Comparison of magnetic resonance imaging artifacts of five common dental materials / 华西口腔医学杂志
West China Journal of Stomatology
;
(6): 230-233, 2015.
Artículo
en Chino
| WPRIM
| ID: wpr-261099
ABSTRACT
<p><b>OBJECTIVE</b>To compare five materials commonly used in dentistry, including three types of metals and two types of ceramics, by using different sequences of three magnetic resonance imaging (MRI) field strengths (0.35, 1.5, and 3.0 T).</p><p><b>METHODS</b>Three types of metals and two types of ceramics that were fabricated into the same size and thickness as an incisor crown were placed in a plastic tank filled with saline. The crowns were scanned using an magnetic resonance (MR) machine at 0.35, 1.5, and 3.0 T field strengths. The TlWI and T2WI images were obtained. The differences of various materials in different artifacts of field MR scans were determined.</p><p><b>RESULTS</b>The zirconia crown presented no significant artifacts when scanned under the three types of MRI field strengths. The artifacts of casting ceramic were minimal. All dental precious metal alloys, nickel-chromium alloy dental porcelain, and cobalt-chromium ceramic alloy showed varying degrees of artifacts under the three MRI field strengths.</p><p><b>CONCLUSION</b>Zirconia and casting ceramics present almost no or faint artifacts. By contrast, precious metal alloys, nickel-chromium alloy dental porcelain and cobalt-chromium ceramic alloy display MRI artifacts. The artifact area increase with increasing magnetic field.</p>
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Circonio
/
Imagen por Resonancia Magnética
/
Cerámica
/
Aleaciones de Cromo
/
Artefactos
/
Coronas
/
Aleaciones Dentales
/
Materiales Dentales
/
Porcelana Dental
/
Campos Magnéticos
Idioma:
Chino
Revista:
West China Journal of Stomatology
Año:
2015
Tipo del documento:
Artículo
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