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Abstract
PURPOSE: Analyze the possible alterations of mechanical properties of cobalt-chromium alloys measured through the Young’s module, when comaring new and/or recycled materials and casting techniques, in order to establish if those alloys can be resued to fabricate removable partial dentures. METHODS: For this experimental in vitro study, 60 specimens casted in Co-Cr alloys were assigned to two groups according to the type of alloy, Bego’s Wironit L.A® and Dentaurum’s Remanium® 800. The two groups were divided into 6 subgroups of 5 specimens each regarding state of the material and type of centrifuge used: new material with induction centrifuge, 50%-new-and-50%-recycled material with induction centrifuge, recycled material with induction centrifuge, new material with conventional centrifuge, 50%-new-and-50%-recycled material with conventional centrifuge, and recycled material with conventional centrifuge. FINDINGS: The state of the material is the factor that was more associated to the variation of the Young’s module, being the 50%-new-and-50%-recylced material that showed the highest variation. When comparing new and used materials, values were similar. Young’s module was less affected by the type of centrifuge used. There was not a significant association between the kind of Co-Cr alloy, Wironit® y Remanium®, and the variation in the Young’s module, in spite of presenting variations in composition (α=005).This journal is registered under a Creative Commons Attribution 4.0 International Public License. Thus, this work may be reproduced, distributed, and publicly shared in digital format, as long as the names of the authors and Pontificia Universidad Javeriana are acknowledged. Others are allowed to quote, adapt, transform, auto-archive, republish, and create based on this material, for any purpose (even commercial ones), provided the authorship is duly acknowledged, a link to the original work is provided, and it is specified if changes have been made. Pontificia Universidad Javeriana does not hold the rights of published works and the authors are solely responsible for the contents of their works; they keep the moral, intellectual, privacy, and publicity rights.
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