Impact of restorative material on fracture behaviors of class II restoration in endodontically treated deciduous molars.

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-09-28 Epub Date: 2024-08-28 DOI:10.4012/dmj.2024-067

Kanae Wada, Junichiro Wada, Mine Betul Uctasli, Sadullah Uctasli, Yasemin Yavuz, Tsutomu Iwamoto, Pekka K Vallittu, Sufyan Garoushi, Lippo Lassila

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Abstract

The purpose of this study was to investigate the fracture behavior of endodontically treated (ET) deciduous molar when directly restored with different restorative materials in Class II (MO) cavities in comparison with permanent teeth. MO cavities were prepared with 2.4-2.5 mm and 1.9-2.0 mm in buccolingual width, and mesiodistal width of each cavity walls, respectively, followed by direct restoration with different materials: resin-modified glass ionomer cement (RMGIC), composite resin (CR), and composite resin containing 25% short glass-fiber (SFRC). All specimens were subjected to mechanical loading tests at a speed of 1 mm/min and evaluated fracture resistance and fracture modes. A one-way ANOVA followed by a Tukey multiple comparisons analysis was used. Deciduous-SFRC (3,310.5±396.2 N) were significantly higher fracture resistance than permanent-RMGIC (1,633.8±346.8 N) (p<0.001), and permanent-CR (1,400.0±381.3 N) (p<0.001). For the direct restoration of MO cavity after endodontic treatment, SFRC demonstrated its promising performance in load-bearing capacity and failure mode, especially in ET deciduous molars.

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修复材料对经牙髓治疗的脱落磨牙 II 类修复体断裂行为的影响。

本研究的目的是调查经根管治疗（ET）的乳磨牙在二类（MO）龋洞中使用不同修复材料直接修复时与恒牙相比的折断行为。MO龋洞的颊舌侧宽度和牙周侧宽度分别为2.4-2.5毫米和1.9-2.0毫米，然后用不同的材料直接修复：树脂改性玻璃离子水泥（RMGIC）、复合树脂（CR）和含25%短玻璃纤维的复合树脂（SFRC）。所有试样都以 1 毫米/分钟的速度进行了机械加载试验，并评估了抗断裂性和断裂模式。采用单因素方差分析和 Tukey 多重比较分析。落叶-SFRC（3,310.5±396.2 N）的抗断裂强度明显高于永久-RMGIC（1,633.8±346.8 N）（p

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.