| Excess fluoride can cause a condition called skeletal fluorosis. |
| An excessive ingestion of fluoride during the formation of the teeth can create dark stains on them, which are called dental fluorosis. |
| Ingestion of excess fluoride during tooth development, particularly at the maturation stage, may also result in dental fluorosis. |
| For adults, high levels of fluorides consumed for a very long period of time may lead to skeletal fluorosis. |
| A long-known reason is dental fluorosis associated with excessive fluoride intake. |
| The outcome of fluorosis was the most studied of all the adverse effects considered. |
