Laher Ashraf, Kroon Jeroen, Booyens Susanna J
Department of Orthodontics, School of Dentistry, University of Pretoria.
SADJ. 2003 Jul;58(6):231, 234-7.
A single-blind, cross-over study design was used to evaluate the effectiveness of four different manual toothbrushes and to determine whether patient toothbrush preference is directly related to plaque control in patients with fixed orthodontic appliances. The brushes evaluated were Orthodontic Oral-B, Oral-B Advantage 30, Colgate Precision and Aquafresh. Forty-six subjects, aged 11 to 27, undergoing fixed orthodontic treatment were screened and recruited with parental consent. Subjects were randomly allocated into four groups. All subjects had their teeth scaled and polished at week 0. Baseline recordings of PI and GI were done four weeks later and the first toothbrush was given. After using the toothbrush for a period of 2 weeks the PI and GI were again recorded and teeth were again scaled and polished. A period of four weeks elapsed before new baseline recordings were done and the sequence followed as described for the first toothbrush. This was done until all subjects had used all four toothbrushes. At the end of the clinical trial, each subject was asked which toothbrushes they preferred. PI and GI values were relatively low at baseline as well as after the use of the toothbrushes. General linear model procedure showed no statistical difference between the Mean Plaque Index (MPI) before and after use of each toothbrush as well as the Difference in Mean Plaque Index (DMPI). There was a slight difference in the Difference in Mean Gingival Index (DMGI) between the Colgate Precision and Aquafresh toothbrush. For all the other comparisons general linear model procedure showed no difference between the Mean Gingival Index before and after use of each brush. There was no correlation between the toothbrush preferred by the patient and oral cleanliness as measured by DMPI and DMGI.
采用单盲交叉研究设计来评估四种不同手动牙刷的效果，并确定在佩戴固定正畸矫治器的患者中，患者对牙刷的偏好是否与菌斑控制直接相关。所评估的牙刷分别是正畸 Oral-B、Oral-B 优势 30、高露洁精准牙刷和佳洁士。对 46 名年龄在 11 至 27 岁之间、正在接受固定正畸治疗的受试者进行了筛选，并在获得家长同意后招募。受试者被随机分为四组。所有受试者在第 0 周进行了洗牙和牙齿抛光。四周后进行菌斑指数（PI）和牙龈指数（GI）的基线记录，并发放第一支牙刷。使用牙刷 2 周后，再次记录 PI 和 GI，并再次进行洗牙和牙齿抛光。在进行新的基线记录之前，间隔四周，然后按照第一支牙刷的描述进行后续操作。直到所有受试者都使用了所有四支牙刷。在临床试验结束时，询问每位受试者他们更喜欢哪种牙刷。PI 和 GI 值在基线时以及使用牙刷后都相对较低。一般线性模型程序显示，使用每支牙刷前后的平均菌斑指数（MPI）以及平均菌斑指数差异（DMPI）之间没有统计学差异。高露洁精准牙刷和佳洁士牙刷的平均牙龈指数差异（DMGI）略有不同。对于所有其他比较，一般线性模型程序显示使用每支牙刷前后的平均牙龈指数没有差异。患者偏好的牙刷与通过 DMPI 和 DMGI 衡量的口腔清洁度之间没有相关性。
