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上釉对全瓷氧化锆弯曲强度的影响

Effect of Glazing on Flexural Strength of Full-Contour Zirconia.

作者信息

Kumchai Hattanas, Juntavee Patrapan, Sun Arthur F, Nathanson Dan

机构信息

Department of Restorative Sciences & Biomaterials, Boston University Henry M. Goldman School of Dental Medicine, Boston, MA, USA.

出版信息

Int J Dent. 2018 Feb 5;2018:8793481. doi: 10.1155/2018/8793481. eCollection 2018.

DOI:10.1155/2018/8793481
PMID:29666648
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5832119/
Abstract

OBJECTIVE

The purpose of this study was to evaluate the effect of glazing on flexural strength of highly translucent zirconia materials.

MATERIALS AND METHODS

Specimens of three brands of zirconia bars (Prettau Zirconia, Zirkonzahn; inCoris TZI, Sirona; and Zirlux FC, Pentron Ceramics) were prepared and polished according to manufacturers' instructions. Final specimen dimensions were 20 × 4 × 2 mm. The specimens from each brand were divided into 3 groups ( = 10): control, heat-treated, and glazed. Heat-treated specimens were fired without the application of the glaze material. The glaze material was applied to the glazed specimens before being fired. A three-point bending test (15 mm span) was performed in an Instron universal testing machine (ISO 6872). Data were analyzed by ANOVA and Tukey's HSD post hoc test ( = 0.05).

RESULTS

Two-way ANOVA showed a significant influence of surface treatments on flexural strength of zirconia materials ( ≤ 0.05). There was no significant difference in flexural strength among the different brands of highly translucent zirconia ( ≥ 0.05). Tukey's HSD post hoc test showed that specimens in the "glazed" group had significantly lower flexural strength than the control and heat-treated groups ( ≤ 0.05).

CONCLUSION

Within the limitations of the study, external glazing decreased the flexural strength of highly translucent zirconia.

摘要

目的

本研究旨在评估上釉对高透明度氧化锆材料抗弯强度的影响。

材料与方法

制备了三个品牌的氧化锆棒试件（Prettau Zirconia，Zirkonzahn公司；inCoris TZI，西诺德公司；以及Zirlux FC，Pentron Ceramics公司），并按照制造商的说明进行抛光。最终试件尺寸为20×4×2毫米。每个品牌的试件分为3组（每组 = 10个）：对照组、热处理组和上釉组。热处理试件在不施加釉料的情况下烧制。在上釉试件烧制前施加釉料。在Instron万能材料试验机（ISO 6872）上进行三点弯曲试验（跨度15毫米）。数据采用方差分析和Tukey's HSD事后检验进行分析（α = 0.05）。

结果

双向方差分析表明，表面处理对氧化锆材料的抗弯强度有显著影响（P≤0.05）。不同品牌的高透明度氧化锆之间的抗弯强度没有显著差异（P≥0.05）。Tukey's HSD事后检验表明，“上釉”组的试件抗弯强度显著低于对照组和热处理组（P≤0.05）。

结论

在本研究的局限性范围内，外部上釉降低了高透明度氧化锆的抗弯强度。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a1d4/5832119/e7bcfe497da2/IJD2018-8793481.002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a1d4/5832119/25e62c9faaaf/IJD2018-8793481.001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a1d4/5832119/e7bcfe497da2/IJD2018-8793481.002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a1d4/5832119/25e62c9faaaf/IJD2018-8793481.001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a1d4/5832119/e7bcfe497da2/IJD2018-8793481.002.jpg

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