中草药牙膏成市场主导 相关行业规范亟待加强

对我国中草药牙膏行业的现状及存在的主要问题进行了深入探讨与分析。目前中草药牙膏已经成为牙膏市场的主导,但是由于缺乏有效的监管,该类产品的质量良莠不齐的现象比较严重,存在的问题也比较多。相关的行业法规和规范亟待健全和完善,相关的检测方法标准体系亟待建立,以保证中草药牙膏市场的健康发展。     

牙膏灌装机构设计及流动特性分析

目的 通过设计双头平推柱塞式灌装机构,进一步提升牙膏等黏稠膏体的灌装生产效率,同时研究牙膏流变特性对灌装推力的影响,以解决当前牙膏等粘稠膏体灌装速度、精度低等问题。方法 首先选取市场占有率较高的品牌牙膏进行流变试验,然后采用经典非牛顿流体本构方程拟合获得流变曲线,最后采用数值模拟物料灌装挤出过程,获得所需要的最大灌装推力。结果 研究表明,牙膏属于非牛顿流体且具有剪切稀化的流变特性,与幂律流变模型(Powder Law黏度模型)拟合相关性为0.999 2。在最大灌装容量为200 mL、最大灌装速度为0.337 m/s时,所需推力为1 681 N。结论 可为非牛顿流体的灌装机构设计提供理论指导。     

川芎牙膏的研制及其质量标准建立

采用高效液相色谱法建立川芎牙膏中阿魏酸的含量测定方法,采用薄层色谱对牙膏中的川芎进行定性鉴别。用水煎法制得的中药干浸膏活性成分含量高,制备得到的牙膏止血作用效果好。牙膏薄层鉴别以正己烷-乙酸乙酯(3∶1)为展开剂,供试品与对照品(欧当归内酯A)在紫外光灯(254 nm)下斑点清晰、专属性强,可作为川芎龈养护牙膏定性鉴别的依据;阿魏酸在0.0193~0.4817μg·mL^-1内与峰面积呈良好线性关系,加样回收率为99.5%~101.2%。该法简便、稳定、可靠,可作为川芎龈养护牙膏中阿魏酸的质量控制方法。     

稻壳制二氧化硅在牙膏工业中的应用前景

对二氧化硅在牙膏工业中的应用以及利用稻壳制备二氧化硅的现状进行了较为全面的论述,并分析了稻壳制备牙膏用二氧化硅的前景和存在的问题。     

中国牙膏企业面临的挑战和机遇

中国牙膏市场发展迅速,竞争激烈。外资品牌凭借强大的资金和科技实力以及一流的管理和灵活和营销加紧拓展中国市场。民族品牌面对竞争应充分利用自身优势,从品牌、产品、科研和管理等方面提高综合竞争力,与外资品牌进行全方位竞争。     

Investigation of surface roughness values of various restorative materials after brushing with blue covarine containing whitening toothpaste by two different methods: AFM and profilometer

The aim of this study is to evaluate the effect of whitening toothpaste on the surface roughness of resin-based restorative materials by different measurement methods. Twenty four specimens from each of human enamel, a microhybrid composite and two nanohybrid composites discs (8.0 diameter × 4.0 mm thick) were divided into two groups (n = 12) according to toothbrushing solutıon and subjected to simulation toothbrushing (30,000 cycles) with both distilled water and whitening toothpaste containing blue covarine. Surface roughness was examined using atomic force microscopy (AFM), profilometer, and scanning electron microscopy (SEM), and the data obtained were subjected to analysis. Ra values of Tescera (TES) were significantly higher than Sonicfill 2 (SF2) when brushing both toothbrushing solutions for initial or 30,000 cycles. Roughness increased for SF2 and TES when brushed for 30,000 cycles and was higher than enamel and Herculite XRV Ultra (HXU). Human enamel was obtained lower surface roughness values brushed with toothpaste compared with distilled water. Evaluation of the surface roughness of control groups using the AFM revealed no statistically significant difference between the groups, but significant differences were found using a profilometer. The use of abrasive whitening toothpaste containing blue covarine and the number of brushing cycles affect the surface properties of human enamel and the restorative material, and also, the clinical success of the restoration. Toothbrushing for 30,000 cycles increased the surface roughness of all materials. The type of toothbrushing solution partially has affected surface roughness.     

牙膏中主要成分检验实验的综合性研究

实验测定了多种牙膏中摩擦剂的种类及其他主要成分,实验结果表明:各种牙膏中摩擦剂分别为CaCO3,SiO2,CaHPO4,Al(OH)3,同时检验了牙膏中的甘油及一些维C牙膏中的维生素C,含氟牙膏中的氟离子,定量测定了一些牙膏中摩擦剂碳酸钙的含量和二氧化硅的含量,对高中实验化学中的牙膏中某些成分的定性及定量检验提供了可行的检测方法。     

牙膏配方

详细介绍了牙膏的成分和生产工艺流程,并对牙膏的性能进行了评价。最后,分析了牙膏的创新和未来的发展情况。     

由膏体流变性确定牙膏配方的研究

通过对牙膏膏体流变性能的研究,证明了用已知的流变学数据指导牙膏配方研制的可行性,为制定牙膏配方提供了理论依据。