Clinical Evaluation of White Spot Lesions Treated by S-PRG and ICON

Inclusion Criteria: * Patients within 20-40 years of age. * Each patient has 4 or more WSLs. * Mild and moderate WSLs according to Gorelick's scale. * Good oral hygiene and willing patients who can attend the study visits. * a Symmetrical number of permanent teeth in each arch (mesial to second molars). Exclusion Criteria: * Active carious lesions. * Facial surface restorations. * Intrinsic and extrinsic stains. * Patients who have a significant medical history or if they smoke. * Criteria for discontinuation; Mortality and acquiring severe debilitating disease