Kugel Gerard, Aboushala Ayman, Sharma Shradha, Ferreira Susana, Anderson Chad
Tufts University School of Dental Medicine, Boston, MA, USA.
Compend Contin Educ Dent. 2004 Feb;25(2):119-131; quiz 132.
A randomized, parallel, examiner-blind clinical study was conducted to examine the ability of 2 toothbrushes to maintain teeth whitening after at-home bleaching. Forty subjects used a 15% carbamide peroxide tray bleaching system at home for 2 weeks per the manufacturer's instructions and then were randomly assigned to use either the Sonicare Advance power toothbrush or a manual toothbrush as part of their home oral hygiene routine for 6 months. The color of the labial surfaces of the subjects' maxillary anterior dentition was assessed before bleaching and immediately, 2 months, 3 months, and 6 months after bleaching. Color was assessed by comparison with Vita Classical shade tabs and by digital image analysis in the CIE Lab* color space. Both groups demonstrated a rebound effect at the 2-month visit and beyond, with mean Vita shade scores significantly higher than immediately after bleaching. At the 6-month evaluation, a significant difference in the amount of rebound in each group was observed. Specifically, the rebound of the Sonicare brush group was on average 1.12 Vita shades less than that of the manual brush group. The 6-month difference was confirmed through digital image analysis, with the Sonicare brush group 4.8 L* units lighter, corresponding to 2 Vita shades, and 2.1 b* units less yellow than the manual brush group. This clinical trial demonstrates that the Sonicare Advance toothbrush better maintains whitening after bleaching treatment than a manual toothbrush.
进行了一项随机、平行、检查者盲法的临床研究，以检验两种牙刷在家庭漂白后保持牙齿美白的能力。40名受试者按照制造商的说明在家中使用15%过氧化脲托盘漂白系统2周，然后被随机分配使用飞利浦声波震动牙刷或手动牙刷作为其家庭口腔卫生日常护理的一部分，为期6个月。在漂白前以及漂白后即刻、2个月、3个月和6个月对受试者上颌前牙唇面的颜色进行评估。通过与Vita经典色板比较以及在CIE Lab颜色空间中进行数字图像分析来评估颜色。两组在2个月及之后的随访中均表现出反弹效应，平均Vita色值显著高于漂白后即刻。在6个月的评估中，观察到每组反弹量存在显著差异。具体而言，飞利浦声波震动牙刷组的反弹平均比手动牙刷组少1.12个Vita色阶。通过数字图像分析证实了6个月时的差异，飞利浦声波震动牙刷组比手动牙刷组亮4.8个L单位，相当于2个Vita色阶，且黄度少2.1个b*单位。这项临床试验表明，飞利浦声波震动牙刷在漂白治疗后比手动牙刷能更好地保持牙齿美白效果。
