Tooth stains in toddler: Caused by fluoride?

My son is 23 months old. His teeth have turned yellow. These stains have been evident for about six months. Our drinking water comes from the machines at the store. I assume this is usually fluoridated water. My son also takes daily multiple vitamins with fluoride. Could the stains be caused by too much fluoride?

Question:

The yellow stains could be caused by several things. If the recommended dosages of fluoride is exceeded, dental fluorosis can occur. In mild forms, the teeth can have yellow or brown stains. This condition is generally apparent when teeth erupt because the staining occurs while the teeth are developing. Discolorations which occur during tooth development are called intrinsic stains. The same is true for medications or illnesses which cause discolorations of the teeth.

It is most likely your son has extrinsic staining, since the stains occurred after his teeth erupted. Extrinsic stains are often caused by various foods and beverages we consume. Grape juice, red wine, tea, coffee, and tobacco stain teeth. Lack of good oral hygiene can also contribute to the condition. Extrinsic stains can usually be removed during a good professional dental cleaning.

Permanent teeth are generally darker than primary teeth when they erupt. It is difficult to predict with certainty what the shade change will be.

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