There are significant differences in susceptibility artifacts dependent on material composition of the crowns (see Fig. 3).
Fig. 3: The total signal loss of three stainless steel crowns (A: 3M Espe, B: Acero XT, C: Denovo Dental) for a GRE sequence with coronal slice direction at 1.5T is shown.
References: Andreas Heinrich, Department of Radiology, University Hospital Jena - Jena/DE
The total signal loss was 27-to-35 ± 4 mm for TSE sequences and 35-to-46 ± 5 mm for GRE sequences.
The distances from the maxillary left second deciduous molar to anatomic structures (see Fig. 4) were 36-to-44 ± 5 mm (orbital rim),
39-to-53 ± 6 mm (gyrus temporalis inferior),
70-to-81 ± 5 mm (lower margin of cerebellum) and 109-to-126 ± 7 mm (lateral ventricle).
Fig. 4: The distances from the maxillary left second deciduous molar to anatomic structures and the maximal artifact area (red circles) of a stainless steel crown for a three years and eight years old child is shown.
References: Andreas Heinrich, Department of Radiology, University Hospital Jena - Jena/DE