Esthetic treatment of molar-incisor hypomineralization with a combination of minimally invasive and restorative procedures: a case report.

Molar-incisor hypomineralization (MIH) is a qualitative enamel alteration that asymmetrically affects the first molars and may also affect permanent incisors, clinically presenting as demarcated opacities with white, yellow, or brown discoloration. This condition can lead to increased risk of caries, esthetic impairment, fractures, and tooth loss. The aim of this case report is to describe the implementation of an esthetic treatment involving dental bleaching, resin infiltration (RI), and composite resin restoration for a patient with MIH. A 26-year-old woman presented with yellow and brown stains and structural loss in the maxillary right lateral incisor (tooth 7) and left central incisor (tooth 9); yellowish stains on the buccal surface of the mandibular left first molar (tooth 19) and maxillary right first molar (tooth 3); tooth loss of the maxillary left first molar (tooth 14); a full-metal crown on the mandibular right first molar (tooth 30); and milky white stains on the mandibular central incisors (teeth 24 and 25) and maxillary left lateral incisor (tooth 10). Additionally, maxillary hypoplasia and crowding were present. The treatment comprised at-home dental bleaching with 10% carbamide peroxide for 4 weeks, followed by RI of teeth 24, 25, and 26 (mandibular right lateral incisor) using the Icon resin infiltration system and composite resin restoration of teeth 7 and 9. The combination of dental bleaching, RI, and composite resin restorations proved to be effective in improving esthetics and consequently the quality of life for this patient with staining and minor structural loss caused by MIH.