Too much or too little fluoride fluoride can be harmful. Too little amount will not strengthen the teeth whereas higher amount can result in white patches on tooth which is known as fluorosis.
So that its always better to get expert advice before proceeding with the treatment.
Daily supplement of fluoride comes from tea, water, fish, salt etc. Therefore parents are advised to keep an eye on the diet of children, providing them with the best diet food and also for those who live in areas with community water supply rich in fluoride, its important to regularly check for dental fluorosis.
Fluoride varnishes are available in the field of dentistry which comes in the form of gels and liquids. These can be directly applied on to the tooth surface under professional supervision.
They ensure more fluoride release locally with much stronger concentration at required amount.