In-vitro study of the wear behavior of telescopic crowns made of CoCr, zirconia or PEEK

IF 4.2 3区医学 Q2 ENGINEERING, BIOMEDICAL

Journal of Materials Science: Materials in Medicine Pub Date : 2025-05-14 DOI:10.1007/s10856-025-06891-6

PC. Pott, N. v. Maltzahn, C. Brachmann, M. Stiesch, P. Kohorst

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引用次数: 0

Abstract

Purpose: Double-crown-retained dentures (DCRD) are an established treatment in dentistry. In some cases, the retention between primary crown (PC) and secondary crown (SC) loosens due to wear during daily handling of the denture. The aim of the present study was to examine modern materials for PCs and SCs with regard to their wear behavior. Materials and Methods: Cyclic pull-off tests were conducted on each 40 specimens in five test groups. PCs made of CoCr, PEEK and ZrO₂ were cemented onto a prepared resin tooth. SCs were made of the same materials and combined to the following PC-SC combinations: CoCr-CoCr, CoCr-PEEK, PEEK-PEEK, ZrO₂-PEEK, ZrO₂-ZrO₂. The wear areas on the contact surfaces between the PCs and the SCs were examined on SEM images. Results: Wear marks in form of scratches, chipping, ductile deformation or combinations of these forms were observed on the PCs and SCs in the various material combinations. The greatest wear on PCs was observed in the PEEK-PEEK group, while the greatest wear on SCs was observed in the ZrO₂-ZrO₂ group. The least wear was observed on SCs made of PEEK in combination with PCs made of ZrO₂. Conclusion: When using modern materials for DCRDs, the combination of different materials for PCs and SCs must be taken into account. The data found in this study show that only minor wear occurs at SCs made of PEEK, especially in combination with PCs made of ZrO₂. Therefore, this combination seems particularly suitable for increasing the longevity of DCRDs.

Graphical Abstract

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CoCr、氧化锆和PEEK伸缩冠磨损性能的体外研究

目的：双冠固位义齿（DCRD）是一种成熟的牙科治疗方法。在某些情况下，由于日常使用义齿时的磨损，初级冠（PC）和次级冠（SC）之间的固位松动。本研究的目的是检查pc和sc的现代材料的磨损行为。材料与方法：分5组，每组40个试件进行循环拉脱试验。将CoCr， PEEK和ZrO2制成的pc粘合在制备的树脂牙上。sc由相同的材料制成，并组合成以下PC-SC组合：CoCr-CoCr， CoCr-PEEK, PEEK-PEEK, ZrO2-PEEK, ZrO2-ZrO2。在扫描电镜图像上检查了pc和sc之间接触表面的磨损区域。结果：在不同材料组合的pc和sc上观察到划痕、碎裂、韧性变形或这些形式的组合形式的磨损痕迹。PEEK-PEEK组对pc磨损最大，ZrO2-ZrO2组对SCs磨损最大。PEEK复合材料的sc与ZrO2复合材料的pc磨损最小。结论：采用现代材料制作dcrd时，必须考虑到pc和SCs不同材料的组合。本研究发现的数据表明，PEEK制成的sc只发生轻微磨损，特别是与ZrO2制成的pc结合使用时。因此，这种组合似乎特别适合于延长dcrd的寿命。图形抽象

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来源期刊

Journal of Materials Science: Materials in Medicine 工程技术-材料科学：生物材料

CiteScore

8.00

自引率

0.00%

发文量

审稿时长

3.5 months

期刊介绍： The Journal of Materials Science: Materials in Medicine publishes refereed papers providing significant progress in the application of biomaterials and tissue engineering constructs as medical or dental implants, prostheses and devices. Coverage spans a wide range of topics from basic science to clinical applications, around the theme of materials in medicine and dentistry. The central element is the development of synthetic and natural materials used in orthopaedic, maxillofacial, cardiovascular, neurological, ophthalmic and dental applications. Special biomedical topics include biomaterial synthesis and characterisation, biocompatibility studies, nanomedicine, tissue engineering constructs and cell substrates, regenerative medicine, computer modelling and other advanced experimental methodologies.