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The effect of carbamide peroxide bleaching agents on the microhardness of dental ceramics

Passos, Sheila P; Vanderlei, Aleska D; Salazar-Marocho, Susana M; Azevedo, Sarina M.B; Vasquez, Vanessa Z.C; Kimpara, Estevão T.
Acta odontol. latinoam; 23 (2), 2010
This study examined the effect of 10% and 16% carbamide peroxide bleaching agents on the surface microhardness of micro-particulate feldspathic ceramics (VM7 and VM13, Vita Zahnfabrik). Forty specimens (8-mm diameter, 2-mm thickness) were divided into four groups (n=10): G1- VM7 + 10% Whiteness, G2- VM7 ...
Cerámica, Materiales Dentales, Dureza/efectos de los fármacos, Peróxidos/farmacología, Blanqueadores Dentales/farmacología, Urea/análogos & derivados, Peróxido de Carbamida, Pruebas de Dureza, Urea/farmacología
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Effects of five carbamide peroxide bleaching gels on composite resin microhardness

Briso, André L.F; Tuñas, Inger T.C; de Almeida, Letícia C.A.G; Rahal, Vanessa; Ambrosano, Glaucia M.B.
Acta odontol. latinoam; 23 (1), 2010
The purpose of this study was to evaluate the effects of five home bleaching products containing 15-16% carbamide peroxide on the microhardness of microhybrid composite resin Z-250 (3M/Espe). A total of 72 specimens were fabricated in cylindrical acrylic matrices (4×2 mm), filled with composite resin an...
Resinas Compuestas, Pruebas de Dureza, Peróxidos/farmacología, Blanqueamiento de Dientes, Urea/análogos & derivados, Peróxido de Carbamida, Geles, Urea/farmacología
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