Evaluación de la resistencia a la tracción de casquetes metálicos cementados con cementos de resina v/s fosfato de zinc sobre muñones metálicos
Cargando...
Archivos
Fecha
2009
Autores
Profesor/a Guía
Facultad/escuela
Idioma
es
Título de la revista
ISSN de la revista
Título del volumen
Editor
Universidad Andrés Bello
Nombre de Curso
Licencia CC
Licencia CC
Resumen
Hoy en día, la práctica odontológica ha cambiado sustancialmente con la introducción de nuevas
técnicas y materiales. En el campo protésico la búsqueda por la realización de tratamientos de
mayor longevidad con un alto grado de éxito y aceptación del paciente, actualmente se ha
convertido en el gran objetivo del clínico.
Las restauraciones tipo corona periférica completa deben cumplir con ciertos requerimientos
estéticos, biológicos y funcionales. Dentro de los requerimientos funcionales es imprescindible que
la restauración permanezca firmemente unida a la preparación dentaria, por lo cual es de suma
importancia considerar variables como son el diseño de las preparaciones, el diseño de las
restauraciones y los agentes de cementación a utilizar.
Se realizó un estudio comparativo in Vitre donde se evalúo la resistencia a la tracción de
casquetes metálicos cementados sobre muñones metálicos con una área de anclaje mínima
utilizando 3 agentes de cementación.
Se tallaron 2 premolares humanos con área de anclaje mínima, se selecciono el que cumplía con
las medida exigidas para luego realizar 30 replicas de este muñón en Cr-Ni con sus respectivos
casquetes.
De un total de 30 muestras, 1 O fueron cementadas con RelyX Unicem, 10 con Fosfato de Zinc y
1 O con Multilink. Luego de mantener las muestras en suero por 48 horas fueron sometidas a
pruebas de resistencia a la tracción en una maquina de ensayo universal marca lnstron modelo
4411.
Los valores medio de resistencia a la Tracción expresados en Mpa fueron los siguientes: 10.27
para RelyX Unicem, 10.62 para el Fosfato de Zinc y 12.86 para el Multilink.
Se encontraron diferencias estadísticamente significativas entre los grupos cementados con RelyX
Unicem y Multilink y entre los grupos cementados con Fosfato de zinc y Multilink, en ambos casos
con p > 0,005; no existiendo diferencias estadísticamente significativas entre los grupos
cementados con RelyX Unicem y Fosfato de Zinc (p = 0.924).
These days, the practice of dentistry has changed dramatically with the introduction of new techniques and materials. In the technician field conducting the search for treatments to increase longevity with a high degree of success and patient acceptance, has now become the major goal of the clinician. The complete peripheral crown must meet certain aesthetic requirements, biological and functional. Within the functional requirements is essential for the restoration to remains firmly attached to the tooth preparation, making it extremely important to consider variables such as the design of the preparations, the design of restorations and cementation agents to use. We performed a comparative in vitro study which assessed the tensile strength of copings cemented metal on metal stumps with a minimum anchorage area using 3 cementing agents. Two premolars were prepared with minimal anchorage area, which was selected that met the required measure and then do 30 equal reproductions of the stump of Cr-Ni with their respective copings. Of a total of 30 samples, 10 were cemented with RelyX Unicem, 10 with zinc phosphate and 10 with Multilink. After keeping the samples in serum for 48 hours were tested for tensile strength in a universal testing machine lnstron brand model 4411. The average values of tensile strength expressed in MPa were as follows: 10.27 for RelyX Unicem, 10.62 to 12.86 Zinc Phosphate and for the Multilink. Statistically significant differences were found between the groups cemented with RelyX Unicem and Multilink and the groups cemented with zinc phosphate and Multilink, both with p> 0.005; no statistically significant differences between the groups cemented with RelyX Unicem and Zinc Phosphate (p = 0,924) were found.
These days, the practice of dentistry has changed dramatically with the introduction of new techniques and materials. In the technician field conducting the search for treatments to increase longevity with a high degree of success and patient acceptance, has now become the major goal of the clinician. The complete peripheral crown must meet certain aesthetic requirements, biological and functional. Within the functional requirements is essential for the restoration to remains firmly attached to the tooth preparation, making it extremely important to consider variables such as the design of the preparations, the design of restorations and cementation agents to use. We performed a comparative in vitro study which assessed the tensile strength of copings cemented metal on metal stumps with a minimum anchorage area using 3 cementing agents. Two premolars were prepared with minimal anchorage area, which was selected that met the required measure and then do 30 equal reproductions of the stump of Cr-Ni with their respective copings. Of a total of 30 samples, 10 were cemented with RelyX Unicem, 10 with zinc phosphate and 10 with Multilink. After keeping the samples in serum for 48 hours were tested for tensile strength in a universal testing machine lnstron brand model 4411. The average values of tensile strength expressed in MPa were as follows: 10.27 for RelyX Unicem, 10.62 to 12.86 Zinc Phosphate and for the Multilink. Statistically significant differences were found between the groups cemented with RelyX Unicem and Multilink and the groups cemented with zinc phosphate and Multilink, both with p> 0.005; no statistically significant differences between the groups cemented with RelyX Unicem and Zinc Phosphate (p = 0,924) were found.
Notas
Tesis (Cirujano Dentista, especialización en Clínica Integral del Adulto)
Palabras clave
Materiales Dentales, Restauración Dental tipo corona periférica, Requerimientos estéticos, biológicos y funcionales, Chile, Tratamiento dental de mayor longevidad