Abstract
Objectives : To evaluate and compare the artifacts caused by various brackets materials on Magnetic Resonance Imaging (MRI). Materials and Methods: Six cases were included - one control case, one case each with teeth bonded in the maxillary arch with composite brackets, ceramic brackets, stainless steel brackets, ceramic brackets in the maxillary anterior region and stainless steel brackets in the premolar region, and one case with teeth bonded in the maxillary and mandibular arch with stainless steel brackets. MRI scans were recorded in 5 mm thick sections in Sagittal and Coronal views to observe the presence or absence of artifacts. Results : The MRI scans of the control case, cases with ceramic and composite brackets showed no appreciable/measurable artifacts. Upper stainless steel brackets showed blurred areas on the MRI scan. Anterior ceramic and posterior stainless steel brackets showed minimal artifacts. Upper and lower stainless steel brackets showed 'black hole' regions. Conclusions : Patients who might require repeated MRI scans, can be treated orthodontically with ceramic/composite/anterior ceramic and posterior stainless steel brackets. When the region of interest is above the orbit or beyond the posterior wall of the pharynx, no demonstrable artifacts were recorded with various types of brackets included in the present study.
Published Version
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