Survival and Complications of Zirconia - Based Fixed Dental Prostheses : A Systematic Review

Raigrodski, Ariel J.; Hillstead, Matthew B.; Meng, Graham K.; Chung, Kwok Hung

doi:10.12816/0010822

Cited by 78 publications

(144 citation statements)

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“…4 Por esta razón, investigadores han tratado de entender y mejorar la resistencia adhesiva de la cerámica de recubrimiento a la zirconia mediante la evaluación de sus propiedades mecánicas, 15 los procesos de fabricación de estructuras en zirconia, 16 tratamientos sobre la superficie de la zirconia 12, 17 y el comportamiento de cerámicas de recubrimiento con diferentes coeficientes de expansión térmica sobre una marca de zirconia en particular.…”

Section: Discussionunclassified

“…3 A pesar de las altas propiedades mecánicas de restauraciones con estructuras a base de zirconia, ensayos clínicos controlados han encontrado un alto porcentaje de complicaciones de desprendimiento o "chipping" de la cerámica de recubrimiento en restauraciones con estructuras en zirconia al ser comparados con restauraciones metal-cerámicas. 4 En referencia a las causas de estas complicaciones, autores sugieren que un diseño inadecuado de la estructura, 5 diferencias en el coeficiente de expansión térmica de las cerámicas 6 y un enfriamiento acelerado de la cerámica de recubrimiento, ocasionan tensión residual excesiva de ésta, generando micro-fracturas o desprendimiento de la cerámica de recubrimiento al recibir cargas masticatorias. 7 Para controlar esta tensión residual se ha sugerido la utilización de protocolos de enfriamiento lento durante el proceso de cocción…”

Section: Introductionunclassified

“…3 Despite the high mechanical properties of zirconiabased restorations, controlled clinical trials have found a higher percentage of complications (such as chipping of the ceramic veneer) in restorations with zirconia structures compared with metalceramic restorations. 4 Concerning the causes of such complications, the authors suggest that inappropriate structure design, 5 differences in the ceramic material's coefficient of thermal expansion, 6 and rapid cooling of the ceramic veneer cause excessive residual tension of it, generating micro-fissures or detachment of the ceramic veneer in the presence of masticatory forces. 7 In order to control this residual pressure, it has been suggested to conduct slow cooling protocols during the firing process, 8 as well as ceramic coatings measuring less than 1.5 mm in thickness.…”

Section: Introductionmentioning

confidence: 99%

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Efecto del liner en la resistencia adhesiva de cerámica feldespática a la zirconia utilizando protocolo de enfriamiento lento

Galeano¹,

Lora²,

Muñoz³

et al. 2015

Rev Fac Odontol Univ Antioq

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Martínez-Galeano G, Bautista-Lora A, Pacheco-Muñoz LF, Garzón-Rayo H. Effect of liner on feldspathic ceramic bond strength to zirconia using a slow cooling protocol. Rev Fac Odontol Univ Antioq 2015; 27 (1) Martínez-Galeano G, Bautista-Lora A, Pacheco-Muñoz LF, Garzón-Rayo H. Efecto del liner en la resistencia adhesiva de cerámica feldespática a la zirconia utilizando protocolo de enfriamiento lento. Rev

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Section: Discussionunclassified

Section: Introductionunclassified

Section: Introductionmentioning

confidence: 99%

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Efecto del liner en la resistencia adhesiva de cerámica feldespática a la zirconia utilizando protocolo de enfriamiento lento

Galeano¹,

Lora²,

Muñoz³

et al. 2015

Rev Fac Odontol Univ Antioq

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“…Clinical and laboratory investigations demonstrated that zirconia frameworks have a low failure rate compared to VCs [8,9]. Clinical failures such as chipping and/or delamination of veneered zirconia in all major brands were reported to be between 11.4% and 25% mainly in posterior FDPs [10,11].…”

Section: Introductionmentioning

confidence: 99%

A study of compressive strength between zirconia framework and veneering ceramic as a function of thermal expansion coefficient using Shell–Nielsen test method

