Effect of a bleaching agent on abrasion of resin-based restoratives

Autor(es)

Faraoni-Romano, Juliana Jendiroba ^[1] ; Turssi, Cecilia Pedroso ^[2] ; Serra, Monica Campos ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Sch Dent Ribeirao Preto, Dept Restorat Dent, BR-05508 Sao Paulo - Brazil

^[2] Univ Uberaba UNIUBE, Sch Dent, Lab Biomat Res, Uberaba - Brazil

• Tipo de documento: Artigo Científico
• Fonte: AMERICAN JOURNAL OF DENTISTRY; v. 22, n. 3, p. 171-174, JUN 2009.
• Citações Web of Science: 0

Resumo

Purpose: To evaluate the effect of a 10% carbamide peroxide-containing bleaching agent on brushing abrasion of esthetic restorative materials. Methods: Using a randomized complete block design, 150 specimens (n = 15) measuring 3 x 3 x 2 mm were fabricated into acrylic resin cylinders, using one of the restorative materials: a microfilled resin composite (At), a hybrid resin composite (Ch), a flowable resin composite (Wa), a resin-modified glass-ionomer cement (Fj) and a polyacid-modified resin composite (Dy). The bleaching agent or artificial saliva (control) was applied for 2 hours/day. After that, 120 brushing strokes were simulated automatically and the samples were kept in artificial saliva. Such bleaching/brushing cycle was performed daily for 21 days. Wear depth was assessed using profilometry. Results: Bleaching did not show significant effect on wear depth. There was a significant difference among the restorative materials. Tukey's test showed that (Al=Ch) < (Wa) < (Fj) and that Dy was only different from Fj. (Am J Dent 2009;22:171-174). (AU)

• Processo FAPESP: 01/07035-7 - Efeito da aplicação de um peróxido de carbamida a 10% sobre a resistência ao desgaste de materiais restauradores estéticos submetidos à escovação
• Beneficiário: Juliana Jendiroba Faraoni
• Modalidade de apoio: Bolsas no Brasil - Mestrado