Dental Materials Journal
Online ISSN : 1881-1361
Print ISSN : 0287-4547
ISSN-L : 0287-4547
Properties of Magnetically Attractive Experimental Resin Composites
Susumu HIRANOHiromi YASUKAWARie NOMOTOKeisuke MORIYAMATadashi HIRASAWA
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JOURNAL FREE ACCESS

1996 Volume 15 Issue 2 Pages 91-97,249

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Abstract
SUS444 stainless steel filled chemically cured resin composites that can attract magnet were fabricated. The filler was treated with various concentrations of silane. The experimental composite was easy to handle and showed a good shelf life. The maximal properties obtained are as follows; The attraction force to a magnetic attachment was 1/3-1/4 lower than the commercially available magnet-keeper system for dental magnetic attachment. Flexural strength and Knoop hardness of the composite were 76MPa (7.7kgf/mm2) and 64KHN. These values were lower than the commercially available chemically cured composite used as a reference. Eluted metal from the composite in 1% lactic acid solution for 7 days showed 0.7mg/cm2, but in 0.9% NaCl solution for 7 days, it could not be detected.
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© The Japanese Society for Dental Materials and Devices
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