Identification of Molar-Incisor Hypomineralization (MIH) in Orthodontical Imaging Exams

Molar-Incisor Hypomineralization (MIH) is a developmental defect of the enamel that affects molars and incisors, with white, yellowish or brownish spots as its main charac-teristics, which may present characteristics of fragility in these regions, with a chance of fractures. This observational study investigates the efficacy of imaging tests requested in orthodontic documentation, in this case, cone beam computed tomography (CBCT) as an additional and profound possibility for identifying and diagnosing HMI. Children aged between 6 and 12 years were selected, who had clinically diagnosed HMI, and who participated in another study, where the request for CBCT was made possible. Of the 26 examinations evaluated, out of a total of 13 patients, 59 teeth were identified, of which 81% were white spots, 9% yellow/brown spots, and 10% had fractures. The results concluded that there is a visual possibility by the professional of the defects of the imaging exams, especially in CBCT, with the possibility of extension measurements; however, knowledge of the clinical condition is still the preponderant factor for the differential diagnosis of this enamel defect. It can be concluded that it is possible to observe HMI lesions on CBCT images, but the orthodontist needs to be qualified in this identification, through the additional tests that already make up his diagnostic arsenal. With this, relationships of difficulties in your clinic can be identified earlier, such as loss of space in the arch, dif-ficulty in bonding accessories, among others.