Weeks K J
Br Dent J. 1990 Oct 20;169(8):258-60. doi: 10.1038/sj.bdj.4807344.
In 1987 an assessment of mottling in incisor teeth was carried out on a random sample of 12-year-old children in Liverpool, England. The number of children examined was 471. All of these children were born and had lived in Liverpool when the fluoride content of the water supply had averaged 0.1 parts/10(6). During this time the market share of fluoride toothpastes had increased from 5% in the early 1970s to 91.8% in 1987. The mouth prevalence of mottling was found to be 31.1%. The tooth prevalence of mottling was found to be 7.83%. There was no sex difference. The data obtained was compared with findings in 1974-75 in Liverpool before the advent of fluoride toothpastes. The data suggests that there has been a decrease in the prevalence of mottling in Liverpool since 1974-75.
1987年，对英格兰利物浦12岁儿童的一个随机样本进行了门牙斑纹情况评估。接受检查的儿童有471名。所有这些儿童均在当地出生并生活，当时供水的氟含量平均为0.1 ppm。在此期间，含氟牙膏的市场份额从20世纪70年代初的5%增至1987年的91.8%。发现斑纹的口腔患病率为31.1%，牙齿患病率为7.83%。不存在性别差异。将获得的数据与1974 - 1975年利物浦在含氟牙膏出现之前的调查结果进行了比较。数据表明，自1974 - 1975年以来，利物浦斑纹的患病率有所下降。
