The Evaluation of Color and Surface Roughness Changes in Resin based Restorative Materials with Different Contents After Waiting in Various Liquids: An SEM and AFM study

Abstract

The aim of the study was to evaluate of surface roughness and color changes of the resin-based five restorative dental materials after aging in liquids at different pH values. Totally 250 specimens were prepared, including 50 specimens for the each material group from five differentG5[GCFujiIILC]), using the 10-mm diameter and 2-mm thickness molds. A total of 50 specimens in the each group, were divided into five subgroups (n = 10) to be immerse into five liquids at different pH. After initial color and roughness measurements, samples were stored in the same liquids for 7 and 14 days and all of the measurements were repeated on the 7th and 14th days.scanning electron microscopy and atomic force microscopy analyses were performed in the all groups. When the color change(ΔE) results are examined statistically; most of the ΔE is in Fuji II LC; and at least in Filtek Z550, it was determined that cola and gastric acid had the greatest effect on ΔE averages and showed significant differences (p < .05). When the average roughness values(Ra) are analyzed statistically, the highest values were found in Fuji II LC and the lowest values were found in Filtek Z550 (p < .05). The liquids which had the highest roughness average (ΔRa) were statistically significant and gastric acid and orange juice were the most effective ones (p < .05). Asidic beverages significantly increased the surface roughness and discoloration of dental restorative materials. Research HighlightsThe results of this research showed that dental restorative materials, which are resin-based, affected both the color and surface roughness after waiting in the low pH value beverages.These results are supported with the scanning electron microscopy and atomic force microscopy images in our research. Clinically, this situation will create esthetic and functional problems in the dental filling restorations. For this reason, the results of this study seem to be important and we think that this article could be contribute to the literature. K E Y W O R D S AFM, color stability, SEM, surface roughness

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Effects of different toothpastes on the prevention of erosion in composite resin and glass ionomer cement enamel and dentin restorations

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“…A study investigating the effect of beverages with different pH values on various resin-based restorative materials (such as Z550 and Fuji II LC) by AFM and scanning electron microscopy analyses observed that glass ionomer presented a damaged surface after erosion-abrasion challenges, while CR presented no significant alterations, regardless of the toothpaste used. 36 …”

The effect of various asthma medications on surface roughness of pediatric dental restorative materials: An atomic force microscopy and scanning electron microscopy study

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