Dean D H
Department of Diagnostic Sciences, University of Mississippi, School of Dentistry.
Clin Prev Dent. 1991 Jul-Aug;13(4):25-30.
A display set of toothbrushes with graduated natural wear was shown to 268 adult respondents who were asked to indicate which brushes were "worn out." The same brushes were then compared against each other for their ability to remove artificial plaque in models of interproximal and facial surface cleansing effectiveness. Despite pronounced differences in the degree of wear among the toothbrushes, no correlation was found between visual estimation of toothbrush effectiveness and its cleansing ability in the models tested. It is possible that other variables (toothbrushing technique, force applied, manual skills) exert a greater influence on plaque removal than brush wear and explain the results of this experiment.
向268名成年受访者展示了一组呈现出不同程度自然磨损的牙刷，并要求他们指出哪些牙刷“已磨损”。然后，将这些相同的牙刷相互比较，以评估它们在邻面和面部表面清洁效果模型中去除人工牙菌斑的能力。尽管这些牙刷在磨损程度上存在明显差异，但在测试模型中，牙刷效果的视觉评估与其清洁能力之间未发现相关性。其他变量（刷牙技巧、施加的力、手工技能）可能比牙刷磨损对牙菌斑清除的影响更大，这可以解释该实验的结果。
