Department of Restorative Dentistry, Faculty of Dentistry, University of Chile, Sergio Livingstone Pohlhammer 943, Independencia, Santiago, Chile.
Universidad Andres Bello, Sergio Livingstone Pohlhammer 943, Independencia, Santiago, Chile.
Clin Oral Investig. 2018 Dec;22(9):3013-3019. doi: 10.1007/s00784-018-2389-y. Epub 2018 Feb 17.
The aim of this study was to evaluate the esthetic perception of patients at 6 months after bleaching of non-vital teeth with 35% of hydrogen peroxide and 37% of carbamide peroxide using a walking bleach technique. We also assessed psychosocial impacts as well as the clinical effectiveness and stability of the color change.
The teeth bleaching treatment was randomly assigned to two groups according to the bleaching agent used: G1 HP = 35% of hydrogen peroxide (n = 25) and G2 CP = 37% of carbamide peroxide (n = 25). The non-vital bleaching was performed in four sessions using the walking bleach technique. The color was objectively (ΔE) and subjectively (ΔSGU) evaluated. The esthetic perception and psychosocial factors were evaluated before treatment as well as one and 6 months post-treatment using Oral Health Impact Profile (OHIP) esthetics and Psychosocial Impact of Dental Esthetics Questionnaire (PIDAQ).
The color change (ΔE) at 6 months (G1 = 14.53 ± 5.07 and G2 = 14.09 ± 6.61) for both color groups remained stable until the 6-month post-treatment (p > 0.05). There was a decrease in the values of OHIP esthetics and PIDAQ after treatment compared to the baseline (p < 0.05), and this effect was maintained 6 months post-treatment.
Both agents were highly effective and maintained the color stability at 6 months; this positively affected the esthetic perception and psychosocial impact of patients who also remained stable over time.
Non-vital bleaching produces a positive and stable impact on the esthetic perception and psychosocial factors at medium-term follow-ups.
本研究旨在评估使用走动式漂白技术对非活髓牙齿用 35%过氧化氢和 37%过氧化脲漂白 6 个月后患者的美学感知。我们还评估了社会心理影响以及颜色变化的临床效果和稳定性。
根据所用漂白剂，将牙齿漂白治疗随机分配到两组：G1 HP = 35%过氧化氢（n = 25）和 G2 CP = 37%过氧化脲（n = 25）。使用走动式漂白技术进行四次非活髓漂白。使用客观（ΔE）和主观（ΔSGU）评估来评估颜色。在治疗前以及治疗后 1 个月和 6 个月，使用口腔健康影响量表（OHIP）美学和牙科美学社会心理影响问卷（PIDAQ）评估美学感知和社会心理因素。
在 6 个月时（G1 = 14.53 ± 5.07，G2 = 14.09 ± 6.61），两组的颜色变化（ΔE）在治疗后 6 个月仍保持稳定（p > 0.05）。与基线相比，治疗后 OHIP 美学和 PIDAQ 的值下降（p < 0.05），并且这种影响在治疗后 6 个月仍保持。
两种试剂都非常有效，在 6 个月时保持颜色稳定性；这对患者的美学感知和社会心理影响产生了积极影响，并且随着时间的推移保持稳定。
非活髓漂白在中期随访时对美学感知和社会心理因素产生积极且稳定的影响。
