This pilot trial is randomized, double-blind, and placebo-controlled trial with two parallel
arms: an intervention group using silver diamine fluoride (SDF) and a placebo group
(control). 144 eligible healthy adults will be enrolled in the study and randomly assigned
to one of the two treatment groups. Both groups will receive the traditional preventive
measures including cleanings, Fluoride varnish, diet analysis and counseling. Study
participants will be followed for two years and caries progression will be radiographically
monitored.