Montenegro-Arana A, Arana-Gordillo L A, Farana D, Davila-Sanchez A, Jadad E, Coelho U, Gomes Omm, Loguercio A D
Oper Dent. 2016 Jul-Aug;41(4):379-87. doi: 10.2341/15-240-C. Epub 2016 Feb 26.
This double-blind randomized clinical trial evaluated tooth sensitivity (TS) and the effectiveness (EF) of two types of bleaching agents (Trèswhite Ortho [TWO] and Trèswhite Supreme [TWS]) when used in patients wearing orthodontic appliances.
Forty patients between the ages of 18 and 40 years were randomly stratified, with an equal allocation rate, into two groups (n=20), according to the bleaching agent applied. Tooth color of the six maxillary anterior teeth was measured before and after the treatment with a spectrophotometer. The TS was recorded on three scales before and during the bleaching treatment.
With regard to EF, a significant reduction was found (ranging from 7.3-9.6 and 5.3-9.5 Vita scale units for TWO and TWS, respectively, p<0.001); however, there was no statistical difference between the groups (p>0.63). The number of patients with sensitivity was 58.8% and 73.3% for TWO and TWS groups, respectively (p=0.53); however, with each of the three scales used, the intensity of sensitivity was low and there was no statistical difference between TWO and TWS (p>0.05).
In spite of producing a side effect of low TS, the two bleaching treatments tested were effective for dental bleaching in patients with fixed orthodontic appliances.
本双盲随机临床试验评估了两种漂白剂（特白正畸版 [TWO] 和特白至尊版 [TWS]）用于佩戴正畸矫治器患者时的牙齿敏感性（TS）和有效性（EF）。
40 名年龄在 18 至 40 岁之间的患者根据所使用的漂白剂被随机分层，以相等的分配比例分为两组（n = 20）。使用分光光度计在治疗前后测量上颌六颗前牙的牙齿颜色。在漂白治疗前和治疗期间，采用三种量表记录牙齿敏感性。
关于有效性，发现有显著降低（TWO 和 TWS 分别降低 7.3 - 9.6 和 5.3 - 9.5 维它色阶单位，p < 0.001）；然而，两组之间无统计学差异（p > 0.63）。TWO 组和 TWS 组的敏感患者数量分别为 58.8% 和 73.3%（p = 0.53）；然而，在使用的三种量表中的每一种上，敏感强度都较低，TWO 和 TWS 之间无统计学差异（p > 0.05）。
尽管产生了低牙齿敏感性的副作用，但所测试的两种漂白治疗方法对佩戴固定正畸矫治器的患者进行牙齿漂白是有效的。
