Conventional and Modified Veneered Zirconia vs. Metalloceramic: Fatigue and Finite Element Analysis

Silva, Nelson R.F.A.; Bonfante, Estevam A.; Rafferty, Brian T.; Zavanelli, Ricardo Alexandre; Martins, Leandro Luís; Rekow, E. Dianne; Thompson, Van P.; Coehlo, Paulo G.

doi:10.1111/j.1532-849x.2012.00861.x

Cited by 47 publications

(37 citation statements)

References 31 publications

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“…Such failure mechanisms suggest that recommendations traditionally made for porcelain veneered reconstructions, regarding the need of a substructure designed to provide porcelain even thickness [37][38][39], do not apply to the evaluated resin nanoceramic material. As shown in this study and previously [17], no substructure supporting the final crown was present, resulting in large amounts of "unsupported" material. Still, the required amount of support, if any, is yet to be determined for this class of material.…”

Section: Discussionsupporting

confidence: 77%

“…When an indirect resin composite is directly layered onto an abutment (e.g. as an IAC ® ) voids are also introduced during layering, which may decrease its probability of survival when compared to the same crown material fabricated through CAD/CAM [17]. This assumption warrants further investigation.…”

Section: Discussionmentioning

confidence: 99%

“…Considering that fatigue plays a more relevant role in simulating clinical failures [16], recent studies have evaluated the use of hand-layered indirect composites for implant-supported molar crowns and found promising probability of survival (reliability) when tested under fatigue [17,18]. Given that flaws, such as voids, are inherently introduced when an indirect composite is hand-layered, pressed blocks of resin nanoceramics have been developed for milling through the CAD/CAM process from several companies in attempt to further improve them from a fatigue resistance perspective.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Probability of survival of implant-supported metal ceramic and CAD/CAM resin nanoceramic crowns

Bonfante¹,

Suzuki²,

Lorenzoni³

et al. 2015

Dental Materials

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Section: Discussionsupporting

confidence: 77%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Probability of survival of implant-supported metal ceramic and CAD/CAM resin nanoceramic crowns

Bonfante¹,

Suzuki²,

Lorenzoni³

et al. 2015

Dental Materials

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“…The chipping of porcelain veneer layer is the most frequent failure of all-ceramic prostheses [ 193 ]. Leucite glass ceramics are used in restorative dentistry as a veneer material for all-ceramic restorations.…”

Section: Indirect Restorative Systemsmentioning

confidence: 99%

Nanotechnology in Endodontics

Kishen¹

2015

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“…Optimization of the zirconia substructure design has been proven as a considerable factor in reducing chipping failures, and coping modiications are still a topic of current investigations [14,21].…”

Section: Introductionmentioning

confidence: 99%

Assessment of All-Ceramic Dental Restorations Behavior by Development of Simulation-Based Experimental Methods

Topală¹,

Porojan²

2017

Insights Into Various Aspects of Oral Health

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New dental materials are often introduced into the market and especially in the current practice, without a basic understanding of their clinical performance because long-term controlled clinical trials are required, which are both time consuming and expensive. Ceramic materials are known for their relatively high fracture resistance and improved aesthetics, but britleness remains a concern. The stressed areas of the materials are key factors for the failure analysis, and numerical simulations may play an important role in the understanding of the behavior of all-ceramic restorations. Simulation-based medicine and the development of complex computer models of biological structures are becoming ubiquitous for advancing biomedical engineering and clinical research. The studies have to be focused on the analysis of all-ceramic restorations failures, investigating several parameters involved in the tooth structure-restoration complex, in order to improve clinical performances. The experiments have to be conducted and interpreted reported to the britle behavior of ceramic systems. Varied simulation methods are promising to assess the biomechanical behavior of all-ceramic systems, and irst principal stress criterion is an alternative for ceramic materials investigations. The development of well-designed experiments could be useful to help to predict the clinical behavior of these new allceramic restorative techniques and materials.

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Conventional and Modified Veneered Zirconia vs. Metalloceramic: Fatigue and Finite Element Analysis

Abstract: FEA showed higher levels of stress for both Y-TZP core designs and veneer layers compared to MCR. Core design modification resulted in fatigue reliability response of Y-TZP comparable to MCR at 100,000 cycles and 200 N. Fracture modes observed matched with clinical scenarios.

Cited by 47 publications

References 31 publications

Probability of survival of implant-supported metal ceramic and CAD/CAM resin nanoceramic crowns

Probability of survival of implant-supported metal ceramic and CAD/CAM resin nanoceramic crowns

Nanotechnology in Endodontics

Assessment of All-Ceramic Dental Restorations Behavior by Development of Simulation-Based Experimental Methods

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