Magnetic resonance tomography and dental radiology (Dental-MRT)

Purpose: To demonstrate the usefulness of Dental-MRT for imaging of anatomi c and pathologic conditions of the mandible and maxilla. Methods: Seven healthy volunteers, 5 patients with pulpitis, 9 patients wit h dentigerous cysts, 5 patients after tooth transplantation and 12 patients with atrophic mandibles were evaluated. Studies of the jaws using axial T1 - and T2-weighted gradient echo and spin echo sequences in 2D and 3D techni que have been to performed. The acquired images were reconstructed with a s tandard dental software package on a workstation as panoramic and cross sec tional views of the mandible or maxilla. Results: The entire maxilla and mandibula, teeth, dental pulp and the conte nt of the mandibular canal were well depicted. Patients with inflammatory d isease of the pulp chamber demonstrate bone marrow edema in the periapical region. Dentigerous cysts and their relation to the surrounding structures are clearly shown.After contrast media application marked enhancement of th e dental pulp can be found. Conclusion: Dental-MRT provides a valuable tool for visualization and detec tion of dental diseases.