Fluoride Recharge Ability of Resin-Based Pit and Fissure Sealant with Synthesized Mesoporous Silica Filler

Abstract:

The aim of this study was to examine the effects of active filler in resin-based pit and fissure sealant on fluoride release and recharge abilities. Mesoporous silica was synthesized from tetraethyl orthosilicate (TEOS) using sol-gel method. Resin-based sealant was incorporated with 5% w/w of filler (<45 μm): synthesized mesoporous silica (S), calcium carbonate (C), and fluoro-alumino silicate glass (F). Resin-based sealant without filler added was the control. Ten specimens of each group were separately stored in 3 mL of deionized water and the fluoride concentration, before and after fluoride recharge, were measured every 3 days (from day 3 to day 27). Fluoride release before recharge was only found in F (0.1024±0.0077 ppm) and then gradually decreased to baseline. After two recharges, the highest fluoride release was found in S (0.0804±0.0095 ppm after first recharge and 0.0601±0.0092 after second recharge), followed by F (0.0386±0.0024 ppm after first recharge and 0.0313±0.0027 ppm after second recharge), and then decreased to baseline. Fluoride recharge was not found in C and control. This result suggested that resin-based pit and fissure sealant containing synthesized mesoporous silica filler has fluoride recharge ability which might prevent secondary caries at material-enamel interface.

• Periodical: Key Engineering Materials (Volume 751)
• Pages: 586-591
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.751.586
• Online since: August 2017
• Authors: Atikom Surintanasarn, Krisana Siralertmukul, Niyom Thamrongananskul*
• Keywords: Fissure Sealant, Fluoride Recharge, Mesoporous Silica, Pit Sealant

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