Comparative effects of glazing versus polishing on mechanical, optical, and surface properties of zirconia ceramics with different translucencies

IF 1.7 Q3 DENTISTRY, ORAL SURGERY & MEDICINE

Clinical and Experimental Dental Research Pub Date : 2024-05-26 DOI:10.1002/cre2.884

Dr Maryam Jamali DDS,MSc, Dr Fariba Ezoji DDS,MSc, Dr Behnaz Esmaeili DDS,MSc, Soraya Khafri Phd

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引用次数: 0

Abstract

Objectives

This study compared the effects of glazing versus polishing on mechanical, optical, and surface properties of zirconia ceramics with different translucencies.

Materials and Methods

In this in vitro study, 120 bar-shaped specimens (25 × 4 × 1.2 mm) were fabricated from three different types of zirconia with different translucencies (n = 40, DD Bio ZW, ZX2, and Cube X2). After sintering, each zirconia group was randomly divided into five subgroups of control (glazing), glazing + bur abrasion, glazing + bur abrasion + polishing with EVE Diacera® kit, glazing + bur abrasion + reglazing, and glazing + bur abrasion + polishing with EVE Diacera® kit + reglazing. The specimens underwent surface roughness, hardness, flexural strength, and translucency tests, as well as X-ray diffraction (XRD) and scanning electron microscopy (SEM) for assessment of surface topography. Data were analyzed by one-way analysis of variance, Tukey test, and Pearson test (α = .05).

Results

Flexural strength, surface hardness, and translucency were significantly correlated with zirconia type. ZW zirconia had significantly higher flexural strength and surface hardness and significantly lower translucency than Cube X2 and ZX2 (p < .001). Surface roughness had no significant correlation with zirconia type (p = .274). Polishing created the smoothest, and bur abrasion created the roughest surface (p < .001). Flexural strength and hardness in most experimental groups were significantly lower than in the control group (p < .001). Translucency was not significantly different in bur abrasion and polishing groups, compared with the control group; however, reglazing significantly increased the translucency (p < .001). SEM micrographs confirmed the surface roughness results. XRD showed monoclinic phase only in reglazed groups.

Conclusion

Of different surface treatments, polishing improved the surface properties and caused the smallest change in mechanical properties of zirconia with different translucencies.

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上釉与抛光对不同透光度氧化锆陶瓷的机械、光学和表面特性的比较效果。

目的：比较上釉和抛光对不同透光度氧化锆陶瓷的机械、光学和表面特性的影响：本研究比较了施釉与抛光对不同透光度氧化锆陶瓷的机械、光学和表面特性的影响：在这项体外研究中，我们用三种不同透光度的氧化锆（n = 40，DD Bio ZW、ZX2 和 Cube X2）制作了 120 个棒状试样（25 × 4 × 1.2 毫米）。烧结后，每组氧化锆被随机分为五个子组：对照组（上釉）、上釉 + 毛刺磨损组、上釉 + 毛刺磨损 + 使用 EVE Diacera® 套件抛光组、上釉 + 毛刺磨损 + 再上釉组和上釉 + 毛刺磨损 + 使用 EVE Diacera® 套件抛光 + 再上釉组。试样进行了表面粗糙度、硬度、抗弯强度和透光度测试，并使用 X 射线衍射 (XRD) 和扫描电子显微镜 (SEM) 评估表面形貌。数据分析采用单因素方差分析、Tukey 检验和 Pearson 检验（α = .05）：结果：抗弯强度、表面硬度和半透明度与氧化锆类型显著相关。与 Cube X2 和 ZX2 相比，ZW 型氧化锆的抗弯强度和表面硬度明显更高，而透光度则明显更低（p）：在不同的表面处理方法中，抛光能改善氧化锆的表面性能，对不同半透明氧化锆的机械性能造成的变化最小。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Clinical and Experimental Dental Research DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

3.30

自引率

5.60%

发文量

165

审稿时长

26 weeks

期刊介绍： Clinical and Experimental Dental Research aims to provide open access peer-reviewed publications of high scientific quality representing original clinical, diagnostic or experimental work within all disciplines and fields of oral medicine and dentistry. The scope of Clinical and Experimental Dental Research comprises original research material on the anatomy, physiology and pathology of oro-facial, oro-pharyngeal and maxillofacial tissues, and functions and dysfunctions within the stomatognathic system, and the epidemiology, aetiology, prevention, diagnosis, prognosis and therapy of diseases and conditions that have an effect on the homeostasis of the mouth, jaws, and closely associated structures, as well as the healing and regeneration and the clinical aspects of replacement of hard and soft tissues with biomaterials, and the rehabilitation of stomatognathic functions. Studies that bring new knowledge on how to advance health on the individual or public health levels, including interactions between oral and general health and ill-health are welcome.

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