摘要
建立了一种评价牙膏去除外源性色斑功效的标准化体外测试方法。以牛牙作为底物,L^(*)a^(*)b^(*)色空间作为牙齿颜色的评价体系,通过染色-刷磨-测试的流程对牙膏样品的去除外源性色斑效果进行测定。对方法的关键参数进行系统优化,最终确定染色后L*值[40,50]区间的牛牙,使用L8-Ⅱ刷磨仪配套平型的中毛牙刷,刷磨频率100次/min进行600次刷磨等方法条件,建立了标准化的测试方法。结果表明该方法能有效区分不同配方样品间的差异,实验批次间相对标准偏差(RSD)小于10%,结果重现性较好。该方法具有成本低、实验周期短、操作简单等特点,为牙膏美白去渍的功效宣称提供可靠、科学的技术支撑。
A standardized in vitro method was established to evaluate the efficacy of toothpaste in extrinsic stain removal.Using bovine incisors as substrates and L*a*b*color space as tooth color evaluating system,the removal effects of toothpaste samples on extrinsic stains were determined through the process of dyeing-brushing-testing.The critical parameters of the method were systematically optimized.A standardized method was established in which an L8-Ⅱbrushing machine was equipped with flat medium-bristle toothbrush and the dyed bovine incisors with L*in the range of[40,50]were chosen to be brushed for 600 times at 100 r/min.The results showed that the established method could effectively distinguish the difference between samples.The relative standard deviation(RSD)between experimental batches was less than 10%and the results were reproducible.This method was low-cost,short-period and easily operated.It might provide reliable and scientific test results for the efficacy of whitening and stain-removed toothpastes.
作者
王继才
简锐东
谢宇
陈晓斌
周艺
谭建华
Jicai Wang;Ruidong Jian;Yu Xie;Xiaobin Chen;Yi Zhou;Jianhua Tan(Guangzhou Quality Supervision and Testing Institute,Guangzhou,Guangdong 511447,China;Hawley&Hazel Chemical Co(.Zhongshan)Ltd.,Zhongshan,Guangdong 524800,China)
出处
《日用化学工业（中英文）》
CAS
北大核心
2023年第9期1101-1107,共7页
China Surfactant Detergent & Cosmetics
基金
广东省市场监督管理局科技项目(2021CZ06)。
关键词
牙膏
外源性色斑
去除
功效评价
toothpaste
extrinsic stain
removal
efficacy evaluation
