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KMID : 0376319940060010377
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Dental Journal of CNU
1994 Volume.6 No. 1 p.377 ~ p.386
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Effects of the changes of the magnetic volume on the magnetic forces
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Abstract
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Recently, magnetic forces are considered as a method for more efficient tooth movement. The purpose of this study was to evaluate the effects of the changes f the magnetic volume on the magnetic forces. The universal testing machine and the
electronic
balance were used for the exact measurement of the force with constant air gap. While the magnet was kept same on one side, the magnetic volume of the other side was increased gradually in four manners. In the first group, the thickness was
increased by
adding same size of the magnets one after another while the thickness was increased by changing with a thicker magnet gradually in the second group. In the third group, the width was increased by adding same size of the magnets while the width
was
increased by changing with a wider magnet gradually in the last group.
@ES The results were as follows:
@EN 1. With the increase of the thickness, the magnetic force increased, while the magnetic force decreased with the increase of the width.
2. The magnetic force according to the change of the magnetic volume showed the distribution of the logarithmic function.
3. An originally thick magnet showed larger force than the added magnets although both of them had same volume.
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KEYWORD
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