Clinical Evaluation of Resin Infiltration Treatment of MIH-affected Teeth in Pediatric Patients

Children aged 6-14 years with molar incisor hypomineralization (MIH) will be evaluated for the presence of opaque lesions in their permanent incisors. Children with opaque lesions will be divided into two groups based on the classification published by Ghanim et al. in 2015: those with opaque areas limited to creamy-white to yellow-brown color. Teeth showing other developmental enamel defects (fluorosis, enamel hypoplasia, amelogenesis imperfecta, dental caries, etc.) will be excluded. The teeth in each of the two groups will be further subdivided into three subgroups, and treatments will be performed using Icon® (DMG, Hamburg, Germany) for resin infiltration, Opalustre (Ultradent Products, Cologne, Germany) for microabrasion, and Coxo CA-1 (Foshan Coxo Medical Instrument Co., Ltd., China) for air abrasion, either individually or in combination. The groups and procedures to be applied are planned as follows: Group 1: Creamy-White opaque area, Icon Group 2: Creamy-White opaque area, Opalustre + Icon Group 3: Creamy-White opaque area, Coxo CA-1 + Icon Group 4: Yellow-Brown opaque area, Icon Group 5: Yellow-Brown opaque area, Opalustre + Icon Group 6: Yellow-Brown opaque area, Coxo CA-1 + Icon Informed consent forms will be signed by patients and their parents who wish to participate in the study. The color stability and sensitivity of the opaque lesions after treatment will be checked at 1, 3, 6, 9, and 12 months. Standard photographs will be taken with a DSLR camera before treatment and at all control appointments. A spectrophotometer will be used to evaluate color stability. The Schiff Cold Air Sensitivity Test (SCASS) and Visual Analog Scale (VAS) will be used to assess sensitivity. The validated COHIP-SF-19 questionnaire will be administered to children before treatment and 3-6 months after treatment to assess their quality of life. Parents will also be administered the P-CPQ questionnaire to assess their child's oral health and quality of life.