Introduction: We assessed the effect of different available denture cleansers on the roughness and hardness of polyetherketoneketone, thermoinjection-molded polyamide, and polymethylmethacrylate. Materials and Methods: A total of 150 disc-shaped specimens were fabricated (10 mm × 2 mm) from these three denture base resins, and divided into five subgroups (n = 10) according to immersion procedures. One of these groups subjected to distilled water served as control, whereas other groups were subjected to daily cleansing with four denture cleansers (Corega, Protefix, Curaprox, and Perlodent) for 8 h a day for 140 days. The surface roughness and hardness values of specimens were recorded by measuring twice at baseline, and again after application of chemical solutions. Topography alterations after treatments were assessed with scanning electron microscopy. The data were subjected to statistical analysis and comparison among groups was done using Kruskal Wallis and Wilcoxon Signed Ranks tests. P-value <0.05 was considered significant. Results: The surface roughness of polyetherketoneketone, polymethylmethacrylate, and polyamide dentures was increased significantly by chemical solutions of denture cleansers. While the hardness value of polyetherketoneketone was not affected significantly after immersion in denture cleansers, those of polymethylmethacrylate and polyamide decreased significantly. Compared with Curaprox, the effervescent tablets significantly altered the surface hardness and roughness of polyamide. Conclusion: Denture cleansers can considerably alter the surface roughness and hardness of denture base resins and should be used carefully depending on the material.

中文翻译：

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清洁剂对义齿基托树脂结构特性的影响

简介：我们评估了不同可用的义齿清洁剂对聚醚酮酮、热注塑成型聚酰胺和聚甲基丙烯酸甲酯的粗糙度和硬度的影响。材料和方法：用这三种义齿基托树脂制作了总共 150 个圆盘形标本（10 mm × 2 mm），并根据浸渍程序分为五个亚组（n = 10）。其中一组使用蒸馏水作为对照，而其他组则使用四种假牙清洁剂（Corega、Protefix、Curaprox 和 Perlodent）每天清洗 8 公顷，持续 140 天。样品的表面粗糙度和硬度值通过在基线测量两次，并在施加化学溶液后再次测量来记录。用扫描电子显微镜评估治疗后的形貌改变。对数据进行统计分析，并使用 Kruskal Wallis 和 Wilcoxon Signed Ranks 检验进行组间比较。P值<0.05被认为是显着的。结果：假牙清洁剂的化学溶液显着增加了聚醚酮酮、聚甲基丙烯酸甲酯和聚酰胺假牙的表面粗糙度。虽然聚醚酮酮的硬度值在义齿清洁剂中浸泡后没有显着影响，但聚甲基丙烯酸甲酯和聚酰胺的硬度值显着下降。与 Curaprox 相比，泡腾片显着改变了聚酰胺的表面硬度和粗糙度。结论：