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作者在四个无氟区和低氟区内选1143名,平均年龄在8.12岁的学龄儿童,进行研究。共分四组,第一组使用无氟牙膏和无氟凝胶,第二组使用氟化牙膏和无氟凝胶,第三组使用无氟牙膏和氟化凝胶,第四组使用氟化牙膏和氟化凝胶。氟化凝胶含1.23%的氟离子,PH约等于3;氟化牙膏含有等量的氟离子,同样的PH四组儿童在医生指导下,首先自己使用上述牙膏进行刷牙,漱口;然后将装
The authors selected 1143 school-aged children aged 8.12 years from four non-fluorinated and low-fluoride areas for study. Divided into four groups, the first group used fluoride-free toothpaste and non-fluoride gel, the second group used fluoride toothpaste and non-fluoride gel, the third group used fluoride toothpaste and fluoride gel, the fourth group used fluoride Toothpaste and fluorinated gel. Fluorinated gel containing 1.23% fluoride ion, PH is equal to about 3; fluoridated toothpaste contains the same amount of fluoride ions, the same PH four groups of children under the guidance of a doctor, first brush their own use of the toothpaste, mouthwash; Loaded