Clin Oral Investig:牙膏中含硅酸钙、磷酸钠和氟是否有助于釉质抵抗化学机械磨耗?

2019-01-13 lishiting MedSci原创

这篇研究的目的是为了评估牙膏中含有硅酸钙、磷酸钠和氟对腐蚀性磨料造成的釉质磨耗的作用。

这篇研究的目的是为了评估牙膏中含有硅酸钙、磷酸钠和氟对腐蚀性磨料造成的釉质磨耗的作用。这项随机单盲原位/体外试验包含4个阶段5天时间(每阶段对1组进行检测)。将牛牙釉质块(n=256)分配至16个志愿者及8组内。研究组为:测试牙膏,包含硅酸钙、磷酸钠和1450 ppm单氟磷酸钠;tin牙膏,包含3500 ppm氯化亚锡,700 ppm氟化铵和700 ppm氟化钠;常规牙膏,包含1450 ppm单氟磷酸钠;对照组为去离子水。半数釉质块进行酸蚀测试,半数进行酸蚀加磨耗测试。每日的口外研究方案为暴露于4种柠檬酸(2 min)并对样本施以2种牙膏30 s;随后,半数样本再拂刷15 s。釉质缺失为反应变量。数据通过two-way ANOVA和Fisher's检验进行统计学分析(p<0.05)。结果显示,对于酸蚀,测试牙膏比水更能减少釉质的缺失(4.7±3.1 and 5.8±2.5 μm, respectively, p<0.05),而与tin (4.8±2.5 μm)和常规牙膏(4.8±1.4 μm)没有明显差异(p>0.05)。测试牙膏(7.7±3.8 μm)在酸蚀加磨耗后

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    2019-09-08 szhvet
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    2019-02-15 小几洁
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    2019-01-14 明月清辉

    谢谢分享,学习了

    0

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    2019-01-13 王秀

    学习了,涨知识了!

    0

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