Sripriya N, Shaik Hyder Ali K H
Department of Preventive and Community Dentistry, MS Ramaiah Dental College, Bangalore - 560 054, India.
J Indian Soc Pedod Prev Dent. 2007 Apr-Jun;25(2):76-81. doi: 10.4103/0970-4388.33452.
The aim of the study was to compare the efficacy of four most commonly used bristle designs of toothbrushes in plaque removal.
The study was a randomized 4 cell, examiner blind cross-over design assessing the plaque removal efficacy of all four brushes on a single occasion. Sixteen subjects aged 14-15 years participated in the study. On day 1 of each test period, the subjects were rendered plaque free and were asked to suspend oral hygiene practices for 24 hours. On day 2, the subjects were scored for plaque prior to brushing using the Turesky-Gilmore modification of Quigley-Hein plaque index. The subjects then brushed with the allocated toothbrush for 2 minutes and the post-brushing plaque scores were assessed. A wash-out period of 4 days was allowed between the test periods.
All the brushes showed a significant reduction in the post-brushing plaque scores ( p < 0.001). The mean reduction in the plaque scores for all the brushes was around 53%. The percentage plaque reduction was greater in the anterior surface than the posterior surface (59.6 +/- 7.45% vs. 49.83 +/- 4.35%). The percentage plaque reductions in the upper, lower, buccal and lingual surfaces were similar. No significant difference in the reduction of plaque scores between the four brushes was seen.
The data derived from the study supports the contention of many researchers that there is no single superior design of manual toothbrush. Though minor and some site differences in favor of the brushes were seen, they were not statistically significant.
本研究的目的是比较四种最常用刷毛设计的牙刷在去除牙菌斑方面的效果。
本研究采用随机四组、检查者盲法交叉设计，一次性评估所有四种牙刷的牙菌斑清除效果。16名年龄在14 - 15岁的受试者参与了该研究。在每个测试期的第1天，使受试者牙菌斑清除干净，并要求他们暂停口腔卫生措施24小时。在第2天，使用Quigley - Hein菌斑指数的Turesky - Gilmore修正版在刷牙前对受试者的牙菌斑进行评分。然后受试者用分配的牙刷刷牙2分钟，并评估刷牙后的牙菌斑评分。在测试期之间允许有4天的洗脱期。
所有牙刷在刷牙后的牙菌斑评分均显著降低（p < 0.001）。所有牙刷的菌斑评分平均降低约53%。前牙表面的菌斑减少百分比高于后牙表面（59.6 +/- 7.45%对49.83 +/- 4.35%）。上、下、颊侧和舌侧表面的菌斑减少百分比相似。四种牙刷在菌斑评分降低方面未见显著差异。
本研究得出的数据支持了许多研究人员的观点，即没有一种单一的手动牙刷设计是 superior 的。虽然观察到有利于某些牙刷的微小和一些部位差异，但它们在统计学上并不显著。 （注：superior 这里根据语境推测可能是“更优越的”之类含义，但原英文表述不太完整准确）
