Elaboración de coronas de cerámicas en dientes no vitales mediante la colocación de postes colados
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2015-06
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Universidad de Guayaquil. Facultad Piloto de Odontología.
Resumen
Una pieza dental no tratada a tiempo trae consigo una serie de proble-mas, entre ellas la perdida de la vitalidad pulpar, es por eso que los pa-cientes recurren al tratamiento endodontico. Sabemos que éste trata-miento no es permanente, más bien prolonga el tiempo del pieza dentro del alvéolo. Con el paso de los años se han presentado casos de fractu-ras coronarias, inclusive radiculares, puesto que estos dientes ya no poseen la misma fuerza que antes. Siempre que la fractura solo sea co-ronaria, se puede rehabilitar el diente sin necesitad de exodoncia, con la ayuda de un poste ya sea prefabricado o colado que constan de una porción radicular y coronaria. La literatura indicó que la función princi-pal de estos pernos no es fortalecer la raíz, sino de proporcionar resis-tencia y estabilidad a la corona definitiva .La odontología protésica ha brindado una serie de opciones para rehabilitar piezas dentales. La elección más solicitada había sido cerámico-metálica, puesto que la porcela imita bien el color del diente, añadido a esto, su costo es menor a diferencia de otros materiales. El problema es que existe un índice elevado de personas inconformes, que a largo plazo habían presentado un halo oscuro a nivel cervical propio de la estructura metálica interna. Por esta razón a la demanda de una corona que sea resistente a las descargas oclusales y estético, surge las coronas con estructura inter-na de metal blanco (alúmina) y recubrimiento externo de metal blanco (circonio). Estos dos metales son mucho más resistentes a las fuerzas oclusales, su color es estable, a diferencia de la porcelana. Incluso permite proyección de luz a través de su estructura, tal y como lo hace el tejido del esmalte. Con esta opción se elimina el problema del halo oscuro del metal, gracias a la presencia de la alúmina
A tooth not treated in time brings a number of problems, including the loss of pulp vitality, because patients turn to endodontic treatment. We know that this treatment is not permanent, rather prolongs the piece inside the alveolus. Over the years there have been cases of coronary fractures, including root, since these teeth do not have the same strength as before. Whenever one is coronary fracture, you can rehabilitate the tooth without requiring extraction, with the help of a cast or prefabricated pole that consisting of a root and cor-onary portion. The literature indicated that the main function of these pins is not to strengthen the root, but to provide strength and stability to the final crown. Prosthetic dentistry provides a number of options to rehabilitate teeth. The election most requested had been ceramic-metal, because the porcelain imitates fine the tooth color, added to this, it costs less than other materials. The problem is that there is a high rate of dissatisfied people who had submit-ted long term a dark halo located on cervical level own internal metal struc-ture. For this reason when there is demand of a crown that is resistant to oclusal and aesthetic downloads, arise the crowns with internal structure of white metal (alumina) and external coating of white metal (zirconium). The-se two metals are much more resistant to occlusal forces, its color is stable, unlike porcelain. Even it allows light projection through its structure, as does the enamel tissue. With this option does not exist the problem of dark metal halo, thanks to the presence of alumina.
A tooth not treated in time brings a number of problems, including the loss of pulp vitality, because patients turn to endodontic treatment. We know that this treatment is not permanent, rather prolongs the piece inside the alveolus. Over the years there have been cases of coronary fractures, including root, since these teeth do not have the same strength as before. Whenever one is coronary fracture, you can rehabilitate the tooth without requiring extraction, with the help of a cast or prefabricated pole that consisting of a root and cor-onary portion. The literature indicated that the main function of these pins is not to strengthen the root, but to provide strength and stability to the final crown. Prosthetic dentistry provides a number of options to rehabilitate teeth. The election most requested had been ceramic-metal, because the porcelain imitates fine the tooth color, added to this, it costs less than other materials. The problem is that there is a high rate of dissatisfied people who had submit-ted long term a dark halo located on cervical level own internal metal struc-ture. For this reason when there is demand of a crown that is resistant to oclusal and aesthetic downloads, arise the crowns with internal structure of white metal (alumina) and external coating of white metal (zirconium). The-se two metals are much more resistant to occlusal forces, its color is stable, unlike porcelain. Even it allows light projection through its structure, as does the enamel tissue. With this option does not exist the problem of dark metal halo, thanks to the presence of alumina.
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PROTESIS DENTAL PARCIAL FIJA, CORONAS DENTALES, CEMENTOS DENTALES