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and objective: When using direct composites is important totake into account the specific characteristics of the material and the instrumentslike the curing lamp used to built any kind of restoration withcomposite. Create scientific evidence so professionals can choose the typeof lamp, composite, and the needed technique to provide a better clinical result. Materials and methods: 10 samples were made in 24 groups, which evaluated3 types of lamps: (Optilux® 501 - halogen at full power), (Optilux® 501 - halogenramp) and (Bluephase® - LED), with 4 types of resins: Filtek® Supreme XT, Filtek®Z350, Tetric® N Ceram and Esthet ®X, and 2 placement techniques: incremental andblock. The Vickers hardness by penetration at the surface and deep of each samplewas evaluated. The results were analyzed both bi-and multivariate. Results: Filtek®Supreme XT showed the highest hardness, followed by Filtek® Z350, Tetric® N Ceramand Esthet® X. The hardness was dependent on the lamp; the values were higherwith Optilux® 501 with ramp, followed by Optilux® 501 at full power and finally LEDBluephase®. Better results were obtained using the technique of incremental placementcompared with the block one, and these were higher in the surface regioncompared to deep region. Conclusion: The highest hardness was obtained with resinFiltek® Supreme XT, using the lamp Optilux® 501 with ramp and positioned with anincremental technique.

Diferencia en la dureza de resinas utilizadas convencionalmente al polimerizarse con diferentes tipos de luz