Photodiagnosis Photodyn Ther:紫光LED和过氧化氢漂白牙齿是否会影响牙齿的特性?

2022-07-13 MedSci原创 MedSci原创

牙齿漂白是一种高要求的牙齿变色的治疗方法。随着时间的推移,成功率很高,而且很少发生不可逆的影响,这突出了牙齿漂白的有效性和安全性,是一种低成本的方法。

牙齿漂白是一种高要求的牙齿变色的治疗方法。随着时间的推移,成功率很高,而且很少发生不可逆的影响,这突出了牙齿漂白的有效性和安全性,是一种低成本的方法。近日,发表于Photodiagnosis Photodyn Ther的一项研究评估了使用过氧化氢(HP)和/或紫光LED的不同牙齿漂白方案后的颜色变化、釉质表面粗糙度和微硬度。

 

研究人员制备了40个牛的牙齿标本(7×7×2毫米),随机分为4组:35%HP,6%HP,6%HP+紫光LED和单独紫光LED。首先,标本用红茶染色,然后进行两次30分钟的漂白,间隔时间为7天。在每个疗程的24小时后和最后一个疗程的1周后评估颜色变化(∆L*,∆a*,∆b*和∆E00)。治疗前、24小时和最后一次治疗后1周评估牙釉质粗糙度和微硬度。通过重复测量的方差分析和Bonferroni后验或Kruskall-Wallis和Dunn检验(α=0.05)评估数据。通过扫描电子显微镜分析每组具有代表性的标本。

结果显示,6%HP+紫光LED和35%HP显示出最明显的颜色变化,而仅使用紫光LED的颜色变化最不明显。牙釉质粗糙度分析显示,6%HP+紫光LED和35%HP在两次漂白后出现了变化。在牙釉质微硬度方面没有观察到差异。

综上所述,该研究结果表明,与35%HP相比,使用6%HP+紫光LED显示出更强的漂白效果。然而,单独使用紫光LED显示出最低的颜色变化。6%HP+紫光LED和35%HP改变了牙釉质粗糙度,而任何一组都没有观察到微硬度的变化。

原始出处:

Joatan Lucas de Sousa Gomes Costa, et al., Effects of tooth bleaching protocols with violet LED and hydrogen peroxide on enamel properties. Photodiagnosis Photodyn Ther. 2022 Jun;38:102733. doi: 10.1016/j.pdpdt.2022.102733.  

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    2023-02-10 liuxiaona
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    2022-12-04 江川靖瑶
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    2022-07-13 zhouqu_8

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