Prevention of Enamel Demineralization by Use of K18-smooth Surface Sealant

Inclusion Criteria: * Orthodontic patients at the Department of Orthodontics Clinic, School of Dental Medicine, University of Colorado who agree to consent to this study. * Orthodontic treatment plans that include fixed appliances from the second premolar to second premolar in both arches. * Orthodontic treatment plans that include extractions of at least 3 bicuspids at about 1 month after bracket placement. * The patient has adequate oral hygiene Exclusion Criteria: * Evidence of decalcification or restorations on any of the premolars planned for extraction prior to orthodontic treatment, * Pregnant women (self reported) * Any condition that contraindicates orthodontic treatment, * Not willing to consent to the study.