Vasiliu Roxana Diana, Matichescu Anamaria, Porojan Sorin Daniel, Uţu Diana, Porojan Liliana
Department of Dental Prostheses Technology, Center for Advanced Technologies in Dental Prosthodontics, Faculty of Dental Medicine, "Victor Babeş" University of Medicine and Pharmacy, Timişoara, Romania.
Department of Preventive, Community Dentistry and Oral Health, Center for Advanced Technologies in Dental Prosthodontics, Faculty of Dental Medicine, "Victor Babeş" University of Medicine and Pharmacy, Timişoara, Romania.
Med Pharm Rep. 2025 Jul;98(3):387-391. doi: 10.15386/mpr-2849. Epub 2025 Jul 30.
This study evaluates and compares three types of thermoplastic resins used for flexible, removable partial dentures, focusing on their microhardness and surface roughness.
Thirty samples with a thickness of 2 mm were obtained from thermoplastic resins and were tested after 24 hours of immersion in distilled water. The samples were obtained from injected resin cartridges of three thermoplastic resins with different degrees of flexibility. Two-way ANOVA and Tukey tests were performed to compare the samples. A Pearson correlation was calculated between the two parameters, surface roughness and Vickers microhardness.
After statistical analysis, significant differences were found between the two resins' surface roughness. Regarding Vickers microhardness, one of the resins with the lowest flexibility range exhibited higher microhardness values.
Surface roughness values for the three resins were below 0.2 microns. Microhardness test revealed significant differences between Flaxiacryl and Flexifast samples (p<.05).
本研究评估并比较了用于制作可摘局部义齿的三种热塑性树脂，重点关注它们的显微硬度和表面粗糙度。
从热塑性树脂中获取30个厚度为2毫米的样本，并在蒸馏水中浸泡24小时后进行测试。样本取自三种不同柔韧性的热塑性树脂的注射树脂筒。采用双向方差分析和Tukey检验对样本进行比较。计算了表面粗糙度和维氏显微硬度这两个参数之间的Pearson相关性。
经过统计分析，发现两种树脂的表面粗糙度存在显著差异。关于维氏显微硬度，柔韧性范围最低的树脂之一表现出较高的显微硬度值。
三种树脂的表面粗糙度值均低于0.2微米。显微硬度测试显示Flaxiacryl和Flexifast样本之间存在显著差异（p<0.05）。
