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J Oral Maxillofac Surg. 2013 Jul;71(7):1159-69. doi: 10.1016/j.joms.2013.02.014. Epub 2013 Apr 21.

Diagnosis of dental abnormalities in children using 3-dimensional magnetic resonance imaging.

Author information

1
Department of Experimental Physics 5, University of Würzburg, Würzburg, Germany. Olga.Tymofiyeva@ucsf.edu

Abstract

PURPOSE:

To assess the feasibility of magnetic resonance imaging (MRI) of dental abnormalities in children.

MATERIALS AND METHODS:

The study included 16 patients (mean age, 10.8 yr) prospectively selected from 1,500 orthodontic patients. The selected patients included 3 with a mesiodens, 9 with supernumerary teeth other than a mesiodens, 1 with gemination, 1 with dilacerations, 1 with transmigration, and 1 with transposition. Three-dimensional (3D) images were acquired on a 1.5-T MRI scanner using a 3D turbo spin echo pulse sequence with a voxel size of 0.8 × 0.8 × 1 mm. The measurement time was 4 to 5 minutes.

RESULTS:

Using natural MRI contrast, the teeth, dental pulp, mandibular canal, and cortical bone could be clearly delineated. The position and shape of malformed teeth could be assessed in all 3 spatial dimensions.

CONCLUSION:

MRI was found to be a well-tolerated imaging modality for the diagnosis of dental abnormalities in children and for orthodontic treatment and surgical planning. Compared with conventional radiography, dental MRI provides the advantage of 3-dimensionality and complete elimination of ionizing radiation, which is particularly relevant for repeated examinations in children.

PMID:
23611603
DOI:
10.1016/j.joms.2013.02.014
[Indexed for MEDLINE]

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