Marginal Quality and Wear of Bulk-fill Materials for Class-II Restorations in Primary Molars.

IF 2.5 3区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of Adhesive Dentistry Pub Date : 2023-04-25 DOI:10.3290/j.jad.b4051483

Maria Hofmann, Stefanie Amend, Susanne Lücker, Roland Frankenberger, Bernd Wöstmann, Norbert Krämer

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引用次数: 0

Abstract

Purpose: The aim of this in-vitro study was to evaluate the marginal integrity and wear of eight bulk-fill materials in comparison to a compomer in Class-II cavities in primary molars after thermomechanical loading (TML).

Materials and methods: Prepared Class-II cavities in 72 extracted primary molars were filled with eight bulk-fill materials. A compomer served as the control group. After water storage (incubator, 28 days, 37°C), samples were subjected to TML (2500 thermal cycles 5°C/55°C; 100,000 load cycles, 50 N, 1.67 Hz). Before and after TML, replicas were made which were used for both SEM analysis of marginal integrity and 3-D wear analysis. Statistical analysis was performed using Kruskal-Wallis and Wilcoxon tests (p < 0.05).

Results: A significant reduction in perfect margins was observed for all groups, while marginal gap formation increased (Wilcoxon test, p < 0.02) for all groups but the compomer. Significant interindividual differences were observed between the tested materials regarding marginal integrity (Kruskal-Wallis test, p < 0.05). Wear analysis revealed no significant differences between groups (Kruskal-Wallis test, p > 0.05).

Conclusion: Some of the bulk-fill materials investigated here achieved better results than the compomer and should be further evaluated clinically.

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小磨牙二类修复体的边缘质量和散装填充材料的磨损。

目的：这项体外研究的目的是评估八种膨体填充材料与一种复合材料在热机械加载（TML）后在初级磨牙II类洞中的边缘完整性和磨损情况：在 72 颗拔出的初级磨牙的二类龋洞中使用八种填充材料进行填充。一种复合材料作为对照组。水储存（培养箱，28 天，37°C）后，对样品进行 TML（2500 次热循环，5°C/55°C；100,000 次加载循环，50 N，1.67 Hz）。在 TML 之前和之后，都制作了复制品，用于 SEM 边缘完整性分析和三维磨损分析。使用 Kruskal-Wallis 和 Wilcoxon 检验进行统计分析（P < 0.05）：结果：所有组别的完美边缘都明显减少，而边缘间隙的形成则有所增加（Wilcoxon 检验，p < 0.02）。在边缘完整性方面，受试材料之间存在显著的个体差异（Kruskal-Wallis 检验，p < 0.05）。磨损分析表明各组间无明显差异（Kruskal-Wallis 检验，p > 0.05）：结论：本文研究的一些膨体填充材料比复合材料取得了更好的效果，应进一步进行临床评估。

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

Journal of Adhesive Dentistry 医学-牙科与口腔外科

CiteScore

5.20

自引率

6.10%

发文量

审稿时长

6-12 weeks

期刊介绍： New materials and applications for adhesion are profoundly changing the way dentistry is delivered. Bonding techniques, which have long been restricted to the tooth hard tissues, enamel, and dentin, have obvious applications in operative and preventive dentistry, as well as in esthetic and pediatric dentistry, prosthodontics, and orthodontics. The current development of adhesive techniques for soft tissues and slow-releasing agents will expand applications to include periodontics and oral surgery. Scientifically sound, peer-reviewed articles explore the latest innovations in these emerging fields.