Methods : to treat teeth with fluoride treatments before or after etching 方法:在酸蚀前后分别用氟化泡沫对牙釉质进行氟化处理。
Conclusion : fluoride treatments can reduce the incidence rate of enamel opaque spot after orthodontic etching 结论:氟化处理可降低口腔固定正畸患者釉白斑的发生率。
Specification for low - frequency miniature equipment wires with solid or stranded conductor , fluorinated polyhydrocarbon type insulation , single 采用氟化处理过的碳氢聚合物绝缘的低频微型设备用单芯或多芯单股线规范
Results : the incidence rate of enamel opaque spot with the treated group is lower than untreated group , there is significantly statistical differences 结果:经氟化处理的牙齿,釉白斑的发生率低于对照组,有显著性差异。