Cavalcante Janine Soares, de Castellucci e Barbosa Marcelo, Sobral Marcio Costa
UFBA, Brazil.
Dental Press J Orthod. 2013 Mar 15;18(2):20.e1-8. doi: 10.1590/s2176-94512013000200008.
The purpose of this laboratory study was to evaluate changes in the pigmentation of esthetic elastomeric ligatures after immersion in a staining solution.
Sixty ligatures were selected and divided into 12 groups according to their brand and also considering their condition, i.e., unstretched or stretched. The groups were divided into: Morelli (clear), TP Orthodontics (clear), American Orthodontics (clear), 3M/Unitek (clear), American Orthodontics (pearl color) and 3M/Unitek (pearl color), separated in groups of 5 unstretched and 5 stretched ligatures. Assessment of their color changes was performed by means of digital photograph and computer analysis using Adobe Photoshop. Standardized digital photographs were taken at T₀ (before the staining process, with unstretched ligatures) and at T₁ (following the 5-days staining process). The staining solution was composed of artificial saliva and foods with staining potential. At T₁ the ligatures were either stretched or unstretched.
The results of this study showed that esthetic elastomeric ligatures are prone to staining. Among the evaluated brands, TP Orthodontics and American Orthodontics clear ligatures were the most stable. Moreover, 3M/Unitek pearl ligatures demonstrated statistically significant changes in all variables.
Esthetic elastomeric ligatures are susceptible to staining and no statistically significant difference was found between unstretched or stretched ligatures, with the sole exception of the TP Orthodontics brand. The 3M/Unitek's pearl color ligatures displayed the greatest staining potential.
本实验室研究的目的是评估美观型弹性结扎圈浸泡于染色溶液后色素沉着的变化。
选取60个结扎圈，根据其品牌以及状态（即未拉伸或已拉伸）分为12组。这些组包括：莫雷利（透明）、TP正畸（透明）、美国正畸（透明）、3M/Unitek（透明）、美国正畸（珍珠色）和3M/Unitek（珍珠色），每组有5个未拉伸和5个已拉伸的结扎圈。通过数码照片和使用Adobe Photoshop的计算机分析对其颜色变化进行评估。在T₀（染色过程前，未拉伸的结扎圈）和T₁（5天染色过程后）拍摄标准化数码照片。染色溶液由人工唾液和具有染色潜力的食物组成。在T₁时，结扎圈要么是拉伸状态，要么是未拉伸状态。
本研究结果表明，美观型弹性结扎圈容易被染色。在评估的品牌中，TP正畸和美国正畸的透明结扎圈最稳定。此外，3M/Unitek的珍珠色结扎圈在所有变量上均显示出统计学上的显著变化。
美观型弹性结扎圈易被染色，除TP正畸品牌外，未拉伸或已拉伸的结扎圈之间未发现统计学上的显著差异。3M/Unitek的珍珠色结扎圈显示出最大的染色潜力。
