Steiner Marcel, Menghini Giorgio, Marthaler Thomas M, Imfeld Thomas
Clinic for Preventive Dentistry, Periodontology and Cariology, Centre for Dental Medicine, University of Zurich, Zurich, Switzerland.
Schweiz Monatsschr Zahnmed. 2010;120(12):1084-1104.
In 16 rural communities of the Canton of Zurich, school-children of all age groups participated in dental examinations conducted at intervals of 4 years since 1963/64. The same standardised method was used throughout the entire period. This study documents the caries experience over a period of 45 years. From 1964 to 2009, the DMFT per 14-year-old child fell from 12.50 to 1.31, corresponding to a caries reduction of 90%. The caries experience in 8-, 10- and 12-year-olds decreased by 90% to 92%. From 1964 to 2009, the "Significant Caries Index" (the mean DMFT in the third of 12-year-olds with the highest DM*FT values) fell from 13.09 to 2.20, corresponding to a caries reduction of 83%. The observed caries decline was unexpectedly high. The effect of fluorides may explain a caries reduction of roughly 50%. A large part of the decline, however, remains unexplained. Possible causes are discussed in this paper.
在苏黎世州的16个乡村社区，自1963/64年以来，所有年龄段的学童每隔4年参加一次牙齿检查。在整个期间都采用相同的标准化方法。本研究记录了45年间的龋齿患病情况。从1964年到2009年，每14岁儿童的龋失补恒牙（DMFT）从12.50降至1.31，相当于龋齿减少了90%。8岁、10岁和12岁儿童的龋齿患病情况减少了90%至92%。从1964年到2009年，“严重龋齿指数”（DMFT值最高的12岁儿童中三分之一的平均DM*FT）从13.09降至2.20，相当于龋齿减少了83%。观察到的龋齿下降幅度出乎意料地高。氟化物的作用可能解释了约50%的龋齿减少。然而，很大一部分下降原因仍无法解释。本文讨论了可能的原因。
