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Development of the Nickel-Free Dental Magnetic Attachment Using the Magnetic Shielding Material which Lost its Magnetism by Nitrogen-Solid Solution

update:2018-12-12
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Features
In the dental magnetic attachments which retain dentures, superstructures of dental implants, and so on, the non-magnetic stainless steel containing nickel is used in order to reinforce their retentive force by a magnetic circuit. The surface layer of magnetic stainless steel which loses its magnetism by nitrogen-solid solution obtained from heating in nitrogen gas at high temperature, enable to form a magnetic circuit, which does not contain nickel at all, and to reduce its components and manufacturing processes. The method using the nitrogen-solid solution in this study is warrantable to manufacture the nickel-free dental magnetic attachment with high safety.

Targeted Application(s)/Industry
The nickel-free magnetic attachment realizes a retainer with higher safety, and can expect the application to medical and dental care for clinical uses, such as not only a denture but a dental implant, an epithese, and so on with easy desorption.

Researchers

Division of Dental Biomaterials, Graduate School of Dentistry

TAKADA, Yukyo , Associate Professor
Doctor of Engineering

Keywords

Related Information

Publication
Y. Takada, M. Takahashi, J. Shiroto, A. Kikuchi, M. Kikuchi, Laser welding between magnetic stainless steels and titanium as a shield ring and spacer material, J J Mag Dent, 20(2), 2011, 1-4.

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