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    Evaluation of intraoral orthodontic brackets’ effects on magnetic resonance imaging –A cadaveric study at 3 tesla
    (Atatürk University, 2020) Kurt, Mehmet Hakan; Kolsuz, Mehmet Eray; Öz, Ulaş; Avsever, İsmail Hakan; Örmeci, Tuğrul; Şakul, Bayram Ufuk; Orhan, Kaan
    Aim: Artifacts caused by orthodontic attachments limit the diagnostic value and lead to the removal of these appliances before magnetic resonance imaging. The magnet strength can influence the artifact size due to orthodontic appliances. Moreover, new (ceramic/clear) brackets have not evaluated. Hence, the purpose of this study was to quantitively evaluated the artifacts and heat due to different intra-oral appliances on Magnetic Resonance Imaging. Material and Method: The study based on a fresh cadaver head. Three intra-oral orthodontic appliances (i.e. metal/metalceramic and ceramic clear brackets) together with metallic wires were scanned in a 3 Tesla magnetic resonance device (3-Tesla Philips Achieva) using different sequences. Artifact areas were determined and the temperature evaluated before and after MRI scanning. Results: The smallest artifact was produced by Ceramic (clear) Brackets scanned in a 3D FLAIR sequence with a dimension of 9,1 mm on sagittal images. The steel-containing orthodontic devices were associated with radius artifacts ranging from 34,45 mm to 47,35 mm. No significant difference found for heat before and after scanning (p ?0.05). Conclusion: Consequently, the choice of intra-oral orthodontic appliances and awareness of the composition of appliances together with magnetic interference is crucial for head and neck magnetic resonance scanning that has to take into consideration by both orthodontic consultants and the radiologists.