Dentists and hygienists often propose fluoride treatments to patients in the dental chair to prevent cavities and strengthen ...

When Tristen Boyer recently had a couple of cavities filled, her dentist suggested she get fluoride treatment afterward. She has Crohn’s disease, which puts her at increased risk for tooth decay.

(AP Photo/Nick Wass) When Tristen Boyer recently had a couple of cavities filled, her dentist suggested she get fluoride treatment afterward. She has Crohn’s disease, which puts her at increased ...