Ruhlman C D, Bartizek R D, Biesbrock A R
Ruhlman Clinical Resources, Eugene, Oregon, USA.
Am J Dent. 2001 Aug;14(4):191-4.
Recently, a new power toothbrush has been marketed with a design that fundamentally differs from other marketed power toothbrushes, in that it incorporates a round oscillating head, in conjunction with fixed bristles. The objective of this study was to compare the plaque removal efficacy of a control manual toothbrush (Colgate Navigator) to this experimental power toothbrush (Crest SpinBrush) following a single use.
This study was a randomized, controlled, examiner-blind, 4-period crossover design which examined plaque removal with the two toothbrushes following a single use in 40 completed subjects. Plaque was scored before and after brushing using the Turesky Modification of the Quigley-Hein Index.
Baseline plaque scores were 1.77 for both the experimental toothbrush and control toothbrush treatment groups. With respect to all surfaces examined, the experimental toothbrush delivered an adjusted (via analysis of covariance) mean difference between baseline and post-brushing plaque scores of 0.48 while the control toothbrush delivered an adjusted mean difference of 0.35. The experimental toothbrush removed, on average, 37.6% more plaque than the control toothbrush. These results were statistically significant (P< 0.001). With respect to buccal surfaces, the experimental toothbrush delivered an adjusted mean difference between baseline and post-brushing plaque scores of 0.54 while the control toothbrush delivered an adjusted mean difference of 0.42. This represents 27.8% more plaque removal with the experimental toothbrush compared to the control toothbrush. These results were also statistically significant (P= 0.001). Results on lingual surfaces also demonstrated statistically significantly (P< 0.001) greater plaque removal for the experimental toothbrush with an average of 53.4% more plaque removal.
最近，一款新型电动牙刷已投放市场，其设计与其他已上市的电动牙刷有根本区别，它采用圆形振荡刷头并配有固定刷毛。本研究的目的是比较一款对照手动牙刷（高露洁 Navigator）与这款实验性电动牙刷（佳洁士 SpinBrush）单次使用后的牙菌斑清除效果。
本研究采用随机、对照、检查者盲法的 4 期交叉设计，对 40 名完成实验的受试者单次使用这两种牙刷后的牙菌斑清除情况进行了检查。使用 Turesky 对 Quigley - Hein 指数的修正版在刷牙前后对牙菌斑进行评分。
实验性牙刷和对照牙刷治疗组的基线牙菌斑评分均为 1.77。在所有检查的牙面上，实验性牙刷在基线和刷牙后牙菌斑评分之间的调整后（通过协方差分析）平均差异为 0.48，而对照牙刷的调整后平均差异为 0.35。实验性牙刷平均比对照牙刷多清除 37.6%的牙菌斑。这些结果具有统计学显著性（P < 0.001）。在颊面，实验性牙刷在基线和刷牙后牙菌斑评分之间的调整后平均差异为 0.54，而对照牙刷的调整后平均差异为 0.42。这表明实验性牙刷比对照牙刷多清除 27.8%的牙菌斑。这些结果也具有统计学显著性（P = 0.001）。舌面的结果也显示实验性牙刷的牙菌斑清除在统计学上有显著差异（P < 0.001），平均多清除 53.4%的牙菌斑。
