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首页> 外文期刊>Dental Materials Journal >Bonding state of metal-free CAD/CAM onlay restoration after cyclic loading with and without immediate dentin sealing
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Bonding state of metal-free CAD/CAM onlay restoration after cyclic loading with and without immediate dentin sealing

机译：无牙本质封闭的循环载荷后无金属CAD / CAM镶嵌修复体的粘结状态

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摘要

To examine the bonding state of metal-free CAD/CAM onlay restorations made from two popular resin composite blocks and a typical glass-ceramic block after cyclic loading, with and without immediate dentin sealing (IDS). Standardized mesial-distal-occlusalbuccal (MODB) cavities in 24 extracted human molars were prepared. The intra-cavity dentin surfaces of half of the cavities were immediately sealed with all-in-one adhesive and flowable composite, while those of the other half were not. All cavities were scanned, from which CAD/CAM onlays were fabricated from three types of block and cemented with an adhesive resin cement system. The restored specimens were subjected to cyclic loading and the intra-cavity microtensile bond strength was measured. IDS improves not only the internal bond strength, but also the bond reliability of metal-free CAD/CAM onlay restorations. The resin composite block seems to be more effective than a typical glass-ceramic block for achieving both high bond strength and excellent bond reliability.
机译：在循环加载后，在有或没有即时牙本质密封（IDS）的情况下，检查由两种流行的树脂复合材料块和典型的玻璃-陶瓷块制成的无金属CAD / CAM覆盖修复体的结合状态。制备了24个提取的人类臼齿中的标准化的远中颌颊颊（MODB）空腔。立即用多合一粘合剂和可流动的复合材料密封一半空腔的空腔内牙本质表面，而另一半则没有。扫描了所有型腔，用三种类型的砖块制造了CAD / CAM覆盖物，并用粘合树脂胶结剂系统进行了胶结。使恢复的样品经受循环载荷，并测量腔内微拉伸结合强度。 IDS不仅提高了内部粘结强度，而且还提高了无金属CAD / CAM覆盖修复体的粘结可靠性。树脂复合块似乎比典型的玻璃-陶瓷块更有效地实现高粘结强度和出色的粘结可靠性。

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