The Effect of Multiple Firings on Microtensile Bond Strength of Core‐Veneer Zirconia‐Based All‐Ceramic Restorations

Zeighami, Somayeh; Mahgoli, Hosseinali; Farid, Farzaneh; Azari, Ali

doi:10.1111/j.1532-849x.2012.00889.x

Cited by 25 publications

(24 citation statements)

References 14 publications

(21 reference statements)

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“…Compared to the manually-layered porcelain, the uniform surface quality of DVS-based glass ceramic ensured fewer defects, although this study performed no quantitative measurements for the comparison of defects. As DVS uses milled ceramic blocks, specimens fabricated using the DVS-based glass ceramic also had less firing-related shrinkage 18) . Additionally, the coefficients of thermal expansion (CTEs) of DVS ceramic and fusion porcelain were slightly lower than that of the conventionally layered porcelain used in this study (Table 1), resulting in a larger difference from the CTE of the zirconiabased framework.…”

Section: Discussionmentioning

confidence: 99%

Digital veneering system enhances microtensile bond strength at zirconia coreveneer interface

et al. 2014

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This study investigated the effect of digital veneering system (DVS) on strengthening the bond between a zirconia core and ceramic veneer. Specimens for Groups 1 (negative control), 2 (positive control), 3, and 4 used conventional porcelain veneering technique on untreated, sandblasted, coloring agent-treated, and modifier-treated zirconia cores respectively. Group 5 used DVS, where glass ceramic veneers -produced by computer-aided milling-were fused to zirconia cores. Microtensile bond strengths (MTBS) at the interface were measured. MTBS results of Groups 1 to 5, expressed in mean (standard deviation), were 28.1 (7.3), 27.8 (6.3), 30.0 (10.2), 32.9 (8.1), and 37.8 (8.1) MPa. The DVS group had significantly higher MTBS than the negative and positive controls (p<0.05). Results showed that DVS enhanced the bond strength between zirconia core and ceramic veneer, indicating that this system could reduce adhesive failure-related complications that frequently occur at the zirconia core-veneer interface.

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Section: Discussionmentioning

confidence: 99%

Digital veneering system enhances microtensile bond strength at zirconia coreveneer interface

et al. 2014

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“…La potencial influencia negativa de cocciones repetidas se confirma con el estudio in vitro de Zeighami y cols. (13) en el que expone una disminución de la resistencia al test de microtensión entre cerámica de recubrimiento y subestructuras de circonio, lo que realza las ventajas de evitar nuevas cocciones.…”

Section: Discussionunclassified

Cerámica libre de metal terminada y caracterizada por pulido manual

Grandon

Galdames

Marcus

et al. 2018

Rev. Clin. Periodoncia Implantol. Rehabil. Oral

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REsUMEnLa rehabilitación oral mediante prótesis libres de metal ha dado solución funcional y estética a diversas situaciones clínicas, sin embargo, coronas unitarias anteriores aún son consideradas un gran desafío estético. En ellas, al igual que en estructuras métalo-cerámicas, brillo y lisura superficial se obtienen comúnmente mediante glaseado. Esta técnica puede presentar algunas limitaciones para replicar características de superficie, especialmente en dientes con gran riqueza microanatómica. caso: El objetivo es presentar la rehabilitación anterior unitaria mediante corona IPS E.max® terminada mediante pulido manual, logrando así ajustes clínicos, personalización microanatómica y una superficie suave y brillante, culminando con un resultado estético muy satisfactorio. conclusiones: El acabado manual es un procedimiento ampliamente documentado, de fácil ejecución y bajo costo. Podría disminuir envíos repetidos al laboratorio protésico y así los efectos asociados a la sobrecocción cerámica, sin embargo, requiere conocimiento del tipo de cerámica a pulir y una aplicación sistemática. PalaBRas claVECerámicas dentales, Técnicas de pulido, Biomimética, Libre de metal.Rev. clin. Periodoncia implantol. Rehabil. oral Vol. 11(1); 39-42, 2018. aBsTRacTOral rehabilitation through metal free prosthetics has given functional and aesthetic solutions to various clinical conditions; nevertheless, single-tooth rehabilitation in the anterior region is still considered a major challenge. In these crowns as well as in metallo-ceramic structures, the finishing is obtained by the glazing technique. This technique could show some limitations to replicate the surface characteristics, especially in teeth with a rich micro-anatomy. case Report: The aim is to present an anterior single-tooth rehabilitation with IPS E.max® crown, and its finishing by hand polishing technique, achieving clinical adjustments and customized surface anatomy, a smooth surface, excellent brightness and a very satisfactory aesthetic result. conclusions: Manual finishing technique is well documented, easy to execute and with low cost. Eventually, it could decrease repeated laboratory shipments and so the associated effects of the over-cooking of ceramic; nevertheless it requires knowledge of the type of ceramic to polish and a systematic clinical protocol implementation. inTRoDUcción Los tratamientos rehabilitadores en el sector anterior requieren de materiales altamente predecibles y capaces de emular las características ópticas de las estructuras a reemplazar. Es por esto que las restauraciones libres de metal han ganado un importante espacio en el tratamiento de pacientes con elevadas demandas estéticas, abriendo un abanico de nuevas opciones que facilitan una integración biomimética y mayor conservación de la estructura dentaria sana (1) . Al enfrentarse a dientes tratados endodónticamente, especialmente aquellos que evidencian cracks o fisuras, la evidencia se inclina por restauraciones de recubrimiento completo, pudiendo éstas disminuir el riesgo de fra...

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“…This is in agreement with the present study, where the flexural strength was higher when specimens were fired with 3 or 5 cycles instead of 1. Zheighami et al [57] showed that a greater number of firing cycles (from 4 to 8) worsened the bonding potential of Zirconia restorations. The three former studies were performed in a micro-tensile set-up, differently from the present study.…”

Section: Discussionmentioning

confidence: 99%

“…The possible effect of multiple firings has also been investigated. It has been reported that the number of firings does not influence the strength of zirconia itself [54][55][56], while it has been reported to affect the bond strength to the core material [57][58][59] as well as the flexural resistance of the veneering ceramic tested without the zirconia substrate [60]. No literature indications were found about flexural resistance of veneering layer in a bi-layered specimen, with the veneering ceramic fired on a zirconia substrate.…”

Section: Introductionmentioning

confidence: 99%

Effect of repeated firings on flexural strength of veneered zirconia

Vichi¹,

Sedda²,

Bonadeo³

et al. 2015

Dental Materials

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The Effect of Multiple Firings on Microtensile Bond Strength of Core‐Veneer Zirconia‐Based All‐Ceramic Restorations

Abstract: Increase in firing cycles decreased MTBS. Most of the failures (90-95%) in all three groups were cohesive in the veneering porcelain and did not change as the number of firing cycles increased.

Cited by 25 publications

References 14 publications

Digital veneering system enhances microtensile bond strength at zirconia coreveneer interface

Digital veneering system enhances microtensile bond strength at zirconia coreveneer interface

Cerámica libre de metal terminada y caracterizada por pulido manual

Effect of repeated firings on flexural strength of veneered zirconia

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