Department of Restorative Dentistry, Faculty of Dentistry, Gaziantep University, Gaziantep, Turkey.
Aust Dent J. 2020 Dec;65(4):269-277. doi: 10.1111/adj.12786. Epub 2020 Sep 13.
This study aimed to evaluate the effects of an experimental bleaching gel made with TiO and chitosan, along with the Opalescence Boost PF and Philips Zoom bleaching agents, on tooth surface roughness, microhardness and colour.
The experimental gel, containing 6% hydrogen peroxide (HP), was evaluated against the two existing treatments, which incorporate 40% and 25% HP. For colour evaluation, 36 human premolar teeth were divided into three groups (n = 12). For surface roughness and microhardness evaluation, 72 bovine incisor samples were divided into six groups (n = 12). Data on colour alteration were analysed with the CIEDE2000 formula. Surface roughness was measured using a profilometer, and microhardness was measured with a Vickers hardness tester. ANOVA was used for statistical analysis.
There were no statistically significant differences among the groups for surface roughness, microhardness values or colour change after bleaching (P > 0.05). The lowest bleaching efficacy was observed for the 40% HP agent, and the highest efficacy was observed for the 25% HP agent (P < 0.05).
An experimental 6% HP gel containing TiO and chitosan provided effective bleaching without adverse effects on tooth surface roughness or microhardness. The use of TiO with chitosan can provide clinicians with positive results.
本研究旨在评估含有 TiO 和壳聚糖的实验性漂白凝胶与 Opalescence Boost PF 和 Philips Zoom 漂白剂对牙面粗糙度、显微硬度和颜色的影响。
实验性凝胶含有 6%的过氧化氢（HP），与含有 40%和 25%HP 的两种现有处理方法进行了比较。对于颜色评估，将 36 个人类前磨牙分为三组（n=12）。对于表面粗糙度和显微硬度评估，将 72 个牛门牙样本分为六组（n=12）。使用 CIEDE2000 公式分析颜色变化数据。使用轮廓仪测量表面粗糙度，使用维氏硬度计测量显微硬度。采用方差分析进行统计学分析。
在漂白后表面粗糙度、显微硬度值和颜色变化方面，各组之间没有统计学差异（P>0.05）。40%HP 制剂的漂白效果最低，25%HP 制剂的漂白效果最高（P<0.05）。
含有 TiO 和壳聚糖的实验性 6%HP 凝胶提供了有效的漂白效果，而不会对牙面粗糙度或显微硬度产生不利影响。TiO 与壳聚糖的联合使用可为临床医生提供积极的结果。
