Healthy volunteers
Accepted
Inclusion Criteria:
* Inclusion criteria: Ages 6-12 years age. Recent history (\< 24 months) of childhood caries, weight ≥ 15 kg, and current dental radiographic films within standard of care practices. At this time, we are looking for longitudinal changes within this cohort and are not using condition-matched controls.
Exclusion Criteria:
* Exclusion criteria: Weight \<15 kg; Iodine or seafood allergy; hypersensitivity to fluoride varnish; antibiotics within the past 3 months; thyroid disease; significant past or current medical problem history, especially conditions that may affect salivary flow, dietary intake patterns, or routine oral hygiene.
