Fluoride products are proven to be cost effective in preventing dental caries. Newer Fluoride products have been released in the market with different components that may have an impact on the clinical and radiographic outcome regarding incipient caries management. The objective of the study is to compare the effectiveness of PreviDent and MI varnish to (1.23%) Acidulated phosphopeptide Fluoride (APF) on remineralisation of non-cavitated proximal incipient lesions.

The patients will be randomly assigned in three groups by coin toss after obtaining the consent form and filling the questionnaire about file number, gender, socioeconomic status, education and occupation of the parents and their marital status. Group one will receive MI varnish, group two will receive PreviDent varnish, group three will receive 1.23% APF standard Fluoride application. The teeth will be cleaned, plaque will be removed, placement of wedge/separator and teeth will be dried with the aids of light, mouth mirror and dental probe followingInternational Caries Detection and Assessment System (ICDAS) score. The clinical assessment will be conduct during the application visit initial (T1), three months follow up visit (T2) six months follow up visit (T3) and twelve months follow up visit (T3) to evaluate the effectiveness of the different types of Fluoride. The radiographic assessment will be conducted during (T3) and (T4).

Inclusion Criteria:

1. Patient is 7-10 mixed dentition
2. Patients with any incipient non cavitated posterior proximal caries
3. Patients with any incipient non cavitated anterior proximal cariesanterior
4. ICDAS Score 1 or 2

Exclusion Criteria:

1. Any patients with any serious chronic medical problem.
2. caries that cross the dentin-enamel junction (DEJ) or enamel discontinuity
3. history of proximal restorations
4. history of resin infiltrate
5. ICDAS score of proximal caries more than two clinically or radiographically.