Abstract
BackgroundThe long-term capability of resin sealants and glass ionomer cements to release fluoride is associated to a reduction in pit and fissure caries. The regular use of fluoride varnishes/toothpastes can result in the absorption of fluoride into the sealant. The objective of the present study was to assess the fluoride release/uptake capacities of different fissure sealants.Material and MethodsThree different fissure sealants (Fuji Triage/GC, Fissurit FX/Voco and Grandio Seal/Voco) were examined. Ten discs of each material were prepared. Each disc was incubated with distilled water and then the solution analyzed for diluted for fluoride concentration, using a combination of fluoride electrode (OrionGP 1 S/N 13824, Orion Research Inc, Boston, MA, USA) connected to an expandable ion analyzer (Orion 720A, Orion Research Inc, Boston, MA, USA). Standard curves between 1 and 100 ppm F- were used to calibrate the electrode. Cumulative fluoride release was measured on days 1, 2, 3, 5, 7, 21, 35 and 49, then two different fluoride varnishes/pastes (Profluorid Varnish/Voco, MI Paste Plus/GC), were applied to the sealants tested, and fluoride release (after reuptake) was measured on days 56, 70 and 84.ResultsKruskal Wallis test confirmed significant differences in fluoride release between Fuji Triage/GC and Fissurit FX/Voco and Grandio Seal/Voco from day 1 (P < 0.001). The application of fluoride varnish Profluorid Varnish enhanced the fluoride release for all sealants (P < 0.05). MI Paste Plus enhanced the fluoride release for all sealants except for Fuji Triage/GC (P > 0.05).Conclusions The GIC-based sealant (Fuji Triage/GC) released significantly more fluoride than the resin sealants tested. The exposure to the fluoridated varnish (Profluorid Varnish) significantly recharged the sealants tested more than the CPP-ACPF toothpaste (MI Paste Plus). Key words:Fissure sealants, fluoride release, fluoride uptake, glass ionomer cements.
Highlights
Since 1960s, sealing the pits and fissures of molars and premolars is considered a highly effective method for the prevention of dental caries [1]
Studies reported that the regular use of fluoride toothpastes can result in the absorption of fluoride into the glass ionomer and that this fluoride can subsequently be released into the adjacent tooth structure [9]
The null hypothesis of the study was that there is no significant difference in fluoride release and uptake capacities between the fissure sealants tested
Summary
Since 1960s, sealing the pits and fissures of molars and premolars is considered a highly effective method for the prevention of dental caries [1]. Several in vitro and in situ studies have shown that release of fluoride either in saliva or dental plaque from glass ionomer materials is thought to protect the tooth against dental caries [6]. Additional application of topical fluoride (fluoridated dentifrice) significantly increased remineralization and decreased demineralization, respectively, in all groups independent from the material [11] This was confirmed in another in situ investigation, where glass-ionomers showed some slight caries-preventive effects compared to a fluoridated and a non-fluoridated composite when subjects performed oral hygiene without topical fluorides. The long-term capability of resin sealants and glass ionomer cements to release fluoride is associated to a reduction in pit and fissure caries. The exposure to the fluoridated varnish (Profluorid Varnish) significantly recharged the sealants tested more than the CPP-ACPF toothpaste (MI Paste Plus)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
