Ajuste marginal de casquetes metálicos de prótesis fija en tres tipos de terminaciones cervicales
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Archivos
Fecha
2012
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
El diseño de la terminación cervical de una preparación biológica para
prótesis fija es un aspecto relevante en el éxito a largo plazo de una restauración, ya
que el éxito de una rehabilitación protésica dependerá de la perfecta adaptación de los
márgenes a la línea de terminación de la preparación. Por ésta razón el objetivo de
este estudio es comparar el ajuste marginal de casquetes metálicos en tres tipos de
terminaciones cervicales.
Metodología: Se evaluó, mediante un estudio experimental in vitro, el ajuste marginal
que tienen diferentes tipos de diseños de líneas de terminación cervical para PFU
(hombro recto, hombro recto biselado y chamfer), sobre casquetes metálicos
cementados. Para esto, a partir de 30 premolares, se tallaron preparaciones para PFU,
distribuidas en tres grupos (cada uno con 1 O dientes) según el diseño de línea de
terminación cervical realizada. Se confeccionaron los casquetes metálicos periféricos
completos, los cuales fueron cementados con cemento de vidrio ionómero en sus
respectivas preparaciones.
Luego fueron embebidos en acrílico transparente para posteriormente ser
seccionados de mesial a distal con el objetivo de obtener las muestras, las cuales
fueron observadas mediante un sistema de microscopia óptica con 2x, con el fin de
realizar la medición del ajuste marginal del casquete metálico en su preparación.
39
Resultados: Los datos fueron analizados estadísticamente, mediante las pruebas
Shapiro -Wilk, Levene y ANOVA, no encontrándose diferencias significativas entre los
valores de ajuste marginal de los tres tipos de terminacion. Esto concuerda con
estudios previos, como el realizado por Syu y col. 37
Conclusión: Se concluye que no existen diferencias estadísticamente significativas
entre los valores de ajuste marginal de los diferentes grupos de líneas de terminación
cervical analizados.
The design of a cervical ending on a biological preparation for fixed prosthesis is an important aspect in the long term success of a restoration, since the success of prosthetic rehabilitation depends on the perfect adaptation of the margins to the finish line preparation. Therefore the aim of this study is to compare the marginal fit of metal caps on three types of cervical endings. Methods: lt has been evaluated, by an in vitro experimental study, the marginal fit of different types of designs of cervical finishing lines for PFU (shoulder, bevelled shoulder and chamfer) on cemented metal caps. For this, 30 premolars carved to PFU, were distributed into three groups (each with 1 O teeth) as the design on cervical finish line. Metal complete peripheral caps were produced, which were cemented with glass ionomer cement in their preparations. After this, they were embedded in transparent acrylic to be sectioned in a mesial to distal arder to obtain the samples, then they were observed by an optical microscope system with 2x, in arder to perform the measurement of marginal fit of the metal cap to the biological preparation. Results: The data were statistically analyzed by Shapiro-Wilk, Levene and ANOVA test, and no significant differences were found between the values of marginal fit of the three types of termination. This is consistent with previous studies, such like the one realised by Syu and col.37 41 Conclusion: lt is concluded that there are no statistically significant differences between the values of marginal fit of the different groups analyzed, with the different cervical finish lines.
The design of a cervical ending on a biological preparation for fixed prosthesis is an important aspect in the long term success of a restoration, since the success of prosthetic rehabilitation depends on the perfect adaptation of the margins to the finish line preparation. Therefore the aim of this study is to compare the marginal fit of metal caps on three types of cervical endings. Methods: lt has been evaluated, by an in vitro experimental study, the marginal fit of different types of designs of cervical finishing lines for PFU (shoulder, bevelled shoulder and chamfer) on cemented metal caps. For this, 30 premolars carved to PFU, were distributed into three groups (each with 1 O teeth) as the design on cervical finish line. Metal complete peripheral caps were produced, which were cemented with glass ionomer cement in their preparations. After this, they were embedded in transparent acrylic to be sectioned in a mesial to distal arder to obtain the samples, then they were observed by an optical microscope system with 2x, in arder to perform the measurement of marginal fit of the metal cap to the biological preparation. Results: The data were statistically analyzed by Shapiro-Wilk, Levene and ANOVA test, and no significant differences were found between the values of marginal fit of the three types of termination. This is consistent with previous studies, such like the one realised by Syu and col.37 41 Conclusion: lt is concluded that there are no statistically significant differences between the values of marginal fit of the different groups analyzed, with the different cervical finish lines.
Notas
Tesis (Odontología)
Palabras clave
Dentadura Parcial Fija, Prótesis Dentales, Restauración Dental, Mejora Contínua de Procesos, Chile