Preheated Composite as an Alternative for Bonding Feldspathic and Hybrid Ceramics: A Microshear Bond Strength Study.

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

Journal of Adhesive Dentistry Pub Date : 2023-08-08 DOI:10.3290/j.jad.b4279775

Manassés Tercio Vieira Grangeiro, Camila da Silva Rodrigues, Natalia Rivoli Rossi, Karina Barbosa Souza, Renata Marques de Melo, Marco Antonio Bottino

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引用次数: 0

Abstract

Purpose: To evaluate the bond strength between alternative or conventional luting agents and indirect restorative materials.

Materials and methods: Blocks of a polymer-infiltrated ceramic network (PICN, Vita Enamic) and a feldspathic ceramic (FEL, Vita Mark II) were sliced and divided according to the luting agent: resin cement (PICN-RC, FEL-RC), flowable composite (PICN-FC, FEL-FC), or preheated composite (PICN-PH, FEL-PH). The ceramic surfaces were polished, etched with 5% hydrofluoric acid for 60 s, and then a silane layer was applied. Cylinders of the luting agents were built up on the ceramic surfaces. In half the samples, the microshear bond strength (µSBS) was tested after 24 h (baseline). The other half was tested after 5000 thermocycles (5°C-55°C) (aging). The failure modes were determined using a stereomicroscope, and the ceramic surfaces were analyzed using a scanning electron microscope. Data were statistically analyzed with two-way ANOVA.

Results: Thermocycling reduced the bond strength values of all experimental groups. Regarding FEL, the preheated composite obtained the highest results. Resin cement showed results similar to the flowable composite at baseline and after aging. The highest results of PICN were obtained from the preheated composite followed by resin cement and flowable composite. Significant differences among the three luting agents were observed before and after aging. The most frequent failures among the experimental groups were adhesive and cohesive in the ceramic.

Conclusion: Bond strength results indicate that the preheated composite can be an alternative for adhesive cementation when applied on the tested feldspathic ceramic or PICN.

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预热复合材料作为粘结长石陶瓷和混合陶瓷的替代方法：微剪切粘接强度研究。

目的：评估替代或传统粘接剂与间接修复材料之间的粘接强度：将聚合物浸润陶瓷网络（PICN，Vita Enamic）和长石陶瓷（FEL，Vita Mark II）的块体切片，并根据粘结剂的不同进行划分：树脂水泥（PICN-RC，FEL-RC）、可流动复合材料（PICN-FC，FEL-FC）或预热复合材料（PICN-PH，FEL-PH）。陶瓷表面抛光后，用 5%氢氟酸腐蚀 60 秒，然后涂上硅烷层。然后在陶瓷表面堆积胶合剂圆柱体。一半的样品在 24 小时后测试微剪切粘接强度 (µSBS)（基线）。另一半样品在经过 5000 次热循环（5°C-55°C）（老化）后进行测试。使用体视显微镜确定失效模式，并使用扫描电子显微镜分析陶瓷表面。数据采用双向方差分析进行统计分析：结果：热循环降低了所有实验组的粘接强度值。关于 FEL，预热复合材料的结果最高。树脂水泥在基线和老化后的结果与可流动复合材料相似。预热复合材料的 PICN 结果最高，其次是树脂水泥和可流动复合材料。在老化前和老化后，三种胶合剂之间存在显著差异。实验组中最常见的故障是陶瓷的粘结和内聚：粘结强度结果表明，在测试的长石陶瓷或 PICN 上使用预热复合材料可以替代粘结剂。

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.