Cavity fluoride
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Summary
10 papers analyzed
These studies suggest that fluoride is effective in preventing and controlling dental caries by strengthening enamel, releasing fluoride from various dental materials, and being crucial in topical applications.
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Fluoride Uptake in Cavity Walls: Insights from Recent Research
Introduction to Fluoride and Cavity Prevention
Fluoride is widely recognized for its role in preventing dental caries and promoting oral health. It works by enhancing the remineralization of tooth enamel and making teeth more resistant to acid attacks from plaque bacteria and sugars. This article synthesizes recent research on fluoride uptake in cavity walls, focusing on various fluoride-releasing materials and their effectiveness in caries prevention.
Fluoride Uptake from Different Materials
Fluoride-Releasing Materials and Cavity Walls
Several studies have investigated the fluoride uptake from different dental materials into cavity walls. A study using two-dimensional mapping by electron probe microanalysis found that fluoride uptake was higher in dentin than in enamel, with significant location dependence within the tooth. Fluoride uptake from resin materials was greater than from cements, highlighting the importance of material choice in dental restorations.
Fluoride-Containing Amalgam
Research on fluoride-containing amalgam showed that cavity walls exposed to this material had significant fluoride concentrations, ranging from 0.2% to 1.9% in dentin and 0.2% to 1.7% in enamel. This indicates that fluoride-containing amalgam can effectively deposit fluoride into cavity walls, potentially enhancing their resistance to caries.
Duraphat Varnish
The application of Duraphat varnish around amalgam restorations also resulted in substantial fluoride uptake by cavity walls, with concentrations ranging from 2000 to 6000 ppm. This suggests that fluoride varnishes can be effective in delivering fluoride to cavity walls, thereby aiding in the prevention of secondary caries.
Comparative Effectiveness of Fluoride-Releasing Adhesives
One-Step Adhesives
A study evaluating a new fluoride-releasing one-step adhesive (SI) found that it released significantly more fluoride than a non-fluoride-releasing adhesive (GB). The fluoride distribution was notably higher at the enamel and dentin interfaces, and an acid resistance zone was observed, indicating enhanced protection against caries.
Glass Ionomer Cements
Glass ionomer cements have been shown to prevent initial-stage caries in the enamel area adjacent to restorations, unlike other materials such as primers, bonding agents, and composite resins. This highlights the superior anticariogenic properties of glass ionomer cements in dental restorations.
Conclusion
The research underscores the critical role of fluoride in preventing dental caries and enhancing the durability of dental restorations. Fluoride uptake varies significantly depending on the material used, with fluoride-releasing resins, amalgams, and varnishes showing promising results in increasing fluoride concentrations in cavity walls. These findings support the continued use and development of fluoride-releasing dental materials to improve oral health outcomes.
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