Treatment of Interproximal Cavities on Primary Molar Teeth With Silver Diamine Fluoride

Inclusion Criteria: * ASA I and ASA II children, aged 3-12 * Behavior of 3 or 4 on Frankl scale * Radiographic decay within enamel or extending to the dentin-enamel junction based on International Caries Classification and Management System (ICCMS) Categories 1, 2 and 3 "Initial stages". * Target interproximal lesion does not have existing restoration, recurrent decay, or adjacent teeth with existing restorations. Exclusion Criteria: * Children who are not ASA I or ASA II * Children who are allergic to or intolerant of SDF * Children who have known sensitivity to silver or heavy metal-ions, or have abnormal skin sensitization. * Children who have ulcerative gingivitis or stomatitis. * Carious interproximal lesions on primary molars in ICCMS Category 4, 5, or 6 18 , which signify the extent of the carious lesion radiographically reaching the middle 1/3 of dentin, inner 1/3 of dentin, and into the pulp respectively. * Behavior of a child within the Frankl 1 or 2 category, indicating a "Definitely Negative" and "Negative" behavior, which may compromise safe application of SDF.