Figure 5.

A: A teenage boy had deep white enamel stains on the maxillary central incisors; B: Removal of the remainder of the abnormal white enamel with a fine-tapered diamond bur; C: Tooth preparation for composite resin; D: Etching for 30 seconds with 35% phosphoric acid; E: After water rinsing and air drying, a two-step bonding agent was applied. Resin-based composite restoration was performed; F: Complete photo-polymerization was accomplished using a light beam of 1000 mW/cm²; G: Finishing and polishing were completed using high speed diamond burs and low speed points