Modified microabrasion protocol associated with resin infiltration

Resin infiltration is an alternative for arresting and masking white spot lesions (WSLs). However, depending on their extent, depth, and activity, the voids within their body may not be completely filled by the infiltrant, leaving a certain degree of porosity inside the infiltrated lesion. The two case reports presented in this article aim to propose a modified microabrasion protocol for treating the enamel surface before resin infiltration to improve the esthetic outcome of teeth presenting inactive WSLs. The clinical procedures are described step by step based on data from the scientific literature. The proposed modified microabrasion protocol for treating the enamel surface before resin infiltration of deep inactive WSLs shows promising potential. It effectively improves the esthetics of teeth with inactive WSLs in the treated patients, achieving satisfactory results through a less invasive approach than conventional restorative techniques. However, in vitro and further clinical studies are necessary to analyze the resulting surface loss and verify its effectiveness in treating different enamel developmental defects. Palabras clave: esthetic, microabrasion, resin infiltration, restorative dentistry, white spot lesion