Comparative evaluation of surface roughness of posterior primary zirconia crowns

Walia, Tarun; Brigi, Carel; KhirAllah, Abdel Rahman M M

doi:10.1007/s40368-018-0382-4

Cited by 14 publications

(6 citation statements)

References 28 publications

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“…The zirconium dioxide all-ceramic crown will not cause gingival staining as it has no metal support in the neck. Moreover, it has good transparency and refraction, with the color close to that of natural teeth and high color matching with adjacent teeth, which can achieve good aesthetic effect [19]. In this paper, the fracture of the MCC group was found to be worse than that of the ZC group in the evaluation of restoration fracture.…”

Section: Discussionmentioning

confidence: 68%

Comparison of Short-Term Restorative Effects and Periodontal Health Status of Restorations Made of Different Materials in Full-Crown Restoration of Mandibular Premolar Tooth Defects

Zhang

Zhang²,

Wang

2022

Disease Markers

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Purpose. To compare the short-term restorative effect and periodontal health status of restorations with different materials in full-crown restoration of mandibular premolar tooth defects. Methods. A total of 105 cases (123 affected teeth) of mandibular premolar tooth defects who visited the Department of Stomatology between January 2019 and January 2020 were selected, of which 58 cases (68 affected teeth) restored with cobalt-chromium alloy porcelain crowns were included in the metal-ceramic crown (MCC) group and 47 cases (55 affected teeth) repaired by zirconium dioxide all-ceramic crowns were assigned to the zirconia crown (ZC) group. The restorative effect, inflammatory factors (high-sensitivity C-reactive protein (hs-CRP) and tumor necrosis factor-α (TNF-α)) and periodontal health indicators (human cartilage glycoprotein-39 (YKL-40), resistin, aspartate aminotransferase (AST), and alkaline phosphatase (ALP)) after treatment, and the occurrence of adverse reactions were compared between the two groups. Results. The ZC group outperformed the MCC group in terms of margin fitness, restoration fracture, gingival condition, and color matching. After restoration, hs-CRP and TNF-α were statistically decreased in both groups, while YKL-40, resistin, AST, and ALP were significantly increased; and compared with the MCC group, hs-CRP, TNF-α, YKL-40, resistin, AST, and ALP were lower in the ZC group. The ZC group also scored statistically higher in retention effect, aesthetic effect, masticatory function, voice function, and comfort. Moreover, the ZC group had a higher total effective rate and a lower incidence of adverse reactions than the MCC group, with statistical significance. Conclusions. Zirconia dioxide all-ceramic crowns contribute to a better short-term restorative effect in the full-crown restoration of mandibular premolar tooth defects, with little impact on periodontal health and high patient satisfaction, which deserves popularization and application.

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Section: Discussionmentioning

confidence: 68%

Comparison of Short-Term Restorative Effects and Periodontal Health Status of Restorations Made of Different Materials in Full-Crown Restoration of Mandibular Premolar Tooth Defects

Zhang

Zhang²,

Wang

2022

Disease Markers

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“…Contrary to Ra, which is measured over a line, Sa is a two dimensional measurement and thus the results of surface roughness parameters are not directly comparable with previously published data, especially among surfaces with varying textures such as zirconia crowns with oriented parallel striations. [24,28]. All crowns tested demonstrated these patterns (Figure 1) of oriented parallel striations, which should be appended to milling of crowns from prefabricated zirconia blocks.…”

Section: Discussionmentioning

confidence: 97%

Surface, Microstructural, and Mechanical Characterization of Prefabricated Pediatric Zirconia Crowns

