Abstract

The aim of this study was to compare the effect of different immersion protocols into various acidic media on the surface roughness of various glass ionomer-based dental restorative materials in vitro. The total number of 200 specimens were prepared from 5 different restorative material groups. Ten specimens from each group were then immersed into one of the tested beverages including; Coca-Cola, Iced-Tea, orange juice and distilled water (control). All specimens were kept in oven at 37°C for designated time periods of 1 day, 1 week, 1 month, 3 months, 6 months and 1 year and solutions were renewed weekly. Surface roughness measurements were performed at baseline and after each immersion period. The surface roughness of all glass ionomer-based restorative materials were affected by immersion with acidic media to a degree. For Glass Carbomer, there were steady increases in surface roughness in Ice Tea and orange juice (p < 0.05). The only significant increase in surface roughness of Fuji IX was found in orange juice (p < 0.05). However, the difference was not significant in coke and ice tea in comparison to distilled water (p > 0.05). When compared with distilled water, surface roughness of Chemfil Rock had increased significantly in coke and orange juice (p < 0.05). Surface roughness values of F2000 had increased significantly in coke and ice tea compared with distilled water (p < 0.05). For Dyract XP, only significant increase was found in coke compared with distilled water (p < 0.05). In conclusion, compomers were determined as the most robust materials comparing the surface roughness of the other glass ionomer based materials particularly used in pediatric dentistry. The surface degradation following immersion with acidic media is a multifactorial process, not only the pH and composition of the acidic environment, but also the type and composition of the exposed restorative material have influence on this process.

中文翻译：

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日常日常酸性饮料对基于玻璃离聚物的牙科修复生物材料表面粗糙度的影响

摘要

这项研究的目的是比较不同的浸入方案在各种酸性介质中对各种玻璃离聚物基牙科修复材料的表面粗糙度的影响。从5个不同的修复材料组中制备了200个标本。然后将每组的十个样本浸入一种测试饮料中，包括：可口可乐，冰茶，橙汁和蒸馏水（对照）。将所有样品在37°C的烘箱中保存1天，1周，1个月，3个月，6个月和1年的指定时间，并每周更换溶液。在基线和每个浸没周期后进行表面粗糙度测量。所有玻璃离聚物基修复材料的表面粗糙度均受酸性介质浸润的影响。对于玻璃卡波姆，p＜0.05）。富士IX表面粗糙度的唯一显着增加是在橙汁中发现的（p <0.05）。但是，与蒸馏水相比，可乐和冰茶的差异不明显（p > 0.05）。与蒸馏水相比，焦炭和橙汁中Chemfil Rock的表面粗糙度显着增加（p  <0.05）。与蒸馏水相比，焦炭和冰茶中F2000的表面粗糙度值显着提高（p <0.05）。对于Dyract XP，与蒸馏水相比，焦炭仅显着增加（p<0.05）。总而言之，与其他专门用于儿科牙科的玻璃离聚物基材料相比，复合材料被确定为最坚固的材料。用酸性介质浸没后的表面降解是一个多因素过程，不仅酸性环境的pH和组成，而且暴露的修复材料的类型和组成也对该过程有影响。