title: Dental materials and magnetic resonance imaging.
abstract: Radiologists may encounter patients with fixed dental prostheses that may produce image distortion on MRI scans of the face and jaw. In this work, we assessed the MRI appearances of dental prosthetic materials in vitro, including precious alloys, nonprecious alloys, ceramic prostheses, dental amalgam, and composite materials. For in vivo studies, these materials were placed in the patient's mouth. Nonprecious alloys produce large image deformations, whereas precious alloys had no effect on MRI images. The in vivo study showed the anatomical zones that were most affected on MRI scans. The size of these zones produced by the presence of nonprecious alloys is influenced by the volume of the prosthesis and is related to the scanning sequence used.
authors.affiliation: Faculté d'Odontologie, Lyon, France.
authors.forename: M
authors.initials: M
authors.lastname: Lissac
authors.forename: D
authors.initials: D
authors.lastname: Metrop
authors.forename: J
authors.initials: J
authors.lastname: Brugirard
authors.forename: J L
authors.initials: JL
authors.lastname: Coudert
authors.forename: P
authors.initials: P
authors.lastname: Pimmel
authors.forename: A
authors.initials: A
authors.lastname: Briguet
authors.forename: D
authors.initials: D
authors.lastname: Revel
authors.forename: M
authors.initials: M
authors.lastname: Amiel
mesh_terms: D000328:Adult; D002516:Ceramics; D003722:Dental Alloys; D003723:Dental Amalgam; D003764:Dental Materials; D003778:Dentures; D006257:Head / Q000033:anatomy & histology; D006801:Humans; D066298:In Vitro Techniques; D008279:Magnetic Resonance Imaging
chemical_list: D003722:Dental Alloys; D003764:Dental Materials; D003723:Dental Amalgam