Which fluoride option does not stain teeth and is approved by the ADA?

Sodium fluoride is recognized as a fluoride option that does not cause staining of the teeth and has received approval from the American Dental Association (ADA). This particular fluoride is commonly used in various dental products, including toothpaste and mouth rinses, primarily due to its ability to strengthen enamel and prevent cavities effectively without the risk of discoloration.

In contrast, stannous fluoride can lead to staining due to its tin content, which can react with components in the mouth and cause discoloration over time. Acidulated phosphate fluoride is also effective but is not typically associated with the same level of staining risk as stannous fluoride, but it may still affect certain dental materials. The combination option of acidulated phosphate fluoride/stannous fluoride dual rinse carries the potential for staining due to the presence of stannous fluoride, making it less desirable in situations where aesthetic considerations are paramount.

Choosing sodium fluoride ensures both the safety and cosmetic appearance of the teeth, which is why it stands out as the preferred option among these fluoride treatments.