Kowitz G M, Nathoo S A, Wong R
University of California, Los Angeles, School of Dentistry.
Compend Suppl. 1994(17):S635-9.
A 2-week study was conducted to compare the tooth-whitening efficacy of two 10% carbamide peroxide products: Colgate Platinum Professional Toothwhitening System and Rembrandt Lighten Bleaching Gel. Fifty subjects were divided into two groups and assigned a product to use for 2 weeks. Change in tooth color was measured by reflectance spectroscopy at the initiation of study, at 1 week, and at 2 weeks into the study. Color change was calculated using the color-difference equation established by the Commission International de L'Eclairage. Results showed that Colgate Platinum was 62% more effective at tooth whitening after 1 week and 83% more effective after 2 weeks of treatment vs Rembrandt. At the termination of the study, the mean color difference (deltaE) for Colgate Platinum was 4.29 and 2.34 for Rembrandt. Statistical analysis demonstrated that the Colgate product is significantly superior at increasing tooth whiteness, increasing tooth lightness, reducing redness, and reducing yellowness. In this study, no adverse reactions were noted on clinical examination and none were reported by panelists with normal healthy dentition.
进行了一项为期2周的研究，以比较两种10%过氧化脲产品的牙齿美白效果：高露洁铂金装专业牙齿美白系统和瑞姆布兰特亮白漂白凝胶。50名受试者被分为两组，并分配一种产品使用2周。在研究开始时、第1周和第2周，通过反射光谱法测量牙齿颜色的变化。使用国际照明委员会建立的色差方程计算颜色变化。结果显示，与瑞姆布兰特相比，高露洁铂金装在治疗1周后牙齿美白效果高62%，在治疗2周后高83%。在研究结束时，高露洁铂金装的平均色差（ΔE）为4.29，瑞姆布兰特为2.34。统计分析表明，高露洁产品在增加牙齿白度、提高牙齿亮度、减少泛红和减少泛黄方面明显更优。在本研究中，临床检查未发现不良反应，牙齿正常健康的小组成员也未报告任何不良反应。
