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Effects of fluoride release from bis-GMA/TEGDMA resin regulated by γ-methacryloxypropyltrimethoxysilane on demineralization of bovine enamel

Paper ID Volume ID Publish Year Pages File Format Full-Text
13356 851 2002 6 PDF Available
Title
Effects of fluoride release from bis-GMA/TEGDMA resin regulated by γ-methacryloxypropyltrimethoxysilane on demineralization of bovine enamel
Abstract

We previously demonstrated that fluoride release from resins could be regulated by the polysiloxane coating of the fluoride additives. The present study investigated the effects of regulated fluoride release from resin on enamel demineralization in vitro. Bovine enamel cavities were restored with bis-GMA/TEGDMA resins containing 50 wt% NaF powders treated with or without γ-methacryloxypropyltrimethoxysilane. Specimens were immersed in distilled water that was changed daily to measure the amount of fluoride released over 40 days, and thereafter subjected to pH-cycling. Microradiographic observations were performed to determine total mineral loss (ΔZ) and lesion depth (Ld) on the enamel. In addition, fluorine distribution was analyzed using EPMA. The resin containing untreated NaF exhibited high-rate and short-term fluoride release, whereas the resin containing treated NaF released low concentrations of fluoride over a longer period. The former showed high fluorine uptake in the adjacent enamel. In contrast, the latter showed high fluorine uptake not only in the adjacent enamel, but also in a wider area of enamel surface. The latter also showed lower ΔZ and Ld values in the surrounding enamel, indicating a high inhibitory effect on caries formation. Therefore, it is suggested that regulated fluoride release from the resin based on polysiloxane coating is effective in preventing caries formation.

Keywords
Resin; Fluoride release; Regulation; Polysiloxane; Enamel; Demineralization
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Effects of fluoride release from bis-GMA/TEGDMA resin regulated by γ-methacryloxypropyltrimethoxysilane on demineralization of bovine enamel
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 23, Issue 16, August 2002, Pages 3503–3508
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us