International journal of paediatric dentistry
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Int J Paediatr Dent · May 2011
Number, length and end-rounding quality of bristles in manual child and adult toothbrushes.
The design of the bristles of a toothbrush can affect the overall efficacy of toothbrushing. ⋯ The variations observed in the number, length and end-rounding quality of the bristles indicate inherent shortcomings of a majority of the tested toothbrushes in plaque removal efficacy, along with the potential for irritation on the gums.