Discoloration of anterior teeth can result from a disruption in mineralization of the forming tooth or from the process of caries on the formed tooth. Both demineralization and white spot lesions may be an esthetic concern for many patients. Resin infiltration and microabrasion are 2 different conservative treatments for these discolorations. This lecture will review clinical tips for case selection for both types of treatment as well as the steps to perform both techniques.