Short-term fluoride release from various aesthetic restorative materials

Area of Science:

• Dental Materials Science
• Biomaterials
• Fluoride Release Studies

Background:

• Dental restorative materials, including glass ionomers, compomers, and giomers, are utilized for their therapeutic properties, such as fluoride release.
• Understanding the short-term fluoride release kinetics of these materials is crucial for assessing their clinical efficacy and potential for caries prevention.

Purpose of the Study:

• To compare the short-term fluoride release profiles of a giomer (Reactmer), a compomer (Dyract AP), a conventional glass ionomer cement (Fuji II Cap), and a resin-modified glass ionomer cement (Fuji II LC).

Main Methods:

• Specimen discs of each material were prepared and immersed in deionized water for 28 days at 37°C.
• Fluoride release was quantified using capillary electrophoresis with field-amplified sample injection (FASI) at various time intervals.
• Statistical analysis was performed using factorial ANOVA with Scheffe's post-hoc test.

Main Results:

• Conventional and resin-modified glass ionomer cements exhibited an initial fluoride "burst" effect, which was not observed with the compomer or giomer.
• Fluoride release at day one was significantly higher for glass ionomers compared to compomers and giomers.
• Giomers demonstrated significantly higher fluoride release at day seven compared to other materials, but this trend reversed by day 28, with significantly lower release.

Conclusions:

• The initial fluoride release behavior differs significantly among giomers, compomers, and glass ionomers.
• Glass ionomers provide a substantial initial fluoride release, while giomers and compomers offer a more sustained, less intense release pattern in the short term.
• The choice of material impacts fluoride release kinetics, with implications for clinical application and caries management strategies.