Effect of Cement Type on Marginal Microleakage of Zirconia Crowns with or without Cervical Margin Relocation: An In Vitro Study.

IF 1.4 4区 医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE
R I Farah
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引用次数: 0

Abstract

This study evaluated the microleakage in zirconia crowns cemented with bioactive vs resin cements at two margin locations: cementum/dentin deep margin and composite-elevated margins. Standardized mesial box cavities were prepared in 30 molar teeth, with proximal cavosurface margins placed 1 mm below the cemento-enamel junction (CEJ) and restored with resin composite. The teeth were prepared for zirconia crowns, with mesial margins on the composite and distal margins on tooth structure 1 mm below the CEJ. Following digitization and zirconia crown fabrication, the specimens were randomly allocated into five groups based on the type of cement used: one multistep adhesive resin, one self-adhesive resin, one bioactive hybrid ionic resin, and two bioceramic cements. Microleakage was evaluated by measuring the percentage of dye penetration depth at the interfaces, with data analyzed using two-way ANOVA. The results revealed a significant interaction between cement type and margin location, with elevated margins exhibiting less leakage than deep ones across all cement types (p≤0.001). However, the effect of margin location on microleakage varied depending on the cement type, with variations in microleakage scores at each margin location ranging from statistically nonsignificant (p>0.05) to statistically significant (p≤0.05). Adhesive resin and hybrid bioactive cements significantly outperformed others in reducing microleakage at both margin interfaces.

骨水泥类型对颈缘移位前后氧化锆冠边缘微渗漏的影响。
本研究评估了生物活性与树脂胶结的氧化锆冠在牙骨质/牙本质深缘和复合凸缘两个边缘位置的微渗漏情况。在30颗磨牙中制备标准化的近端箱形腔,近端牙槽面边缘位于牙骨质-牙釉质交界处(CEJ)下方1mm处,并使用树脂复合材料修复。制备氧化锆冠,近缘在复合材料上,远缘在CEJ下方1mm的牙结构上。在数字化和氧化锆冠制作完成后,根据所使用的粘接树脂、自粘接树脂、生物活性混合离子树脂和生物陶瓷粘接树脂的类型,将标本随机分为五组。通过测量染料在界面处渗透深度的百分比来评估微泄漏,并使用双向方差分析分析数据。结果显示,水泥类型和边缘位置之间存在显著的相互作用,在所有水泥类型中,高边缘比深边缘的渗漏更少(p≤0.001)。然而,切缘位置对微渗漏的影响因水泥类型而异,各切缘位置的微渗漏评分变化从统计学上无统计学意义(p < 0.05)到统计学上有统计学意义(p≤0.05)。粘接树脂和杂化生物活性水泥在减少边缘界面微渗漏方面明显优于其他水泥。
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
Operative dentistry
Operative dentistry 医学-牙科与口腔外科
CiteScore
4.00
自引率
9.10%
发文量
124
审稿时长
6-12 weeks
期刊介绍: Operative Dentistry is a refereed, international journal published bi-monthly and distributed to subscribers in over 50 countries. In 2012, we printed 84 articles (672 pages). Papers were submitted by authors from 45 countries, in the categories of Clinical Research, Laboratory Research, Clinical Techniques/Case Presentations and Invited Papers, as well as Editorials and Abstracts. One of the strong points of our journal is that our current publication time for accepted manuscripts is 4 to 6 months from the date of submission. Clinical Techniques/Case Presentations have a very quick turnaround time, which allows for very rapid publication of clinical based concepts. We also provide color for those papers that would benefit from its use. The journal does not accept any advertising but you will find postings for faculty positions. Additionally, the journal also does not rent, sell or otherwise allow its subscriber list to be used by any other entity
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