Evaluación de la fricción en arcos ortodóncicos de acero inoxidable con y sin recubrimiento vítreo aplicado por el método Sol-Gel

introduction: the aim of this in vitro study was to compare the static and dynamic frictional force generated between surfaces of metallic brackets and glass coated applied by the sol-gel method, and non coated wires. methods: metallic brackets (0,018 x 0,025”), stainless steel wires (0,016 x 0,016”) and elastic ligatures were used in all frictional tests. all components were characterized using se m and optical microscopy. the frictional force was evaluated using a machine of tests testresources？ in dry environment. results: the results showed that the stainless steel wires without modification (control group) showed the lowest values of static friction force followed by the stainless steel wires group coated by sol-gel method and the wires group with thermic treatment (thermic group). for dynamic friction force, the sol-gel group showed the smallest values, followed by the control group and the thermal group. conclusions: the evaluated coating did not show a better frictional performance applied on stainless steel brackets in comparison with the control group.