The Effect of <i>in vitro</i> Aging and Fatigue on the Flexural Strength of Monolithic High-translucency Zirconia Restorations

Al-Mansour, Hosain; Alqahtani, Fawaz

doi:10.5005/jp-journals-10024-2349

Cited by 11 publications

(3 citation statements)

References 17 publications

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“…Almansour et al ( 2018) investigated the effect of accelerated artificial aging and fatigue on the biaxial flexural strength of 3Y-TZP, 4Y and 5Y-PSZ [48]. The biaxial flexural strength of the high-translucency monolithic zirconia was significantly lower compared with conventional zirconia only without accelerated artificial aging and fatigue, results consistent with Alraheam et al, 2020 [46], and Elsayed et al, 2019 [49].…”

Section: Esthetic Properties Of Translucent Zirconiamentioning

confidence: 63%

Translucent Zirconia in Fixed Prosthodontics—An Integrative Overview

Kui,

Manziuc,

Petruțiu

et al. 2023

Biomedicines

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Over the past two decades, dental ceramics have experienced rapid advances in science and technology, becoming the fastest-growing field of dental materials. This review emphasizes the significant impact of translucent zirconia in fixed prosthodontics, merging aesthetics with strength, and highlights its versatility from single crowns to complex bridgework facilitated by digital manufacturing advancements. The unique light-conducting properties of translucent zirconia offer a natural dental appearance, though with considerations regarding strength trade-offs compared to its traditional, opaque counterpart. The analysis extends to the mechanical attributes of the material, noting its commendable fracture resistance and durability, even under simulated physiological conditions. Various zirconia types (3Y-TZP, 4Y-TZP, 5Y-TZP) display a range of strengths influenced by factors like yttria content and manufacturing processes. The study also explores adhesive strategies, underlining the importance of surface treatments and modern adhesives in achieving long-lasting bonds. In the realm of implant-supported restorations, translucent zirconia stands out for its precision, reliability, and aesthetic adaptability, proving suitable for comprehensive dental restorations. Despite its established benefits, the review calls for ongoing research to further refine the material’s properties and adhesive protocols and to solidify its applicability through long-term clinical evaluations, ensuring its sustainable future in dental restorative applications.

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Section: Esthetic Properties Of Translucent Zirconiamentioning

confidence: 63%

Translucent Zirconia in Fixed Prosthodontics—An Integrative Overview

Kui,

Manziuc,

Petruțiu

et al. 2023

Biomedicines

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“…After sintering, all discs underwent aging in a thermocycler (Delta Tpo 2) for 3500 cycles between 5°C and 55°C with a dwell time of 60 s at 5°C, a transfer time of 10 s, a dwell time of 20 s at 55°C, and a subsequent transfer time of 10 s to simulate the clinical setting (Alqahtani & Almansour, 2018).…”

Section: Agingmentioning

confidence: 99%

Comparative assessment of flexural strength of monolithic zirconia with different thicknesses and two sintering techniques

Karbasian,

Fathi,

Givehchian

et al. 2024

Clinical & Exp Dental Res

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ObjectivesThis study aimed to compare the flexural strength of monolithic zirconia with different thicknesses and two sintering techniques.Materials and MethodsThis in vitro, experimental study was conducted on 28 monolithic zirconia discs with 10 mm diameter and 0.5 (n = 14) and 1.2 mm (n = 14) thickness. Each group was divided into two subgroups (n = 7) for fast (60 min) and conventional (120 min) sintering at 1450°C. After sintering, the specimens were thermocycled and their flexural strength was measured by piston‐on‐3‐balls technique in a universal testing machine (0.5 mm/min, 1.2 mm pin diameter). Data were analyzed by the Weibull test, one‐way analysis of variance, and Tukey's test (α = .05).ResultsThe flexural strength of specimens with 1.2 mm thickness was significantly higher than that of specimens with 0.5 mm thickness (p < .05). The flexural strength of 1.2 mm/120‐min group was slightly, but not significantly, higher than that of 1.2 mm/60‐min group (p > .05). The flexural strength of 0.5 mm/120‐min group was slightly, but not significantly, higher than that of 0.5 mm/60‐min group (p > .05).ConclusionThe increase in thickness of monolithic zirconia increases its flexural strength; however, increasing the sintering time appears to have no significant effect on the flexural strength of monolithic zirconia.

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“…14 The high content of cubic phase grains will reduce the mechanical properties of HTZ zirconia, especially fracture resistance. 15 Based on those problems, it is needed to compare the mechanical properties, especially the fracture resistance between LT and UHT crowns.…”

Section: Introductionmentioning

confidence: 99%

The Comparison of Fracture Resistance between Low Translucent and Ultra-High Translucent Monolithic Zirconia Crown

Tanudjaja,

Bonifacius,

Rikmasari

2022

European Dental Research and Biomaterials Journal

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Objective From the beginning of its discovery, the monolithic zirconia crown was highlighted for its remarkable strength; therefore, only available in opaque color. During the past decade, the translucent monolithic zirconia crown was manufactured to meet the aesthetic and restoration demand but was thought to be the cause of decreasing its strength. This study aimed to compare the fracture resistance between two types of translucent monolithic zirconia crowns, that is, low translucent monolithic zirconia (LT) and ultra-high translucent monolithic zirconia (UHT). Material and Methods The premolar crown model was prepared using a computer-aided design/computer-aided manufacturing system, producing 1 mm of thickness. Ten crown samples were divided into LT and UHT. Then, each sample was measured for its fracture resistance using Universal Testing Machine until a fracture occurred. The differences in fracture resistance were analyzed using an independent t-test with p < 0.05. Result The LT showed a higher fracture resistance than UHT (p < 0.05). Conclusion The LT monolithic zirconia crown has strength and can be used for posterior crown restoration.

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The Effect of in vitro Aging and Fatigue on the Flexural Strength of Monolithic High-translucency Zirconia Restorations

Abstract: Although monolithic high-translucency zirconia had significantly lower BFS than conventional zirconia tested in this study, they still have sufficient strength for clinical use.

Cited by 11 publications

References 17 publications

Translucent Zirconia in Fixed Prosthodontics—An Integrative Overview

Translucent Zirconia in Fixed Prosthodontics—An Integrative Overview

Comparative assessment of flexural strength of monolithic zirconia with different thicknesses and two sintering techniques

The Comparison of Fracture Resistance between Low Translucent and Ultra-High Translucent Monolithic Zirconia Crown

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