Dalia Mohamed Abdel Hamid , Gouda Mohamed Mahmoud , Fatma M. El-Sharkawy , Eman Aly Abou Auf
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Fifty six specimens were prepared from Ketac Universal Aplicap where half of them was coated (CU) and the other half was uncoated (U) and 28 coated specimens from Fil Plus Aplicap™ (CF) that act as a control group. Coating was performed with Ketac Glaze. Each group was further subdivided into 4 subgroups (n = 7) according to the beverages (tea, coffee, coke and distilled water). Color changes (ΔE) and hardness (MPa) were measured by scanning spectrophotometer and Vickers's hardness (VH) test respectively. Measurements were recorded at the baseline, after 7 and 30 days of aging in each beverage. Chemical analysis of the glass powders was performed by EDXA. Additionally, the filler size was examined by the SEM. The data were statistically analyzed (P ≤ 0.05).</p></div><div><h3>Results</h3><p>The CU subgroups possessed lower ΔE than U subgroups in tea and coffee. The impact of staining beverages and aging on the ΔE was material's dependent. The CU subgroups recorded higher VH than the U and CF subgroups after aging in coke (30 days). Aging of the U subgroups in tea and coke significantly decreased its VH. The SEM revealed smaller average filler size in Ketac Universal Aplicap (7.2 μm) than Ketac Fil Plus Aplicap (17.9 μm).</p></div><div><h3>Clinical significance</h3><p>It is advisable to use the recently introduced uncoated GI restorative material for patients who are not consuming tea and/or coffee but with surface protection to maintain its color acceptability up to 3 year clinically. Not all color changes could be associated with surface degradation.</p></div>","PeriodicalId":100562,"journal":{"name":"Future Dental Journal","volume":"4 2","pages":"Pages 288-296"},"PeriodicalIF":0.0000,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.fdj.2018.05.004","citationCount":"14","resultStr":"{\"title\":\"Effect of surface protection, staining beverages and aging on the color stability and hardness of recently introduced uncoated glass ionomer restorative material\",\"authors\":\"Dalia Mohamed Abdel Hamid , Gouda Mohamed Mahmoud , Fatma M. 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引用次数: 14
摘要
目的评价涂层、染色饮料和陈化对新引进的玻璃离子(GI)修复材料颜色稳定性和硬度的影响，并确定两者之间是否存在相关性。材料与方法采用两种市售的常规胃肠道修复材料;Ketac™Universal applicap™和Ketac™Fil Plus appap™GI修复剂。共制备84个圆盘状标本(5 × 2 mm)，分为3组(n = 28)。56份来自Ketac Universal application的样品，其中一半涂覆(CU)，另一半未涂覆(U)， 28份来自Fil Plus application™(CF)的样品作为对照组。涂层采用Ketac釉。每组根据饮料(茶、咖啡、可乐和蒸馏水)进一步细分为4个亚组(n = 7)。用扫描分光光度计测定颜色变化(ΔE)，用维氏硬度(VH)测定硬度(MPa)。在每一种饮料陈酿7天和30天后，测量结果在基线时被记录下来。用EDXA对玻璃粉进行化学分析。此外，通过扫描电镜检查了填料的尺寸。对数据进行统计学分析(P ≤ 0.05)。结果茶和咖啡中CU亚群的ΔE低于U亚群。染色、饮料和陈化对ΔE的影响与材料有关。在焦炭中陈化30天后，CU亚组的VH高于U和CF亚组。茶和焦炭中U亚群的老化显著降低了其VH。SEM结果表明，Ketac Universal applicap的平均填料尺寸(7.2 μm)小于Ketac Fil Plus applicap(17.9 μm)。对于不喝茶和/或咖啡但具有表面保护以维持其颜色可接受性长达3年的患者，建议使用最近推出的无涂层胃肠道修复材料。并非所有的颜色变化都与表面降解有关。
Effect of surface protection, staining beverages and aging on the color stability and hardness of recently introduced uncoated glass ionomer restorative material
Aim
Evaluation of the effect of coating, staining beverages and aging on the color stability and hardness of recently introduced glass ionomer (GI) restorative material and to determine whether there was a correlation between these two variables.
Materials and methods
Two commercially available conventional GI restorative materials were used; Ketac™ Universal Aplicap™ and Ketac™ Fil Plus Aplicap™ GI restoratives. A total of 84 disc-shaped specimens (5 × 2 mm) were prepared and divided into 3 main groups (n = 28). Fifty six specimens were prepared from Ketac Universal Aplicap where half of them was coated (CU) and the other half was uncoated (U) and 28 coated specimens from Fil Plus Aplicap™ (CF) that act as a control group. Coating was performed with Ketac Glaze. Each group was further subdivided into 4 subgroups (n = 7) according to the beverages (tea, coffee, coke and distilled water). Color changes (ΔE) and hardness (MPa) were measured by scanning spectrophotometer and Vickers's hardness (VH) test respectively. Measurements were recorded at the baseline, after 7 and 30 days of aging in each beverage. Chemical analysis of the glass powders was performed by EDXA. Additionally, the filler size was examined by the SEM. The data were statistically analyzed (P ≤ 0.05).
Results
The CU subgroups possessed lower ΔE than U subgroups in tea and coffee. The impact of staining beverages and aging on the ΔE was material's dependent. The CU subgroups recorded higher VH than the U and CF subgroups after aging in coke (30 days). Aging of the U subgroups in tea and coke significantly decreased its VH. The SEM revealed smaller average filler size in Ketac Universal Aplicap (7.2 μm) than Ketac Fil Plus Aplicap (17.9 μm).
Clinical significance
It is advisable to use the recently introduced uncoated GI restorative material for patients who are not consuming tea and/or coffee but with surface protection to maintain its color acceptability up to 3 year clinically. Not all color changes could be associated with surface degradation.
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