| CONTENIDO GENERAL DEL CURSO | CONTENIDO DE LA UNIDAD | BIBLIOGRAFÍA DE ESTA SECCIÓN | ARTÍCULOS CONSULTADOS | PALABRAS CLAVE | SECCIONES: 1ª 2ª 3ª 4ª |
CONTENIDO
DE LA UNIDAD 18:
17.1. Generalidades y objetivos 17.1.1. Elección y momento oportuno para restaurar el diente 17.1.2. Cambios estructurales del diente despulpado 17.2. Principios generales en restauración de dientes anteriores y posteriores 17.2.1. Elementos fundamentales para la restauración
17.3. Postes intrarradiculares 17.3.1. Desobturación del conducto 17.3.2. Características (longitud, diámetro, diseño, forma) 17.3.3. Cementado 17.3.4. Postes intrarradiculares vaciados 17.3.4.1. Características 17.3.4.2. Ventajas y desventajas
17.3.5. Postes intrarradiculares prefabricados 17.3.5.1. Tipos y características 17.3.5.2. Ventajas y desventajas 17.3.5.3. Criterios biomecánicos de selección 17.3.5.3.1. Para el poste 17.3.5.3.2. Para el cemento del poste 17.3.5.3.2. Para el material del muñón
17.4. Pines intradentinarios 17.5. Muñones 17.6. Restauración externa final para anteriores y posteriores 17.6.1. Indicaciones y contraindicaciones 17.6.2. Dientes con destrucción mínima, moderada, avanzada
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REGRESAR A LA SECCIÓN SOBRE TÉCNICAS DE RECONSTRUCCIÓN CON COMPONENTES PREFABRICADOS.
RESUMEN DEL ARTÍCULO CITADO:
EFFECT OF DIFFERENT ALL-CERAMIC CROW SYSTEM ON FRACTURE RESISTANCE AND FAILURE PATTERN OF ENDODONTICALLY TREATED MAXILLARY PREMOLARS RESTORED WITH AND WITHOUT GLASS FIBER POSTS
Endodontically treated teeth are traditionally restored with a crow to prevent fracture. The aim of this study was to compare the fracture resistance and failure modes of endodontically treated with or without a fiber post and restored with different types of crowns.
Eighty human maxillary premolars were selected. After root canal treatment, the teeth were selected. After root canal treatment, the teeth were embedded in resin blocks and divided into four groups. Samples received MOD cavity preparations and were divided into two subgroups: with and without fiber posts and restored using porcelain fused to metal, lithium disilicate, fiber-reinforced composite, or zirconia crowns.
The specimens were vertically loaded in the central fossa using a universal loading machine until failure, and the maximum breaking loads machine until failure, and the maximum breaking loads were recorded. Samples were perfused with Indian ink to highlight the fracture lines and the mode of failure that was classified as restorable or nonrestorable.
Even without post, all crown designs resisted vertically applied forces beyond those that may be encountered in the mouth. The results suggest that the posts could contribute to the reinforcement and strengthening of pulpless maxillary premolars. With respect to failure modes, placement of fiber post improved the fracture from nonrestorable to restorable patterns. This study suggests that the placement of fiber posts in necessary to improve fracture resistance even under full- coverage crowns.
Salameh, Ziad. EFFECT OF DIFFERENT ALL-CERAMIC CROW SYSTEM ON FRACTURE RESISTANCE AND FAILURE PATTERN OF ENDODONTICALLY TREATED MAXILLARY PREMOLARS RESTORED WITH AND WITHOUT GLASS FIBER POSTS. JOE. jul 2007; 33(7), July 2007:848-851. (Biblioteca ADM)
Investigado por Martha Aurora Agustín Hernández, Alumna del grupo 2632 (2008), FES Iztacala, UNAM
| CONTENIDO GENERAL DEL CURSO | CONTENIDO DE LA UNIDAD | BIBLIOGRAFÍA DE ESTA SECCIÓN | ARTÍCULOS CONSULTADOS | PALABRAS CLAVE | SECCIONES: 1ª 2ª 3ª 4ª |