Influence of removing excess of resin-based materials applied to eroded enamel on the resistance to erosive challenge

Autor(es)

Genovez Tereza, Guida Paola ^[1] ; de Oliveira, Gabriela Cristina ^[1] ; de Andrade Moreira Machado, Maria Aparecida ^[1] ; de Oliveira, Thais Marchine ^[1] ; da Silva, Thiago Cruvinel ^[1] ; Rios, Daniela ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo Bauru, Bauru Sch Dent, Dept Pediat Dent Orthodont & Publ Hlth, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Dentistry; v. 47, p. 49-54, APR 2016.
• Citações Web of Science: 3

Resumo

Objectives: The aim of this study was to evaluate the effect of removing excess of resin-based materials applied to eroded enamel, subjected to erosive challenge. Methods: Bovine enamel blocks were immersed in HCl 0.01 M, pH 2.3, for 30 s under agitation at 50 rpm in room temperature, in order to form a softened erosion lesion. The blocks were then randomly divided into eight groups (n = 12) and treated as follows: Cn- and Ce-control without treatment, Hn- and He-fissure resin sealant (Helioseal Clear (R)), An-and Ae-self-etch adhesive (Adhese (R)), In-and Ie-infiltrant (Icon (R)); being n-with excess removal and e-without excess removal of the material. After application of the materials, the blocks were immersed in HCl for 2 min, followed by immersion in artificial saliva for 120 min. This cycle was repeated four times a day for five days. Material thickness and enamel wear were assessed using profilometry. Data were analyzed by two-way ANOVA and Tukey's test (P < 0.05). Results: Groups He, Ae, and Ie resulted in the formation of a layer of material over enamel, being similar effective in inhibiting erosion progression (P > 0.05). Groups Hn, An, and In (with excess removal) were similar to controls (Cn, Ce) and resulted in near enamel loss after application and after erosive challenge (P > 0.05). Conclusions: Resin-based materials are able to protect enamel against erosion only when they are present over enamel, as a physical barrier. (C) 2016 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 14/02384-3 - Efeito da aplicação de diferentes materiais resinosos sobre o esmalte erodido, submetido à erosão e/ou abrasão in vitro e in situ
• Beneficiário: Gabriela Cristina de Oliveira
• Modalidade de apoio: Bolsas no Brasil - Doutorado