Southwest Bahia State University, Department of Health, Jequié, Bahia, Brazil.
Angle Orthod. 2013 Jul;83(4):712-7. doi: 10.2319/081012-646.1. Epub 2013 Jan 11.
To evaluate, in vitro, the effect of mouthwashes with and without bleaching agents on the force of elastomeric chains.
A total of 108 elastomeric chain specimens was divided into six groups (n = 18 in each group). Two test groups were exposed to two types of commonly used mouthwashes (Plax and Listerine), and two groups were exposed to mouthwashes containing bleaching agent (Plax Whitening and Listerine Whitening). Immersion in the solutions was performed twice a day for 60 seconds. One group of control specimens remained immersed in artificial saliva throughout the entire experimental period, and the other control specimens were exposed to distilled water. Force measurements were performed at six time intervals (initial, 1 day, 7 days, 14 days, 21 days, and 28 days).
No statistically significant differences were found between the groups in the initial period (P > .05). Statistically significant differences were found between the control group and the Plax, Plax Whitening, and Listerine groups at the time intervals of 7, 14, and 21 days. In the initial period, the force was statistically significantly higher than it was in any of the other experimental periods (P < .05). The control group with distilled water and the test group with Plax Whitening maintained the most force during the experimental period.
The presence of bleaching agent has no influence on the force degradation of elastomeric chains.
体外评估含或不含漂白剂的漱口水对弹性体链的力的影响。
将 108 个弹性体链样本分为六组（每组 n = 18）。两个测试组分别暴露于两种常用漱口水（Plax 和 Listerine），两个组暴露于含漂白剂的漱口水（Plax Whitening 和 Listerine Whitening）。每天两次将样本浸入溶液中 60 秒。一组对照样本在整个实验期间始终浸入人工唾液中，另一组对照样本暴露于蒸馏水。在六个时间间隔（初始、1 天、7 天、14 天、21 天和 28 天）进行力测量。
在初始阶段，各组之间无统计学差异（P >.05）。在第 7、14 和 21 天，对照组与 Plax、Plax Whitening 和 Listerine 组之间存在统计学差异。在初始阶段，力明显高于其他任何实验阶段（P <.05）。在实验期间，含蒸馏水的对照组和含 Plax Whitening 的测试组保持最大力。
漂白剂的存在不会影响弹性体链的力降解。
