Fluoride Varnish Schedule Calculator

This calculator sets a fluoride varnish application schedule and dose using AAPD/ADA caries-risk-based recall intervals: roughly every six months for a low-risk child, down to every three months for a high-risk child. Caries risk level, number of active carious lesions, and access to community-fluoridated water are combined into a composite risk score that determines the interval -- active lesions add weight in two steps rather than a smooth per-lesion gradient (three or more active lesions add a full two points to the score, one or two lesions add one point, and beyond three additional lesions add nothing further), a maximum contribution equal in size to the entire span of the base caries risk rating itself, not larger than it. The absence of fluoridated water adds a smaller penalty on top.

Child age is used completely independently: it determines the varnish DOSE per application (0.25 mL for primary dentition under about age six, stepping up to 0.40 mL for a fully permanent dentition past age twelve) but plays no role at all in how often applications are recommended -- a five-year-old and a fifteen-year-old with identical risk profiles get the same interval, just different dose volumes. The fluoride delivered per application is calculated from the 5% NaF varnish's known 22.6 mg fluoride ion per mL concentration. The estimated annual cost uses a flat $32/application placeholder and does not reflect insurance coverage or regional pricing, and this tool does not replace a clinician's individual caries-risk assessment, which considers factors (diet, oral hygiene, medical history) beyond what is captured here.