Comparison of Two Minimally Invasive Approaches for Masking Molar-Incisor Hypomineralization Opacities

Inclusion Criteria: * Age between 8 and 10 years, * Diagnosis of MIH according to the European Academy of Paediatric Dentistry (EAPD) criteria \[19\], with at least one permanent incisor exhibiting well-demarcated white-cream and/or yellow-brown enamel opacities causing esthetic concern to the child and/or parents, * Absence of urgent dental treatment needs, with completed treatment of posterior teeth, * Ability of both children and parents to read and understand Turkish. Exclusion Criteria: * Presence of urgent dental treatment or requirement for restorative treatment of MIH affected permanent first molars during the study period, * Presence of dental or facial anomalies other than MIH (e.g. hypodontia, cleft lip and/or palate), * Presence of dental caries, crown fractures, or extrinsic/intrinsic tooth discolorations that could compromise esthetic perception, * Presence of other developmental enamel defects (e.g. enamel hypoplasia, amelogenesis imperfecta, fluorosis, or hypoplasia related to previous dental trauma), * Previous restorative treatment, resin infiltration, microabrasion, and/or tooth whitening on the affected incisors, * Children and/or parents who were unlikely to attend follow-up visits or were unable to read and understand Turkish.