Moreira Carlos Heitor Cunha, Luz Patrícia Blaya, Villarinho Eduardo Aydos, Petri Luciano Costa, Weidlich Patrícia, Rösing Cassiano Kuchenbecker
Faculty of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
J Clin Dent. 2007;18(4):123-5.
This study was designed to assess the efficacy of an ionic toothbrush on reducing plaque and gingivitis.
Twenty first-year dental students were included in the study. Ten individuals were randomly assigned to use either an ionic or a conventional toothbrush. Two periods of 28 days each were used with each brush, with a wash-out period of 14 days. A calibrated examiner used the Quigley-Hein Plaque Index (QHI) and Gingival Bleeding Index (GBI) on six sites per tooth, on all teeth, both pre- and post-brushing. The examiner was unaware of the toothbrush used by the subjects. Means were calculated, and for intra and inter-group comparisons a paired sample t-test was used (alpha = 0.05).
On buccal-lingual surfaces, both toothbrushes significantly reduced plaque; there was no statistically significant difference between the two toothbrushes (1.56 and 1.52 for ionic and conventional toothbrushes, respectively). In interdental spaces, an increase of QHI was detected for both brushes, but without significant differences between them. For the GBI on buccal/lingual surfaces, no significant differences were detected between toothbrushes. The GBI did not significantly change for either toothbrush on interdental surfaces during the study period.
The ionic and the conventional toothbrushes did not present statistically significant differences on plaque and gingival bleeding reductions.
本研究旨在评估离子牙刷在减少牙菌斑和牙龈炎方面的功效。
20名一年级牙科学生参与了该研究。10人被随机分配使用离子牙刷或传统牙刷。每种牙刷各使用两个为期28天的阶段，中间有14天的洗脱期。一名经过校准的检查人员在刷牙前后，对所有牙齿的每颗牙的六个部位使用奎格利 - 海因菌斑指数（QHI）和牙龈出血指数（GBI）进行评估。检查人员不知道受试者使用的是哪种牙刷。计算平均值，并使用配对样本t检验进行组内和组间比较（α = 0.05）。
在颊舌面，两种牙刷都能显著减少牙菌斑；两种牙刷之间没有统计学上的显著差异（离子牙刷和传统牙刷分别为1.56和1.52）。在牙间隙中，两种牙刷的QHI均有所增加，但两者之间没有显著差异。对于颊/舌面的GBI，两种牙刷之间未检测到显著差异。在研究期间，两种牙刷在牙间隙表面的GBI均未显著变化。
离子牙刷和传统牙刷在减少牙菌斑和牙龈出血方面没有统计学上的显著差异。
