Abstract
The aim of this study was to compare the in vitro wear and superficial roughness of four materials (Delton Dyract Flow, Dentsply; Filtek Flow, Vitremer, 3M ESPE) used as fissure sealant in 32 extracted human molars divided in four groups (n = 8) after abrasion with toothbrush/dentifrice. Impressions of each occlusal surface were made to analyze wear and circular specimens were prepared to analyze the roughness. Teeth and specimens were mounted in a toothbrushing machine. The replicas were observed using a SEM to determine the superficial wear. Wear: there were no statistically significant differences either between Delton and Filtek Flow or between Dyract Flow and Vitremer. Roughness: there were no statistical differences between Filtek Flow and Dyract Flow, Dyract Flow and Vitremer, Vitremer and Delton., Considering the clinical practice, if caries activity is present the use of Vitremer is suggested not only for its well known fluoride release, but it presented good roughness results.
Highlights
In the past years, there has been an observable decrease in caries incidence[1,2]
Some materials used to fill teeth can be used as fissure sealant, i.e. flowable composite or flowable polyacid-modified resin composite a common material that most of the dentists have in their office
Some resin modified glass ionomers (RMGI) have been applied as fissure sealant[6,7,8,9,10], their manufacturer does not indicate them for this use
Summary
There has been an observable decrease in caries incidence[1,2]. This disease concentrates on occlusal surfaces that are responsible for about 56 to 70% of the caries in children of 5-17 years of age[3,4]. A large number of studies have shown that the use of fissure sealant is efficient in preventing caries on these surfaces[5]. Some resin modified glass ionomers (RMGI) have been applied as fissure sealant[6,7,8,9,10], their manufacturer does not indicate them for this use. The advantage of the RMGI as well as glass ionomer cements is that they release fluoride[11,12] that influences the demineralization and remineralization process[13]
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