Impact of Resin Infiltrant Therapy on Bullying and Oral Health-Related Quality of Life in Children with Molar-Incisor Hypomineralization

Objectives This study aimed to evaluate the impact of bullying on children with Molar–Incisor Hypomineralization (MIH) and to investigate whether a minimally invasive resin infiltration treatment of MIH-affected anterior teeth could reduce bullying and improve OHRQoL. Materials and Methods Twenty-one children aged 8–14 years with MIH involving anterior teeth participated in a single-arm clinical trial. Eligibility required affirmative responses to two items of the Child Perceptions Questionnaire (CPQ) specifically addressing bullying related to oral conditions, ensuring that all participants presented both anterior MIH and concomitant bullying experiences. Icon Resin Infiltrant (DMG, Germany) was applied to visible opacities. The CPQ was then administered at baseline and one month after treatment to assess changes in OHRQoL, while bullying experiences were reassessed at baseline and three months post-treatment. Data were analyzed using Jamovi 2.3.28 with the McNemar test, Wilcoxon signed-rank test, Friedman test, and Durbin–Conover post hoc comparisons. Results All participants reported bullying before treatment, whereas none did so at the three-month follow-up (p < 0.001). Significant improvements were observed in the emotional and social domains of OHRQoL one month after treatment (p < 0.001), and these benefits were sustained over time. Conclusions Minimally invasive treatment of anterior MIH lesions effectively eliminated bullying experiences and significantly enhanced OHRQoL. Clinical Relevance : Early esthetic intervention for anterior MIH is of high clinical and psychosocial importance, as it can substantially reduce bullying and promote children’s overall well-being.