10-year randomized trial (RCT) of zirconia-ceramic and metal-ceramic fixed dental prostheses

Sailer, Irena; Balmer, Marc; Hüsler, Jürg; Hämmerle, Christoph H.F.; Känel, Sarah; Thoma, Daniel S.

doi:10.1016/j.jdent.2018.05.015

Cited by 163 publications

(183 citation statements)

References 23 publications

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“…Zirconia ceramic has excellent mechanical properties 4,5) , however is highly opaque due to its completely crystalline microstructure, thus the framework must be covered with veneering porcelain for more acceptable esthetic outcome 6) . But regardless of the high strength of the zirconia ceramic, one of the most important clinical problems is the chipping of the veneering ceramic according to the different clinic studies 3,[7][8][9] . This complication creates an uncertainly as regards the long-term clinical behavior of the zirconia bi-layered restorations 10) .…”

Section: Introductionmentioning

confidence: 99%

Comparative fracture behavior of monolithic and veneered zirconia posterior fixed dental prostheses

et al. 2017

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The purpose of this study was to evaluate and to compare the fracture load and the fracture pattern of monolithic and veneered zirconia posterior fixed dental prostheses (FDPs). Twenty standardized steel dies were prepared to receive posterior 3-unit FDPs. Specimens were randomly divided into 2 groups (n=10): (1) Lava Zirconia, and (2) Lava Plus. All FDPs were cemented using glass ionomer cement and subjected to thermal and mechanical cycling at 5-55ºC with a 30-s dwell time for 120,000 masticatory cycles. All specimens were subjected to a three-point bending test until fracture. Data were statistically analyzed using Student's t test, paired t-test and Weibull statistics (α=0.05). No differences were observed in fracture load between the groups. Veneering ceramic fractured before than framework in veneered zirconia group. The fracture pattern was different. The tested groups demonstrated clinically acceptable fracture load values. Monolithic zirconia solves the chipping problem.

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Section: Introductionmentioning

confidence: 99%

Comparative fracture behavior of monolithic and veneered zirconia posterior fixed dental prostheses

et al. 2017

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“…FDPs are well documented in clinical studies with long-term data and based on systematic reviews with high survival and success rates (Sailer et al, 2009, Lulic et al, 2007, Tan et al, 2004, Pjetursson et al, 2015. In the pontic area, various designs with or without contact to the underlying soft tissues were proclaimed (Johnson & Leary, 1992, Korman, 2015, Gahan et al, 2012.…”

Section: Introductionmentioning

confidence: 99%

Volumetric changes at pontic sites with or without soft tissue grafting: a controlled clinical study with a 10‐year follow‐up

Bienz

Sailer

Sanz‐Martín

et al. 2017

J Clinic Periodontology

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Objective To evaluate volumetric changes of soft tissues at pontic sites in patients treated with or without soft tissue grafting over an observation period of 10 years. Materials and Methods A total of 17 patients receiving a tooth‐borne fixed dental prosthesis (FDP) were enrolled in this study. Nine patients received a subepithelial connective tissue graft (SCTG) at the pontic site (test). Eight patients continued without soft tissue grafting (control). Baseline impressions were taken after delivery of the final FDP and at 10 years. Casts were scanned and digital images were superimposed for volumetric and linear measurements: the mean distance (MD) between the surfaces at the mid‐buccal area, the pontic height (PH) and the ridge width (RW). All comparisons were performed applying the Wilcoxon–Mann–Whitney test. Results The median follow‐up time was 123 months. Median MD between baseline and 10 years was −0.64 mm (Min: −2.39; Max: −0.02) (test) and −0.22 mm (Min: −1.07; Max: 0.06) (control). The change of PH (recession) was −0.33 mm (Min: −0.82; Max: 0.06) (test) and −0.17 mm (Min: −0.8; Max: 0.23) (control). The median differences in RW 1 mm below the crest were −0.62 mm (Min: −1.17; Max: 0.22) (test) and −0.2 mm (Min: −1.9; Max: 0.28) (control). None of the differences between the groups were significant (p > 0.05). Conclusions Limited by a retrospective study design, pontic sites with or without soft tissue augmentation by means of a SCTG underlie minimal changes over an observation period of 10 years.

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“…Because the veneering glass ceramic is the weakest part in this system, clinically observed failures are mainly restricted to the veneer layer [30].…”

Section: Simulation Methods Applied In All-ceramic Bilayered Crownsmentioning

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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10-year randomized trial (RCT) of zirconia-ceramic and metal-ceramic fixed dental prostheses

Abstract: At 10 years, ZC and MC posterior FDPs resulted in similar outcomes for the majority of the outcome measures (p > 0.05).

Cited by 163 publications

References 23 publications

Comparative fracture behavior of monolithic and veneered zirconia posterior fixed dental prostheses

Comparative fracture behavior of monolithic and veneered zirconia posterior fixed dental prostheses

Volumetric changes at pontic sites with or without soft tissue grafting: a controlled clinical study with a 10‐year follow‐up

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

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