Tooth Decay Trends:
Fluoridated vs. Unfluoridated Countries
(12 year olds; all data from World Health Organization; salt F countries excluded)
UNFLUORIDATED (0-10%)
Tooth Decay (DMFT Index)
9
Finland
Greece
8
Iceland
Italy
7
Japan
Netherlands
6
Portugal
Sweden
United Kingdom
5
FLUORIDATED (40-70%)
4
Australia
Ireland
3
New Zealand
United States
2
1
0
1965
1970
1975
1980
1985
Year
1990
1995
2000