Table 1.

Operative procedures.

• Isolation of the treated tooth with a rubber dam

• Removal of the superficial plaque with a nylon prophy toothbrush mounted on a contra-angle

• Etching of the white spot and surrounding healthy enamel with 15% HCL gel for 2′

• Washing with air and water for 30″

• Application of 99% ethanol dehydrating solution for 30″

• The etching process can be repeated for 2′, for a maximum of three if the WSL is still visible

• Drying of the lesion with air

• Application of infiltrating resin for 3′

• Elimination of excess with air

• Light curing for 40″

• Polishing.