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本文介绍0.2％中性NaF水溶液含漱,对6～8岁小学生初萌恒牙二年临床防龋效果观察。实验对象共448名,任分为实验和对照组各为213名和235名。以第一恒磨牙为观察对象,实验组平均每年含漱33次,对照组不作任何处理。每年复查一次。一、二年后,实验组患新龋率、龋均分别较对照组降低40.47％和47.86％,68％和68.18％。经卡方和t检验均有非常显著差异。二年后与实验前比较,实验组有24只牙齿27个牙面已矿化,而对照组有11只牙齿12个牙面已矿化。由此可见0.2％中性NaF溶液含漱对新萌出的恒牙防龋是有一定效果的。
This article describes 0.2% neutral aqueous solution of NaF gargle, 6-8 year-old pupil permanent primary motility permanent two-year clinical effect of caries prevention. A total of 448 subjects, divided into experimental and control groups each of 213 and 235. The first permanent molars as the observation object, the experimental group an average of rinse 33 times a year, the control group without any treatment. Review once a year One or two years later, the new caries rate and caries in the experimental group were reduced by 40.47% and 47.86%, 68% and 68.18% respectively compared with the control group. The chi-square and t test have very significant differences. Two years later, compared with the pre-experiment, 27 teeth of 24 teeth in the experimental group had been mineralized, while 12 teeth of 11 teeth in the control group had been mineralized. This shows that 0.2% neutral NaF solution gargle on the new eruption of permanent teeth caries have a certain effect.