Fatigue Resistance between Point Electrical Solder and Silver Solder utilized in Orthodontics

Murilo Baena LOPES, Lourenço CORRER SOBRINHO, Simonides CONSANI, Mario Alexandre Coelho SENHORETI, Marcos Blanco CANGIANI

The purpose of this study was to compare the fatigue resistance of silver solder (Unitek) with point electrical solder, changed the kind of stainless-steel wire to be soldered. Eight specimens were made to each solder type and stainless-steel wire with 0.021” x 0.025” (Unitek, Tecnident, Lee Orthodontics and Ortho) and control (without solder), totalizing 96 specimens. All solderings were done by the same craftsman. The equipment used to make the point electrical solder was the Kernit SMP 3000, while the silver solder was executed with help of a gas-oxigen blow-pipe utilizing the flux (Rock Mountain). The specimens were submitted to a mechanic fatigue test in a (AMSLER) machine, with load of 1 kg and 2-degrees deflected on each side, until rupture. The results were statiscally analysed using a Tukey’s test (5%). According to results the control showed fatigue resistance statistically superior in relation to silver solder and point electrical solder, for all kinds of stainless-steel wire (p<0.05); The silver solder showed results statistically superior in relation to point electrical solder, for all kinds of stainless-steel wire (p<0.05).

Keywords: Fatigue. Orthodontics wire. Solder.

Thursday, May 02, 2024 09:54