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Effect of Prosthesis Lateral Movement on the Value of Magnetic Retention Force

Vlado Carek ; Zavod za mobilnu protetiku Stomatološkog fakulteta Sveučilišta u Zagrebu
Vjekoslav Jerolimov ; Zavod za mobilnu protetiku Stomatološkog fakulteta Sveučilišta u Zagrebu

Puni tekst: hrvatski pdf 13.011 Kb

str. 15-22

preuzimanja: 398



Retention and methods of its measurement in mobile prostheses have long attracted attention of many investigators. The aim of this study was to determine the effect of prosthesis lateral shifts on the retention final value obtained by magnetic alloys. Experiments were performed in a sample of 157 pairs of magnetic alloys, their magnetic force being influenced by lateral forces. Measurements were carried out at the Institute of Physics, University of Zagreb. All magnetic alloy specimens were intact, of exact diameter and height, and of smooth and polished surface. Magnet diameter ranged from 4-7.1 mm, and their height was 2, 2.5 and 3 mm. The values of retention forces between two SmCo5 magnets of identical or different dimensions were measured in the sample. The measurements were performed on a magnetic dynamometer, a device constructed for this purpose. The mean value of retention in the sample with lateral magnet shift was 1.71, 1.31 and 1.08 N at a distance of 0.4, 1 and 1.6 mm, respectively.

Ključne riječi

prosthesis retention, magnetic alloy SmCo5

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Podaci na drugim jezicima: hrvatski

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