itisswallowedinverylargequantities.Itisforthereasonthatfluoridesupplementscanonlybeobtainedonprescriptionfromthedoctorordentist.Pleasebeassuredthatfluorideoverdosesarerare-infact,Ihaveneverheardofanyfatalincidentsrelatedtofluoridepoisoning.79.Scientificstudieshaveshownthatfluoridecanhelptopreventcavitiesaslongasitisusedcorrectly.Iffluorideisabused,thereisariskofillnessorevendeathsinextremecases.Ifadeadlyamountoffluorideistaken,immediatefirst-aidcouldsavealife.Apersonwhohasswallowedalargeamountoffluoridewillprobablystartvomiting.Ifnot,thepatientshouldbegivenmilkorantacidandtakentothenearesthospitalforemergencytreatment.80.Takingtoomuchfluoridewhileteetharegrowingcanleadtoaconditioncalleddentalfluorosis.Themostlikelycauseistheswallowingoffluoridetoothpastesbyyoungchildren.Itcanalsobecausedby