The effects of different levels of brush end rounding on gingival abrasion: a double-blind randomized clinical trial.
Nienke Lisette Hennequin-HoenderdosD E SlotE Van der SluijsR AdamJ M GrenderG A Van der WeijdenPublished in: International journal of dental hygiene (2016)
Based on the results of this experiment involving professional brushing, it can be concluded that 40-50% or greater end-rounded filaments can provide a significant reduction in gingival abrasions compared to non-end-rounded filaments.
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