Management of post-orthodontic white spot lesions using resin infiltration Icon®: a clinical case report

Auteurs: BOUATAY MARWENNE, TOUNSI RYM, JLASSI OUSSAMA, SAIDA SAHTOUT.

Abstract

Introduction: White spot lesions (WSLs) are a common iatrogenic complication of multibracket orthodontic treatment, resulting from plaque retention and enamel demineralization. These lesions compromise aesthetics, enamel integrity, and can affect patients’ social confidence. Minimally invasive approaches are increasingly recommended to manage post-orthodontic WSLs effectively.

Observation: A 23-year-old female patient presented with maxillary anterior WSLs after three years of fixed orthodontic therapy. After proper isolation, Icon® resin infiltration was performed using repeated acid etching and infiltration cycles adapted to the depth and severity of each lesion. Immediate aesthetic improvement of approximately 80% was observed, with full enamel rehydration and complete visual integration with surrounding sound enamel at the one-month follow-up. The patient was advised on oral hygiene and dietary precautions to maintain results.

Discussion: Resin infiltration acts by matching the refractive index of enamel, reducing light scattering, and reinforcing demineralized enamel mechanically. It also decreases surface roughness, limits plaque retention, and inhibits lesion progression. Compared to remineralization, bleaching, or microabrasion, Icon® infiltration preserves enamel structure while achieving both immediate and long-term aesthetic improvement. Its potential cariostatic and mechanical benefits make it a reliable, conservative, and microinvasive solution for post-orthodontic WSLs management.

 Keywords: White spot lesion, Resin infiltration, Post-orthodontic, Enamel demineralization, Icon®

Telecharger le pdf