Kaur Navneet, Nikhil Vineeta
Department of Conservative Dentistry and Endodontics, Subharti Dental College and Hospital, Swami Vivekanand Subharti University, Meerut, Uttar Pradesh, India.
J Conserv Dent. 2022 Jan-Feb;25(1):72-77. doi: 10.4103/Jcd.Jcd_140_21. Epub 2022 May 2.
Whey protein supplements might be a potential risk factor for the restoration surface due to its pH and lactose content.
The study aimed to evaluate the effect of whey protein beverages on the microhardness of four restorative composites with different microstructures (Filtek Z 350XT, Filtek Z 250XT, Filtek Bulk Fill (FBF), and Filtek 60).
Forty disc-shaped samples from each material (in total 160) were prepared and wet polished. The samples of each group were randomly divided into four subgroups and subjected to four immersion media namely, whey protein Concentrate (WPC), whey protein Isolate (WPI), whey protein water (WPW), and distilled water (DW). The immersion protocol was performed twice for 10 min daily for 30 days followed by immersion in artificial saliva for another 10 min and stored in DW till the next cycle. The pre immersion and post immersion microhardness of all the samples were recorded with a Microhardness Tester FM-800. Data obtained were statistically analyzed using SPSS 25 software.
All composites exhibited decline in microhardness, except for FBF. 60 composites which showed the highest decline in microhardness. WPC and WPI caused the greatest reduction in microhardness compared to WPW.
由于乳清蛋白补充剂的pH值和乳糖含量，其可能是修复体表面的一个潜在风险因素。
本研究旨在评估乳清蛋白饮料对四种具有不同微观结构的修复性复合材料（Filtek Z 350XT、Filtek Z 250XT、Filtek Bulk Fill（FBF）和Filtek 60）显微硬度的影响。
制备每种材料的40个圆盘形样品（共160个）并进行湿抛光。每组样品随机分为四个亚组，分别置于四种浸泡介质中，即浓缩乳清蛋白（WPC）、分离乳清蛋白（WPI）、乳清水（WPW）和蒸馏水（DW）。浸泡方案每天进行两次，每次10分钟，持续30天，然后再在人工唾液中浸泡10分钟，并储存在DW中直至下一个周期。使用FM - 800显微硬度测试仪记录所有样品浸泡前和浸泡后的显微硬度。使用SPSS 25软件对获得的数据进行统计分析。
除FBF外，所有复合材料的显微硬度均下降。Filtek 60复合材料的显微硬度下降幅度最大。与WPW相比，WPC和WPI导致的显微硬度降低最大。
