联合漂白技术与家庭漂白——一项单盲随机对照试验。

Combined Bleaching Technique Versus At-home Bleaching-A Single-blind Randomized Controlled Trial.

机构信息

Laína Vochikovski, MS, PhD student, Department of Restorative Dentistry, State University of Ponta Grossa, Ponta Grossa, Paraná, Brazil.

Márcia Rezende, DDS, MS, PhD, Department of Restorative Dentistry, Paulo Picanço School of Dentistry, Fortaleza, Ceará, Brazil.

出版信息

Oper Dent. 2022 May 1;47(3):247-257. doi: 10.2341/20-283-C.

DOI:10.2341/20-283-C

PMID:35653595

Abstract

OBJECTIVE

To compare the efficacy, color stability, and tooth sensitivity (TS) of combined bleaching, using a modified protocol with at-home bleaching.

METHODS

Eighty participants were randomized into two groups. In the combined group, a desensitizing gel was applied (10 minutes) prior to in-office bleaching (35% hydrogen peroxide (H2O2), 2×15 minute applications) and at-home bleaching (4% H2O2, 2×30 minutes for 21 days) started the next day. In the at-home group, only the at-home bleaching was performed. Color was recorded at the beginning and postbleaching with two scales (VITA Classical and Bleachedguide) and Easyshade spectrophotometer. The TS was recorded daily with a 0-10 visual analogue scale (VAS) and five-point numeric rating scale (NRS).

RESULTS

A 40% lower risk (RR=1.4; 95% CI 1.1-1.9) was observed in the at-home group. Higher color change and intensity of TS [mean difference 2.3 (95% CI 1.3-3.3) in the VAS] was observed in the first week for the combined group. After the end of the protocol, a bleaching degree was detected for both groups, with no significant difference between both groups (p>0.05).

CONCLUSION

The combined group produced a slightly higher degree of color change than at-home bleaching but with a higher risk and intensity of TS.

摘要

目的

比较改良家庭漂白联合诊室漂白的疗效、颜色稳定性和牙齿敏感（TS）。

方法

80 名参与者随机分为两组。在联合组中，在诊室漂白（35%过氧化氢（H2O2），2×15 分钟应用）前应用脱敏凝胶（10 分钟），并于次日开始家庭漂白（4% H2O2，2×30 分钟，共 21 天）。在家庭组中，仅进行家庭漂白。使用两种比色计（VITA Classical 和 Bleachedguide）和 Easyshade 分光光度计在漂白前和漂白后记录颜色。使用 0-10 视觉模拟量表（VAS）和 5 分数字评分量表（NRS）每天记录 TS。