Resistencia traccional de nucleo de zirconio cementados sobre muñones reconstruidos con resina con distintos tipos de cementos
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Date
2011
Authors
Profesor/a GuĂa
Facultad/escuela
Idioma
es
Journal Title
Journal ISSN
Volume Title
Publisher
Universidad Andrés Bello
Nombre de Curso
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Abstract
En rehabilitaciĂłn oral, es un procedimiento habitual la realizaciĂłn de coronas
periféricas libres de metal en base a cerámicas de óxidos de zirconio para recuperar
función y estética. Es fundamental en esto la consideración del proceso de cementación
que se utilizará.
Se realizĂł un estudio comparativo entre 3 cementos distintos, para determinar la
resistencia traccional que estos ofrecĂan al ser utilizados en coronas fabricadas con
sistema CAD-CAM dental lncise® (Ranishaw) fabricadas en zirconio, sobre muñones
reconstruidos con resina.
Seleccionados 30 premolares humanos sanos recientemente extraĂdos, estos
fueron cortados de manera horizontal dejando 2mm en cervical y se reconstruyeron con
postes de fibra y Cementos Paracore automix® (Coltene), utilizando matrices
preformadas.
Los muñones fueron escaneados para la realización de núcleos de zirconio. Las
preparaciones se dividieron en 3 grupos de 1 O piezas incluyendo su nĂşcleo
correspondiente, el grupo nĂşmero 1 fue cementado con cemento de ionĂłmero de vidrio
Ketac Cem® (3M ESPE), el grupo 2 fue cementado con cemento de resina dual
autograbante-autoadhesivo Biscem® (Bisco), previo uso del primer Z-Prime™ Plus en
el nĂşcleo y el grupo 3 fue cementado con cemento de resina dual autograbanteautoadhesivo
RelyX® U 100 (3M ESPE.)
Se realizaron pruebas de tracciĂłn en cada uno de los grupos, los resultados
medios en Megapascales (MPa) fueron 2,59 MPa para Ketac Cem®, 3,33 MPa para
Biscem® y 4, 1 MPa RelyX® U100.
Los resultados fueron analizados estadĂsticamente con el análisis de varianza
estadĂstica Anova y el test de comparaciĂłn significativa ScheffĂ©, obteniendo como
resultado sólo diferencias significativas entre Ketac Cem® y RelyX® U100 (p<0,005).
In oral rehabilitation, the free peripheral crowns in base of zirconium oxid ceramics a common procedure in order to restore function and esthetics. For this, the process of cementation used is fundamental. A comparative study, between 3 different cements was mode, in order to determine the tractional strenght they offer when being used in crowns elaborated whit CAD-CAM Dental lncise® (Ranishaw) system made in zirconium, over teeth preparations of resin cement. Thirty healthy human premolars were selected, they were cut horizontally leaving 2mm on cervical, and were reconstructed with fiber posts and Paracore cement Automix® (Coltene) using preformed matrices. The prepared teeth were scanner for the confection of zirconium oxide copings. Te preparations were randomly divided in 3 group of 1 O teeth each including they corresponding copings. The first group was cemented with glass ionomer Ketac Cem® (3M ESPE), the second group was cemented with dual-cured selft-adhesive cement Biscem® (Bisco) after using Z-Primer® primer. The third group was cemented with dualcured self-adhesive cement RelyX® U 100 (3M ESPE). Traction test were made in each of the groups, the average result in Megapascal (MPa) were 2,59 MPa for Ketac Cem®. 3,33 MPa for Biscem® and 4, 1 MPa for RelyX® U100. The results were statistically evaluated whit variance statistical analysis Anova and the significative comparison test Scheffe, showing significativa differences only between Ketac Cem® and ReliX® U100 (p<0,005)
In oral rehabilitation, the free peripheral crowns in base of zirconium oxid ceramics a common procedure in order to restore function and esthetics. For this, the process of cementation used is fundamental. A comparative study, between 3 different cements was mode, in order to determine the tractional strenght they offer when being used in crowns elaborated whit CAD-CAM Dental lncise® (Ranishaw) system made in zirconium, over teeth preparations of resin cement. Thirty healthy human premolars were selected, they were cut horizontally leaving 2mm on cervical, and were reconstructed with fiber posts and Paracore cement Automix® (Coltene) using preformed matrices. The prepared teeth were scanner for the confection of zirconium oxide copings. Te preparations were randomly divided in 3 group of 1 O teeth each including they corresponding copings. The first group was cemented with glass ionomer Ketac Cem® (3M ESPE), the second group was cemented with dual-cured selft-adhesive cement Biscem® (Bisco) after using Z-Primer® primer. The third group was cemented with dualcured self-adhesive cement RelyX® U 100 (3M ESPE). Traction test were made in each of the groups, the average result in Megapascal (MPa) were 2,59 MPa for Ketac Cem®. 3,33 MPa for Biscem® and 4, 1 MPa for RelyX® U100. The results were statistically evaluated whit variance statistical analysis Anova and the significative comparison test Scheffe, showing significativa differences only between Ketac Cem® and ReliX® U100 (p<0,005)
item.page.dc.description
Tesis (Cirujano Dentista, EspecializaciĂłn en ClĂnica Integral del Adulto)
Keywords
Adhesivos Dentales, Cemento Dental, Materiales Dentales, Prótesis Dental Fija, Estética Bucal