Diener

Polychronis

Erb³

et al. 2019

Materials

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The purpose of this study was to characterize the surface roughness, the microstructure, and mechanical properties of four prefabricated zirconia pediatric crowns. Ten prefabricated crowns from four different manufacturers (Cheng Crowns Zirconia), (EZCrowns), (NuSmile ZR), and (Zirconia Pediatric Crowns) were included in this study. The surface roughness parameters (Sa, Sq, Sz, Sc, and Sv) of all samples were studied by optical profilometry and then the microstructure was studied by Raman spectroscopy. Then, all samples were embedded in epoxy resin and after metallographic polishing, the Martens hardness (HM), indentation modulus (EIT), elastic index (ηIT), Vickers hardness (HV), and fracture toughness (KIC) were identified by the Instrumented Indentation Testing (IIT). All data were statistically analyzed by a one-way ANOVA and a Tukey multiple comparison test at α = 0.05. Only the tetragonal phase of zirconia for all materials tested was identified after Raman analysis. However, statistically significant differences were found among the surface roughness parameters, HV and KIC, while no differences were allocated for HΜ, EIT, and ηΙΤ. Although the materials tested shared a similar microstructure, significant differences in surface roughness parameters HV and KIC were identified and, thus, differences in their clinical performance were anticipated.

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“…Although KKZ has a glazed occlusal surface, NSZ and SC are subjected to a polish. In the case of mechanical stress, polished zirconia crowns show no changes in the surface, but with glazed zirconia crowns the surface glaze layer is loosened and thus a loss of material of approximately 20‐50 µm 34 . Additionally, Walia et al 34 showed significantly less surface roughness in polished NSZ and SC (0,35‐0,45 µm) than in glazed KKZ (0,6‐1,04 µm).…”

Section: Discussionmentioning

confidence: 97%

“…In the case of mechanical stress, polished zirconia crowns show no changes in the surface, but with glazed zirconia crowns the surface glaze layer is loosened and thus a loss of material of approximately 20‐50 µm 34 . Additionally, Walia et al 34 showed significantly less surface roughness in polished NSZ and SC (0,35‐0,45 µm) than in glazed KKZ (0,6‐1,04 µm). Rough surfaces influence not only the material thickness, but also susceptibility to fractures.…”

Section: Discussionmentioning

confidence: 97%

Wear and marginal quality of aesthetic crowns for primary molars

Möhn

Frankenberger

Krämer

2021

Int J Paed Dentistry

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Background Due to limited aesthetics of stainless‐steel crowns, the demand for tooth‐coloured crowns has recently risen. Few studies have investigated the marginal integrity and wear behaviour of tooth‐coloured primary molar crowns under subcritical load in vitro. Aim This in vitro study evaluated the marginal quality and wear of newly introduced resin composite and hybrid ceramic crowns compared with metal and zirconia crowns. Design Metal, resin composite, hybrid ceramic (CAD/CAM), and various zirconia crowns were investigated. After thermomechanical loading (2,500 thermocycles/100,000 × 50N), marginal quality of luting gaps and wear of crowns/antagonists were evaluated using replicas under a light or 3D laser scanning microscope. Results were analysed with the Mann‐Whitney U test or one‐way ANOVA (p < .05). Results Marginal quality of the new resin composite and hybrid ceramic crowns performed well in comparison with SSC and zirconia crowns. Adhesive bonding of crowns resulted in superior marginal seal compared with conventional GIC (Mann‐Whitney U test, p < .05). Regarding wear, zirconia crowns exhibited significantly worse results than resin composite or hybrid ceramic crowns and SSCs (ANOVA, p < 0.05). Conclusion The new resin composite and hybrid ceramic crown exhibited good performance in comparison with SSCs and zirconia crowns considering both wear and marginal quality after subcritical loading.

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Comparative evaluation of surface roughness of posterior primary zirconia crowns

Cited by 14 publications

References 28 publications

Comparison of Short-Term Restorative Effects and Periodontal Health Status of Restorations Made of Different Materials in Full-Crown Restoration of Mandibular Premolar Tooth Defects

Comparison of Short-Term Restorative Effects and Periodontal Health Status of Restorations Made of Different Materials in Full-Crown Restoration of Mandibular Premolar Tooth Defects

Surface, Microstructural, and Mechanical Characterization of Prefabricated Pediatric Zirconia Crowns

Wear and marginal quality of aesthetic crowns for primary molars

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