Influence of Aging and Surface Treatment on the Composite Bond Strength to Translucent 3Y-TZP Zirconia.

IF 2.5 3区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE Journal of Adhesive Dentistry Pub Date : 2022-10-18 DOI:10.3290/j.jad.b3500591

Nawal M Moqbel, Majed Al-Akhali, Sebastian Wille, Matthias Kern

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Abstract

Purpose: The purpose of this study was to assess the effect of aging and alumina-particle air abrasion at different pressures on the bond strength of two luting composites to a translucent 3Y-TZP zirconia.

Materials and methods: Half of the 192 disk-shaped zirconia specimens were aged in an autoclave (group A) for 20 h (134°C, 2 bar), and the other half was not aged (group N). For each group, a different surface treatment was applied: as-sintered (group SIN), alumina-particle air abrasion either at 1 bar (group 1B) or at 2.5 bar (group 2.5B). Disks were bonded to Plexiglas tubes filled with composite resin using a phosphate monomer-based luting composite (group SA) or with a separate phosphate monomer containing primer before using a phosphate-monomer-free luting composite (group V5). All specimens were subjected to tensile bond strength testing (TBS) before and after thermocycling.

Results: There were no statistically significant differences caused by autoclave aging for the test groups before thermocycling, except for the A-SIN-SA group, where the TBS decreased significantly. The variation of the aluminaparticle air abrasion pressure showed no statistically significant effect, except in the N-1B-V5 group, where TBS was significantly lower than N-2.5B-V5. After thermocycling, the TBS of most groups decreased significantly. Specimens of the primer group, which were abraded at 1 bar, showed a significant decrease in TBS in comparison with alumina-particle air abrasion at 2.5 bar.

Conclusion: Twenty hours of autoclave aging had almost no influence on the bond strength of the test groups. For the primer/resin bonding system, higher pressure during alumina-particle air abrasion might help obtain a higher and more durable bond strength to zirconia.

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老化和表面处理对半透明 3Y-TZP 氧化锆复合粘接强度的影响

目的：本研究的目的是评估不同压力下的老化和氧化铝颗粒空气磨蚀对两种搪瓷复合材料与半透明 3Y-TZP 氧化锆的粘接强度的影响。材料和方法：192 个圆盘状氧化锆试样的一半在高压釜中（A 组）老化 20 小时（134°C，2 巴），另一半未老化（N 组）。每组都采用了不同的表面处理方法：烧结（SIN 组）、氧化铝颗粒在 1 巴（1B 组）或 2.5 巴（2.5B 组）条件下进行气磨。使用基于磷酸盐单体的复合树脂衬垫（SA 组）或在使用不含磷酸盐单体的复合树脂衬垫（V5 组）之前使用单独的含磷酸盐单体的底漆将牙盘粘结到填充有复合树脂的有机玻璃管上。所有试样在热循环前后都进行了拉伸粘接强度测试（TBS）：除 A-SIN-SA 组的 TBS 显著下降外，其他各组在热循环前的高压灭菌老化在统计学上没有明显差异。除 N-1B-V5 组的 TBS 明显低于 N-2.5B-V5 组外，铝颗粒空气磨擦压力的变化在统计学上没有明显影响。热循环后，大多数组的 TBS 都明显下降。在 1 巴压力下磨损的底漆组试样与在 2.5 巴压力下的氧化铝颗粒空气磨损试样相比，TBS 明显降低：结论：20 小时的高压釜老化对测试组的粘接强度几乎没有影响。对于底漆/树脂粘接系统，在氧化铝-微粒气磨过程中施加更高的压力可能有助于获得更高和更持久的氧化锆粘接强度。

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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.