Laser and plasma dental soldering techniques applied to Ti-6Al-4V alloy: ultimate tensile strength and finite element analysis

The Journal of Prosthetic Dentistry
Morgana G CastroPaulo Cezar Simamoto Júnior

Abstract

The literature provides limited information regarding the performance of Ti-6Al-4V laser and plasma joints welded in prefabricated bars in dental applications. The purpose of this study was to evaluate the mechanical strength of different diameters of Ti-6Al-4V alloy welded with laser and plasma techniques. Forty-five dumbbell-shaped rods were created from Ti-6Al-4V and divided into 9 groups (n=5): a control group with 3-mm and intact bars; groups PL2.5, PL3, PL4, and PL5 (specimens with 2.5-, 3-, 4-, and 5-mm diameters welded with plasma); and groups L2.5, L3, L4, and L5 (specimens with 2.5-, 3-, 4-, and 5-mm diameters welded with laser). The specimens were tested for ultimate tensile strength (UTS), and elongation percentages (EP) were obtained. Fractured specimens were analyzed by stereomicroscopy, and welded area percentages (WAP) were calculated. Images were made with scanning electron microscopy. In the initial analysis, the data were analyzed with a 2-way ANOVA (2×4) and the Tukey Honestly Significant Difference (HSD) test. In the second analysis, the UTS and EP data were analyzed with 1-way ANOVA, and the Dunnett test was used to compare the 4 experimental groups with the control group (α=.05). The Pearson and Spearman ...Continue Reading

References

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Dec 12, 2012·The Journal of Prosthetic Dentistry·Francisco C L BarbiJefferson R Pereira
May 21, 2014·The Journal of Prosthetic Dentistry·Husain A GhadhanfariHyeongil Kim

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Citations

Nov 10, 2015·The Journal of Prosthetic Dentistry·Nancy de Assis FerreiraHelio Rodrigues Sampaio-Filho
Sep 8, 2015·The Journal of Prosthetic Dentistry·Karina Albino LencioniRossana P Almeida
May 31, 2017·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Marco DegidiClaudio Marchetti

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