What are the toxic effects of fluoride on dental tissue?

No decay: Floride makes teeth more resistant to decay. In excess it can discolor teeth. In a dose almost impossible to get it is toxic as is pure water.

None: In normal prescribe doses there is no negative effect on dental tissue. A child forming teeth ingesting excessive Fluoride doses, like that in an area with natural Fluoride concentrations in the well water supply exceeding therapeutic doses, the tooth enamel can develop white streaking and white spots. However topical applied Fluoride gel has very little risk even if used excessively.

None: None. Anything negative is junk science. The surgeon general supports fluoride.

Normal dosage - none: At normal dosages (1ppm or lower) Fluoride has no toxic effect on dental tissue. At dosages about 3ppm ( three times the normal dosage) teeth that are forming under the gums may develop dental fluorosis. The higher the dosage the greater the effect. Less then 5% of the entire usa population has moderate- severe dental fluorosis. Fluoride has no toxic effect on erupted teeth.

Yes in large amounts: In very large amounts Fluoride can be fatal. This is true of most products that arose very beneficial in appropriate levels. You can potentially die from drinking a tremendous amount of water! Fluoride has been shown in many studies to be a very effective product in reducing dental decay.