Heinrich-Heine University, Operative and Preventive Dentistry and Endodontics, Duesseldorf, Germany.
Oper Dent. 2009 Nov-Dec;34(6):635-41. doi: 10.2341/08-069-C.
The current study assessed the efficacy of three current bleaching methods.
Seventy-five healthy subjects (45 female; 30 male) with anterior teeth, having a Vita Shade score of A2 or darker, participated in the study. The subjects were randomly assigned to one of three treatment groups: Group A: home-bleaching (illumine Home, 10% carbamide peroxide, trays, overnight, for two weeks), Group B: in-office bleaching (Illumine Office, 15% hydrogen peroxide, trays for 45 minutes, three times over three weeks), Group C: Whitestrips (strips, twice a day, 30 minutes each for two weeks). Following the screening visit, three weeks prior to the baseline examination, all subjects received a dental prophylaxis. The color of the teeth was determined using a colorimeter (ShadeEye NCC) and a custom-made stent at baseline (E0), immediately after completion of the bleaching (E3) and three months after treatment (E4). All subjects received oral hygiene instructions and a toothbrush and toothpaste for oral home care during the study period. The change of tooth color was determined for each treatment regimen between baseline and E3 and baseline and E4 and was statistically analyzed performing the Kruskal Wallis test and the Mann-Whitney-U test. The significance level was set atp < 0.01.
The dropout rate was 0%. Mean (SD) deltaE* (overall color change) from baseline to immediately after treatment was 6.57 (2.13) for Group A, 5.77 (1.72) for Group B and 3.58 (1.57) for Group C. The mean (SD) tooth color change from baseline to three months after treatment deltaE* was: 4.98 (1.34) for Group A, 4.59 (1.42) for Group B and 2.99 (1.39) for Group C. Significant differences were found between home bleaching and Whitestrips, as well as between in-office bleaching and Whitestrips, but not between home-bleaching and in-office bleaching during the same time.
Using an objective color measurement device, home bleaching and in-office bleaching were found to be superior to Whitestrips. Home bleaching and in-office bleaching were equally efficient for bleaching teeth and maintaining the results for up to three months.
本研究评估了三种当前漂白方法的疗效。
75 名具有前牙、Vita Shade 评分为 A2 或更暗的健康受试者（45 名女性；30 名男性）参加了这项研究。受试者被随机分配到三个治疗组之一：组 A：家庭漂白（illumine Home，10%过氧脲，托盘，每晚，持续两周），组 B：诊室漂白（Illumine Office，15%过氧化氢，托盘 45 分钟，三周内三次），组 C：Whitestrips（条，每天两次，每次 30 分钟，持续两周）。在筛选就诊后，在基线检查前三周，所有受试者均接受了牙齿洁治术。使用比色计（ShadeEye NCC）和定制支架在基线（E0）、漂白完成后即刻（E3）和治疗后三个月（E4）确定牙齿的颜色。所有受试者在研究期间均接受口腔卫生指导和牙刷及牙膏进行口腔家庭护理。在每个治疗方案中，在基线和 E3 之间以及基线和 E4 之间确定牙齿颜色的变化，并通过 Kruskal Wallis 检验和 Mann-Whitney-U 检验进行统计学分析。显著性水平设为 p < 0.01。
脱落率为 0%。组 A 从基线到治疗后即刻的平均（SD）deltaE*（整体颜色变化）为 6.57（2.13），组 B 为 5.77（1.72），组 C 为 3.58（1.57）。从基线到治疗后三个月的平均（SD）牙齿颜色变化 deltaE*为：组 A 为 4.98（1.34），组 B 为 4.59（1.42），组 C 为 2.99（1.39）。家庭漂白和 Whitestrips 之间以及诊室漂白和 Whitestrips 之间存在显著差异，但在同一时间内家庭漂白和诊室漂白之间没有差异。
使用客观的颜色测量装置，家庭漂白和诊室漂白均优于 Whitestrips。家庭漂白和诊室漂白在漂白牙齿和维持结果长达三个月方面同样有效。
