| Summary: | Abstract: In current dentistry there is a philosophy: to restore health to the patient and the dental organs trying to affect the least amount of healthy tissue. This is how minimally invasive dentistry arises. Although it has been tried to respect this premise, there are situations in which it is not entirely easy. Until now, for the treatment of incipient enamel lesions, there were only two alternatives: avoiding the progress of demineralization and reversing it by means of substances such as fluoride or CPP-ACP (Recaldent), or making a cavity to eliminate caries and restore it. But both have disadvantages, since trying to remineralize is exposed to the patient not following the instructions correctly and when performing the restoration there is always the possibility of removing healthy tissue. However, thanks to new materials and current technology, we have a new material based on the infiltration technique of resin infiltration. The main objective of the present review is to know the efficacy, the benefits that resin infiltration provide us and the limitations that have been found to date. Likewise, we wanted to compare this material with some of the minimal intervention materials to treat enamel lesions. The review was carried out and 35 articles that met the inclusion and exclusion criteria were finally included. Resin infiltration with Icon®, is an excellent microinvasive treatment option to treat noncavitated caries lesions on interproximal and smooth surfaces, since they stop the enamel demineralization process. The purpose of resin infiltration is to seal, without the need of a cavity, the microporosities of demineralization to create a diffusion barrier within the lesion, preventing acids from penetrating the lesion and allowing it to advance. The resin matrix acts by strengthening the enamel structure, increasing the microhardness of the surface and therefore preventing breakage of the enamel surface by acids. Despite being an innovative and recent technique with great prospects for the future, more studies with a higher level of evidence are required to reach results that confirm its efficacy and determine the benefits it provides in the long term.
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