*5.1.3 Resin infiltration*

Also known as an ICON (infiltration concept) was designed as a minimally invasive resin infiltration system for treating incipient caries in patients of all ages. The low viscosity unfilled resin, developed by the company DMG (Germany) camouflages white spots using optical manipulation, and no tooth tissue removal is strictly necessary (**Figure 4**).

The clear resin flows into the demineralized enamel, and has similar optical properties (similar refractive index) to the enamel, therefore reflecting light to match the tooth's natural shade [34, 35].
