Clin Oral Investig:低浓度过氧化氢诊室漂白的长效性、功能性、安全性和对生活质量的影响:一项临床随机试验

2018-09-29 lishiting MedSci原创

这篇研究的目的是为了评估低浓度过氧化氢诊室漂白的长效性、功能性、安全性和对口腔健康相关生活质量的影响。

这篇研究的目的是为了评估低浓度过氧化氢诊室漂白的长效性、功能性、安全性和对口腔健康相关生活质量的影响。

这项临床随机平行双盲试验是通过混合LED/激光灯激发6%或15%过氧化氢(HP)对54名受试者实施诊室内漂白。牙齿颜色通过Classical Vita标度和分光光度计分别在治疗前(T1)、完成漂白后1周(T2)、漂白后2周 (T3)和1个月(T4)及6个月(T5)进行评估。通过可视化数字量表和改良牙龈指数检测牙齿的敏感性以及牙龈激惹情况。通过口腔对日常行为的影响评估对生活质量的影响。使用Friedman, Mann-Whitney和McNemar检验分析数据(p<0.05)。

结果显示,HP组有15%存在T1至T4 (p=0.002)和T1至T5的颜色变化(ΔE) (p<0.001)。2组参数L, a*和b*在T3, T4和T5与T1相比均存在明显差异。在6个月的随访中,57.1%的HP6和43.7%的HP15%的受试者从B1下移至更暗的颜色。而对于牙齿的敏感性、牙龈受激惹情况以及对生活质量的影响在2组之间没有显著性差异。

结论:2种浓度均具有漂白效果,但是15%的HP在6个月随访中的颜色稳定性要高于6%的HP。2种不同浓度的药物均表现出较低程度的牙齿敏感性、牙龈激惹,并且并不影响受试者口腔健康相关的生活质量。

临床意义:尽管在治疗过程中,与6%过氧化氢相比存在更高的敏感性,但是15%过氧化氢在漂白结束和6个月随访中展现出更好的漂白效果以及更好的颜色稳定性。使用15%过氧化氢会得到更好的结果。

原始出处:


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    2019-02-05 小几洁
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这项临床随机双盲试验的目的是为了比较采用15%和35%过氧化氢(HP15%和HP35%)实施诊室内漂白后的牙齿敏感性(TS)、漂白效力和细胞因子差异。

Oncol Rep:过氧化氢可通过诱导细胞死亡和G1期阻滞来抑制肺癌细胞的生长

过氧化氢(H2O2)经常用于培养细胞以诱导氧化应激。本研究调查了外源性H2O2对Calu-6和A549肺癌细胞的作用。MTT测定显示,H2O2抑制Calu-6和A549细胞的生长,24小时IC50值分别为~50和100μM。用H2O2处理的细胞表现出细胞在G1期停滞。H2O2呈剂量依赖性地增加了这些细胞的死亡(台盼蓝阳性)和膜联蛋白V-FITC染色细胞的数量,伴随着Bcl-2和前半胱天冬酶-3水平

KIDNEY INT:CKD小鼠超氧阴离子和过氧化氢对入球小动脉肌源性收缩调节作用相反!

因此,入球小动脉中通过NOX2/p47phox产生的超氧阴离子可以对抗通过NOX4/POLDIP2产生的过氧化氢引起的CKD个体入球小动脉肌源性收缩受损。

J Immunol:免疫调节新机制的研究或为炎症治疗提供新方向!

药学和药理学的研究人员发现了一个重要的结果,可能带来新的抵抗慢性炎症的治疗方法。

Sci Rep:基于过氧化氢光解的辅助疗法可有效治疗中重度牙周炎

采用牙周非手术疗法治疗严重的牙周炎的效果并不理想。本研究旨在评估基于过氧化氢(H2O2)光解的抗菌化学疗法联合根面平整术(RD)治疗中重度牙周炎的临床疗效。采用随机对照试验研究设计,纳入了53名患者的142颗患者进行研究。将测试牙齿随机分配到三个处理组:组1,RD + H2O2光解;组2,RD+局部药物应用(派力奥);组3,仅RD。治疗后进行临床和微生物学检查直至第12周。结果显示,每次治疗期间检

Free Radic Biol Med:HOCl或通过蛋白质氧化和氯胺形成的间接机制杀死侵入的微生物

HOCl可能通过涉及蛋白质氧化和氯胺形成的间接机制杀死侵入的微生物。