White spot lesions (WSLs) are a common adverse effect of fixed orthodontic treatment, caused by enamel demineralization associated with biofilm accumulation around brackets. These lesions are typically non-cavitated. Conventional treatments such as fluoride varnish enhance remineralization but often provide limited esthetic improvement. Resin infiltration has emerged as a minimally invasive alternative that improves the appearance of lesions by infiltrating porous enamel and altering its optical