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KMID : 1035320170440030281
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Korean Society for Dental Materials
2017 Volume.44 No. 3 p.281 ~ p.289
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Influence of carbonated water on degradation of dental resin-based pit and fissure sealant
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Kim Hyun-Jin
Shin Hae-Eun
Min Hee-Hong
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Abstract
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The critical oral environment conditions (i.e. pH changes and humidity) may increase resin-based materials degradation over time. The purpose of this study was to determine the influence of carbonated waters (acidic beverages) on the degradation of resin based fit and fissure sealant materials. Conventional dental sealant material (Charmseal) was selected for this study. Disc-shaped resin specimens (8 mm in diameter and 1 mm in thickness) were prepared according to manufacturers’ instructions. Resin specimens were measured the initial roughness (Ra). And then, the specimens were individually immersed in 5 mL of the storage solutions (Distilled water, Trevi, Perrier, Chojung and Coca-Cola) and stored at 37°C. After 72 hours of storage, the specimens surface roughness readings were done. The concentration of residual monomer released was determined by high performance liquid chromatography (HPLC). The resin specimen surface morphology was evaluated by scanning electron microscopy (SEM). Statistical analysis was performed by Kruskal-Wallis and Duncan test. In the present study, we observed that the increased the surface roughness of resin specimens after immersed in carbonated waters (p<0.05). Surface morphological changes were observed in a situation of acid challenge. In addition, acidic conditions lead to a higher monomer release from resin-based materials. Therefore, we concluded that under acidic conditions, the resin-based sealant materials were more susceptible to degradation.
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KEYWORD
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Carbonated water, Degradation, Dental resin-based pit and fissure se
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