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WHO Global Oral Data Bank, 1986-96: an overview of oral health surveys at 12 years of age.

The global oral health situation of 12-year-old children--decayed, missing, filled teeth (DMFT) index and the percentage of population affected--is described in this article using the latest representative studies for 80 countries included in the WHO Global Oral Data Bank (GODB) between 1986 and 1996. The quantity of information varied considerably: 68% of developed market economies had at least one national data set, compared with 38% of developing countries and 36% of economies in transition. By WHO region, the proportions were as follows: Eastern Mediterranean, 55%; European, 50%; Western Pacific, 48%; African, 39%; South-East Asia, 30%; and the Americas, 26%. Globally, the weighted DMFT index for all data in the GODB is < 3.0%, the WHO/Fédération Dentaire Internationale goal for the year 2000. For the data reviewed in this article, achievement and nonachievement of this goal are discussed, as is the variation in DMFT means and proportions of children affected for various country groupings. There are difficulties in obtaining recent data for many countries, but the article emphasizes the need to maintain and develop the GODB to facilitate the compilation of valid, reliable and comparable data on oral health.