Bhuridej Patita, Levy Steven M, Warren John J, Islam Mabs, McGrady Jodi A
Department of Community Dentistry, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.
Int Dent J. 2007 Apr;57(2):71-6. doi: 10.1111/j.1875-595x.2007.tb00441.x.
To assess the effects of toothbrush size and dentifrice type/brand on amounts of dentifrice being placed when trying to replicate pictures with different amounts of dentifrice, including a pea-sized amount.
This laboratory trial used one researcher to repeatedly dispense five dentifrice products on three different child-sized toothbrushes using a standard procedure. Two sets of drawings, depicting the recommended pea-sized and larger amounts, were used as guides in an effort to place the same amount each time. Data were analysed using ANOVA.
Amounts of dentifrice placed on the two larger toothbrushes were significantly greater than those placed on the smallest toothbrush (p < 0.0001). The amounts placed on the two larger toothbrushes with similar brushing areas but different shapes were not significantly different from each other. The effect of dentifrice type/brand varied in each analysis. For pea-sized amounts, one of 10 pairwise comparisons was significant. For amounts larger than pea-sized, another pair of the 10 pairwise comparisons was significant. However, there was no significant effect of dentifrice type/brand when considering both pea-sized and larger amounts together in the same analysis.
Toothbrush size significantly affected the amount of dentifrice placed for both pea-sized and larger amounts. The amounts placed on larger size toothbrushes were greater than on the smaller size toothbrush. No consistent effects of selected dentifrices were found.
在尝试复制展示不同牙膏用量（包括豌豆大小用量）的图片时，评估牙刷尺寸和牙膏类型/品牌对牙膏挤出量的影响。
本实验室试验由一名研究人员使用标准程序，在三种不同儿童尺寸的牙刷上重复挤出五种牙膏产品。使用两组描绘推荐的豌豆大小及更大用量的图片作为指导，以便每次挤出相同的量。数据采用方差分析进行分析。
在两支较大牙刷上挤出的牙膏量显著多于在最小牙刷上挤出的量（p < 0.0001）。在刷牙面积相似但形状不同的两支较大牙刷上挤出的量彼此之间无显著差异。牙膏类型/品牌的影响在每次分析中各不相同。对于豌豆大小的用量，10 对比较中有 1 对具有显著性。对于大于豌豆大小的用量，10 对比较中的另一对具有显著性。然而，在同一分析中同时考虑豌豆大小和更大用量时，牙膏类型/品牌没有显著影响。
牙刷尺寸对豌豆大小用量和更大用量的牙膏挤出量均有显著影响。较大尺寸牙刷上挤出的量大于较小尺寸牙刷上挤出的量。未发现所选牙膏有一致的影响。
