PHYSICAL CHARACTERISTICS
Silver fluoride is a colorless aqueous solution containing
silver ions and fluoride ions. It is highly alkaline
(pH = 11), which requires a two-stage application
procedure using SnF2 as a reducing agent.
Silver diamine fluoride, a chemical that is claimed
to be more stable and that can be kept in a constant
concentration, has been in use in many countries,
including China and Japan, to arrest dental caries for
many years.[17,25] SDF is not as alkaline (pH = 8-9) as
AgF. It does not require a reducing agent.