The Effect of a U-shaped Toothbrush in Removing Plaque in Pre-school Children: A Randomized Controlled Trial

Abstract This randomized controlled trial aimed to evaluate the U-shaped toothbrush in dental plaque removal in preschool children in comparison with traditional toothbrushes. Thirty children aged between 4–5 years old were randomly divided into two groups; Group 1 (n = 15): children used a traditional toothbrush for 21 days and then used the U-shaped toothbrush for 21 days, while Group 2 (n = 15): children used U-shaped toothbrush for 21 days and then used the traditional toothbrush for 21 days. Plaque accumulation was evaluated by two blinded examiners using Turesky modification of the Quigley–Hein plaque index (TMQHPI) at seven-time points (pre-brushing (T0), immediately after using the first toothbrush (T1), 7 days after using the first toothbrush (T2), 21 days after using the first toothbrush (T3), immediately after using the second toothbrush (T4), 7 days after using the second toothbrush (T5), and 21 days after using the second toothbrush (T6) to determine which toothbrush achieved better plaque removal. At T1, T2, T5, and T6, the plaque accumulation reduction was significantly lower when using the U-shaped toothbrush. In conclusion, U-shaped toothbrushes improved preschool children's ability for plaque control.