Effect of erosion and methods for its control on the surface roughness of composite resin

Mariana Menezes Vaz De Queiroz, Patricia Akemi Nishitani Shibasaki, Max José Pimenta Lima, Roberto Paulo Correia De Araújo, Richard Mark Foxton, Andrea Nóbrega Cavalcanti*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


OBJECTIVE: This study evaluated the surface roughness of a nanofilled composite resin submitted to different degrees of erosion and methods of control. METHODS: 120 cylindrical composite specimens (6×1.5 mm) were randomly divided into four groups, according to the surface protection against the erosive challenge [negative control, topical application of fluoride, glass-ionomer sealant, resin sealant]. After the application of the respective method, specimens were divided into three subgroups (n=10): a) absence of erosive challenge; b) 9 cycles of DES-RE; c) 18 cycles of DES-RE. Surface roughness (Ra, μm) was recorded and statistically analyzed (2-way Anova/Tukey). RESULTS: The glass-ionomer sealant exhibited less rough surfaces under all the conditions. However, the average roughness was significantly higher after 18 DES-RE cycles. CONCLUSION: Despite the potential shown by glass-ionomer sealant, it was concluded that no material prevented an increase in surface roughness of the nanofilled composite after an intense erosive challenge.

Original languageEnglish
Pages (from-to)88-93
Number of pages6
JournalRevista Odonto Ciencia
Issue number2
Publication statusPublished - 2017


  • Definitive dental restoration
  • Fluorine compounds
  • Tooth wear

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