在骨架上安装机械固位装置对种植体支撑的氧化锆冠抗折性的影响。

IF 1.9 4区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

Dental materials journal Pub Date : 2024-04-05 DOI:10.4012/dmj.2023-188

Tatsuro Kobayashi, Junichi Honda, Kei Kubochi, Taro Iwasaki, Yusuke Watanabe, Futoshi Komine

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引用次数: 0

摘要

这项研究调查了种植体支持的氧化锆冠（IZC）的断裂负荷，在这种冠中，间接复合树脂或长石瓷被层叠在带有机械固位装置的氧化锆框架上。对三种不同的氧化锆框架进行了评估：在釉质和不透明瓷材料上安装机械固位装置（分别为 GL 组和 OP 组），以及不安装机械固位装置（ND 组）。牙架使用长石瓷（FP贴面）和间接复合树脂（IC贴面）进行分层。对试样的断裂负荷进行了测量。在 FP 贴面中，GL 组的断裂载荷最高。在 IC 贴面中，GL 组和 OP 组的断裂载荷明显高于 ND 组。在粘贴瓷层的机械固定装置之前涂抹釉料，可以增强 IZC 的抗断裂性。在 GL 组和 OP 组中，机械固位装置能有效地使氧化锆框架和 IC 贴面之间产生机械联锁。

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Influence of attaching mechanical retentive devices onto frameworks on fracture resistance of implant-supported zirconia crowns.

This study investigated the fracture load of implant-supported zirconia crowns (IZCs), in which indirect composite resin or feldspathic porcelain was layered onto zirconia frameworks with mechanical retentive devices. Three different zirconia frameworks were assessed: attaching mechanical retentive devices on glaze and opaque porcelain materials (GL and OP groups, respectively), and no attaching mechanical retentive devices (ND group). The frameworks were layered using feldspathic porcelain (FP veneer) and indirect composite resin (IC veneer). Fracture load of the specimens was measured. In FP veneer, the GL group recorded the highest fracture load. In the IC veneer, the GL and OP groups had significantly higher fracture load than the ND group. The fracture resistance of IZCs can be enhanced by applying glaze material before attaching mechanical retentive devices for porcelain layering. The mechanical retentive devices effectively yielded mechanical interlocking between the zirconia frameworks and the IC veneer in GL and OP groups.

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来源期刊

Dental materials journal 医学-材料科学：生物材料

CiteScore

4.60

自引率

4.00%

发文量

102

审稿时长

3 months

期刊介绍： Dental Materials Journal is a peer review journal published by the Japanese Society for Dental Materials and Devises aiming to introduce the progress of the basic and applied sciences in dental materials and biomaterials. The dental materials-related clinical science and instrumental technologies are also within the scope of this journal. The materials dealt include synthetic polymers, ceramics, metals and tissue-derived biomaterials. Forefront dental materials and biomaterials used in developing filed, such as tissue engineering, bioengineering and artificial intelligence, are positively considered for the review as well. Recent acceptance rate of the submitted manuscript in the journal is around 30%.