Document Detail

Effect of different surface penetrating sealants on the roughness of a nanofiller composite resin.
MedLine Citation:
PMID:  23338262     Owner:  NLM     Status:  In-Data-Review    
This study evaluated the effectiveness of different sealants applied to a nanofiller composite resin. Forty specimens of Filtek Z-350 were obtained after inserting the material in a 6x3 mm stainless steel mold followed by light activation for 20 s. The groups were divided (n=10) according to the surface treatment applied: Control group (no surface treatment), Fortify, Fortify Plus and Biscover LV. The specimens were subjected to simulated toothbrushing using a 200 g load and 250 strokes/min to simulate 1 week, 1, 3 and 6 months and 1 and 3 years in the mouth, considering 10,000 cycles equivalent to 1 year of toothbrushing. Oral-B soft-bristle-tip toothbrush heads and Colgate Total dentifrice at a 1:2 water-dilution were used. After each simulated time, surface roughness was assessed in random triplicate readings. The data were submitted to two-way ANOVA and Tukey's test at a 95% confidence level. The specimens were observed under scanning electron microscopy (SEM) after each toothbrushing cycle. The control group was not significantly different (p>0.05) from the other groups, except for Fortify Plus (p<0.05), which was rougher. No significant differences (p>0.05) were observed at the 1-month assessment between the experimental and control groups. Fortify and Fortify Plus presented a rougher surface over time, differing from the baseline (p<0.05). Biscover LV did not differ (p>0.05) from the baseline at any time. None of the experimental groups showed a significantly better performance (p>0.05) than the control group at any time. SEM confirmed the differences found during the roughness testing. Surface penetrating sealants did not improve the roughness of nanofiller composite resin.
Murilo Baena Lopes; Paulo Cesar Saquy; Sandra Kiss Moura; Linda Wang; Fabiana Mezzaroba Ortenzi Graciano; Lourenço Correr Sobrinho; Alcides Gonini Júnior
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Brazilian dental journal     Volume:  23     ISSN:  1806-4760     ISO Abbreviation:  Braz Dent J     Publication Date:  2012  
Date Detail:
Created Date:  2013-01-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9214652     Medline TA:  Braz Dent J     Country:  Brazil    
Other Details:
Languages:  eng     Pagination:  692-7     Citation Subset:  D    
Department of Dentistry, Dental School, University of North Parana, Londrina, PR, Brazil.
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