不同浓度的过氧化卡巴酰胺对 CAD/CAM 牙科陶瓷的颜色、表面粗糙度和硬度的影响。

IF 1.7 Q3 DENTISTRY, ORAL SURGERY & MEDICINE Clinical and Experimental Dental Research Pub Date : 2024-07-05 DOI:10.1002/cre2.916
Saman Jamshidi, Homayoun Alaghemand, Behnaz Esmaeili, Hemmat Gholinia
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引用次数: 0

摘要

研究目的:本研究评估了 15% 和 20% 过氧化碳(CP)对计算机辅助设计/计算机辅助制造(CAD/CAM)牙科陶瓷的颜色、表面粗糙度和硬度的影响:这项体外研究是在 120 个 Vita Mark II、Celtra Duo 和 Suprinity CAD/CAM 陶瓷试样上进行的。每组(n = 40)的陶瓷试样被随机分配到两个亚组(n = 20)进行抛光和上釉,并对其基线颜色、表面粗糙度(Ra)和硬度进行评估。在每个分组中,一半试样暴露于 15% 的氯化石蜡,另一半暴露于 20% 的氯化石蜡。然后再次测量它们的颜色变化(ΔE)、表面粗糙度和硬度。分别用轮廓仪、维氏硬度计和分光光度计对表面粗糙度、硬度和颜色进行分析。数据分析采用重复测量方差分析、单因素方差分析和事后 Bonferroni 检验(α = 0.05):结果:漂白处理后,所有组的表面粗糙度都明显增加(p 结论:漂白处理后,所有组的表面粗糙度都明显增加:本研究结果表明,CP 浓度和表面处理类型会影响 CAD/CAM 陶瓷的表面特性。表面处理类型只影响 Vita Mark II 陶瓷的表面硬度(p
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Effects of Different Concentrations of Carbamide Peroxide on Color, Surface Roughness, and Hardness of CAD/CAM Dental Ceramics

Objectives

This study assessed the effects of 15% and 20% carbamide peroxide (CP) on color, surface roughness, and hardness of computer-aided design/computer-aided manufacturing (CAD/CAM) dental ceramics.

Materials and Methods

This in vitro study was conducted on 120 Vita Mark II, Celtra Duo, and Suprinity CAD/CAM ceramic specimens. The ceramic specimens in each group (n = 40) were randomly assigned to two subgroups (n = 20) for polishing and glazing, and their baseline color, surface roughness (Ra), and hardness were assessed. In each subgroup, half of the specimens were exposed to 15% CP, while the other half were exposed to 20% CP. Their color change (ΔE), surface roughness, and hardness were then measured again. Surface roughness, hardness, and color were analyzed sequentially by profilometer, Vickers hardness tester, and spectrophotometer, respectively. Data were analyzed by repeated measures ANOVA, one-way ANOVA, and post hoc Bonferroni test (α = 0.05).

Results

The surface roughness of all groups significantly increased after bleaching treatment (p < 0.05). Surface hardness of all groups decreased after bleaching treatment, but this reduction was only significant in Vita Mark II subgroups (glazed, polished, 15%, and 20% CP). The ΔE was not clinically and visually perceivable in any group.

Conclusion

The present results revealed that concentration of CP and type of surface treatment affected the surface properties of CAD/CAM ceramics. Type of surface treatment only affected the surface hardness of Vita Mark II ceramics (p < 0.05). Concentration of CP had a significant effect only on polished Vita Mark II.

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来源期刊
Clinical and Experimental Dental Research
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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