Gökçe

Çötert

Özcan

2015

Journal of Adhesion Science and Technology

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This study investigated the bond strength between a zirconia framework and four veneering ceramic materials with varying coefficients of thermal expansions (CTE) using the Shell Nielsen bond strength test. Zirconia rods (N=40) (ICE Zirkon) (diameter: 4 mm, height: 20 mm) were milled in green state and sintered. After firing, the zirconia rods were air-abraded, ultrasonically and steam cleaned. They were randomly assigned to receive four veneering ceramic materials (n=10/group), namely a) Vita VM9 (VZ; 9-9.2x10 -6 K -1 ), b) Cerabien ZR (CZ; 9.1x10 -6 K -1 ), c) Matchmaker ZR (MM; 9.4x10 -6 K -1 ) and d) IceZirconia Ceramic (IZ; 9.6x10 -6 K -1 ). The veneering ceramics were then fired onto zirconia discs (height: 2 mm, thickness: 2 mm) circumferentially and were thermocycled for 6.000 times (5/55 0 C, dwell time: 30 s).Specimens were loaded from the top of the zirconia rods (crosshead speed: 0.5 mm/min) in a universal failure type between the framework and veneering ceramic followed by mixed failures. Veneering ceramics with a greater mismatch of CTE with the zirconia framework exhibited similar Shell Nielsen bond strength to those with fewer mismatches. Shell Nielsen bond strength test used in this study subjecting the zirconia framework-veneering ceramic assemblies to circumferential shear forces did not show the effect of CTE mismatch between the veneering ceramics accept those between CZ (9.1x10 -6 K -1 ) and IZ (9.6x10 -6 K -1 ).

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“…Moreover, this system seems to behave differently from conventional metal-ceramic prostheses. After three years of service time, chipping of zirconia porcelains is described to have a failure rate of 15%, while this rate for metal-ceramic prostheses is less than 0.5% for crowns and 3% for fixed partial denture in five years [3][4][5][6] . Among the reasons for failure, residual tension is the most discussed issue in the literature [7][8][9][10][11] .…”

Section: Introductionmentioning

confidence: 99%

Strength of 3Y-TZP and feldspathic porcelain subjected to different cooling methods

Almeida-Júnior¹,

Longhini²,

Galvão³

et al. 2014

Braz. J. Oral Sci.

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Aim: To investigate the effect of the cooling rate on flexural strength of monolayer and bilayer porcelain/zirconia (Y-TZP) bars. Methods: Forty-five specimens were made for each design group: (PM) monolithic specimens of veneer porcelain Vita VM9 (Vita, Germany); (ZM) monolithic specimens of zirconia (ZiHP; ProtMat, Brazil); (PB) bilayer specimens zirconia/porcelain with porcelain on lower surface; and (ZB) bilayer specimens porcelain/zirconia with zirconia on lower surface. Each group was cooled by three different methods after porcelain sintering: slowspecimens were cooled inside the turned-off furnace; normal -specimens were removed from the furnace and cooled in air at room temperature; and fast -specimens were removed from the furnace at 910°C and cooled by compressed air for 10 s. Specimens were polished and flexural strength was measured in water at 37 °C (n=15). Maximum load at fracture was recorded, and equations for simple (monolayer) and composite (bilayer) structures were used to calculate the flexural strength. Results were analyzed using one-way ANOVA (p<0.05) and Tukey test separately for each design. Results: The results of one-way ANOVA were statistically significant only for the PB group. The post-hoc Tukey test showed the highest flexural strength for fast cooling and the lowest for slow cooling; the normal cooling was statistically similar to both. Conclusions: Cooling methods affected only the flexural strength of bilayer specimens with porcelain on low surface (under tension) when the slow cooling method was used.

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Survival and Complications of Zirconia - Based Fixed Dental Prostheses : A Systematic Review

Cited by 78 publications

References 0 publications

Efecto del liner en la resistencia adhesiva de cerámica feldespática a la zirconia utilizando protocolo de enfriamiento lento

Efecto del liner en la resistencia adhesiva de cerámica feldespática a la zirconia utilizando protocolo de enfriamiento lento

A study of compressive strength between zirconia framework and veneering ceramic as a function of thermal expansion coefficient using Shell–Nielsen test method

Strength of 3Y-TZP and feldspathic porcelain subjected to different cooling methods

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