龋齿是我国儿童及青少年常见的多发病。笔者查阅有关文献,试制出酸性氟磷酸钠(APFN)凝胶口香糖;经临床应用,明显地降低了青少年龋病的发生率。 Dental caries is a common and frequently-occurring disease in children and adolescents in our country. The author consulted the literature, try out the acidic sodium fluoride phosphate gel (APFN) gel; clinical application, significantly reduce the incidence of adolescent caries.