Operative Dentistry Department, Faculty of Dentistry, Fayoum University, Fayoum, Egypt.
BMC Oral Health. 2024 Aug 6;24(1):897. doi: 10.1186/s12903-024-04631-w.
Patients tend to favor the whitening mouthwashes as they are easily applied and affordable. This study aimed to evaluate the effect of hydrogen peroxide versus charcoal-based whitening mouthwashes on color, surface roughness, and color stability of enamel. In the current study, the whitening mouthwashes used have the ability to stop future stains due to their white seal technology.
A total of 21 permanent central incisor teeth extracted for periodontal reasons were used in the present study. Teeth roots were sectioned and crowns were mounted in self-cured acrylic resin blocks. The specimens were randomly divided into three groups (n = 7) according to the tested whitening mouthwash: Control group ‟ DW" (Distilled water), ‟OW" group: Peroxide-based mouthwash (Colgate Optic White) and ‟CP" group: Charcoal-based mouthwash (Colgate Plax Charcoal). Regarding ‟OW" and ‟CP" groups, the specimens were immersed in 20 ml of the tested mouthwash in each corresponding group for 1 min twice daily (morning and evening) for a total of 12 uninterrupted weeks. Color change was assessed using VITA Easyshade spectrophotometer and surface roughness (Ra) was measured using a white light interferometer. The specimens were stained using black tea solution and color was measured after 24 h of immersion for assessment of color stability.
Color change results revealed that both whitening mouthwashes were able to restore color comparable to the control group with no significant difference between them. Regarding surface roughness, the control group showed the highest mean Ra value, followed by ‟OW" group while ‟CP" group showed the lowest mean Ra value. While color stability after staining, the control group showed a significantly higher value than the ‟CP" and ‟OW" groups.
Hydrogen peroxide and charcoal-based whitening mouthwashes improve the color of enamel with no adverse effect on the surface roughness. Both whitening mouthwashes were beneficial to maintain the color after staining and prevent future enamel stains.
患者倾向于使用美白漱口水，因为它们易于使用且价格实惠。本研究旨在评估过氧化氢与基于活性炭的美白漱口水对牙釉质颜色、表面粗糙度和颜色稳定性的影响。在本研究中，所使用的美白漱口水具有因其白色密封技术而阻止未来污渍的能力。
本研究共使用了 21 颗因牙周原因而拔出的恒中切牙。将牙根切成段，牙冠装在自固化丙烯酸树脂块中。根据所测试的美白漱口水，将标本随机分为三组（n=7）：对照组“DW”（蒸馏水）、“OW”组：过氧化物基漱口水（高露洁皓清）和“CP”组：基于活性炭的漱口水（高露洁亮齿白）。对于“OW”和“CP”组，将标本分别浸泡在 20ml 相应组别的测试漱口水 1 分钟，每天两次（早晚），共 12 周不间断。使用 VITA Easyshade 分光光度计评估颜色变化，使用白光干涉仪测量表面粗糙度（Ra）。用红茶溶液染色后，将标本浸泡 24 小时后测量颜色，以评估颜色稳定性。
颜色变化结果表明，两种美白漱口水都能够恢复与对照组相当的颜色，彼此之间没有显著差异。关于表面粗糙度，对照组显示出最高的平均 Ra 值，其次是“OW”组，而“CP”组显示出最低的平均 Ra 值。而染色后的颜色稳定性方面，对照组显示出的数值明显高于“CP”组和“OW”组。
过氧化氢和基于活性炭的美白漱口水可以改善牙釉质的颜色，且对表面粗糙度没有不良影响。两种美白漱口水都有助于保持染色后的颜色，并防止未来的牙釉质污渍。
