International journal of dental hygiene
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Randomized Controlled Trial Comparative Study
Evaluation of the bristle end-rounding patterns of children's toothbrushes using scanning electron microscopy and stereomicroscopy.
The aim of this study was to evaluate the proportions of end-rounded bristles via observations of the end patterns of various children's toothbrushes with scanning electron microscopy (SEM) and stereomicroscopy. ⋯ The types and percentages of bristle ends of children's toothbrushes marketed in Korea were various, but the amount of acceptable end-rounded bristles was low. The result, that even toothbrushes labelled as end-rounded had potential to harm oral tissue, demonstrates that quality control for rounding bristle ends as well as the labelling for end-rounded bristles is needed.