The relatively new resin material offers great expectation towards its use in clinical fluorosis affecting the Ecuador population, due to the in vitro preliminary studies of Viteri & Armas (2015), which prove that resin infiltration over enamel affected with incipient flouorosis is effective. Through its use in this clinical trial, the structural changes of the enamel with fluorosis will be analyzed against contact with the resin infiltration Icon ®-DMG technology.