Magfit磁性附着体铸接式和焊接式衔铁口外磁性固位力的测定

华西口腔医学杂志

Magfit磁性附着体铸接式和焊接式衔铁口外磁性固位力的测定

杨凌,杜莉,林映荷,胥春

610041　四川大学华西口腔医院修复科

收稿日期:2003-10-25 修回日期:2003-10-25 出版日期:2003-10-20 发布日期:2003-10-20
基金资助:
本课题为四川省应用基础项目资助项目(编号02sy029.138)

The Measurement of Retentive Force of Laser-melted and Cast Post-keepers of Magfit Magnetic Attachments

YANGLing,DULi,LIN Yinghe,et al.

epartment ofProsthodontics,West China College ofStomatology,Sichuan Universi- ty,Chengdu610041,China

Received:2003-10-25 Revised:2003-10-25 Online:2003-10-20 Published:2003-10-20

摘要/Abstract

摘要：

目的　比较铸接和焊接对衔铁口外磁性固位力的影响,为临床应用提供实验依据。方法　制作Mag- fitMD800磁性附着体铸接式衔铁试件5个和焊接式衔铁试件6个,对照组为未经处理的成品衔铁,在万能测试机上对3组试件垂直向磁性固位力进行测定。结果　焊接式衔铁组和铸接式衔铁组的口外垂直向磁性固位力分别为 (4·223 3±0·217 0)N、(3·792 9±0·296 4)N。焊接式衔铁组口外垂直向磁性固位力明显大于铸接式衔铁组(P< 0·05)。结论　焊接对磁性附着体磁性固位力的影响较铸接小。

关键词: 焊接式衔铁, 铸接式衔铁, 磁性固位力, 磁性附着体

Abstract:

Objective　In order to compare the influence of casting and laser welding on magnetic retentive force, the magnetic retentive forces of laser-melted and cast post-keepers of the magnetic attachments were measuredin vitro.Methods　5 cast and 6 laser-melted post-keeper specimens (Magfit MD800) were formed, respectively. Using untreated keeper as control group, the vertical magnetic retentive forces were measured by a universal testing machine.Results　The average vertical mag- netic retentive force of the laser-melted post-keeper group and the cast post-keeper groupin vitrowere(4·223 3±0·217 0)N, (3·792 9±0·296 4)N, respectively. Compared with the cast post-keeper group, the average vertical magnetic retentive force of the laser-melted post-keeper group was much higherin vitro(P<0·05).Conclusion　Laserwelding had less influence on the magnetic retentive force of the magnetic attachments than casting.

Key words: laser-melted post-keeper, cast post-keeper, magnetic retentive force, magnetic attachments

杨凌,杜莉,林映荷,胥春. Magfit磁性附着体铸接式和焊接式衔铁口外磁性固位力的测定[J]. 华西口腔医学杂志.

YANGLing,DULi,LIN Yinghe,et al. . The Measurement of Retentive Force of Laser-melted and Cast Post-keepers of Magfit Magnetic Attachments[J]. West China Journal of Stomatology.

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