Fluoride which we use in the clinic doesn’t cause fluorosis because.. Teeth already calcified

Fluoride which we use in the clinic doesn’t cause fluorosis because:

• A. It's not the same fluoride that cause fluorosis.
• B. Teeth already calcified.***
• C. Calcium in the mouth counter.
• D. Saliva wasn’t out.

Fluorosis can happen only during the time that the enamel is forming on the teeth.   Since all the tooth enamel (except for the wisdom teeth) forms before the age of six, only children six and under are susceptible to getting fluorosis.  Fluorosis does not happen to any portion of the teeth that have already erupted.

The correct answer is: B. Teeth already calcified.

Fluorosis is a condition that occurs when there is too much fluoride during the period when the teeth are forming. This usually occurs before the age of six, when the enamel of most teeth has already calcified.

Here's why the other options are incorrect:

• A. It's not the same fluoride that cause fluorosis.: The fluoride used in dental clinics is the same type of fluoride that can cause fluorosis, but the amount and application method are different.
• C. Calcium in the mouth counter.: While calcium is essential for healthy teeth, it does not prevent fluorosis.
• D. Saliva wasn’t out.: Saliva plays a role in maintaining oral health, but it does not prevent fluorosis.

Therefore, the only reason fluoride used in the clinic doesn't cause fluorosis is that the teeth have already calcified.