Clinic of Orthodontics and Pediatric Dentistry, Center of Dental Medicine, University of Zurich, Switzerland.
Department of Orthodontics, University Medical Hospital of Regensburg, Germany.
Eur J Orthod. 2022 May 24;44(3):252-257. doi: 10.1093/ejo/cjab075.
Fixed orthodontic appliances might result in dental adverse effects, if sufficient oral hygiene is not maintained. Since recommendations on toothbrushing times are lacking scientific justification in orthodontic populations, the aim of the present study was to comparatively quantify the duration of toothbrushing with a manual and a powered toothbrush in two distinct age groups.
Two-centre, two-period crossover balanced randomized clinical trial with computer-generated numbers and blinding at the outcome-assessing level.
Children and adults with fixed appliances with at least 22 aligned teeth were recruited at a university clinic and private practice in Bavaria, Germany. Plaque was disclosed with staining tablets and participants brushed their teeth with their habitual technique in front of a mirror and without interference until staining was, to their own satisfaction, completely removed. The primary outcome was duration of toothbrushing in seconds. Secondary outcomes were percentage plaque reduction and questionnaire data on dental attitudes and behaviours. Data were analysed with linear mixed models.
Twenty-eight participants were randomized to the first and 27 to the second toothbrush sequence. The combined effect of age and toothbrush on the duration of toothbrushing was evident (n = 52, F(1, 50.8) = 5.1, P = 0.028). Children brushed 14.5 seconds less [n = 28, 95% confidence interval (CI) = -31.3 to 2.3, P = 0.090], yet adults 13.3 seconds more (n = 24, 95% CI = -4.6 to 31.3, P = 0.143) with the manual than powered toothbrush. Brushing times ranged from 2 minutes and 45 seconds to 3 minutes and 17 seconds with plaque reduction at 76% and good dental attitudes and behaviours.
Both children and adults with fixed appliances might equally reach an effective plaque reduction with either manual or powered toothbrushes and their habitual brushing technique in around three minutes, if plaque is visible.
DRKS-German Clinical Trials Register ID: DRKS00012463.
Oral-B Procter & Gamble.
如果不保持足够的口腔卫生，固定正畸矫治器可能会导致牙齿不良反应。由于正畸人群中缺乏关于刷牙时间的建议，因此本研究的目的是比较定量分析手动和动力牙刷在两个不同年龄组中的刷牙时间。
在德国巴伐利亚州的一所大学诊所和私人诊所进行了一项为期 2 中心、2 期交叉平衡随机临床试验，采用计算机生成数字和结果评估水平的盲法。
在大学诊所和私人诊所招募了 28 名患有固定矫治器且至少有 22 颗排列整齐的牙齿的儿童和成年人，并用染色片显示牙菌斑，参与者在镜子前用自己习惯的技术刷牙，直到牙菌斑完全去除，他们自己感到满意为止。主要结局是刷牙时间（以秒为单位）。次要结局是菌斑减少百分比和关于口腔态度和行为的问卷调查数据。使用线性混合模型进行数据分析。
28 名参与者被随机分配到第一组，27 名参与者被随机分配到第二组。年龄和牙刷对刷牙时间的综合影响明显（n = 52，F（1，50.8）= 5.1，P = 0.028）。儿童刷牙时间减少 14.5 秒[n = 28，95%置信区间（CI）=-31.3 至 2.3，P = 0.090]，而成年人使用手动牙刷刷牙时间增加 13.3 秒[n = 24，95%CI=-4.6 至 31.3，P = 0.143]。刷牙时间范围从 2 分 45 秒到 3 分 17 秒，菌斑减少率为 76%，口腔态度和行为良好。
如果牙菌斑可见，使用固定矫治器的儿童和成年人都可以使用手动或动力牙刷以及他们习惯的刷牙技术，在大约三分钟内达到同样有效的菌斑减少效果。
DRKS-德国临床试验注册中心 ID：DRKS00012463。
Oral-B Procter & Gamble。
