Conclusion:
1. During the treatment with a total dose of 21 grams of fluoride in a two years period further compression fractures of vertebrae were noticed in 5 or 23 cases. No conclusion can be drawn of course from further compression fractures about the effectiveness of treatment. Concerning the peripheral skeleton an average decrease of the bone mineral content of the radius was observed.
2. The histological picture of the bone biopsies show on an average a positive influence of treatment a
The diabetes mortality rate was lower (37.0) for the fluoridated areas than for the unfluoridated (45.2); this difference was statistically significant (P<0.01). Thus, the adjusted mortality rates for all causes and for cerebrovascular diseases and diabetes mellitus all tended to be higher in the unfluoridated areas than in the fluoridated.
... A general pattern was observed in the mortality for all causes and for diabetes; that is, that the lower the level of fluoride, the higher the level