantitatively evaluated the different effects of magnetic circuit on attractive force and magnetic flux density using a three-dimensional finite element method for comparative evaluation. The diameter of a non-magnetic material in the shield disk of a magnetic assembly was variably increased by 0.1 mm to a maximum 2.0 mm in this study design. The analysis results demonstrate that attractive force increases until the diameter of the non-magnetic spacing material reaches a diameter of 0.5 mm where it peaks and then decreases as the overall diameter increases over 0.5 mm. The present analysis suggested that the attractive force for a magnetic attachment is optimized with an appropriate magnetic assembly shield disk diameter using a non-magnetic material to effectively change the magnetic circuit efficiency and resulting retention.
引用
收藏
页码：669 / 673
页数：5
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