Department of Prosthodontics Dentistry, College of Dentistry, University of Kerbala, Durat Kerbala, 56001, Kerbala, Iraq.
J Orofac Orthop. 2024 May;85(Suppl 1):1-6. doi: 10.1007/s00056-022-00444-0. Epub 2023 Feb 2.
As the demands on esthetic orthodontic devices continue to increase, discoloration of colored elastomeric modules is still a concern for patients and orthodontics. Thus, we performed an in vivo study evaluating discoloration of stretched colored elastomeric modules (i.e., white, gray, and pink).
In all, 90 elastomeric modules of three different colors (white, gray and pink; 30 elastics from each color) were placed around brackets. The elastomeric modules were distributed and arranged randomly in the patients' four dental quadrants, and were removed after 1, 2, and 4 weeks. Color measurements were made before and after insertion into each patient's mouth. Digital images were taken with the camera of a mobile phone (iPhone X, Cupertino, CA, USA), and the variations in color were characterized using the Commission Internationale de l'Eclairage (CIE) color space system (Lab*) offered by Photoshop (Adobe, San Jose, CA, USA). Analysis of variance (ANOVA) and least significant difference (LSD) tests were used for statistical analyses.
The white elastomeric modules were most prone to discoloration, followed by the pink and then finally by the gray colored modules. The amount of discoloration resulting from a random diet practiced by the patients increased gradually (but was not significant) for all elastomeric modules studied and reach a peak after 2 weeks for the white and gray elastomeric modules, while discoloration of the pink elastomeric modules plateaued after 1 week.
Colored elastomeric modules (e.g., white, gray, and pink) discolor to variable degrees over time. Thus, patients should be advised that the consumption of food and drinks may result in discoloration of the elastomeric modules.
随着对美容正畸装置需求的不断增加，有色弹性体模块的变色仍然是患者和正畸医生关注的问题。因此，我们进行了一项体内研究，评估拉伸有色弹性体模块（即白色、灰色和粉色）的变色情况。
共有 90 个不同颜色（白色、灰色和粉色）的弹性模块（每个颜色 30 个弹性体）放置在托槽周围。弹性体模块在患者的四个牙弓象限中随机分布和排列，并在 1、2 和 4 周后取出。在插入每个患者口腔之前和之后进行颜色测量。使用移动电话（iPhone X，加利福尼亚州库比蒂诺）的相机拍摄数字图像，并使用 Photoshop（Adobe，加利福尼亚州圣何塞）提供的国际照明委员会（CIE）颜色空间系统（Lab*）来描述颜色变化。使用方差分析（ANOVA）和最小显著差异（LSD）检验进行统计分析。
白色弹性体模块最容易变色，其次是粉色，最后是灰色模块。患者随意饮食导致的变色量逐渐增加（但无统计学意义），所有研究的弹性模块均如此，白色和灰色弹性模块在 2 周后达到峰值，而粉色弹性模块在 1 周后变色趋于平稳。
有色弹性体模块（例如白色、灰色和粉色）会随时间发生不同程度的变色。因此，应告知患者，食用食物和饮料可能会导致弹性体模块变色。
