14 January 2014 Passivity of the bars manufactured using current technologies: laser-sintering, casting, and milling
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Abstract
Implant overdentures are often selected as therapeutic options for the treatment of edentulous mandibles. ”Passive-fit” between the mesostructures and the implants plays an important role in the longevity of the implant-prosthetic assembly in the oral cavity. ”Mis-fit” can cause mechanical or biological complications. The purpose of this test was to investigate the passive adaptation of the bars manufactured through different technologies, and in this respect two bars (short and long) were fabricated by each process: laser-sintering, milling, casting. The tensions induced by tightening the connection screw between the bars and the underlying implants were recorded using strain gauges and used as measuring and comparing tool in testing the bars’ ”passivity”. The results of the test showed that the milled bars had the best ”passive-fit”, followed by laser-sintered bars, while cast bars had the lowest adaptation level.
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Diana Popescu, Sabin Popescu, Daniel Pop, Anca Jivanescu, Carmen Todea, "Passivity of the bars manufactured using current technologies: laser-sintering, casting, and milling", Proc. SPIE 8925, Fifth International Conference on Lasers in Medicine: Biotechnologies Integrated in Daily Medicine, 89250H (14 January 2014); doi: 10.1117/12.2045855; https://doi.org/10.1117/12.2045855
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