Comparative study of wear properties of CAD/CAM PEEK materials, resin ceramics and dental enamel under simulated chewing conditions

IF 3.3 2区医学 Q2 ENGINEERING, BIOMEDICAL

Journal of the Mechanical Behavior of Biomedical Materials Pub Date : 2025-04-17 DOI:10.1016/j.jmbbm.2025.107012

Kangjie Li , Meng Meng , Chenghua Li , Yuchen Liu , Hengyan Liu , Shizhu Bai , Sheng Zhong , Meng Li , Li Chen , Min Tian , Lina Niu , Ming Fang

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引用次数: 0

Abstract

Objectives

To compare the impact-sliding wear properties of CAD/CAM polyetheretherketone (PEEK) materials and resin ceramics with dental enamel, and to investigate the corresponding wear mechanisms.

Methods

Six CAD/CAM polymer materials were assessed in comparison with human tooth enamel. Hardness, modulus and roughness values of each group were measured, prior to wear testing in a chewing simulator (ball-on-disc design, 49 N). Wear depth, volume loss and wear rate were analysed using a nanoindentation tester and an optical profiler. Wear scars were further examined by backscattered electron scanning electron microscopy to identify the tribo-mechanisms.

Results

No significant difference in wear rate was found among BioHPP®, BioPEAK® (two filler-containing PEEK compounds) and natural enamel, during chewing simulation. After 500,000 cycles, the former two materials exhibited lower wear depth and volume loss of material and the steatite antagonists, as well as smaller wear scars, than pure PEEK Shushijie™, resin ceramics Vita ENAMIC® and Lava™ Ultimate, despite lower baseline hardness and elastic modulus than enamel. Of all the groups, BioHPP®, a ceramic-filled PEEK compound, exhibited the greatest wear resistance and the least abrasiveness to the antagonist, comparable to enamel. PEEK materials can absorb the impact stress and undergo plastic deformation, which is different from the impact-sliding wear mechanisms of resin ceramics.

Conclusions

With increasing wear cycles, PEEK compounds with high filler densities showed more favourable wear properties, comparable to enamel; and formed a compacted wear debris layer, exhibiting self-lubrication, despite of three-body wear.

Clinical significance

Within the limitations of our results, PEEK compounds are particularly suitable for pathological wear conditions in posterior regions.

Abstract Image

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模拟咀嚼条件下CAD/CAM PEEK材料、树脂陶瓷和牙釉质磨损性能的比较研究

目的比较CAD/CAM聚醚醚酮（PEEK）材料与树脂陶瓷对牙釉质的冲击滑动磨损性能，并探讨其磨损机理。方法将6种CAD/CAM高分子材料与人牙釉质进行比较。在咀嚼模拟器（球盘设计，49 N）中进行磨损测试之前，测量各组的硬度、模量和粗糙度值。使用纳米压痕测试仪和光学轮廓仪分析磨损深度、体积损失和磨损率。通过背散射电子扫描电镜进一步观察磨损痕，以确定摩擦机理。结果在模拟咀嚼过程中，BioHPP®、BioPEAK®（两种含填料PEEK化合物）和天然牙釉质的磨损率无显著差异。经过50万次循环后，与纯PEEK Shushijie™，树脂陶瓷Vita ENAMIC®和Lava™Ultimate相比，前两种材料表现出更低的磨损深度和材料体积损失，以及更小的磨损疤痕，尽管基线硬度和弹性模量低于搪瓷。在所有基团中，BioHPP®，一种陶瓷填充的PEEK化合物，对拮抗剂表现出最大的耐磨性和最小的磨蚀性，与搪瓷相当。PEEK材料可以吸收冲击应力并发生塑性变形，这与树脂陶瓷的冲击滑动磨损机制不同。结论随着磨损次数的增加，填料密度高的PEEK具有与牙釉质相当的良好磨损性能；形成致密的磨屑层，尽管存在三体磨损，但仍表现出自润滑特性。在我们的研究结果的限制下，PEEK化合物特别适合于后区域的病理性磨损情况。

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 the Mechanical Behavior of Biomedical Materials 工程技术-材料科学：生物材料

CiteScore

7.20

自引率

7.70%

发文量

505

审稿时长

46 days

期刊介绍： The Journal of the Mechanical Behavior of Biomedical Materials is concerned with the mechanical deformation, damage and failure under applied forces, of biological material (at the tissue, cellular and molecular levels) and of biomaterials, i.e. those materials which are designed to mimic or replace biological materials. The primary focus of the journal is the synthesis of materials science, biology, and medical and dental science. Reports of fundamental scientific investigations are welcome, as are articles concerned with the practical application of materials in medical devices. Both experimental and theoretical work is of interest; theoretical papers will normally include comparison of predictions with experimental data, though we recognize that this may not always be appropriate. The journal also publishes technical notes concerned with emerging experimental or theoretical techniques, letters to the editor and, by invitation, review articles and papers describing existing techniques for the benefit of an interdisciplinary readership.