Remineralization Potential of PRG Barrier Coat Versus Fluoride Varnish in White Spot Lesions in Permanent Anterior Teeth of Children

Inclusion Criteria: * Children aged 8-14 years with good health according to the American Society of Anesthesiologists (ASA-I). * Have at least one white spot lesion with International Caries Detection and Assessment System (ICDAS II) score one or two * Has not used any remineralizing agent in the former three months. * Parents who accept to sign informed consent. * Cooperative patients Exclusion Criteria: * Patients have caries or restorations in the labial surface. * Extrinsic or intrinsic stains. * patients under active orthodontic treatment. * Uncooperative patient. * Parents refuse to sign informed consent. * Medically unfit (other than ASAI).